CN114703853A - Movable type string tube concrete pouring construction method for low-clearance underground structure - Google Patents
Movable type string tube concrete pouring construction method for low-clearance underground structure Download PDFInfo
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- CN114703853A CN114703853A CN202210157565.5A CN202210157565A CN114703853A CN 114703853 A CN114703853 A CN 114703853A CN 202210157565 A CN202210157565 A CN 202210157565A CN 114703853 A CN114703853 A CN 114703853A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
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- General Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a mobile string tube concrete pouring construction method of a low-clearance underground structure, which comprises the following steps: providing a string tube component (1) and a pouring hose (2), wherein the upper end of the string tube component is positioned at the top of the low-clearance underground structure, the lower end of the string tube component is connected with the upper end of the pouring hose, and the lower end of the pouring hose extends to a pouring position; providing a gantry crane (3), so that the string drum assembly is hooked on a main hook (31) of the gantry crane and moves through the gantry crane; providing a chute (4), wherein the chute is movably arranged between a road (8) and a foundation pit of a low-clearance underground structure, and the chute is obliquely arranged so that the lower end of the chute extends to an opening at the top of the tail of the stringing barrel; and providing a pump truck (5), wherein a discharge hole of the pump truck is positioned at the upper end of the chute, and the pump truck runs on a road and synchronously moves with the cylinder stringing component and the chute. The invention can meet the concrete pouring requirement of the low-clearance underground structure with limited high requirement, and improves the efficiency of pouring operation on the basis of ensuring the pouring quality.
Description
Technical Field
The invention relates to a building construction method, in particular to a movable type string tube concrete pouring construction method of a low-clearance underground structure.
Background
With the development of underground spaces, underground structural concrete construction often involves concrete pouring in narrow spaces with limited height requirements, such as height-limiting construction under high-voltage lines. The traditional concrete pouring method is generally to pour by adopting an automobile pump, has the advantages of high pouring speed, wide pouring range, high moving speed and the like, can realize quick conversion in the pouring process, but cannot work in narrow and limited high-requirement spaces. In this case, the concrete pouring operation can only be performed by using the ground pump, the ground pump pouring can meet the height limit requirement below a high-voltage line and the like, but the pouring speed is slow, and in the case of the change of the pouring position, the pipe connection and the pipe disassembly are required, so that the operation is complex, the working efficiency is low, and the method is not suitable for the concrete pouring operation with small volume; meanwhile, for the wall bodies such as side walls and intermediate walls which are constructed by layered pouring, the time interval of layered pouring is longer, cold joints are easily caused, and the construction quality is influenced.
Disclosure of Invention
The invention aims to provide a mobile string tube concrete pouring construction method of a low-clearance underground structure, which can meet the concrete pouring requirement of the low-clearance underground structure with limited high requirement and improve the efficiency of pouring operation on the basis of ensuring the pouring quality.
The invention is realized by the following steps:
a movable type string tube concrete pouring construction method of a low-clearance underground structure comprises the following steps:
providing a string tube assembly and a pouring hose, wherein the upper end of the string tube assembly is positioned at the top of the low-clearance underground structure, the lower end of the string tube assembly is connected with the upper end of the pouring hose, and the lower end of the pouring hose extends downwards to the pouring position of the low-clearance underground structure;
providing a gantry crane, so that the string drum assembly is hooked on a main hook of the gantry crane, and the string drum assembly can move through the gantry crane;
providing a chute, wherein the chute is movably arranged between a road and a foundation pit of a low-clearance underground structure, and the chute is obliquely arranged so that the lower end of the chute extends to an opening at the top of the tail of the stringing barrel;
the pump truck is provided, a discharge hole of the pump truck is located at the upper end of the chute, and the pump truck runs on a road and can move synchronously with the cylinder stringing component and the chute.
The string barrel assembly comprises a string barrel head, a string barrel body and a string barrel tail, the string barrel tail is connected to the upper end of the string barrel body and serves as a concrete slurry inlet of the string barrel assembly, the upper end of the string barrel head is connected to the lower end of the string barrel body and serves as a concrete slurry outlet of the string barrel assembly, and the lower end of the string barrel head is connected with the pouring hose.
The stringing barrel head is of a funnel-shaped structure with a wide upper part and a narrow lower part.
The string barrel body is formed by sequentially connecting a plurality of sections of unit string barrel bodies in series, each section of unit string barrel body is of a cylindrical structure with a wide upper part and a narrow lower part, the upper part and the lower part of the outer wall of each section of unit string barrel body are respectively provided with a connecting ring, and two adjacent sections of unit string barrel bodies are connected through the connecting rings through connecting chains.
The upper portion of cluster section of thick bamboo tail be narrow-down wide hourglass hopper-shaped structure, the lower part of cluster section of thick bamboo tail is cylindrical structure, and the bottom diameter of cluster section of thick bamboo tail is less than the top diameter of cluster barrel, makes the lower extreme of cluster section of thick bamboo tail insert to in the cluster barrel.
The top of the pouring hose is provided with an annular fastener, and the pouring hose is fastened at the bottom of the string barrel assembly through the annular fastener.
The gantry crane further comprises an auxiliary hook, the lower end of the string drum assembly can be hung on the auxiliary hook, and the auxiliary hook and the main hook enable the string drum assembly to be hung in an arc-shaped structure.
The gantry crane further comprises a crossing hook, the lower end of the pouring hose can be hung on the crossing hook, when the concrete is poured into a barrier, the string drum assembly and the pouring hose are hung above the barrier in an arc-shaped structure through the crossing hook and the main hook, and the crossing barrier is moved through the gantry crane.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can extend into a low clearance underground structure due to the provision of the string tube assembly and the pouring hose, meets the low clearance concrete pouring requirement of limited high requirements under a high-voltage line and the like, avoids the operations of pipe connection, pipe dismantling and the like of ground pump pouring through the flexible and convenient movement of the gantry crane, is particularly suitable for the concrete pouring construction of the side wall and the partition wall of the ultra-low clearance subway station under the high-voltage line, can realize layered sectional pouring without cold seams, and ensures the quality of pouring construction.
2. The invention provides the tandem barrel assembly and the pouring hose, which can move and bend under the control of the gantry crane, thereby satisfying the concrete pouring at different positions, and can also be lifted to the position above the barrier when encountering the barrier, thereby moving over the barrier, ensuring the continuity of the pouring operation, reducing the construction difficulty, improving the pouring efficiency and ensuring the quality of the pouring construction.
3. The invention provides the pump truck and the chute, so that concrete slurry can be directly provided by the pump truck when the passing condition of the pump truck is allowed, the continuity and the high efficiency of concrete pouring are ensured, and the chute is obliquely erected between a road and a foundation pit of a low-clearance underground structure for guiding the concrete slurry when the passing condition of the pump truck is not allowed, so that the continuous supply of the concrete slurry is ensured.
Drawings
FIG. 1 is a construction schematic diagram of a mobile string drum concrete pouring construction method of a low-clearance underground structure according to the invention;
FIG. 2 is an exploded view of a string drum assembly in the mobile string drum concrete pouring construction method of the low-clearance underground structure according to the present invention;
FIG. 3 is a schematic view illustrating the use of an auxiliary hook in the mobile string drum concrete pouring construction method of the low clearance underground structure according to the present invention;
fig. 4 is a schematic view illustrating the use of a crossing hanger in the mobile string drum concrete casting construction method of the low-clearance underground structure of the present invention.
In the figure, 1 string barrel component, 11 string barrel head, 12 string barrel body, 13 string barrel tail, 2 pouring hose, 3 crane, 31 main hook, 32 auxiliary hook, 33 spanning hook, 4 chute, 5 pump truck, 6 ground wall, 7 obstacle and 8 road.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to the attached figure 1, the mobile type string barrel concrete pouring construction method of the low-clearance underground structure comprises the following steps:
providing a string tube component 1 and a pouring hose 2, wherein the upper end of the string tube component 1 is positioned at the top of the low-clearance underground structure, the lower end of the string tube component 1 is connected with the upper end of the pouring hose 2, and the lower end of the pouring hose 2 extends downwards to a pouring position of the low-clearance underground structure. The arrangement position of the string tube assembly 1 can be adjusted according to the actual construction condition, and preferably, the upper end of the string tube assembly 1 is positioned on the inner side of the top of the ground wall 6.
Referring to fig. 2, the string tube assembly 1 includes a string tube head 11, a string tube body 12 and a string tube tail 13, the string tube tail 13 is connected to the upper end of the string tube body 12 to serve as a concrete slurry inlet of the string tube assembly 1, the upper end of the string tube head 11 is connected to the lower end of the string tube body 12 to serve as a concrete slurry outlet of the string tube assembly 1, and the lower end of the string tube head 11 is connected to the pouring hose 2.
The string tube head 11 is of a funnel-shaped structure with a wide upper part and a narrow lower part, so that concrete slurry can be poured into the pouring hose 2 conveniently from the string tube head 11.
Preferably, the diameter of the upper end of the stringing cylinder head 11 is 600mm, and the diameter of the lower end of the stringing cylinder head 11 is 150 mm.
The string barrel 12 is formed by sequentially connecting a plurality of sections of unit string barrels in series, each section of unit string barrel is of a cylindrical structure with a wide upper part and a narrow lower part, the upper part and the lower part of the outer wall of each section of unit string barrel are respectively provided with a connecting ring (not shown in the figure), and two adjacent sections of unit string barrels are connected through the connecting rings through connecting chains (not shown in the figure). The length of the string barrel body 12 can be adjusted according to actual construction requirements, the assembly and disassembly are convenient, the length adjustment is flexible, and a bending function of a certain degree is realized among all the unit string barrel bodies of the string barrel body 12 so as to meet the change of pouring positions.
Preferably, the diameter of the top of the unit string barrel body is 350mm, the diameter of the bottom of the unit string barrel body is 250mm, the height of the unit string barrel body is 1000mm, the connecting ring can adopt an iron ring with the diameter of 200mm, the connecting chain can adopt an iron chain, and the iron chain penetrates through the connecting ring at the lower part of the last unit string barrel body and the connecting ring at the upper part of the next unit string barrel body to form a closed loop structure, so that the two unit string barrel bodies are connected in series.
The upper portion of string section of thick bamboo tail 13 be narrow down wide funnel-shaped structure, the lower part of string section of thick bamboo tail 13 is cylindrical structure, and the bottom diameter of string section of thick bamboo tail 13 is less than the top diameter of string section of thick bamboo body 12, make the lower extreme of string section of thick bamboo tail 13 insert to string section of thick bamboo body 12 in, the entering of concrete slurry of being convenient for.
Preferably, the diameter of the top of the string drum tail 13 is 300mm, the diameter of the bottom of the string drum tail 13 is 150mm, and the height of the funnel-shaped structure of the string drum tail 13 is 400 mm.
Pour the top of hose 2 and be equipped with annular fastener, pour hose 2 through the bottom of annular fastener lock joint at string section of thick bamboo head 11 of string section of thick bamboo subassembly 1, prevent to pour hose 2 and drop.
The length of the pouring hose 2 can be adjusted according to the height difference between the feeding position and the pouring position, preferably, the length of the pouring hose 2 is 6m, so that concrete slurry smoothly flows to the pouring position along the pouring hose 2.
Providing a gantry crane 3, so that the string drum assembly 1 is hooked on a main hook 31 of the gantry crane 3, and the string drum assembly 1 can move through the gantry crane 3.
The chute 4 is provided, the chute 4 is movably arranged between the road 8 and a foundation pit of a low-clearance underground structure, and the chute 4 is obliquely arranged, so that the lower end of the chute 4 extends to the top opening of the barrel stringing tail 13.
Preferably, the chute 4 can be hoisted by the gantry crane 3 and obliquely erected by the temporary support, so that the concrete in the chute 4 can smoothly flow, and the chute 4 and the string drum assembly 1 can synchronously move.
And providing a pump truck 5, wherein a discharge hole of the pump truck 5 is positioned at the upper end of the chute 4, and the pump truck 5 runs on a road and can synchronously move with the cylinder stringing component 1 and the chute 4.
The length of the chute 4 can be adjusted according to the distance between the pump truck 5 and the tandem assembly 1, and the chute is not allowed to be arranged between the pump truck 5 and the tandem assembly 1 under the passing condition of the pump truck 5. If the passing condition of the pump truck 5 allows, the chute 4 can be omitted, and the pump truck 5 directly pours the concrete slurry into the string barrel assembly 1.
Referring to fig. 3, the gantry crane 3 further includes an auxiliary hook 32, the lower end of the string drum assembly 1 can be hung on the auxiliary hook 32, and the auxiliary hook 32 and the main hook 31 enable the string drum assembly 1 to be hung in an arc-shaped structure, so as to meet concrete pouring requirements at different positions in the horizontal direction.
Referring to fig. 4, the gantry crane 3 further includes a crossing hook 33, the lower end of the pouring hose 2 can be hung on the crossing hook 33, when the concrete encounters the obstacle 7 in the concrete pouring process, the string drum assembly 1 and the pouring hose 2 are hung above the obstacle 7 in an arc-shaped structure through the crossing hook 33 and the main hook 31, and the crossing obstacle 7 is moved by the gantry crane 3, so that the influence of the obstacle 7 on the pouring operation is avoided, the continuity of the concrete pouring is ensured, and the pouring quality is improved.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A movable string-tube concrete pouring construction method of a low-clearance underground structure is characterized by comprising the following steps: the method comprises the following steps:
providing a string tube assembly (1) and a pouring hose (2), wherein the upper end of the string tube assembly (1) is positioned at the top of the low-clearance underground structure, the lower end of the string tube assembly (1) is connected with the upper end of the pouring hose (2), and the lower end of the pouring hose (2) extends downwards to the pouring position of the low-clearance underground structure;
providing a gantry crane (3), so that the tandem drum assembly (1) is hooked on a main hook (31) of the gantry crane (3), and the tandem drum assembly (1) can move through the gantry crane (3);
providing a chute (4), wherein the chute (4) is movably arranged between a road (8) and a foundation pit of a low-clearance underground structure, and the chute (4) is obliquely arranged to enable the lower end of the chute (4) to extend to an opening at the top of a stringing barrel tail (13);
the pump truck (5) is provided, a discharge hole of the pump truck (5) is positioned at the upper end of the chute (4), and the pump truck (5) runs on a road and can synchronously move with the cylinder stringing component (1) and the chute (4).
2. The mobile type concrete pouring construction method of the low-clearance underground structure of claim 1, which is characterized in that: the string section of thick bamboo subassembly (1) including string section of thick bamboo head (11), string barrel casing (12) and string section of thick bamboo tail (13), string section of thick bamboo tail (13) are connected and are imported as the concrete thick liquids of string section of thick bamboo subassembly (1) in the upper end of string barrel casing (12), the concrete thick liquids export of the lower extreme as string barrel casing subassembly (1) of string barrel casing (12) is connected to the upper end of string section of thick bamboo head (11), the lower extreme of string section of thick bamboo head (11) is connected with pouring hose (2).
3. The mobile type concrete pouring construction method of the low-clearance underground structure of claim 2, which is characterized in that: the stringing barrel head (11) is of a funnel-shaped structure with a wide upper part and a narrow lower part.
4. The mobile type concrete pouring construction method of the low-clearance underground structure of claim 2, which is characterized in that: the string barrel body (12) is formed by sequentially connecting a plurality of sections of unit string barrel bodies in series, each section of unit string barrel body is of a cylindrical structure with a wide upper part and a narrow lower part, the upper part and the lower part of the outer wall of each section of unit string barrel body are respectively provided with a connecting ring, and two adjacent sections of unit string barrel bodies are connected through the connecting rings through connecting chains.
5. The mobile type concrete pouring construction method of the low-clearance underground structure of claim 2, which is characterized in that: the upper portion of cluster section of thick bamboo tail (13) be narrow-down wide funnel-shaped structure, the lower part of cluster section of thick bamboo tail (13) is cylindrical structure, and the bottom diameter of cluster section of thick bamboo tail (13) is less than the top diameter of cluster barrel body (12), makes the lower extreme of cluster section of thick bamboo tail (13) insert to cluster barrel body (12) in.
6. The mobile type concrete pouring construction method of the low-clearance underground structure of claim 1, which is characterized in that: the top of the pouring hose (2) is provided with an annular fastener, and the pouring hose (2) is fastened at the bottom of the string barrel assembly (1) through the annular fastener.
7. The mobile type concrete pouring construction method of the low-clearance underground structure of claim 1, which is characterized in that: the gantry crane (3) further comprises an auxiliary hook (32), the lower end of the string drum assembly (1) can be hung on the auxiliary hook (32), and the auxiliary hook (32) and the main hook (31) enable the string drum assembly (1) to be hung in an arc-shaped structure.
8. The mobile type concrete pouring construction method of the low-clearance underground structure of claim 1, which is characterized in that: the gantry crane (3) further comprises a crossing hook (33), the lower end of the pouring hose (2) can be hung on the crossing hook (33), when the concrete meets an obstacle (7) in the concrete pouring process, the string tube assembly (1) and the pouring hose (2) are hung above the obstacle (7) in an arc-shaped structure through the crossing hook (33) and the main hook (31), and the crossing obstacle (7) is moved through the gantry crane (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157565.5A CN114703853A (en) | 2022-02-21 | 2022-02-21 | Movable type string tube concrete pouring construction method for low-clearance underground structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157565.5A CN114703853A (en) | 2022-02-21 | 2022-02-21 | Movable type string tube concrete pouring construction method for low-clearance underground structure |
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| CN114703853A true CN114703853A (en) | 2022-07-05 |
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| CN202210157565.5A Pending CN114703853A (en) | 2022-02-21 | 2022-02-21 | Movable type string tube concrete pouring construction method for low-clearance underground structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013032637A (en) * | 2011-08-01 | 2013-02-14 | Muramoto Corp | Concrete casting method |
| CN110761562A (en) * | 2019-09-24 | 2020-02-07 | 上海宝冶冶金工程有限公司 | Auxiliary tool for pouring concrete and using method |
| CN213296424U (en) * | 2020-08-20 | 2021-05-28 | 中国水利水电第五工程局有限公司 | Reverse construction method wall of a well concrete device of putting in storage |
| CN213898162U (en) * | 2020-10-30 | 2021-08-06 | 中铁三局集团有限公司 | Movable chute for concrete pouring of hidden culvert |
| CN113529724A (en) * | 2021-08-27 | 2021-10-22 | 中交二航局第四工程有限公司 | Foundation pit concrete pouring construction method |
| CN215332834U (en) * | 2021-04-30 | 2021-12-28 | 中国水利水电第十四工程局有限公司 | Hopper for pouring reverse well wall |
| CN114032957A (en) * | 2021-12-09 | 2022-02-11 | 中国二十冶集团有限公司 | Method for pouring comprehensive pipe gallery in limited space of urban dense area |
-
2022
- 2022-02-21 CN CN202210157565.5A patent/CN114703853A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013032637A (en) * | 2011-08-01 | 2013-02-14 | Muramoto Corp | Concrete casting method |
| CN110761562A (en) * | 2019-09-24 | 2020-02-07 | 上海宝冶冶金工程有限公司 | Auxiliary tool for pouring concrete and using method |
| CN213296424U (en) * | 2020-08-20 | 2021-05-28 | 中国水利水电第五工程局有限公司 | Reverse construction method wall of a well concrete device of putting in storage |
| CN213898162U (en) * | 2020-10-30 | 2021-08-06 | 中铁三局集团有限公司 | Movable chute for concrete pouring of hidden culvert |
| CN215332834U (en) * | 2021-04-30 | 2021-12-28 | 中国水利水电第十四工程局有限公司 | Hopper for pouring reverse well wall |
| CN113529724A (en) * | 2021-08-27 | 2021-10-22 | 中交二航局第四工程有限公司 | Foundation pit concrete pouring construction method |
| CN114032957A (en) * | 2021-12-09 | 2022-02-11 | 中国二十冶集团有限公司 | Method for pouring comprehensive pipe gallery in limited space of urban dense area |
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