CN113931074B - Construction method for rapidly paving frame of railway bridge girder erection machine in emergency limit state of business line - Google Patents

Construction method for rapidly paving frame of railway bridge girder erection machine in emergency limit state of business line Download PDF

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CN113931074B
CN113931074B CN202111293816.4A CN202111293816A CN113931074B CN 113931074 B CN113931074 B CN 113931074B CN 202111293816 A CN202111293816 A CN 202111293816A CN 113931074 B CN113931074 B CN 113931074B
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bridge
girder erection
erection machine
railway
bridge girder
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CN113931074A (en
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刘建文
石军伟
孙猛
秦洪义
平栓玲
徐明江
陈继忠
吴阳
杨秀清
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Zhengzhou Engineering Co Ltd of China Railway Seventh Group Co Ltd
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Zhengzhou Engineering Co Ltd of China Railway Seventh Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

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Abstract

The invention discloses a construction method for rapidly paving a frame of a railway bridge girder erection machine in a business line emergency limit state, which comprises the following steps of (1) preparing, namely conveying prefabricated T beams of the same type in an external girder field or dismantling T beams of a disabled bridge to a station for use by transporting Liang Dalie; conveying the bridge girder erection machine in a split state and the replacement gantry crane to a station through a bridge girder erection machine large column and installing; the construction bridge damage section bridge lower structure (2) carries out power-off work (3) in the construction range, and the bridge girder of the bridge girder erection machine is paved: the method comprises the steps of (1) carrying out track shifting sequential connection on a damaged limit curve railway business line at the bridge head, and/or lowering the super-high of the bridge head curve to zero through a falling track, and reinforcing a bridge head roadbed; and then, adding a power passing limit state curve through the locomotive pushing bridge girder erection machine, and carrying out quick evacuation of the bridge girder erection machine (4) on the bridge damaged section. The invention can realize the rapid bridge construction of the business line railway bridge in emergency and is also suitable for the rapid bridge replacement construction in the upgrading and reconstruction of the existing railway.

Description

Construction method for rapidly paving frame of railway bridge girder erection machine in emergency limit state of business line
Technical Field
The invention relates to the technical field of bridge and track recovery line driving during repair of business line emergency, in particular to a construction method for rapidly paving a railway bridge girder erection machine in a business line emergency limit state.
Background
In order to improve the mountain traffic condition and strengthen the connection between residents and the outside, the mountain area is driven to economically develop, and a plurality of railway lines leading to the mountain areas in the west and the south are built in China. Compared with plain areas, mountainous areas have complex terrains and changeable climates, and when natural disasters such as earthquakes, floods and the like are encountered, bridge collapse, damage and railway driving interruption occur easily. For railway bridges built under the limit small radius curve less than or equal to 300m, or the limit large slope greater than or equal to 18 per mill, or the super limit working condition of superposition of the two conditions, when dangerous situations occur and need to be repaired, the construction materials are slowly transported due to the limitation of terrains and traffic, the bridge girder erection equipment is difficult to install and use, the construction difficulty is high, at least more than 2 months are needed for restoring the traffic, and the normal operation of a railway line is greatly influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a construction method for rapidly paving a frame of a railway bridge girder erection machine in a business line emergency limit state, which comprises the following steps:
the construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line is suitable for the railway business line to pass through a station, the station and the bridge damage section can normally run, and the railway business line is connected with a plurality of station lines in the station through a duplex crossing bifurcation; the damaged railway business line at the bridge damage section near the bridge head has a limit state of less than or equal to 300m limit small radius curve, or greater than or equal to 18 permillage large gradient, or superposition of the two conditions, and the emergency is that the T-beam erection and the track laying of the damaged bridge are required to be completed quickly, and the line driving is restored quickly; the construction method comprises the following construction steps:
first, preparing: the prefabricated T beams of the same type or the T beams of the removed bridge are transported to a station for use by a transport Liang Dalie; conveying the bridge girder erection machine in a split state and the replacement gantry crane to a station through a bridge girder erection machine large column; the method comprises the steps of carrying out grouping on a transport Liang Dalie and a bridge girder erection machine in a station, assembling the bridge girder erection machine, installing a replacement gantry crane on a straight line section of a railway business line, turning a traction locomotive into a line and standing by, transferring the bridge girder erection machine to the line and temporarily storing the line;
meanwhile, constructing a lower structure of the bridge damaged section of the bridge, filling a roadbed at the back of the bridge and reinforcing a flange plate of the bridge abutment; pre-paving a track panel on a roadbed outside a bridge head line, wherein the length of the track panel is smaller than that of a beam;
secondly, modifying the contact net: the station track occupied by the replacement gantry crane and the overhead contact network in the bridge head range are powered off, the 100m contact network near the replacement gantry crane is lifted by at least 6.3m, and meanwhile, the contact network rod affecting the operation of the bridge girder erection machine in the 100m range of the bridge head is removed;
thirdly, paving a girder of the bridge girder erection machine: firstly, shifting and connecting a damaged limit curve railway business line at the bridge head, and/or lowering the super-high of the bridge head curve to zero through a falling road, and reinforcing a bridge head roadbed; then, a power passing limit state curve is increased through a locomotive pushing bridge girder erection machine, and girder erection is carried out on the bridge damaged section; in the girder erection process, when the erection of a hole girder is completed, a bridge girder erection machine is pulled back to the climbing limit state gradient to the bridge head through a locomotive, a track panel which is placed on the roadbed of the bridge head in advance is hung, and the track panel is longitudinally paved on the ballast of the girder surface;
fourth, the bridge machine is quickly evacuated: after the last hole rail laying is completed, the 0# supporting leg of the bridge girder erection machine is dismantled on site, the bridge girder erection machine is pulled by a locomotive to quickly pass through a limit small curve and/or a large gradient to return to a station and to be disassembled and evacuated, and meanwhile, the bridge deck system and four electric devices are quickly recovered, so that the operation of a railway business line is ensured to be recovered within 24 hours.
The minimum curve radius of a normal girder erection machine is 600m, the minimum curve radius of a track-shifting girder erection piece is 300m, the maximum uphill gradient is 16 per mill through the minimum curve radius of 180m, the working height is 7.36m, and the working height of a replacement gantry crane is 6.3m.
The large train of the transporting Liang Dalie and bridging machines comprises at least one locomotive and a plurality of railway flat plates.
The railway business line comprises an uplink line and a downlink line which are arranged in parallel; the radius of the inner curve of the compound crossing turnout is 180m, or larger than or equal to 18 per mill of large gradient, or the limit state of superposition of the two conditions.
The construction of the lower structure of the bridge damaged section comprises newly-built pile foundations, bearing platforms, pier bodies and cushion stones, wherein the pier bodies and the cushion stones are poured by C50 concrete; the step of filling the roadbed at the back of the platform refers to filling by adopting cement broken stone stabilized soil; the bridge abutment flange plate reinforcement refers to reinforcement by adopting a wooden sleeper.
The track lining means draws a beam-erecting working condition diagram through CAD software to determine curve track lining parameters, and then carries out track lining correction on a 300m limit small radius curve; the falling finger reduces the extra-high of the existing curve to zero; the bridge head roadbed reinforcement refers to the improvement of the bearing capacity of an old roadbed with a bridge head 30m range and a new roadbed with cement and crushed stone stabilized soil at the bridge head by penetrating a single wooden sleeper.
When the damaged bridge is in a limit small radius curve, the frame beams are sequentially erected from outside to inside, and the diaphragm concrete is replaced by grouting materials during the frame beams.
The track panel is positioned on the roadbed between the uplink line and the downlink line of the bridge head, and the track panel is hung and grabbed through the large arm of the bridge girder erection machine.
The quick recovery bridge deck system is characterized in that a bridge deck system bracket is installed by utilizing gaps in the girder erecting process, a wood plate is utilized to replace a concrete walking plate to be paved on temporarily so as to ensure the passing of personnel, and a cable groove is quickly and coarsely installed so as to ensure the penetration of a photoelectric cable.
The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line effectively utilizes the existing station and the existing railway line as the running channels of the girder transportation and railway bridge girder erection machine, and solves the problems that the girder erection equipment cannot reach and the girder yard construction is difficult due to traffic in mountain areas; the T beams adopt prefabricated T beams of the same type which are used for other projects in the nearby beam field or waste T beams which are detached from the inactivated railway and can be recycled, so that the defect that the traditional beam manufacturing mode by adopting the site new beam manufacturing mode needs to take more than 40 days is overcome; the large beam transporting column is adopted in the transportation of the T beam, so that the beam piece to be erected can be transported to the rescue site at one time, and the T beam transporting column has great advantages compared with the traditional sporadic transportation mode in terms of transportation time and transportation cost; the bridge girder erection machines which are transported to the stations in large columns can be quickly grouped and installed within two days, so that the problems of slow transportation by roads, narrow site assembly field, overlong installation period (15 days) and the like in the traditional method are solved; the locomotive traction bridge girder erection machine solves the problem that the bridge girder erection machine is insufficient in power for ascending a slope through a 300m limit small radius curve and an 18 permillage limit large gradient superposition section at the bridge head, and solves the problem that the bridge girder erection machine is insufficient in power for ascending a slope through 180m limit small curve turning lines and 18 permillage limit large gradient superposition of a compound intersection bifurcation in a throat area; the compound crossing turnout is beneficial to the quick line transfer and transition of the upper and lower positive line rescue frame beams, solves the problem of line transfer of the upper and lower positive line rescue frame beams in the section, and solves the problems that the operation of a locomotive traction bridge girder erection machine and the line transfer of a locomotive for transporting Liang Dalie empty vehicles to an idle track conflict with the line transport beam of a motor-driven flat plate; the safety risk of repeated transverse movement of the bridge girder erection machine with the limit small curve radius in the girder erection process is solved through the track shifting, the girder erection machine is quick and economical, and the girder erection work efficiency is improved; the track panel is arranged on the bridge head roadbed, so that the number of track panels to be transported is reduced, the workload of on-site track laying during the frame laying is reduced, the large arm of the bridge girder erection machine is adopted to cantilever and grasp, the labor intensity and the labor amount of workers are reduced, the overall construction period is greatly shortened, and the traffic is restored to the pre-disaster level in the shortest time.
Drawings
Fig. 1 is a schematic plan view of a railway line, station, bridge damage section in the present invention.
Fig. 1-2 are schematic longitudinal cross-sectional views of fig. 1.
Fig. 2-1 is a schematic plan view of the present invention with T-beams removed from a stopped railway bridge and transported with highway girder carriers for reinforcement.
FIG. 2-2 is a schematic longitudinal section of FIG. 2-1.
Fig. 2-3 are schematic plan views of the present invention for transporting a highway girder truck into a nearby yard and transferring T-beams to rail transport Liang Dalie loading.
Fig. 2-4 are schematic longitudinal cross-sectional views of fig. 2-3.
FIG. 3-1 is a schematic plan view of a large-row grouping, reinforcing and transporting of the railway bridge girder erection machine of the present invention.
Fig. 3-2 is an elevational schematic of fig. 3-1.
Fig. 4-1 is a schematic diagram of a small radius curve segment track lining of a railway business line limit in the present invention.
Fig. 4-2 is a schematic diagram of the invention for the road business line limit small radius curve segment falling and reinforcing.
Fig. 4-3 is a top view of fig. 4-2.
Fig. 4-4 are schematic views of bridge deck reinforcement and back of deck roadbed filling in accordance with the present invention.
Fig. 4-5 are right side views of fig. 4-4.
Fig. 5-1 is a schematic view of a girder of a limit small radius curve segment of a railway business line in the present invention.
Fig. 5-2 is an elevational schematic of fig. 5-1.
Fig. 6-1 is a schematic diagram of a railway business line limit small radius curve segment rail laying in the present invention.
Fig. 6-2 is an elevational schematic of fig. 6-1.
FIG. 7-1 is a schematic plan view of the invention erecting a final 1-hole 32m beam.
Fig. 7-2 is an elevational schematic of fig. 7-1.
FIG. 8-1 is a schematic plan view of the bridge girder erection machine of the present invention with the 0# leg removed at the bridge head.
Fig. 8-2 is an elevational schematic of fig. 8-1.
Fig. 8-3 are schematic plan views of the crossing region of a locomotive traction bridge machine in accordance with the present invention.
Fig. 9 is an elevation view of the rapid recovery of the deck system and four-electric device of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings, and the embodiments and specific construction processes of the present invention are given by implementing the embodiments on the premise of the technical solution of the present invention, but the scope of protection of the present invention is not limited to the following embodiments.
As shown in fig. 1-9, a bridge section of a railway business line (including an uplink line 101 and a downlink line 102) passing through a station K is damaged under the action of flood, the bridge damage section M and the station K, and the uplink line 101 and the downlink line 102 at the other end of the station K can normally operate, the railway business line is connected with a plurality of station lines 103 in the station K through a compound cross switch 1 (the radius of a turnout inner curve is 180M), a damaged railway business line at the position, close to a bridge head L, of the bridge damage section M has a limit small radius curve less than or equal to 300M, or a large gradient greater than or equal to 18 per mill, or a limit state in which the two conditions are overlapped (in this embodiment, the condition of a downhill laying frame in which the two conditions are overlapped), and the construction method for rapidly laying a frame of the railway bridge girder erection machine under the limit state of emergency of the business line comprises the following construction steps:
firstly, preparing, namely transporting the T beam and the bridge girder erection machine and constructing a bridge lower structure of a bridge damaged section M. The method comprises the following steps:
1) In order to save the construction period, as shown in fig. 2-1 and 2, 2-3 and 2-4, the present embodiment uses two 300T cranes to detach 12 curved T beams 24.6m long from the railway bridge N that has been deactivated, place them on a girder transporting vehicle for road transportation, transport to a nearby cargo yard G, and then place them on a transport Liang Dalie 201 for standby via an uplink 101 or a downlink 102 to a station K (see fig. 1 and 1-2) for emergency bridging; the T beam of the railway bridge which is removed and stopped is saved by 40 days compared with the conventional new T beam, if the nearby beam field has the prefabricated T beam with the same size for other projects, the T beam can be transported to a station K for use by the method, so that the construction period is saved; the transport Liang Dalie is a plurality of railway flat plates pulled by three locomotives, and the transport capacity is enough and is more guaranteed than the conventional sporadic transport;
2) As shown in fig. 3-1 and fig. 3-2, the embodiment adopts a bridge girder erection machine large column 301 to convey a bridge girder erection machine 401 and a replacement gantry crane 402, wherein the bridge girder erection machine large column 301 is a plurality of railway flat plates pulled by two locomotives, the bridge girder erection machine 401 on the bridge girder erection machine large column 301 is in a split state, namely, a host machine, a large arm, a 0# landing leg, a 1# landing leg and the like are respectively loaded on the railway flat plates for transportation, after the bridge girder erection machine large column arrives at a station K, the replacement gantry crane 402 is installed on a straight line section of a station line 103, the bridge girder erection machine 401 is quickly assembled, the bridge girder erection machine 401, the replacement gantry crane 402 and a transport Liang Dalie 201 are in the same track (see fig. 1), a locomotive flat plate positioned between the transport Liang Dalie and the bridge girder erection machine 401 is reserved on the station line 103, and the bridge girder erection machine large column 301 from which is unloaded is stopped on other idle station lines 103 for preparation (the locomotive using the bridge girder erection machine 301 as a later-stage laying power); when the replacement is needed, the transportation Liang Dalie 201 replaces the T beam transportation channel at the door hanger 402, the T beam transportation channel is replaced on a reserved mobile flat plate through the door hanger 402, and the T Liang Wei is sent to the bridge girder erection machine 401 through the mobile flat plate.
3) The construction of the lower structure of the bridge damage section M bridge is carried out while T beam transportation and bridge girder erection machine transportation are carried out, wherein the construction comprises a newly built pile foundation, a bearing platform, a pier body and a filler stone of a 0# platform, a 1# column, a 2# column and a 3# platform, wherein the pier body and the filler stone adopt C50 concrete casting and the like to have girder erection conditions in 3 days, and the problem of 28 days of adopting C25-C40 concrete and the like in common use is solved; the roadbed filling 501 at the back of the platform is filled by cement gravel stabilized soil, so that the problems of difficult compaction and post-construction settlement of conventional water seepage materials are solved, and the passing bearing capacity of the bridge girder erection machine 401 is improved; the abutment flange plates are reinforced by the vertically arranged sleepers 502, and the abutment flange plates are reinforced more quickly than conventional steel pipe columns. The bridge head 30m roadbed is reinforced by penetrating a single sleeper 503, so that the bearing capacity of the old roadbed and the newly filled cement macadam stabilized soil roadbed is improved, and the material and the workload are saved by 50% compared with the conventional opposite-penetrating sleeper.
Secondly, in order to ensure construction safety, the station line 103 where the replacement gantry crane 402 is positioned and the overhead line 601 between the bridges M should be powered off; further, the overhead line pole 602 which affects the operation of the bridge girder erection machine 401 within the range of 100m of the bridge head is removed, and the overhead line 601 wires of 100m before and after the replacement gantry crane 402 are lifted to 6.3m or more, so that the problem that the overhead line pole 602 affects the passing, girder erection and rail laying operation of the bridge girder erection machine 401 is solved.
Thirdly, girder erecting and rail laying operations are carried out.
Because the TJ165 bridge girder erection machine 401 is adopted in the embodiment, the total weight of the machine is 255t, the minimum curve radius of a normal girder erection machine is 600m, the minimum curve radius of a track-shifting girder erection piece is 300m, the maximum ascending slope is 16 per mill through the minimum curve radius of 180m, the working height is 7.36m, and the working height of a replacement gantry crane is 6.3m. Therefore, in order to solve the safety risk of multiple transverse movements of the bridge girder erection machine in the girder erection process of the limit small curve range, the curvature of a damaged section railway business line with the bridge head L in the limit state is corrected by a track shifting, and the extra-high of the curve outer strand is reduced to zero by a falling track, so that the curve sections are connected in front of and behind. The track shifting is to draw a beam-setting working condition diagram through CAD software to determine curve track shifting parameters, shift 10cm inward from the tail of the table, shift 15cm outward from the curve at 25m, and make the two ends connect smoothly (see figure 4-1), thereby realizing track shifting correction of a 300m radius limit small curve, solving the safety problem and improving beam-setting efficiency. Then, the bridge head roadbed is reinforced, namely, the bearing capacity of the old roadbed with the bridge head within the range of 30m and the newly-filled cement-crushed stone stabilized soil roadbed with the bridge head is increased by adopting a mode of penetrating a single wooden sleeper between concrete sleepers, and the workload of penetrating the wooden sleeper is saved by 50% compared with that of a conventional newly-filled roadbed. Thereafter, the bridge damaged section is bridged by the locomotive-propelled bridge girder erection machine 401 (the locomotive-propelled downhill girder erection is not required), the same Kong Liangxian is in principle bridged by the curve outside T-girder, then by the curve inside T-girder, and the transportation Liang Dalie is grouped in this order. When the beam is erected, the diaphragm plate concrete is replaced by grouting materials for pouring, so that the construction is faster, and the design strength is reached more quickly. In addition, when the last 1-hole 24m beam is erected, the beam is erected according to the working condition of 32m, so that the No. 0 supporting leg of the bridge girder erection machine 401 is ensured to bear force on a stable roadbed, and the workload and the safety risk of a reinforcing bridge abutment are reduced.
In the girder erection process, each time the erection of a hole girder is completed, the bridge girder erection machine 401 is required to be pulled back to the bridge head L through 1 locomotive in the bridge girder erection machine large column 301, the track panel 7 pre-paved on the bridge head roadbed in advance is hung, and the track panel 7 is longitudinally paved on the ballast with the thickness of 15cm on the girder surface. The track panel 7 is positioned on the roadbed between the uplink line 101 and the downlink line 102, compared with the traditional mode of assembling the track panel on the track laying base, the track panel is not required to be transported by a large railway column, the operation is convenient, and the on-site track laying workload during the track laying period is reduced. The track panel 7 is hung and grabbed by a large arm of the bridge girder erection machine 401, so that the workload of manually transversely moving the track panel 7 onto a line is reduced. The ballast on the beam surface is paved on the beam of the station K transport Liang Dalie in advance, so that the ballasting workload and the working procedure interference during track laying are reduced, and the operation safety in the extremely small space on the bridge is reduced.
Fourth, the bridge machine is quickly evacuated: the No. 0 supporting leg of the bridge girder erection machine 401 is dismantled on site, the bridge girder erection machine 401 is pulled by a locomotive to quickly return to the position of the replacement gantry crane 402 of the station K for disassembly, and in the returning process, the quick evacuation within 14 hours is ensured by carrying out temporary reinforcement of business lines; and meanwhile, the bridge deck system and four-electric equipment are quickly recovered, so that the operation of the railway business line is ensured to be recovered within 24 hours.
The (1)0 # support leg is quickly dismantled on site by adopting a crane, so that the workload of folding and running the 0# support leg and dismantling the 0# support leg by using the replacement gantry crane 402 is reduced, and the dismantling time is nearly 6 hours faster than that of a conventional dismantling method; (2) the locomotive is used for traction of the bridge girder erection machine 401 to return, the running power of the bridge girder erection machine 401 can be increased by the locomotive, and the bridge girder erection machine 401 can climb a line in a superposition state of 18 per mill of extreme large gradient and 180m of extreme small radius bifurcation inner curve, so that the problem of insufficient power of the bridge girder erection machine 401 in the extreme state is solved; (3) the temporary reinforcement is the simplest but safe reinforcement state which does not affect the speed-limiting operation of the bridge girder erection machine large column 301 and short-distance transportation to the nearest goods yard, and saves about 10 hours compared with the formal reinforcement. The method can complete the disassembly of the bridge girder erection machine within 14 hours, and solves the problem that the bridge girder erection machine needs to be disassembled in 3 days conventionally and does not meet the time requirement of quick rescue.
As shown in fig. 9, the rapid construction bridge deck refers to (1) after welding the steel plates at the diaphragm plate, in order to achieve the purpose of rapid construction, concrete is replaced by grouting material 801, so that the construction progress and strength are accelerated, the requirement of completing the construction of a longitudinal steel cover plate 802 within 2 hours is met, and conditions are provided for line forming; (2) the bridge deck walking board brackets 803 are installed by utilizing gaps in the girder erecting process, and then the construction walking board 804 is paved on the bridge deck walking board brackets as a temporary channel to ensure personnel to pass through; the quick rough-loading cable slot ensures that the optical cable is penetrated, and provides conditions for four-electric equipment and line construction within 6 hours after the final 1-hole track laying is completed; (3) the bridge deck and four electric devices have the condition of recovering the opening of the line 24 hours after the girder erection is completed.
By the method, the T beam is advanced by nearly 40 days compared with a new method, the entering installation of the bridge crane is saved by nearly 15 days, the problem of insufficient power of the bridge crane with limited gradient and small curve beam is solved, the up-and-down 12-piece beam erection and rail laying are completed in 2 days, the lower structure of the bridge has beam erecting conditions in 3 days, the speed is 25 days faster than the speed in the conventional method, the bridge crane is evacuated for 14 hours, and the problem that the bridge crane cannot be dismantled in 3 days and has opening conditions in 24 hours is solved. In summary, the invention can ensure that the rescue task of 'dismantling old bridges and simultaneously building 3-24mT Liang Xinqiao' is completed within 18 days, which is more beneficial than the traditional method that the recovery line driving can be realized only by taking 3-4 months.
The invention can realize the rapid bridge laying construction of the bridge of the business line railway in emergency, is also suitable for the rapid bridge replacement construction in the upgrading and reconstruction of the existing railway, and solves the bridge laying construction problem of the bridge girder erection machine in the state of limit gradient and curve radius caused by the limitation of the mountain area.
It should be noted that, in the description of the present invention, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Claims (9)

1. The construction method of the railway bridge girder erection machine for rapidly laying the frame in the emergency limit state of the business line is suitable for the railway business line to pass through a station, the station and the bridge damage section can normally run, and the railway business line is connected with a plurality of station lines in the station through a duplex crossing bifurcation; the damaged railway business line at the bridge damage section near the bridge head has a limit state of less than or equal to 300m limit small radius curve, or greater than or equal to 18 permillage large gradient, or superposition of the two conditions, and the emergency is that the T-beam erection and the track laying of the damaged bridge are required to be completed quickly, and the line driving is restored quickly; the method is characterized by comprising the following construction steps:
first, preparing: the prefabricated T beams of the same type or the T beams of the removed bridge are transported to a station for use by a transport Liang Dalie; conveying the bridge girder erection machine in a split state and the replacement gantry crane to a station through a bridge girder erection machine large column; the method comprises the steps of carrying out grouping on a transport Liang Dalie and a bridge girder erection machine in a station, assembling the bridge girder erection machine, installing a replacement gantry crane on a straight line section of a railway business line, turning a traction locomotive into a line and standing by, transferring the bridge girder erection machine to the line and temporarily storing the line;
meanwhile, constructing a lower structure of the bridge damaged section of the bridge, filling a roadbed at the back of the bridge and reinforcing a flange plate of the bridge abutment; pre-paving a track panel on a roadbed outside a bridge head line, wherein the length of the track panel is smaller than that of a beam;
secondly, modifying the contact net: the station track occupied by the replacement gantry crane and the overhead contact network in the bridge head range are powered off, the 100m contact network near the replacement gantry crane is lifted by at least 6.3m, and meanwhile, the contact network rod affecting the operation of the bridge girder erection machine in the 100m range of the bridge head is removed;
thirdly, paving a girder of the bridge girder erection machine: firstly, shifting and connecting a damaged limit curve railway business line at the bridge head, and/or lowering the super-high of the bridge head curve to zero through a falling road, and reinforcing a bridge head roadbed; then, a power passing limit state curve is increased through a locomotive pushing bridge girder erection machine, and girder erection is carried out on the bridge damaged section; in the girder erection process, when the erection of a hole girder is completed, a bridge girder erection machine is pulled back to the climbing limit state gradient to the bridge head through a locomotive, a track panel pre-paved on the roadbed of the bridge head in advance is hung, and the track panel is longitudinally paved on the ballast of the girder surface;
fourth, the bridge machine is quickly evacuated: after the last hole rail laying is completed, the 0# supporting leg of the bridge girder erection machine is dismantled on site, the bridge girder erection machine is pulled by a locomotive to quickly pass through a limit small curve and/or a large gradient to return to a station and to be disassembled and evacuated, and meanwhile, the bridge deck system and four electric devices are quickly recovered, so that the operation of a railway business line is ensured to be recovered within 24 hours.
2. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 1, wherein the construction method comprises the following steps: the minimum curve radius of a normal girder erection machine is 600m, the minimum curve radius of a track-shifting girder erection piece is 300m, the maximum uphill gradient is 16 per mill through the minimum curve radius of 180m, the working height is 7.36m, and the working height of a replacement gantry crane is 6.3m.
3. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 1, wherein the construction method comprises the following steps: the large train of the transporting Liang Dalie and bridging machines comprises at least one locomotive and a plurality of railway flat plates.
4. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 1, wherein the construction method comprises the following steps: the railway business line comprises an uplink line and a downlink line which are arranged in parallel; the radius of the inner curve of the compound crossing turnout is 180m, or larger than or equal to 18 per mill of large gradient, or the limit state of superposition of the two conditions.
5. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 1, wherein the construction method comprises the following steps: the construction of the lower structure of the bridge damaged section comprises newly-built pile foundations, bearing platforms, pier bodies and cushion stones, wherein the pier bodies and the cushion stones are poured by C50 concrete; the step of filling the roadbed at the back of the platform refers to filling by adopting cement broken stone stabilized soil; the bridge abutment flange plate reinforcement refers to reinforcement by adopting a wooden sleeper.
6. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 1, wherein the construction method comprises the following steps: the track lining means draws a beam-erecting working condition diagram through CAD software to determine curve track lining parameters, and then carries out track lining correction on a 300m limit small radius curve; the falling finger reduces the extra-high of the existing curve to zero; the bridge head roadbed reinforcement refers to the improvement of the bearing capacity of an old roadbed with a bridge head 30m range and a new roadbed with cement and crushed stone stabilized soil at the bridge head by penetrating a single wooden sleeper.
7. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 1, wherein the construction method comprises the following steps: when the damaged bridge is in a limit small radius curve, the frame beams are sequentially erected from outside to inside, and the diaphragm concrete is replaced by grouting materials during the frame beams.
8. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 4, which is characterized in that: the track panel is positioned on the roadbed between the uplink line and the downlink line of the bridge head, and the track panel is hung and grabbed through the large arm of the bridge girder erection machine.
9. The construction method for rapidly paving the frame of the railway bridge girder erection machine in the emergency limit state of the business line according to claim 1, wherein the construction method comprises the following steps: the quick recovery bridge deck system is characterized in that a bridge deck system bracket is installed by utilizing gaps in the girder erecting process, a wood plate is utilized to replace a concrete walking plate to be paved on temporarily so as to ensure the passing of personnel, and a cable groove is quickly and coarsely installed so as to ensure the penetration of a photoelectric cable.
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JPH09316828A (en) * 1996-05-30 1997-12-09 P S Co Ltd Method for moving election girder
CN2767494Y (en) * 2004-11-29 2006-03-29 北京万桥兴业机械有限公司 Conveying and erecting integrated bridge girder erection equipment
CN202247686U (en) * 2011-09-09 2012-05-30 中交第四公路工程局有限公司第五工程处 Bridge erecting machine for construction method for ultra-small-radius frame beam
CN102747693A (en) * 2012-07-27 2012-10-24 中铁一局集团有限公司 Railway T-beam erecting construction method based on continuous beam laying reloading points
CN106836000A (en) * 2017-04-06 2017-06-13 中铁六局集团有限公司 Curve via holes Summarized Account of Bridge Erection Construction method based on DJ series Bridge Erectors
CN110528390A (en) * 2019-08-14 2019-12-03 中铁六局集团太原铁路建设有限公司 It closes on both wired narrow spaces and sets up T beam construction method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09316828A (en) * 1996-05-30 1997-12-09 P S Co Ltd Method for moving election girder
CN2767494Y (en) * 2004-11-29 2006-03-29 北京万桥兴业机械有限公司 Conveying and erecting integrated bridge girder erection equipment
CN202247686U (en) * 2011-09-09 2012-05-30 中交第四公路工程局有限公司第五工程处 Bridge erecting machine for construction method for ultra-small-radius frame beam
CN102747693A (en) * 2012-07-27 2012-10-24 中铁一局集团有限公司 Railway T-beam erecting construction method based on continuous beam laying reloading points
CN106836000A (en) * 2017-04-06 2017-06-13 中铁六局集团有限公司 Curve via holes Summarized Account of Bridge Erection Construction method based on DJ series Bridge Erectors
CN110528390A (en) * 2019-08-14 2019-12-03 中铁六局集团太原铁路建设有限公司 It closes on both wired narrow spaces and sets up T beam construction method

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