CN110529122B - Jacking and translation station-passing construction method and jacking and descending device for shield machine - Google Patents

Jacking and translation station-passing construction method and jacking and descending device for shield machine Download PDF

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Publication number
CN110529122B
CN110529122B CN201910614427.3A CN201910614427A CN110529122B CN 110529122 B CN110529122 B CN 110529122B CN 201910614427 A CN201910614427 A CN 201910614427A CN 110529122 B CN110529122 B CN 110529122B
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China
Prior art keywords
jacking
shield
machine
station
shield machine
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CN110529122A (en
Inventor
杨壮志
熊阳阳
张�杰
姜群会
王玉卿
孙庆田
魏小松
胡爽子
王坤
熊朝东
古宗华
***
谢重化
李龙坤
吴乐斌
谭宏华
王�华
吴志峰
彭德伟
姚先力
张政
孙明磊
杨育辉
王林
闫浩亮
陈钱
邹宁
吴迪
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China Railway Tunnel Group Co Ltd CRTG
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China Railway Tunnel Group Co Ltd CRTG
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Priority to CN201910614427.3A priority Critical patent/CN110529122B/en
Publication of CN110529122A publication Critical patent/CN110529122A/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0621—Shield advancing devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention discloses a shield tunneling machine jacking and translation station-crossing construction method, which comprises the following steps: s1, construction preparation; s2, mounting a base and a jacking plate; s3, installing a stepping shoe supporting system; s4, filling a backing plate between the stepping shoe supporting system and the cylinder barrel, and clamping the part of the piston rod extending out of the bottom of the jacking cylinder by a U-shaped opening of the backing plate; s5, single-step jacking: controlling all the jacking oil cylinders to synchronously jack so as to enable the main machine of the shield tunneling machine to rise to a first receiving preset height, and then continuously filling a base plate between the bottom of the cylinder barrel and the top of the stepping shoe supporting system; s6, repeating the step S5 at least until the shield machine host is lifted to a preset receiving height; s7, pushing to pass through the station; and S8, when the host machine of the shield machine reaches the starting shield well, reversely operating to enable the host machine of the shield machine to descend to the starting preset height according to the jacking step. According to the shield machine jacking and translation station-crossing construction method, the safety of the shield machine host machine in the jacking process can be effectively ensured.

Description

Jacking and translation station-passing construction method and jacking and descending device for shield machine
Technical Field
The invention relates to the technical field of shield construction, in particular to a shield machine jacking and translation station-crossing construction method and a jacking and descending device.
Background
The shield machine is a large-scale automatic and mechanical device for tunnel construction, and has the characteristics of complex system, large volume, heavy structure and the like. In the aspect of municipal subway tunnels, the diameter of the shield tunneling machine is at least more than 6 meters, and the weight of the shield tunneling machine is more than 300 tons, so that the shield tunneling machine is long in time consumption and high in cost.
In the related technology, when the construction of a 'station-first and tunnel-second method' is adopted, a shield machine needs to pass through a station, most of the existing schemes select to push the station in an overall mode without disassembling the machine so as to reduce the secondary assembly cost and the construction period, however, the method has certain requirements on the station structure, is suitable for the conditions that the structure is relatively simple and the elevation of a bottom plate is relatively uniform and suitable, and is not suitable for the conditions that the station structure is complex and the bottom plate has large height difference.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a shield machine jacking and translation station-passing construction method, which effectively ensures the safety of a shield machine host in the jacking process.
The invention also aims to provide a shield machine jacking and descending device for implementing the shield machine jacking and translation station-passing construction method.
According to the embodiment of the first aspect of the invention, the shield tunneling machine jacking and translation station-crossing construction method comprises the following steps:
s1, construction preparation: customizing a pump station according to the size of a shield machine host machine and the height difference between a receiving bottom plate of a station shield well and an originating bottom plate of the station shield well, and manufacturing a base, a jacking plate, a stepping shoe supporting system and a station passing track;
s2, mounting the base and the jacking plate: fixing a plurality of bases on a station shield well receiving bottom plate in pairs; fixedly connecting a plurality of jacking plates to the lower part of the outer surface of the shield machine host, wherein the bottom of each jacking plate is connected with a jacking oil cylinder, the jacking oil cylinders vertically correspond to the corresponding bases, and each jacking oil cylinder comprises a cylinder barrel and a piston rod which is arranged in the cylinder barrel and can extend downwards relative to the cylinder barrel;
s3, installation of the stepping shoe supporting system: each base is connected with a stepping shoe supporting system, and the stepping shoe supporting systems are located between the bases and the corresponding jacking oil cylinders;
s4, adjusting the bottom of the piston rod of each jacking oil cylinder to be tightly attached to the top of the stepping shoe supporting system; a base plate is filled between the stepping shoe supporting system and the cylinder barrel, and a U-shaped opening of the base plate clamps the part of the piston rod extending out of the bottom of the jacking cylinder;
s5, single-step jacking: controlling all the jacking oil cylinders to synchronously jack so as to enable the shield machine host to rise to a first receiving preset height, and then continuously filling a base plate between the bottom of the cylinder barrel and the top of the stepping shoe supporting system;
s6, repeating at least the step S5 until the shield machine host is lifted to a receiving preset height, wherein the receiving preset height is larger than the first receiving preset height;
s7, pushing and standing: pushing the host machine of the shield machine from the receiving shield well to the originating shield well through the station-passing track;
and S8, when the host machine of the shield machine reaches the starting shield well, reversely operating to enable the host machine of the shield machine to descend to the preset starting height according to the jacking step.
According to the shield machine jacking and translation station-crossing construction method provided by the embodiment of the invention, the shield machine host is lifted by adopting a multi-step jacking mode, and the base plate is fully arranged between the bottom of the cylinder barrel and the top of the stepping shoe supporting system after single-step jacking, so that the safety of the shield machine host in the jacking process can be effectively ensured.
According to some embodiments of the invention, before step S6, the method further comprises:
s51, mounting a supporting platform system below the bottom of the main machine of the shield machine, wherein the supporting platform system is located between the paired bases in the transverse direction of the main machine of the shield machine;
s52, controlling the piston rod to retract upwards so that the main machine of the shield machine presses the supporting platform system;
s53, connecting a first step shoe supporting system to the top of the step shoe supporting system, and closely attaching the bottom of the corresponding jacking oil cylinder to the first step shoe supporting system;
the step S6 is repeated at least until the shield machine host is lifted to the receiving preset height, wherein the steps S5, S51, S52 and S53 are repeated.
According to some embodiments of the invention, the support platform system comprises a first support platform frame to a third support platform frame,
step S51 specifically includes:
s511, arranging a first supporting platform frame and a second supporting platform frame which are connected with each other along the axial direction of the main machine of the shield machine and below a tail shield of the main machine of the shield machine;
s512, translating the first supporting platform frame and the second supporting platform frame which are connected with each other to respectively correspond to a front shield and a middle shield of the host machine of the shield machine;
and S513, arranging a third supporting platform frame connected with the second supporting platform frame below the shield tail of the shield machine host.
According to some embodiments of the invention, in step S511, the first to third support platform frames each comprise:
the multi-layer supporting platform layer is sequentially connected along the vertical direction, each layer of supporting platform layer comprises two I-shaped parts and four connecting plates which are arranged along the axial direction of the main machine of the shield tunneling machine at intervals, the middle parts of the two I-shaped parts are connected through connecting beams, the two connecting plates are connected to the tops of the two ends of the two I-shaped parts, the other two connecting plates are connected to the bottoms of the two ends of the two I-shaped parts,
the first supporting platform frame and the second supporting platform frame are connected through a plurality of connecting rods, the connecting rods are respectively connected at two ends of the first supporting platform frame and the second supporting platform frame,
the second support platform frame and the third support platform frame are connected in the same manner as the first support platform frame and the second support platform frame.
According to some embodiments of the present invention, after the host computer of the shield machine is lifted to the predetermined receiving height, the method further includes:
and S514, mounting a connecting column on the connecting rod, wherein the height of the connecting column is the same as that of the supporting platform system.
According to some embodiments of the invention, the connecting posts are provided at 1/3-1/2 of the connecting stick.
According to some embodiments of the present invention, step S5 specifically includes:
s501, synchronously jacking all the jacking oil cylinders according to a preset speed until the shield machine host rises to the first receiving preset height;
s502, continuously filling a base plate between the bottom of the cylinder barrel and the top of the stepping shoe supporting system;
s503, repeating the steps S501 and S502 until the shield machine host ascends by a second preset receiving height, wherein the second preset receiving height is larger than the first preset receiving height and smaller than the preset receiving height;
and step S6, repeating the steps S501, S502 and S503 at least until the shield machine host is lifted to the receiving preset height.
According to some embodiments of the invention, in the step S501, the predetermined speed is v, where v satisfies: v is less than or equal to 500 mm/h.
According to some embodiments of the invention, in the step S501, the first receiving predetermined height is d1Wherein said d1Satisfies the following conditions: d is not less than 30mm1≤40mm。
According to some embodiments of the invention, in the step S502, a thickness of the pad plate is the same as the first receiving predetermined height.
According to some embodiments of the invention, in the step S503, the second receiving predetermined height is d2Wherein said d2Satisfies the following conditions: d is more than or equal to 300mm2≤400mm。
According to some embodiments of the invention, said d2Further satisfies the following conditions: d2＝350mm。
According to some embodiments of the invention, the step shoe system comprises a plurality of sections connected in series in an up-down direction, and the first step shoe system and the step shoe system have the same structure.
According to some embodiments of the invention, the support platform system is connected to the side of the station shield well receiving floor during the process of lifting the host shield machine to the receiving preset height.
In accordance with some embodiments of the present invention,
before step S3, the method further includes: s21, fixedly connecting the receiving base to the bottom of the host machine of the shield machine;
before step S7, the method further includes: and S61, cutting off the connection between the shield machine host and the receiving base.
According to some embodiments of the invention, the included angle between each jacking plate and the vertical center line of the host machine of the shield tunneling machine is α, wherein the α satisfies 30 degrees ≦ α ≦ 60 degrees.
According to some embodiments of the invention, the α further satisfies α ═ 45 °.
According to some embodiments of the invention, a side surface of the jacking plate facing the main frame of the shield machine is matched with the shape of the outer surface of the main frame of the shield machine.
According to some embodiments of the invention, before the step S5, the method further includes:
and debugging the pump station and all the jacking oil cylinders to enable all the jacking oil cylinders to work synchronously.
According to some embodiments of the invention, all of the jacking cylinders are connected in parallel with the pump station.
According to some embodiments of the invention, a plurality of the jacking oil cylinders are arranged in pairs along the axial direction of the shield machine main body, and each pair of the jacking oil cylinders comprises two jacking oil cylinders symmetrically arranged along the vertical center line of the shield machine main body.
According to some embodiments of the invention, after the pump station and all the jacking cylinders are debugged, the bottoms of all the jacking cylinders are positioned in the same horizontal plane when no pressure exists.
According to some embodiments of the invention, in step S7, a pushing jack is fixed on the main shield machine, and the pushing jack pushes a counterforce base installed on the transit rail to move the main shield machine from the receiving shield well to the originating shield well.
According to some embodiments of the invention, the rated output load of the jacking cylinder and the pump station is greater than or equal to 1.5 times of a safety factor.
According to a second aspect embodiment of the present invention, the shield machine lifting and lowering device used for implementing the shield machine lifting and translating station-crossing construction method according to the first aspect embodiment of the present invention comprises: the station shield well comprises a plurality of pairs of pedestals, a plurality of pairs of pedestals and a plurality of connecting pieces, wherein the plurality of pairs of pedestals are suitable for being arranged at intervals along the axial direction of a shield machine host, two of the pedestals in each pair are suitable for being spaced apart in the transverse direction of the shield machine host, and the plurality of pairs of pedestals are suitable for being fixedly connected to a station shield well bottom plate; the plurality of stepping shoe supporting systems are respectively connected to the tops of the plurality of bases; the plurality of jacking plates are suitable for being fixedly connected to the outer surface of the shield machine host; the jacking cylinders are respectively connected to the bottoms of the jacking plates and correspond to the stepping shoe supporting systems up and down respectively, each jacking cylinder comprises a cylinder barrel and a piston rod which is arranged in the cylinder barrel and can extend downwards relative to the cylinder barrel, and the bottom of each piston rod is suitable for stopping against the upper surface of the corresponding stepping shoe supporting system; the bottom of the cylinder barrel is filled with the stepping shoe supporting system, the stepping shoe supporting system comprises a plurality of base plates, the base plates are suitable for being filled between the bottom of the cylinder barrel and the upper surface of the stepping shoe supporting system, each base plate is provided with a U-shaped opening, and the part, extending out of the bottom of the jacking oil cylinder, of the piston rod is clamped by the base plates through the U-shaped openings.
According to some embodiments of the invention, the bottom of the main machine of the shield machine is suitable for being fixedly connected with a base, and the shield machine jacking device further comprises: and the supporting platform system is arranged between two of the bases in each pair, and the bottom of the main machine of the shield tunneling machine is suitable for being supported on the supporting platform system.
According to some embodiments of the invention, the support platform system comprises a plurality of support platform frames, the plurality of support platform frames are suitable for being spaced along the axial direction of the main machine of the shield tunneling machine, and two adjacent support platform frames are connected through a connecting rod.
According to some embodiments of the invention, each support platform frame comprises a plurality of support platform layers which are sequentially connected in the vertical direction, each support platform layer comprises two i-shaped members and four connecting plates which are arranged at intervals in the axial direction of the main machine of the shield tunneling machine, the middle parts of the two i-shaped members are connected through connecting beams, two connecting plates are connected to the tops of two ends of the two i-shaped members, and the other two connecting plates are connected to the bottoms of two ends of the two i-shaped members.
According to some embodiments of the invention, a connecting column extending in a vertical direction is provided at the connecting rod, and the height of the connecting column is the same as the height of the support platform system.
According to some embodiments of the invention, the connecting posts are provided at 1/3-1/2 of the connecting stick.
According to some embodiments of the invention, the included angle between each jacking plate and the vertical center line of the host machine of the shield tunneling machine is α, wherein the α satisfies 30 degrees ≦ α ≦ 60 degrees.
According to some embodiments of the invention, the α further satisfies α ═ 45 °.
According to some embodiments of the invention, a side surface of the jacking plate facing the main shield machine body is adapted to fit the shape of the outer surface of the main shield machine body.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block flow diagram of a shield tunneling machine jacking and translation station-crossing construction method according to an embodiment of the invention;
fig. 2 is a schematic diagram of a shield machine lifting and lowering device and a station according to an embodiment of the invention, wherein a shield machine host is shown;
FIG. 3 is a schematic transverse cross-sectional view of the shield machine jacking and lowering apparatus and shield machine host shown in FIG. 2;
FIG. 4 is a schematic partial longitudinal cross-sectional view of the shield machine lifting and lowering apparatus and shield machine host shown in FIG. 2;
FIG. 5 is a schematic diagram of a shield tunneling machine jacking and lowering apparatus according to an embodiment of the present invention;
FIG. 6 is an assembled schematic view of the jacking plate and jacking cylinder shown in FIG. 5;
FIG. 7 is a schematic view of a plurality of mats stacked in accordance with an embodiment of the invention;
FIG. 8 is a schematic view of a step shoe system according to an embodiment of the present invention;
FIG. 9 is a schematic view of a base according to an embodiment of the invention;
figure 10 is a schematic illustration of a support platform layer according to an embodiment of the present invention;
FIG. 11 is a schematic view of a connecting column according to an embodiment of the present invention.
Reference numerals:
100: a shield machine host;
210: receiving a shield well; 211: a station shield well receiving bottom plate;
220: starting a shield well; 221: a station shield well starting bottom plate;
230: a station-passing track;
310: a base; 311: a first plate; 312: a second plate; 313: a support plate;
320: a jacking plate; 321: a jacking oil cylinder;
330: a step shoe system; 331: a base plate; 3311: a U-shaped opening;
332: a plate body; 333: h-shaped steel; 334: reinforcing ribs;
340: a support platform system;
341: a first support platform frame; 342: a second support platform frame;
343: a third support platform frame; 344: a support platform layer;
3441: an I-shaped member; 3442: a connecting plate; 3443: a connecting beam;
345: a connecting rod; 346: connecting columns;
3461: u-shaped channel steel; 3462: an L-shaped plate; 3463: a base plate; 3464: a connecting seat;
347: connecting the end heads; 350: a base is received.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
The shield tunneling machine jacking and translation station-crossing construction method according to the embodiment of the invention is described below with reference to fig. 1-11. The construction method is suitable for the conditions that the station structure is complex, the bottom plate has large height difference, and is particularly suitable for the conditions that the jacking height is large and the construction risk is great. Specifically, for example, the construction method can perform jacking operation on the shield machine, then translate the shield machine to pass through a station, and then perform descending operation on the shield machine.
According to the shield machine jacking and translation station-crossing construction method provided by the embodiment of the invention, enough precision can be ensured during construction, and the shield body of the shield machine is prevented from laterally moving, rolling and even overturning, so that the safety in the jacking, translation and descending processes can be well ensured.
Referring to fig. 1 in combination with fig. 2 to 11, a shield tunneling machine jacking and translation station-crossing construction method according to an embodiment of the invention includes the following steps:
s1, construction preparation: customizing a pump station according to the size of the shield machine host 100, the height difference between the station shield well receiving bottom plate 211 and the station shield well starting bottom plate 221, and manufacturing a base 310, a jacking plate 320, a stepping shoe supporting system 330 and a station-crossing track 230;
s2, mounting of the base 310 and the lifting plate 320: fixing a plurality of pedestals 310 on the station shield well receiving floor 211 in pairs; fixedly connecting a plurality of lifting plates 320 to the lower part of the outer surface of the shield machine host 100, wherein the bottom of each lifting plate 320 is connected with a lifting oil cylinder 321, each lifting oil cylinder 321 corresponds to the corresponding base 310 up and down, and each lifting oil cylinder 321 comprises a cylinder barrel and a piston rod which is arranged in the cylinder barrel and can extend downwards relative to the cylinder barrel;
s3, installation of the step shoe supporting system 330: each base 310 is connected with a stepping shoe supporting system 330, and the stepping shoe supporting system 330 is positioned between the base 310 and the corresponding jacking cylinder 321;
s4, adjusting the bottom of the piston rod of each jacking oil cylinder 321 to be tightly attached to the top of the stepping shoe supporting system 330; a backing plate 331 is filled between the stepping shoe supporting system 330 and the cylinder barrel, and a U-shaped opening 3311 of the backing plate 331 clamps the part of the piston rod extending out of the bottom of the jacking cylinder 321;
s5, single-step jacking: controlling all the jacking oil cylinders 321 to synchronously jack so as to enable the shield machine main body 100 to rise to a first receiving preset height, and then continuously filling the base plate 331 between the bottom of the cylinder barrel and the top of the stepping shoe supporting system 330;
s6, repeating at least the step S5 until the shield machine host 100 is lifted to a receiving preset height, wherein the receiving preset height is larger than the first receiving preset height;
s7, pushing and standing: pushing the host shield machine 100 from the receiving shield well 210 to the originating shield well 220 through the station-passing track 230;
and S8, when the shield machine host 100 reaches the starting shield well 220, reversely operating to make the shield machine host 100 descend to the starting preset height according to the jacking step.
Step S1 is a preparation operation before actually performing the shield machine main body 100 lifting and translation station-crossing construction. The pumping station, the base 310, the jacking plate 320, the stepping shoe supporting system 330 and the station passing rail 230 need to be specifically determined according to the actual size of the main machine 100 of the field shield machine, the height difference between the receiving bottom plate 211 of the station shield well and the starting bottom plate 221 of the station shield well and other factors. Here, it should be noted that the structure, the operation principle, and the like of the pump station are well known to those skilled in the art, and are not described herein again, for example, the pump station may be a hydraulic power device that provides a certain pressure and flow for the lift cylinder 321.
In step S2, for example, with reference to fig. 2 to 5, two pedestals 310 on the same cross section of the shield machine main body 100 are a pair, and two pairs of four pedestals 310 are arranged at intervals in the axial direction of the shield machine main body 100, where two pedestals 310 in a pair are arranged at intervals left and right. Each base 310 is fixedly connected to the station shield well receiving bottom plate 211, and at this time, each base 310 is fixed with respect to the station shield well receiving bottom plate 211, for example, each base 310 may be fixedly connected to the station shield well receiving bottom plate 211 through bolts, so as to support the shield machine main body 100, the corresponding jacking cylinder 321 and the corresponding jacking plate 320. After the host machine 100 of the shield machine is jacked and translated and passes the station, the base 310 can be detached from the receiving bottom plate 211 of the shield well of the station, and the normal use of the station is not influenced.
In the example of fig. 2 to 5, a plurality of lifting plates 320 are fixedly connected to the lower portion of the shield machine main body 100 at intervals, for example, each lifting plate 320 may be welded to the shield machine main body 100 to ensure the reliability of the connection between the lifting plate 320 and the shield machine main body 100, so that the shield machine main body 100 is not prone to lateral movement, rolling or even overturning due to relative movement between the lifting plate 320 and the shield machine main body 100 in the subsequent lifting process. In the description of the present invention, "a plurality" means two or more. The jacking cylinders 321 may be removably coupled (e.g., bolted, etc.) to the corresponding jacking plates 320 to facilitate recycling of the jacking cylinders 321 and save energy. The plurality of jacking plates 320 and the plurality of jacking cylinders 321 are in up-down one-to-one correspondence with the plurality of bases 310 respectively, the number of the jacking plates 320, the number of the jacking cylinders 321 and the number of the bases 310 are the same, and the jacking plates 320, the corresponding jacking cylinders 321 and the bases 310 are sequentially arranged from top to bottom.
Four bases 310, four jacking plates 320 and four jacking cylinders 321 are shown in fig. 2-5 for illustrative purposes, but it is obvious to those skilled in the art after reading the technical solutions of the present application that the solution can be applied to other numbers of bases 310, jacking plates 320 and jacking cylinders 321, and the invention also falls into the protection scope of the present invention. The specific number of the bases 310, the jacking plates 320 and the jacking cylinders 321 can be specifically set according to the actual size, the gravity center position and the like of the shield machine host 100, so that the shield machine host 100 can be supported more stably, and the shield machine host 100 is safer in the jacking process. For example, the number of the base 310, the jacking plate 320 and the jacking cylinder 321 may be six, eight, etc.
It is understood that the mounting sequence of the base 310 and the lifting plate 320 in the step S2 can be specifically arranged according to actual situations to better meet the practical application.
In step S3, for example, as shown in fig. 2-5, the step shoe system 330 may be detachably connected to the top of the base 310 using bolts to facilitate the installation and removal between the step shoe system 330 and the base 310. The step shoe system 330 is located between the lift cylinder 321 and the base 310 in the up-down direction. For example, the bottom of each jacking cylinder 321 may rest on the upper surface of the step shoe system 330.
In step S4, the working state of each jacking cylinder 321 may be debugged by the pump station, and the telescopic state of each jacking cylinder 321 is adjusted to make the bottom of the piston rod of each jacking cylinder 321 closely fit with the top of the stepping shoe supporting system 330, so that each jacking cylinder 321 may be stably supported at the top of the corresponding stepping shoe supporting system 330, thereby ensuring the safety of the subsequent shield machine host 100 in the jacking process.
The pad 331 is filled between the stepping shoe system 330 and the cylinder barrel of the corresponding jacking cylinder 321, and specifically, referring to fig. 7, the pad 331 is clamped on the portion of the lower end of the piston rod of the jacking cylinder 321, which extends out of the bottom of the jacking cylinder 321, through the U-shaped opening 3311 thereon, and at this time, the overall thickness of the pad 331 is equal to the length of the lower end of the piston rod of the jacking cylinder 321, which extends out of the bottom of the jacking cylinder 321. Therefore, when the pump station fails, the backing plate 331 can support at any time, so that the bottom of the jacking oil cylinder 321 (for example, the bottom of the cylinder barrel) is supported on the upper surface of the backing plate 331, thereby effectively preventing the shield machine main body 100 from lateral movement, rolling and even overturning, and effectively ensuring the safety of the shield machine main body 100 in the jacking process.
In step S5, in the process of the shield machine main body 100 rising to the first predetermined receiving height, for example, the pump station can control all the jacking cylinders 321 to synchronously jack, so that the shield machine main body 100 can be effectively ensured to rise stably in the jacking process, and the phenomena of lateral movement, rolling and even overturning are not easy to occur. In the above process, the bottom surface of the piston rod is stopped against the stepping shoe supporting system 330 and does not move downward, so that the cylinder of the jacking cylinder 321 can move upward relative to the piston rod to drive the shield machine main body 100 to ascend. After the shield machine main unit 100 rises to the first receiving preset height, the distance between the bottom of the jacking cylinder 321 and the top surface of the backing plate 331 is the first receiving preset height, and at this time, the backing plate 331 is filled into the first receiving preset height, so that the bottom of the jacking cylinder 321 is supported on the top surface of the backing plate 331, and thus the safety of the shield machine main unit 100 during jacking in each step can be effectively ensured.
In step S6, the shield machine main body 100 ascends by the first predetermined receiving height each time by using a multi-step jacking method, and after jacking for many times, the shield machine main body 100 ascends by the predetermined receiving height finally. At this time, the height (i.e., the first receiving predetermined height) of the single jacking of the shield machine main unit 100 is smaller, so that the serious consequences that once the jacking cylinder 321 fails, the shield machine main unit 100 unstably overturns due to the fact that the single jacking height is too high can be prevented.
In step S7, after the shield machine main body 100 ascends to receive a predetermined height, as shown in fig. 1, the bottom of the shield machine main body 100 is approximately flush with the station passing track 230 connected between the receiving shield well 210 and the originating shield well 220, and the shield machine main body 100 can be pushed from the receiving shield well 210 where the shield machine main body 100 is located to the originating shield well 220 through the station passing track 230. The receiving shield well 210 and the originating shield well 220 are respectively located at both ends of the transit track 230.
In step S8, the shield machine host 100 performs a descending operation, in which the descending operation process of the shield machine host 100 is exactly opposite to the above-mentioned ascending operation process, so that the shield machine host 100 descends to the original predetermined height. Wherein the originating predetermined height may be equal to the receiving predetermined height. Of course, the originating predetermined height may also be different from the receiving predetermined height.
Specifically, for example, before the host computer 100 moves to the originating shield well 220, a plurality of bases 310 need to be fixed on the originating bottom plate 221 of the station shield well in pairs; a step shoe system 330 is then attached to each of the plurality of pedestals 310. When the shield machine main unit 100 moves to the initial shield well 220, the bottom of the piston rod of each jacking oil cylinder 321 is adjusted to be tightly attached to the top of the stepping shoe supporting system 330, then a base plate 331 is filled between the stepping shoe supporting system 330 and the cylinder barrel, and the part of the piston rod extending out of the bottom of the jacking oil cylinder 321 is clamped by the U-shaped opening 3311 of the base plate 331. Then, a part of the pads 331 are removed, and all the jacking cylinders 321 are controlled by the pump station to synchronously descend so as to enable the shield machine main unit 100 to descend by a first predetermined starting height, which is smaller than the predetermined starting height, and the first predetermined starting height is equal to the thickness of the removed part of the pads 331, so that the bottoms of all the jacking cylinders 321 can be supported on the upper surface of the uppermost pad 331. And repeating the steps of taking out the base plate 331 and controlling all the jacking oil cylinders 321 to synchronously descend until the shield machine host 100 descends to the original preset height.
According to the shield machine jacking and translation station-crossing construction method provided by the embodiment of the invention, the shield machine main machine 100 is lifted in a multi-step jacking mode, and the base plate 331 is filled between the bottom of the cylinder barrel and the top of the stepping shoe supporting system 330 after single-step jacking, so that the safety of the shield machine main machine 100 in the jacking process can be effectively ensured.
According to some embodiments of the present invention, referring to fig. 2-5, before step S6, further comprising:
s51, mounting a supporting platform system 340 below the bottom of the shield machine host 100, wherein the supporting platform system 340 is located between the paired pedestals 310 in the transverse direction of the shield machine host 100;
s52, controlling the piston rod to retract upwards so that the main shield machine 100 is pressed on the supporting platform system 340;
s53, connecting a first step shoe supporting system to the top of the step shoe supporting system 330, and closely attaching the bottom of the corresponding jacking oil cylinder 321 to the first step shoe supporting system;
the above step S6, at least the steps S5, S51, S52 and S53 are repeated until the shield machine main body 100 is lifted to receive the predetermined height.
Therefore, by arranging the supporting platform system 340 between the paired bases 310, after the piston rods of the jacking oil cylinders 321 are controlled to retract so that the shield machine main machine 100 is pressed on the supporting platform system 340, the weight of the shield machine main machine 100 is shared by the supporting platform system 340 and all the jacking oil cylinders 321, so that the pressure of the jacking oil cylinders 321 can be relatively reduced, the working reliability of the jacking oil cylinders 321 is ensured, the safety of the shield machine main machine 100 in the jacking and descending processes can be further ensured, the number of the jacking oil cylinders 321 can be relatively reduced, and the cost can be reduced. In addition, the top of the stepping shoe supporting system 330 is connected with the first stepping shoe supporting system, and the bottom of the corresponding jacking oil cylinder 321 is tightly attached to the first stepping shoe supporting system, so that the stability of the jacking oil cylinder 321 for supporting the shield machine main unit 100 can be effectively ensured.
Further, as shown in fig. 2, 4 and 5, the support platform system 340 includes a first support platform frame 341, a second support platform frame 342 and a third support platform frame 343,
step S51 specifically includes:
s511, arranging a first support platform frame 341 and a second support platform frame 342 connected to each other in the axial direction of the shield machine main body 100 below the tail shield of the shield machine main body 100;
s512, translating the first supporting platform frame 341 and the second supporting platform frame 342 connected to each other to correspond to the anterior shield and the middle shield of the shield machine main unit 100, respectively;
s513, a third support platform frame 343 connected to the second support platform frame 342 is disposed below the shield tail of the shield tunneling machine main body 100.
The order of placement of the individual support platform frames of the support platform system 340 may be: the first support platform frame 341 is placed first, the second support platform frame 342 is placed second, and the third support platform frame 343 is placed last. After the support platform system 340 is installed, the first support platform frame 341, the second support platform frame 342, and the third support platform frame 343 correspond to the front shield, the middle shield, and the rear shield of the shield machine main body 100, respectively, along the axial direction of the shield machine main body 100. Therefore, by adopting the support platform system 340 including the first support platform frame 341, the second support platform frame 342 and the third support platform frame 343, the whole shield machine host 100 can be effectively supported.
Further, in step S511, referring to fig. 5 in combination with fig. 10, each of the first supporting platform frame 341, the second supporting platform frame 342, and the third supporting platform frame 343 includes: the multiple layers of supporting platform layers 344 are sequentially connected in the up-down direction, each layer of supporting platform layer 344 comprises two i-shaped members 3441 and four connecting plates 3442 which are arranged at intervals in the axial direction of the shield machine main body 100, the middle parts of the two i-shaped members 3441 are connected through connecting beams 3443, two connecting plates 3442 are connected to the tops of the two ends of the two i-shaped members 3441, and the other two connecting plates 3442 are connected to the bottoms of the two ends of the two i-shaped members 3441. Therefore, by adopting the multilayer supporting platform layer 344 with the structure, the supporting platform layer 344 is simple in structure and high in strength, and can well support the shield machine host 100. Optionally, two adjacent support platform layers 344 may be detachably connected by bolts, and are easy to assemble and disassemble and reusable. But is not limited thereto.
Alternatively, the i-shaped member 3441 is an i-steel, and the connecting plate 3442 is a steel plate. But is not limited thereto.
The first supporting platform frame 341 and the second supporting platform frame 342 are connected by a plurality of connecting rods 345, and the plurality of connecting rods 345 are respectively connected to two ends of the first supporting platform frame 341 and the second supporting platform frame 342. For example, in the example of fig. 5, the two ends of the first supporting platform frame 341 and the second supporting platform frame 342 are connected by two connecting rods 345 spaced up and down, respectively, and optionally, the two ends of each connecting rod 345 are detachably connected with the first supporting platform frame 341 and the second supporting platform frame 342 by bolts, respectively, so that the mounting and dismounting are convenient, and the reuse is possible. The second support platform frame 342 and the third support platform frame 343 are connected in the same manner as the first support platform frame 341 and the second support platform frame 342. The lowermost support platform level 344 may be removably attached to the bottom surface of the station shield shaft receiving bay 211 by bolts.
According to some embodiments of the present invention, referring to fig. 2, 4-5, after the shield machine host 100 is lifted to receive a predetermined height, the shield machine jacking and translation station-crossing construction method according to the embodiments of the present invention further includes:
and S514, mounting a connecting column 346 on the connecting rod 345, wherein the height of the connecting column 346 is the same as that of the supporting platform system 340.
For example, in the example of fig. 2, 4-5, two connecting columns 346 are provided between the first and second support platform frames 341, 342, two connecting columns 346 are provided between the second and third support platform frames 342, 343, and each connecting column 346 passes through a plurality of connecting rods 345 on the same side. Therefore, by arranging the connecting column 346 which has the same height as the supporting platform system 340, a part of the weight of the shield machine main machine 100 can act on the connecting column 346, so that the shield machine main machine 100 can be better supported, and the whole supporting system (including the jacking oil cylinder 321, the stepping shoe supporting system 330, the base 310 and the supporting platform system 340) is more stable.
Alternatively, as shown in fig. 11, each connecting column 346 may include two U-shaped channels 3461 respectively located at two sides of the connecting rod 345 and extending vertically, two L-shaped plates 3462 connected to each other are disposed between tops of the two U-shaped channels 3461, a bottom plate 3463 is connected between bottoms of the two U-shaped channels 3461, and a connecting seat 3464 is disposed on the bottom plate 3463 to connect and fasten lower portions of the two U-shaped channels 3461.
Optionally, connecting posts 346 are provided at 1/3-1/2 (inclusive) of the connecting bar 345. For example, as shown in fig. 2, 4-5, two connecting columns 346 between the first and second support platform frames 341, 342, and two connecting columns 346 between the second and third support platform frames 342, 343 are located at 1/3 of the corresponding connecting bar 345 adjacent to the station crossing rail 230, respectively. It is understood that the location of the connecting column 346 can be specifically configured according to actual conditions to better meet practical requirements.
According to some embodiments of the present invention, step S5 specifically includes:
s501, synchronously jacking all the jacking oil cylinders 321 at a preset speed until the shield tunneling machine main body 100 rises to a first receiving preset height;
s502, a base plate 331 is continuously filled between the bottom of the cylinder barrel and the top of the stepping shoe supporting system 330;
and S503, repeating the steps S501 and S502 until the shield tunneling machine host 100 ascends to a second preset receiving height, wherein the second preset receiving height is larger than the first preset receiving height and smaller than the preset receiving height.
Therefore, by controlling the single-step jacking height of the shield machine host 100 to be the first receiving preset height and installing the supporting platform system 340 after the shield machine host rises to the second receiving preset height, the jacking speed of the shield machine host 100 can be increased relatively while the safe and stable jacking of the shield machine host 100 is effectively ensured, the construction progress is accelerated, and the time is saved.
Alternatively, in step S501, the predetermined speed is v, where v satisfies: v is less than or equal to 500 mm/h. From this, make all jacking cylinders 321 according to the speed slow jacking that is not more than 500mm/h through setting up, can ensure that whole jacking process is reliable and more stable.
Optionally, in step S501, the first predetermined receiving height is d1Wherein d is1Satisfies the following conditions: d is not less than 30mm1Less than or equal to 40 mm. Therefore, the single-step jacking height of the shield machine main unit 100 is controlled to be between 30mm and 40mm, and the single-step jacking height is small, so that the situation that the jacking oil cylinder 321 is lost easily can be effectively guaranteedThe effect results in the serious consequence that the main machine 100 of the shield machine is unstable and overturns.
Optionally, in step S503, the second receiving predetermined height is d2Wherein d is2Satisfies the following conditions: d is more than or equal to 300mm2Less than or equal to 400 mm. Therefore, the supporting platform system 340 is installed after the shield machine host 100 is controlled to lift up by 300mm-400mm in multiple steps, the construction safety of the shield machine host 100 is guaranteed, the construction speed is accelerated, and the construction time is shortened. Further, d2Further satisfies the following conditions: d2＝350mm。
According to some embodiments of the present invention, as shown in fig. 2-5, the stepping shoe system 330 includes a plurality of sections connected in series in the up-down direction, and the first stepping shoe system is identical to the stepping shoe system 330 in structure. It is understood that in step S3, the number of the joints to be placed by the step shoe system 330 may be determined according to the actual design to better meet the actual application. Alternatively, adjacent two sections of the first stepping shoe system and the stepping shoe system 330 may be detachably connected by bolts.
Referring to fig. 5 in combination with fig. 8, each of the stepping shoe supporting systems 330 and the first stepping shoe supporting system respectively includes two plate bodies 332 disposed at an interval from top to bottom and a supporting structure disposed between the two plate bodies 332, the two plate bodies 332 are both horizontally disposed and parallel to each other, the supporting structure may include two i-shaped steels 333 spaced apart from each other, a plurality of reinforcing ribs 334 may be connected between the two i-shaped steels 333, and a side of each i-shaped member 3441 away from the other i-shaped steel 333 is also provided with a plurality of reinforcing ribs 334. Therefore, by adopting the stepping shoe supporting system 330 and the first stepping shoe supporting system with the above structures, the stepping shoe supporting system 330 and the first stepping shoe supporting system have high structural strength, and can well play a role in supporting the shield machine main body 100.
According to some embodiments of the present invention, referring to fig. 2, 4-5, in the process of lifting the shield machine main body 100 to a receiving predetermined height, the support platform system 340 is connected to a side of the station shield well receiving floor 211. For example, the third support platform frame 343 may be detachably connected to the side of the station shield well receiving floor 211 by bolts or the like. Therefore, the stability of the whole supporting platform system 340 in the horizontal plane can be effectively ensured.
In accordance with some embodiments of the present invention,
before step S3, the method further includes: s21, fixedly connecting the receiving base 350 to the bottom of the shield machine host 100;
before step S7, the method further includes: and S61, cutting off the connection between the shield machine main machine 100 and the receiving base 350.
For example, the receiving base 350 may be fixedly connected to the bottom of the shield machine main body 100 by welding. Therefore, the shield machine main machine 100 and the receiving base 350 can be integrally lifted, disassembly and secondary assembly are not needed, and the shield machine main machine has the advantages of convenience, rapidness, low cost and the like. Moreover, the receiving base 350 may be configured to relatively simplify the structural configuration of the support platform system 340, and the main shield machine 100 may be advanced through the receiving base 350 (e.g., the receiving base 350 may cooperate with the station-passing track 230 to advance the main shield machine 100 from the receiving shield well 210 to the originating shield well 220) during subsequent translation station-passing without additionally installing an advancing base.
After the supporting platform system 340 is disposed at the bottom of the host machine 100, the host machine 100 can be pressed on the supporting platform system 340 through the receiving base 350, as shown in fig. 3.
According to some alternative embodiments of the present invention, referring to fig. 3, the included angle between each lifting plate 320 and the vertical center line of the shield machine main unit 100 is α, wherein α satisfies 30 ° - α ° -60 °, and further α satisfies α ° -45 °, so that the shield machine main unit 100 can be more stably supported on the lifting cylinders 321 by limiting the included angle α between the lifting plate 320 and the vertical center line of the shield machine main unit 100 within the above range, and the lifting cylinders 321 are convenient to lift the shield machine main unit 100 upwards.
Alternatively, as shown in fig. 3 and 6, a side surface of the lifting plate 320 facing the shield machine main body 100 is adapted to the shape of the outer surface of the shield machine main body 100. For example, in the example of fig. 3 and 6, the upper surface of the lifting plate 320 may be formed in a curved surface. Therefore, the contact between the jacking plate 320 and the shield machine main unit 100 is surface contact, the acting force of the jacking oil cylinder 321 acting on the shield machine main unit 100 through the jacking plate 320 can be better transmitted to the shield machine main unit 100, and the connection between the jacking plate 320 and the shield machine main unit 100 is more reliable.
For example, the welding process of the lifting plate 320 and the shield machine main frame 100 may be as follows:
a. a measurement engineer performs accurate lofting;
b. a professional welder sequentially performs shield body surface cleaning, heating and support position supporting and fixing of the shield machine main machine 100 according to technical requirements;
c. confirming the position and the height again by a field engineer;
d. and performing two-protection welding layered welding, performing appearance inspection on the welding thickness and width, and performing nondestructive testing.
According to some embodiments of the invention, before step S5, the method further comprises:
the pump station and all the lift cylinders 321 are debugged to allow all the lift cylinders 321 to operate synchronously.
Specifically, for example, system maintenance and testing can be performed on the pump station according to specification and design requirements, an oil pipe is connected between the pump station and the jacking cylinder 321 after the requirements are met, the system testing is performed together with the jacking cylinder 321, the stroke of the jacking cylinder 321 is observed under the condition of a certain pressure, and the contraction condition of the jacking cylinder 321 is observed under the condition of a reduced pressure, so that all the jacking cylinders 321 can work synchronously.
Further, all the jacking cylinders 321 are connected in parallel with the pump station. Therefore, the pressure of all the jacking cylinders 321 is the same, and therefore all the jacking cylinders 321 can be effectively guaranteed to work synchronously.
According to some embodiments of the present invention, referring to fig. 2 in combination with fig. 4 to 5, a plurality of jacking cylinders 321 are arranged in pairs along the axial direction of the shield tunneling machine main body, and each pair of jacking cylinders 321 includes two jacking cylinders 321 symmetrically arranged along the vertical center line of the shield tunneling machine main body 100. For example, as shown in fig. 2, 4-5, two pairs of four jacking cylinders 321 are provided at the bottom of the shield tunneling machine body. Therefore, by adopting the jacking oil cylinders 321 arranged as above, the jacking oil cylinders 321 are substantially and uniformly distributed at the bottom of the shield tunneling machine main body, the jacking oil cylinders 321 are stressed more uniformly, and the jacking oil cylinders 321 can be well ensured to support the shield tunneling machine main body more stably.
According to some embodiments of the present invention, after the pump station and all the lift cylinders 321 are debugged, the bottoms of all the lift cylinders 321 are located in the same horizontal plane when there is no pressure. Therefore, all the jacking cylinders 321 can be further ensured to work synchronously.
Specifically, in step S7, the thrust jack is fixed to the shield machine main body 100, and the thrust jack pushes the reaction base 310 mounted on the station passing rail 230, so that the shield machine main body 100 moves from the receiving shield well 210 to the originating shield well 220. The pushing jack may be horizontally disposed at a lower portion of the shield machine main body 100, and when the pushing jack applies a force to the counterforce base 310, the pushing jack may push the shield machine main body 100 to horizontally move along the station-crossing track 230.
Optionally, the rated output load of the jacking cylinder 321 and the pump station is greater than or equal to 1.5 times of safety factor. Therefore, the jacking oil cylinder 321 and the pump station can be further ensured to work smoothly, and the condition of failure is not easy to occur.
Alternatively, as shown in fig. 9, the base 310 may include a first plate 311 and a second plate 312 arranged in parallel up and down, and a plurality of support plates 313 connected between the first plate 311 and the second plate 312, the first plate 311 being located above the second plate 312, and a surface area of the first plate 311 being smaller than a surface area of the second plate 312, the plurality of support plates 313 being arranged in sequence in a circumferential direction, and a width of each support plate 313 gradually increasing from top to bottom. Thus, the base 310 having the above-described structure can preferably serve as a foundation for supporting a load.
The shield tunneling machine jacking and translation station-crossing construction method according to one embodiment of the invention is described in detail below with reference to fig. 1-11.
1) First, a construction preparation is performed. Specifically, according to factors such as the size of the on-site shield tunneling machine host 100, the height difference of the station shield tunneling well receiving bottom plate 211, the height difference of the station shield tunneling well starting bottom plate 221 and the like, a pump station and a jacking oil cylinder 321 are customized, a jacking plate 320, a stepping shoe supporting system 330, a base 310, a supporting platform system 340 and the like are manufactured, on-site constructors and machines are properly prepared, and the pump station and the jacking oil cylinder 321 can purchase four sets of jacking oil cylinders 321 and pump stations with rated output loads not less than 1.5 times of safety factors according to shield parameters of the shield tunneling machine host 100.
2) Then, the base 310 and the lifting plate 320 are installed. Specifically, the shield machine main body 100 arrives on the receiving base 350 of the shield receiving area (for example, above the station shield well receiving bottom plate 211 in fig. 2); the base 310 is fixed on the bottom plate 3463 through bolts, the lifting plate 320 is welded on the shell of the shield machine main unit 100, and the bottom of the lifting plate 320 is connected with the corresponding lifting oil cylinder 321 through bolts; and welding the receiving base 350 and the shield machine host 100.
3) Next, the step shoe system 330 is installed. After the jacking cylinder 321 is fixed, a stepping shoe supporting system 330 is arranged right below the jacking cylinder, and the stepping shoe supporting system is connected with the base 310. Wherein, the number of the placing sections of the stepping shoe supporting system 330 is determined according to the actual design.
4) After the step shoe supporting system 330 is installed, the working state of the jacking cylinder 321 is adjusted through the pump station, specifically, the telescopic state of the jacking cylinder 321 is adjusted to enable the bottom of the piston rod of the jacking cylinder 321 to be tightly attached to the top surface of the step shoe supporting system 330, a backing plate 331 is arranged between the step shoe supporting system 330 and the cylinder barrel of the jacking cylinder 321, and the backing plate 331 just blocks the extending part of the piston rod. Optionally, the backing plate 331 is a U-shaped web. But is not limited thereto.
5) Then, the pump station and the lift cylinder 321 are debugged. Specifically, system maintenance and testing are performed on the pump station according to specification and design requirements, the pump station is connected with the plurality of jacking cylinders 321 through oil pipes after the requirements are met, the system testing is performed together with the jacking cylinders 321, the stroke of the jacking cylinders 321 is observed under the condition that the pressure is constant, and the contraction condition of the jacking cylinders 321 is observed under the condition that the pressure is reduced, so that all the jacking cylinders 321 can work synchronously.
6) Then, a single step jacking operation is performed. The four jacking oil cylinders 321 are synchronously jacked, specifically, a, the four jacking oil cylinders 321 synchronously start to work, and jacking slowly at a speed of not more than 500 mm/h; b. after the shield body of the whole shield machine host 100 is lifted by 30mm, a backing plate 331 with the thickness of 30mm is placed between the jacking plate 320 and the stepping shoe supporting system 330 by using tools such as a clamp and the like so as to protect the supporting function at any time when the pump station fails; c. the operation is repeated until the shield tunneling machine host 100 is lifted to 300 mm. At the moment, the height of one-time lifting of the shield machine host 100 is 30mm, and the height of one-step lifting is 300 mm. It can be understood that the elevation and the step height of the shield machine host 100 can be adjusted according to the design requirements.
7) A support platform system 340 is installed. Layered installation support platform system 340:
a. according to the design requirement, a first supporting platform frame 341 and a second supporting platform frame 342 of a first layer are installed and placed under a receiving base 350 of a tail shield of the shield machine host 100, and the first supporting platform frame 341 and the second supporting platform frame 342 are fixed through a connecting rod 345;
b. the connected first supporting platform frame 341 and second supporting platform frame 342 are translated to the anterior shield direction of the shield machine main unit 100 by using a forklift or other tools;
c. a third support platform frame 343 of the first layer is installed at the tail shield, and the third support platform frame 343 is connected to the first support platform frame 341 and the second support platform frame 342 by a connecting rod 345.
8) The pressure is slowly reduced and the jacking cylinder 321 is retracted, causing the receiving base 350 to press against the support platform system 340.
9) A section of first step shoe supporting system is installed below the jacking oil cylinder 321 and is bolted with the previous section of step shoe supporting system 330, and the bottom of the jacking oil cylinder 321 is tightly attached to the newly installed first step shoe supporting system. The pump station and the lift cylinders 321 are continuously debugged to ensure that all the lift cylinders 321 can work synchronously.
10) And repeating the steps 3-9, and jacking the shield machine host 100 to a preset receiving height. In the process, according to the design requirement, the supporting platform system 340 is connected to the side surface of the station shield well receiving bottom plate 211 through the connecting end 347, and after the shield machine host 100 reaches the receiving preset height, the fixed connecting column 346 is installed at about 1/3 of the connecting rod 345, and the height of the connecting column 346 is consistent with that of the supporting platform system 340.
11) Pushing and standing. The welding between the shield machine and the receiving base 350 is cut off, the shield machine main body 100 is pushed to pass through the station by the pushing jacks and the station passing rail 230, the pushing jacks are fixed on the shield machine main body 100, and the shield machine main body 100 can move forwards along the station passing rail 230 by the reaction base 310 arranged on the station passing rail 230.
12) When the starting shield well 220 at the other end of the station-crossing track 230 is reached, the host shield machine 100 is lowered onto the shield well starting base according to the jacking step by reverse operation.
The shield machine jacking and translation station-crossing construction method provided by the embodiment of the invention has the following advantages:
(1) the shield machine host 100 and the receiving base 350 can be integrally lifted, disassembly and secondary assembly are not needed, and the shield machine host 100 and the receiving base 350 have the advantages of convenience, quickness, low cost and the like.
(2) By adopting the stepping shoe supporting system 330 and the supporting platform system 340, the safety in the lifting and descending processes is ensured to the greatest extent. For example, in the process of jacking the jacking cylinders 321, the stepping shoe supporting system 330 can prevent the shield body of the shield machine main body 100 from overturning dangers due to sudden pressure relief of the jacking cylinders 321 by inserting the backing plate 331 after the plurality of jacking cylinders 321 are synchronously jacked for 3-4cm, and the supporting platform system 340 can enter next circulation jacking after the stepping shoe supporting system 330 is jacked for 30-40cm in an accumulated mode and is fixed by placing the supporting platform system 340, so that the supporting platform system 340 can reduce instability risks caused by overhigh one-time jacking shield body.
(3) The step shoe system 330, the base 310, the support platform system 340, etc. are all detachable and reusable.
(4) The systematic shield machine jacking and translation station-crossing construction method is provided, and the field construction is convenient to guide.
The shield machine jacking and translation station-crossing construction method provided by the embodiment of the invention belongs to the special purpose of the shield machine jacking and translation station-crossing, has the advantages of simple and convenient structure, complete and reliable measures and high safety, and can ensure the construction safety by means of stepped jacking and descending in a grading manner. Moreover, the lifting and translation station-crossing speed is high, the construction period can be effectively shortened, the construction cost and resources are saved, the controllability of the operation process is high, and the operation process can be repeatedly utilized.
The shield tunneling machine jacking and lowering apparatus 1000 according to the embodiment of the second aspect of the present invention. The shield machine jacking and descending device 1000 is suitable for the conditions that the station structure is complex, the bottom plate has large height difference, and is particularly suitable for the conditions that the jacking height is large and the construction risk is great. Specifically, for example, the shield machine may first perform a jacking operation through the shield machine jacking and lowering device 1000, then translate through the station, and then perform a lowering operation on the shield machine through the shield machine jacking and lowering device 1000.
According to the utility model discloses sufficient precision can be guaranteed to shield structure machine jacking and descending device 1000 when the construction, prevents that the shield body of shield structure machine from taking place the side and moving, roll and even topple to can guarantee the security of jacking and decline in-process well.
As shown in fig. 1-11, a shield tunneling machine jacking and descending device 1000 according to an embodiment of the present invention includes a plurality of pairs of bases 310, a plurality of step shoe supporting systems 330, a plurality of jacking plates 320, a plurality of jacking cylinders 321, and a plurality of backing plates 331. The shield machine lifting and lowering device 1000 may be used to implement the shield machine lifting and translating station-crossing construction method according to the above-described first aspect of the present invention.
Specifically, referring to fig. 5, a plurality of pairs of pedestals 310 are adapted to be spaced apart in the axial direction of the shield machine main body 100, and two of the pedestals 310 of each pair are adapted to be spaced apart in the lateral direction of the shield machine main body 100. In the description of the present invention, "a plurality" means two or more. For example, in the example of fig. 2 to 5, two pedestals 310 on the same cross section of the shield machine main body 100 are a pair, and two pairs of four pedestals 310 are arranged at intervals in the axial direction of the shield machine main body 100, wherein the two pedestals 310 in a pair are arranged at intervals left and right.
Pairs of pedestals 310 are adapted for fixed connection to the station shield shaft floor. Here, it should be noted that the station shield well bottom plate includes a station shield well receiving bottom plate 211 and a station shield well originating bottom plate 221, and at the receiving shield well 210, the base 310 is disposed on the station shield well receiving bottom plate 211; at the originating shield well 220, a base 310 is disposed on the station shield well originating floor 221. Each base 310 is fixed with respect to the station shield shaft floor, for example, each base 310 may be fixedly connected to the station shield shaft floor by bolts to function as a support for the shield machine main body 100, the corresponding jacking cylinder 321, and the jacking plate 320. After the host machine 100 of the shield machine is jacked up or descended, the base 310 can be detached from the shield shaft bottom plate of the station, and the normal use of the station is not influenced.
A plurality of step shoe systems 330 are respectively attached on top of the plurality of pedestals 310. For example, as shown in fig. 2-5, the step shoe system 330 may be removably attached to the top of the base 310 using bolts to facilitate mounting and dismounting between the step shoe system 330 and the base 310.
The plurality of jacking plates 320 are adapted to be fixedly attached to an outer surface of the shield tunneling machine host 100. The plurality of jacking cylinders 321 are respectively connected to the bottoms of the plurality of jacking plates 320, the plurality of jacking cylinders 321 correspond to the plurality of stepping shoe supporting systems 330 up and down respectively, each jacking cylinder 321 comprises a cylinder barrel and a piston rod which is arranged in the cylinder barrel and can extend downwards relative to the cylinder barrel, and the bottom of each piston rod is suitable for stopping against the upper surface of the corresponding stepping shoe supporting system 330. For example, in the example of fig. 2 to 5, a plurality of lifting plates 320 are fixedly connected to the lower portion of the shield machine main body 100 at intervals, for example, each lifting plate 320 may be welded to the shield machine main body 100 to ensure the reliability of the connection between the lifting plate 320 and the shield machine main body 100, so that the shield machine main body 100 is not prone to the danger of lateral movement, rolling or even overturning caused by the relative movement between the lifting plate 320 and the shield machine main body 100 in the subsequent lifting process. The jacking cylinders 321 may be removably coupled (e.g., bolted, etc.) to the corresponding jacking plates 320 to facilitate recycling of the jacking cylinders 321 and save energy. The plurality of jacking plates 320 and the plurality of jacking cylinders 321 are in up-down one-to-one correspondence with the plurality of bases 310 respectively, the number of the jacking plates 320, the number of the jacking cylinders 321 and the number of the bases 310 are the same, and the jacking plates 320, the corresponding jacking cylinders 321 and the bases 310 are sequentially arranged from top to bottom. The step shoe system 330 may be removably attached to the top of the base 310 using bolts to facilitate installation and removal between the step shoe system 330 and the base 310. The step shoe system 330 is located between the lift cylinder 321 and the base 310 in the up-down direction. For example, the bottom of each jacking cylinder 321 may rest on the upper surface of the step shoe system 330.
In fig. 2-5, four bases 310, four jacking plates 320 and four jacking cylinders 321 are shown for illustrative purposes, but it is obvious that a person of ordinary skill after reading the technical solutions of the present application can understand that the solutions can be applied to other numbers of bases 310, jacking plates 320 and jacking cylinders 321, and this also falls into the protection scope of the present invention. The specific number of the bases 310, the jacking plates 320 and the jacking cylinders 321 can be specifically set according to the actual size, the gravity center position and the like of the shield machine host 100, so that the shield machine host 100 can be supported more stably, and the shield machine host 100 is safer in the jacking process. For example, the number of the base 310, the jacking plate 320 and the jacking cylinder 321 may be six, eight, etc.
A plurality of pad plates 331 are adapted to be filled between the bottom of the cylinder tube and the upper surface of the stepping shoe system 330, the pad plates 331 having U-shaped openings through which the pad plates 331 catch the portions of the piston rods that extend out of the bottom of the jacking cylinders 321. For example, referring to fig. 7, the pad 331 is caught by the U-shaped opening 3311 thereof on a portion of the lower end of the piston rod of the lift cylinder 321 protruding out of the bottom of the lift cylinder 321, and at this time, the entire thickness of the pad 331 is equal to the length of the lower end of the piston rod of the lift cylinder 321 protruding out of the bottom of the lift cylinder 321. Therefore, when the jacking oil cylinder 321 fails, the backing plate 331 can have a supporting function at any time, so that the bottom of the jacking oil cylinder 321 (for example, the bottom of the cylinder barrel) is supported on the upper surface of the backing plate 331, thereby effectively preventing the shield machine main body 100 from lateral movement, rolling and even overturning, and effectively ensuring the safety of the shield machine main body 100 in the jacking and descending processes.
As shown in fig. 1, adopt according to the utility model discloses the above-mentioned shield constructs the construction process that the jacking of machine and the jacking of descending device come the jacking of shield structure machine specifically as follows:
firstly, fixing a plurality of bases 310 on a station shield well receiving bottom plate 211 for receiving a shield well 210 in pairs, fixedly connecting a plurality of jacking plates 320 to the lower part of the outer surface of a shield machine host 100, connecting a jacking oil cylinder 321 to the bottom of each jacking plate 320, wherein the jacking oil cylinders 321 correspond to the corresponding bases 310 up and down;
then, a step shoe system 330 is attached to each base 310;
next, adjusting the bottom of the piston rod of each jacking cylinder 321 to be tightly attached to the top of the stepping shoe supporting system 330, filling a backing plate 331 between the stepping shoe supporting system 330 and the cylinder barrel, and clamping the part of the piston rod extending out of the bottom of the jacking cylinder 321 by a U-shaped opening 3311 of the backing plate 331;
then, controlling all the jacking oil cylinders 321 to synchronously jack so as to enable the shield machine main body 100 to ascend to a first receiving preset height, and then continuously filling the base plates 331 between the bottom of the cylinder barrel and the top of the stepping shoe supporting system 330; this step is repeated until the shield tunneling machine main body 100 is lifted to receive a predetermined height. Wherein the predetermined height of reception is greater than the first predetermined height of reception.
When the shield machine is in descending operation, the shield machine host 100 is reversely operated to descend to the original preset height according to the jacking step. Specifically, for example, before the host computer 100 moves to the originating shield well 220, a plurality of bases 310 need to be fixed in pairs on the originating floor 221 of the station shield well of the originating shield well 220; a step shoe system 330 is then attached to each of the plurality of pedestals 310. When the shield machine main unit 100 moves to the initial shield well 220, the bottom of the piston rod of each jacking oil cylinder 321 is adjusted to be tightly attached to the top of the stepping shoe supporting system 330, then a base plate 331 is filled between the stepping shoe supporting system 330 and the cylinder barrel, and the part of the piston rod extending out of the bottom of the jacking oil cylinder 321 is clamped by the U-shaped opening 3311 of the base plate 331. Then, a part of the pads 331 are removed, and all the jacking cylinders 321 are controlled by the pump station to synchronously descend so as to enable the shield machine main unit 100 to descend by a first predetermined starting height, which is smaller than the predetermined starting height, and the first predetermined starting height is equal to the thickness of the removed part of the pads 331, so that the bottoms of all the jacking cylinders 321 can be supported on the upper surface of the uppermost pad 331. And repeating the steps of taking out the base plate 331 and controlling all the jacking oil cylinders 321 to synchronously descend until the shield machine host 100 descends to the original preset height.
According to the utility model discloses shield constructs quick-witted jacking and descending device 1000 through adopting foretell many to base 310, a plurality of step-by-step boots system 330 that prop, a plurality of jacking board 320, a plurality of jacking cylinder 321 and a plurality of backing plate 331, can effectively guarantee the security of shield constructs main frame 100 at jacking, decline in-process.
According to some embodiments of the present invention, referring to fig. 5 in combination with fig. 2-4, the bottom of the shield machine host 100 is adapted to be fixedly connected with a base. Here, it should be noted that the base includes a receiving base 350 and a starting base, and at the receiving shield well 210, the bottom of the shield machine host 100 is adapted to be connected with the receiving base 350; at the originating shield well 220, the bottom of the shield host 100 is adapted to have an originating pedestal attached. For example, at the receiving shield well 210, the receiving base 350 may be fixedly connected to the bottom of the shield machine main body 100 by welding. Therefore, the shield machine main machine 100 and the receiving base 350 can be integrally lifted, disassembly and secondary assembly are not needed, and the shield machine main machine has the advantages of convenience, rapidness, low cost and the like. Moreover, the receiving base 350 may be configured to relatively simplify the structural configuration of the support platform system 340, and the main shield machine 100 may be advanced through the receiving base 350 (e.g., the receiving base 350 may cooperate with the station-passing track 230 to advance the main shield machine 100 from the receiving shield well 210 to the originating shield well 220) during subsequent translation station-passing without additionally installing an advancing base.
Further, as shown in fig. 5 and 10, the shield tunneling machine jacking and lowering apparatus further includes: a support platform system 340, wherein the support platform system 340 is arranged between two of the pedestals 310 in each pair, and the bottom of the main shield machine 100 is suitable for being supported on the support platform system 340 through a base. From this, make the bottom of shield structure host computer 100 support on supporting platform system 340 through the base through the setting, shield structure host computer 100 supports jointly through supporting platform system 340 and jacking cylinder 321 this moment, can alleviate the pressure of jacking cylinder 321 like this relatively, has guaranteed the reliability of jacking cylinder 321 work, has guaranteed the security of jacking and decline in-process to the at utmost. Also, the number of the lift cylinders 321 can be relatively reduced, so that the cost can be reduced.
For example, when the shield machine performs a jacking operation, after the shield machine main body 100 is lifted to a first receiving predetermined height, the supporting platform system 340 may be installed below the bottom of the shield machine main body 100, then the piston rod of the jacking cylinder 321 is controlled to retract upwards so that the shield machine main body 100 is pressed on the supporting platform system 340, then the first further shoe supporting system is connected to the top of the stepping shoe supporting system 330, and the bottom of the corresponding jacking cylinder 321 is tightly attached to the first further shoe supporting system. And repeating the steps and the jacking operation of the shield machine main body 100 at least until the shield machine main body 100 is lifted to a receiving preset height. Optionally, the first step shoe system is identical in structure to the step shoe system 330.
Specifically, as shown in fig. 2-5 and 10, the support platform system 340 may include a plurality of support platform frames, which are adapted to be spaced apart along the axial direction of the shield machine main body 100, and two adjacent support platform frames are connected by a connecting rod 345. For example, in the example of fig. 2-5 and 10, the support platform system 340 includes a first support platform frame 341, a second support platform frame 342, and a third support platform frame 343 arranged in this order along the axial direction of the shield main machine 100. During assembly, a first supporting platform frame 341 and a second supporting platform frame 342 which are connected with each other are arranged below a tail shield of the shield machine main body 100 along the axial direction of the shield machine main body 100, then the first supporting platform frame 341 and the second supporting platform frame 342 which are connected with each other are translated to respectively correspond to a front shield and a middle shield of the shield machine main body 100, and then a third supporting platform frame 343 which is connected with the second supporting platform frame 342 is arranged below the shield tail of the shield machine main body 100. The order of placement of the individual support platform frames of the support platform system 340 may be: the first support platform frame 341 is placed first, the second support platform frame 342 is placed second, and the third support platform frame 343 is placed last. After the support platform system 340 is installed, the first support platform frame 341, the second support platform frame 342, and the third support platform frame 343 correspond to the front shield, the middle shield, and the rear shield of the shield machine main body 100, respectively, along the axial direction of the shield machine main body 100. Therefore, by adopting the support platform system 340 including the first support platform frame 341, the second support platform frame 342 and the third support platform frame 343, the whole shield machine host 100 can be effectively supported.
Alternatively, referring to fig. 10, each support platform frame includes a plurality of layers of support platform layers 344 sequentially connected in the up-down direction, each layer of support platform layer 344 includes two i-shaped members 3441 and four connecting plates 3442 arranged at intervals in the axial direction of the shield machine main body 100, the middle portions of the two i-shaped members 3441 are connected by connecting beams 3443, two connecting plates 3442 are connected to the top portions of the two ends of the two i-shaped members 3441, and the other two connecting plates 3442 are connected to the bottom portions of the two ends of the two i-shaped members 3441. Therefore, by adopting the multilayer supporting platform layer 344 with the structure, the supporting platform layer 344 is simple in structure and high in strength, and can well support the shield machine host 100. Optionally, two adjacent support platform layers 344 may be detachably connected by bolts, and are easy to assemble and disassemble and reusable. But is not limited thereto.
Alternatively, the i-shaped member 3441 is an i-steel, and the connecting plate 3442 is a steel plate. But is not limited thereto.
Referring to fig. 5, a plurality of connection rods 345 are respectively connected to both ends of the first and second support platform frames 341 and 342. For example, in the example of fig. 1, the two ends of the first supporting platform frame 341 and the second supporting platform frame 342 are connected by two connecting rods 345 spaced up and down, respectively, and optionally, the two ends of each connecting rod 345 are detachably connected with the first supporting platform frame 341 and the second supporting platform frame 342 by bolts, respectively, so that the mounting and dismounting are convenient, and the reuse is possible. The second support platform frame 342 and the third support platform frame 343 are connected in the same manner as the first support platform frame 341 and the second support platform frame 342. The lowermost support platform level 344 may be removably attached to the bottom surface of the station shield shaft receiving bay 211 by bolts.
According to some embodiments of the present invention, as shown in fig. 1, 2 and 4, 11, the connecting rod is provided with a connecting column extending in a vertical direction, and the height of the connecting column is the same as the height of the supporting platform system. For example, in the example of fig. 1, 2 and 4, 11, two connecting columns 346 are provided between the first 341 and second 342 support platform frames, two connecting columns 346 are provided between the second 342 and third 343 support platform frames, and each connecting column 346 passes through a plurality of connecting rods 345 on the same side. Therefore, by arranging the connecting column 346 which has the same height as the supporting platform system 340, a part of the weight of the shield machine main machine 100 can act on the connecting column 346, so that the shield machine main machine 100 can be better supported, and the whole supporting system (including the jacking oil cylinder 321, the stepping shoe supporting system 330, the base 310 and the supporting platform system 340) is more stable.
Alternatively, as shown in fig. 11, each connecting column 346 may include two U-shaped channels 3461 respectively located at two sides of the connecting rod 345 and extending vertically, two L-shaped plates 3462 connected to each other are disposed between tops of the two U-shaped channels 3461, a bottom plate 3463 is connected between bottoms of the two U-shaped channels 3461, and a connecting seat 3464 is disposed on the bottom plate 3463 to connect and fasten lower portions of the two U-shaped channels 3461.
Optionally, the connecting posts are provided at 1/3-1/2 (inclusive) of the connecting rods. For example, as shown in fig. 1, 2 and 4, two connecting columns 346 between the first and second support platform frames 341 and 342, and two connecting columns 346 between the second and third support platform frames 342 and 343 are respectively located at 1/3 of the corresponding connecting bar 345 adjacent to the station crossing rail 230. It is understood that the location of the connecting column 346 can be specifically configured according to actual conditions to better meet practical requirements.
According to some embodiments of the present invention, in combination with fig. 3, the included angle between each jacking plate and the vertical center line of the shield machine host is α, wherein α is equal to or larger than 30 ° and equal to or smaller than α and equal to or smaller than 60 °, further, the included angle α is further equal to or larger than α and equal to 45 °, and therefore, by limiting the included angle α between the jacking plate 320 and the vertical center line of the shield machine host 100 within the above range, the shield machine host 100 can be more stably supported on the jacking cylinder 321, and the jacking cylinder 321 is convenient to lift the shield machine host 100 upwards.
Optionally, as shown in fig. 3 and 5, a side surface of the jacking plate facing the main body of the shield machine is adapted to fit the shape of the outer surface of the main body of the shield machine. For example, in the example of fig. 3 and 6, the upper surface of the lifting plate 320 may be formed in a curved surface. Therefore, the contact between the jacking plate 320 and the shield machine main unit 100 is surface contact, the acting force of the jacking oil cylinder 321 acting on the shield machine main unit 100 through the jacking plate 320 can be better transmitted to the shield machine main unit 100, and the connection between the jacking plate 320 and the shield machine main unit 100 is more reliable.
According to the utility model discloses shield constructs quick-witted jacking and descending device 1000 belongs to the shield and constructs quick-witted jacking and descend special, and the structure is simple and convenient, and the measure is complete, reliable, and the security is high, can realize hierarchical marching type jacking and decline, ensures construction safety. Moreover, the lifting and translation station-crossing speed is high, the construction period can be effectively shortened, the construction cost and resources are saved, the controllability of the operation process is high, and the operation process can be repeatedly utilized.
In the description of the present invention, it is to be understood that the terms "center," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the positional or orientational relationships indicated in the drawings to facilitate the description of the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.
In the description of the present invention, "the first feature", "the second feature", and "the third feature" may include one or more of the features.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (32)

1. A shield machine jacking and translation station-crossing construction method is characterized by comprising the following steps:
s1, construction preparation: customizing a pump station according to the size of a shield machine host machine and the height difference between a receiving bottom plate of a station shield well and an originating bottom plate of the station shield well, and manufacturing a base, a jacking plate, a stepping shoe supporting system and a station passing track;
s2, mounting the base and the jacking plate: fixing a plurality of bases on a station shield well receiving bottom plate in pairs; fixedly connecting a plurality of jacking plates to the lower part of the outer surface of the shield machine host, wherein the bottom of each jacking plate is connected with a jacking oil cylinder, the jacking oil cylinders vertically correspond to the corresponding bases, and each jacking oil cylinder comprises a cylinder barrel and a piston rod which is arranged in the cylinder barrel and can extend downwards relative to the cylinder barrel;
s3, installation of the stepping shoe supporting system: each base is connected with a stepping shoe supporting system, and the stepping shoe supporting systems are located between the bases and the corresponding jacking oil cylinders;
s4, adjusting the bottom of the piston rod of each jacking oil cylinder to be tightly attached to the top of the stepping shoe supporting system; a base plate is filled between the stepping shoe supporting system and the cylinder barrel, and a U-shaped opening of the base plate clamps the part of the piston rod extending out of the bottom of the jacking cylinder;
s5, single-step jacking: controlling all the jacking oil cylinders to synchronously jack so as to enable the shield machine host to rise to a first receiving preset height, and then continuously filling a base plate between the bottom of the cylinder barrel and the top of the stepping shoe supporting system;
s6, repeating at least the step S5 until the shield machine host is lifted to a receiving preset height, wherein the receiving preset height is larger than the first receiving preset height;
s7, pushing and standing: pushing the host machine of the shield machine from the receiving shield well to the originating shield well through the station-passing track;
and S8, when the host machine of the shield machine reaches the starting shield well, reversely operating to enable the host machine of the shield machine to descend to the preset starting height according to the jacking step.
2. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, further comprising, before step S6:
s51, mounting a supporting platform system below the bottom of the main machine of the shield machine, wherein the supporting platform system is located between the paired bases in the transverse direction of the main machine of the shield machine;
s52, controlling the piston rod to retract upwards so that the main machine of the shield machine presses the supporting platform system;
s53, connecting a first step shoe supporting system to the top of the step shoe supporting system, and closely attaching the bottom of the corresponding jacking oil cylinder to the first step shoe supporting system;
the step S6 is repeated at least until the shield machine host is lifted to the receiving preset height, wherein the steps S5, S51, S52 and S53 are repeated.
3. The shield tunneling machine jacking and translating station-passing construction method of claim 2, wherein the support platform system comprises a first support platform frame to a third support platform frame,
step S51 specifically includes:
s511, arranging the first supporting platform frame and the second supporting platform frame which are connected with each other along the axial direction of the main machine of the shield machine and below a tail shield of the main machine of the shield machine;
s512, translating the first supporting platform frame and the second supporting platform frame which are connected with each other to respectively correspond to a front shield and a middle shield of the host machine of the shield machine;
and S513, arranging a third supporting platform frame connected with the second supporting platform frame below the shield tail of the shield machine host.
4. The shield tunneling machine jacking and translating station-crossing construction method according to claim 3, wherein the first to third support platform frames each comprise:
the multi-layer supporting platform layer is sequentially connected along the vertical direction, each layer of supporting platform layer comprises two I-shaped parts and four connecting plates which are arranged along the axial direction of the main machine of the shield tunneling machine at intervals, the middle parts of the two I-shaped parts are connected through connecting beams, the two connecting plates are connected to the tops of the two ends of the two I-shaped parts, the other two connecting plates are connected to the bottoms of the two ends of the two I-shaped parts,
the first supporting platform frame and the second supporting platform frame are connected through a plurality of connecting rods, the connecting rods are respectively connected at two ends of the first supporting platform frame and the second supporting platform frame,
the second support platform frame and the third support platform frame are connected in the same manner as the first support platform frame and the second support platform frame.
5. The shield tunneling machine jacking and translation station-passing construction method according to claim 4, wherein after the shield tunneling machine host is lifted to the receiving preset height, the method further comprises the following steps:
and S514, mounting a connecting column on the connecting rod, wherein the height of the connecting column is the same as that of the supporting platform system.
6. The shield tunneling machine jacking and translating station-passing construction method of claim 5, wherein the connecting column is provided at 1/3-1/2 of the connecting rod.
7. The shield tunneling machine jacking and translating station-passing construction method according to any one of claims 2-6, wherein the step S5 specifically comprises:
s501, synchronously jacking all the jacking oil cylinders according to a preset speed until the shield machine host rises to the first receiving preset height;
s502, continuously filling a base plate between the bottom of the cylinder barrel and the top of the stepping shoe supporting system;
and S503, repeating the steps S501 and S502 until the shield machine host ascends by a second preset receiving height, wherein the second preset receiving height is larger than the first preset receiving height and smaller than the preset receiving height.
8. The shield tunneling machine jacking and translating station-passing construction method according to claim 7, wherein in the step S501, the predetermined speed is v, wherein v satisfies: v is less than or equal to 500 mm/h.
9. The shield tunneling machine jacking and translating station-crossing construction method according to claim 7, wherein in the step S501, the first receiving preset height is d1Wherein said d1Satisfies the following conditions: d is not less than 30mm1≤40mm。
10. The shield tunneling machine jacking and translating station-crossing construction method according to claim 7, wherein in the step S503, the second receiving preset height is d2Wherein said d2Satisfies the following conditions: d is more than or equal to 300mm2≤400mm。
11. The shield tunneling machine jacking and translating station-crossing construction of claim 10Method, characterized in that d is2Further satisfies the following conditions: d2＝350mm。
12. The shield tunneling machine jacking and translating station-passing construction method according to claim 2, wherein the stepping shoe-supporting system comprises a plurality of sections connected in sequence in an up-down direction,
the first step shoe supporting system and the stepping shoe supporting system have the same structure.
13. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, wherein the support platform system is connected to the side of the station shield well receiving floor during the process of lifting the shield tunneling machine host to the receiving predetermined height.
14. The shield tunneling machine jacking and translating station-passing construction method according to claim 1,
before step S3, the method further includes: s21, fixedly connecting the receiving base to the bottom of the host machine of the shield machine;
before step S7, the method further includes: and S61, cutting off the connection between the shield machine host and the receiving base.
15. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, wherein an included angle between each jacking plate and a vertical center line of a host machine of the shield tunneling machine is α, wherein the α satisfies that 30 degrees is larger than or equal to α degrees and smaller than or equal to 60 degrees.
16. The shield tunneling machine jacking and translating station-crossing construction method according to claim 15, wherein the α further satisfies α -45 °.
17. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, wherein a side surface of the jacking plate facing the shield tunneling machine main body is matched with the shape of the outer surface of the shield tunneling machine main body.
18. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, further comprising, before the step S5:
and debugging the pump station and all the jacking oil cylinders to enable all the jacking oil cylinders to work synchronously.
19. The shield tunneling machine jacking and translating station-passing construction method according to claim 18, wherein all the jacking cylinders are connected in parallel with the pump station.
20. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, wherein a plurality of jacking cylinders are arranged in pairs along the axial direction of the shield tunneling machine main body, and each pair of jacking cylinders comprises two jacking cylinders symmetrically arranged along a vertical center line of the shield tunneling machine main body.
21. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, wherein after the pump station and all the jacking cylinders are debugged, the bottoms of all the jacking cylinders are positioned in the same horizontal plane when no pressure exists.
22. The shield tunneling machine jacking and translating station-crossing construction method according to claim 1, wherein in step S7, a pushing jack is fixed on the shield tunneling machine main body, and the pushing jack pushes a counterforce base installed on the station-crossing rail to move the shield tunneling machine main body from the receiving shield well to the originating shield well.
23. The shield tunneling machine jacking and translating station-passing construction method according to claim 1, wherein rated output loads of the jacking oil cylinder and the pump station are greater than or equal to 1.5 times of safety factor.
24. A shield machine lifting and lowering apparatus for implementing the shield machine lifting and translation station-crossing construction method according to any one of claims 1 to 23, comprising:
the station shield well comprises a plurality of pairs of pedestals, a plurality of pairs of pedestals and a plurality of connecting pieces, wherein the plurality of pairs of pedestals are suitable for being arranged at intervals along the axial direction of a shield machine host, two of the pedestals in each pair are suitable for being spaced apart in the transverse direction of the shield machine host, and the plurality of pairs of pedestals are suitable for being fixedly connected to a station shield well bottom plate;
the plurality of stepping shoe supporting systems are respectively connected to the tops of the plurality of bases;
the plurality of jacking plates are suitable for being fixedly connected to the outer surface of the shield machine host;
the jacking cylinders are respectively connected to the bottoms of the jacking plates and correspond to the stepping shoe supporting systems up and down respectively, each jacking cylinder comprises a cylinder barrel and a piston rod which is arranged in the cylinder barrel and can extend downwards relative to the cylinder barrel, and the bottom of each piston rod is suitable for stopping against the upper surface of the corresponding stepping shoe supporting system;
the bottom of the cylinder barrel is filled with the stepping shoe supporting system, the stepping shoe supporting system comprises a plurality of base plates, the base plates are suitable for being filled between the bottom of the cylinder barrel and the upper surface of the stepping shoe supporting system, each base plate is provided with a U-shaped opening, and the part, extending out of the bottom of the jacking oil cylinder, of the piston rod is clamped by the base plates through the U-shaped openings.
25. The shield tunneling machine jacking and lowering apparatus of claim 24, wherein a bottom of the shield tunneling machine main body is adapted to be fixedly connected with a base,
the shield constructs quick-witted jacking device and further includes:
and the supporting platform system is arranged between two of the bases in each pair, and the bottom of the main machine of the shield tunneling machine is suitable for being supported on the supporting platform system.
26. The shield machine jacking and lowering device of claim 25, wherein the support platform system comprises a plurality of support platform frames, the support platform frames are adapted to be spaced apart in an axial direction of the shield machine main body, and two adjacent support platform frames are connected by a connecting rod.
27. The shield tunneling machine jacking and descending device according to claim 26, wherein each supporting platform frame comprises a plurality of supporting platform layers sequentially connected in the vertical direction, each supporting platform layer comprises two i-shaped members and four connecting plates, the two i-shaped members are arranged at intervals in the axial direction of the shield tunneling machine main body, the middle parts of the two i-shaped members are connected through connecting beams, two connecting plates are connected to the tops of two ends of the two i-shaped members, and the other two connecting plates are connected to the bottoms of two ends of the two i-shaped members.
28. The shield tunneling machine jacking and lowering apparatus of claim 26, wherein a connecting column extending in a vertical direction is provided at the connecting rod, and the height of the connecting column is the same as the height of the support platform system.
29. The shield tunneling machine jacking and lowering apparatus of claim 28, wherein the connecting column is provided at 1/3-1/2 of the connecting rod.
30. The shield tunneling machine jacking and lowering apparatus of any one of claims 24-29, wherein each jacking plate forms an angle α with the vertical centerline of the shield tunneling machine host, wherein the angle α satisfies 30 ° ≦ α ≦ 60 °.
31. The shield tunneling machine jacking and lowering apparatus of claim 30, wherein said α further satisfies the condition α -45 °.
32. The shield tunneling machine jacking and lowering apparatus of claim 24, wherein a side surface of the jacking plate facing the shield tunneling machine main body is adapted to fit a shape of the outer surface of the shield tunneling machine main body.
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