CN221681885U - Detachable prefabricated retaining wall structure of subway open cut station - Google Patents
Detachable prefabricated retaining wall structure of subway open cut station Download PDFInfo
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- CN221681885U CN221681885U CN202420148218.0U CN202420148218U CN221681885U CN 221681885 U CN221681885 U CN 221681885U CN 202420148218 U CN202420148218 U CN 202420148218U CN 221681885 U CN221681885 U CN 221681885U
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- prefabricated retaining
- retaining wall
- prefabricated
- plug
- open cut
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- 239000000463 material Substances 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 238000009415 formwork Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model relates to the technical field of subway construction retaining walls, in particular to a detachable prefabricated retaining wall structure of a subway open cut station. The prefabricated retaining wall comprises a crown beam, a plurality of prefabricated retaining walls are sequentially connected and arranged in reserved grooves at the top of the crown beam, and the prefabricated retaining walls are connected with the crown beam through grouting materials. The prefabricated mode is adopted for on-site splicing, construction is convenient and fast, construction efficiency is improved, construction period is saved, labor force is saved, and construction cost is reduced.
Description
Technical Field
The utility model relates to the technical field of subway construction retaining walls, in particular to a detachable prefabricated retaining wall structure of a subway open cut station.
Background
The underground open cut method is an underground engineering construction method that firstly, the ground is excavated, the lining is built under the open air condition, and then the backfill is covered. The open cut method is the most basic and most commonly used construction method in the construction of soft soil underground engineering.
The top of the supporting structure of the subway open cut station is generally provided with a crown beam, and the purpose of arranging a concrete retaining wall at the top of the crown beam is as follows: firstly, bearing lateral pressure generated by water and soil pressure and load on two sides of a foundation pit, and preventing the top edge of the foundation pit from collapsing; secondly, the surface water and soil are prevented from flowing into the foundation pit, and the construction safety of the foundation pit is ensured.
The on-site formwork is required during the construction of the cast-in-place concrete retaining wall, and aiming at the characteristic of larger plane size of the subway foundation pit, the required amount of the formwork is large, the cost of the formwork renting and the formwork installing is huge, and the construction cost is directly increased; meanwhile, as the concrete of the cast-in-place concrete retaining wall is cast in situ, the construction period of the long-distance concrete retaining wall is long.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art, and provides a detachable prefabricated retaining wall structure of a subway open cut station, which is spliced on site in a prefabricated mode, is convenient to construct, improves the construction efficiency, saves the construction period, saves the labor force and reduces the construction cost.
The technical scheme of the utility model is as follows: the utility model provides a prefabricated retaining wall structure can be dismantled to subway open cut station, includes prefabricated retaining wall, wherein, still includes the crown roof beam, and several prefabricated retaining wall connects gradually and sets up in the reservation recess at crown roof beam top, pours through the grout material between prefabricated retaining wall and the crown roof beam and is connected.
In the utility model, the top of the crown beam is provided with the reserved grooves along the length direction, a plurality of prefabricated retaining walls are arranged in the reserved grooves, the width of each reserved groove is larger than the thickness of each prefabricated retaining wall, a gap exists between the inner wall of each reserved groove and the outer wall of the adjacent prefabricated retaining wall, and grouting material is poured in the gap.
And an antifriction film is arranged at the interface of the grouting material and the prefabricated retaining wall.
A I-type receiving plug is arranged at one side surface of the prefabricated retaining wall along the height direction, a II-type receiving plug is arranged at the other side surface of the corresponding prefabricated retaining wall along the height direction, and the I-type receiving plug and the II-type receiving plug are correspondingly arranged;
The I-type bearing plug at one side of the prefabricated retaining wall is connected with the II-type bearing plug at one side of the adjacent prefabricated retaining wall, so that the splicing between the two adjacent prefabricated retaining walls is realized.
The I-type bearing plug is a plug pin, the corresponding II-type bearing plug is a plug pin, and the plug pin is inserted into the plug pin to realize connection of two adjacent prefabricated retaining walls.
And (3) filling non-shrinkage cement paste into the gaps between two adjacent prefabricated retaining walls, so that a longitudinal retaining wall whole is formed between all prefabricated retaining walls at the top of the crown beam.
Two hoisting embedded parts are respectively arranged at the top and the bottom of the prefabricated retaining wall;
the hoisting embedded parts are symmetrically arranged.
The beneficial effects of the utility model are as follows:
(1) The retaining wall is spliced on site in a prefabricating mode, and the retaining wall is prefabricated in blocks and spliced after being transported to the site, so that the retaining wall is convenient to construct, the production efficiency is improved, the retaining wall is economical and environment-friendly, the construction period is saved, and the labor force is saved, therefore, the retaining wall structure can be widely used for foundation pit engineering;
(2) The precast retaining wall and the crown beam are connected through grouting materials, and adjacent precast retaining walls are also connected through slurry materials, so that the whole retaining wall structure forms a casting whole, and the quality of the whole retaining wall structure can be guaranteed.
Drawings
FIG. 1 is a schematic top view of the present utility model;
FIG. 2 is a schematic view of the cross-sectional structure of the A-A direction of FIG. 1;
FIG. 3 is a schematic view of a connection structure of two adjacent prefabricated retaining walls;
FIG. 4 is a schematic view of a partial structure of a junction of two adjacent prefabricated retaining walls;
FIG. 5 is a schematic view of a construction of a prefabricated retaining wall with a lifting embedment;
Fig. 6 is a schematic structural view of the hoisting embedment.
In the figure: 1, prefabricating a retaining wall; 2, crown beams; 3, reserving a groove; 4, a plastic antifriction film; type 5I receiving plug; type 6 II receiving plug; 7, non-shrinkage cement paste; 8, hoisting the embedded part; 9 bolts; 10, reserving reinforcing steel bars.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings.
In the following description, specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the detachable prefabricated retaining wall structure of the open cut subway station comprises a crown beam 2 arranged on the pile top and a prefabricated retaining wall 1 arranged on the crown beam 2. The bottom of the crown beam 2 is fixedly connected with the top of the fender post, and the top surface of the crown beam 2 is connected with the prefabricated retaining wall 1. Along the length direction at the top of the crown beam 2, a plurality of prefabricated retaining walls 1 are arranged, and the prefabricated retaining walls 1 are spliced in sequence along the length direction of the crown beam 2.
As shown in fig. 2, the top surface of the crown beam 2 is provided with a preformed groove 3 along the length direction thereof, and the preformed retaining wall 1 is disposed in the preformed groove 3. The width of the preformed groove 3 is greater than the thickness of the preformed retaining wall 1, so that when the preformed retaining wall 1 is placed in the preformed groove 3, a gap exists between the outer wall of the preformed retaining wall 1 and the inner wall of the preformed groove 3. And CGM grouting material is poured into the gap, so that the fixed connection between the prefabricated retaining wall 1 and the crown beam 2 is realized, the prefabricated retaining wall 1 and the crown beam 2 are connected into a whole, and the integrity of the fabricated retaining wall structure and the strength of the connecting node between the prefabricated retaining wall 1 and the crown beam 2 are improved.
The plastic antifriction film 4 is arranged at the interface of the prefabricated retaining wall 1 and the CGM grouting material, and the friction between the prefabricated retaining wall 1 and the grouting material can be properly reduced by arranging the plastic antifriction film 4, so that the prefabricated retaining wall 1 is pulled out of the CGM grouting material in the later construction period, and the prefabricated retaining wall can be reused.
As shown in fig. 3 and 4, a type i receiving plug 5 is disposed at one side of the prefabricated retaining wall 1 along the height direction, a type ii receiving plug 6 is disposed at the other side of the prefabricated retaining wall 1 along the height direction, and the type i receiving plug 5 and the type ii receiving plug 6 are disposed correspondingly. When two adjacent prefabricated retaining walls 1 are spliced, the I-type bearing plug 5 at the side edge of the prefabricated retaining wall 1 is inserted into the II-type bearing plug 6 at the side edge of the adjacent prefabricated retaining wall 1, so that the connection between the two adjacent prefabricated retaining walls is realized.
In this embodiment, a plug pin structure may be adopted between the type i receiving plug 5 and the type ii receiving plug 6. That is, the I-type receiving plug 5 is a plug, the II-type receiving plug 6 is a plug, and after the plug is inserted into the plug, connection of two adjacent prefabricated retaining walls can be realized.
And the non-shrinkage cement slurry 7 is poured into the joint hole at the joint of the two adjacent prefabricated retaining walls, and the longitudinal whole is formed between the two adjacent prefabricated retaining walls through the non-shrinkage cement slurry 5. In the application, the shrinkage-free cement slurry 7 is poured into the joint holes between all the adjacent prefabricated retaining walls, so that all the prefabricated retaining walls on the crown beam form a total retaining wall whole, the waterproof performance of the retaining wall structure can be improved, and the assembly precision can be improved.
As shown in fig. 5, two hoisting embedded parts 8 are respectively arranged at the top and the bottom of the prefabricated retaining wall 1, and the hoisting in the connecting process of the prefabricated retaining wall 1 and the crown beam 2 is conveniently realized through the hoisting embedded parts 8. In this embodiment, in order to improve the stability of the prefabricated retaining wall 1in the hoisting process, the two hoisting embedded parts 8 at the top are symmetrically arranged, and the hoisting embedded parts 8 at the top and the bottom are symmetrically arranged.
As shown in fig. 6, the hoist-embedded part 8 includes a bolt 9 at the top and a reserved reinforcing bar 10 at the lower part, and the hoist-embedded part 8 can hoist the prefabricated retaining wall. Because the hoisting embedded part 8 adopts the existing embedded part structure, the structure of the hoisting embedded part is not repeated.
The construction method of the retaining wall structure is as follows:
First, prefabricated retaining walls 1 are prefabricated in blocks in a factory. An I-shaped socket joint 5 is arranged at one side edge of the prefabricated retaining wall 1 in the height direction, an II-shaped socket joint 6 is correspondingly arranged at the other side edge of the prefabricated retaining wall in the height direction, and pre-buried lifting devices 8 are respectively arranged at the top and the bottom of the prefabricated retaining wall.
And secondly, realizing construction of the crown beam 2, arranging a reserved groove 3 at the top of the crown beam 2, and installing a surface antifriction film 4 in the reserved groove 3.
And thirdly, hoisting the prefabricated retaining wall 1, enabling the outer side surface of the prefabricated retaining wall 1 to face the outside of the foundation pit, and inserting the bottom of the prefabricated retaining wall 1 into the reserved groove 3 at the top of the crown beam.
And fourthly, pouring CGM grouting material into the gap between the prefabricated retaining wall 1 and the reserved groove 3.
And fifthly, installing the rest prefabricated retaining wall 1 in blocks by adopting the third step and the fourth step, and completing the construction of the retaining wall.
In the process of installing the prefabricated retaining wall, the I-shaped socket joint 5 on the prefabricated retaining wall which is constructed later is inserted into the II-shaped socket joint 6 on the prefabricated retaining wall which is constructed earlier, and non-shrinkage cement slurry 5 is poured into the joint gap of two adjacent prefabricated retaining walls, so that all the prefabricated retaining walls are made into a longitudinal whole.
The detachable prefabricated retaining wall for the subway open cut station provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The detachable prefabricated retaining wall structure of the subway open cut station comprises prefabricated retaining walls and a crown beam, and is characterized by further comprising a plurality of prefabricated retaining walls which are sequentially connected and arranged in reserved grooves at the top of the crown beam, wherein the prefabricated retaining walls are connected with the crown beam through grouting materials;
A I-type receiving plug is arranged at one side surface of the prefabricated retaining wall along the height direction, a II-type receiving plug is arranged at the other side surface of the corresponding prefabricated retaining wall along the height direction, and the I-type receiving plug and the II-type receiving plug are correspondingly arranged;
The I-type receiving plug at one side of the prefabricated retaining wall is connected with the II-type receiving plug at one side of the adjacent prefabricated retaining wall, so that the splicing between the two adjacent prefabricated retaining walls is realized;
and an antifriction film is arranged at the interface of the grouting material and the prefabricated retaining wall.
2. The detachable prefabricated retaining wall structure for the open cut subway station according to claim 1, wherein,
The top of crown roof beam just is equipped with the reservation recess along its length direction, is equipped with several prefabricated retaining wall in the reservation recess, and the width of reservation recess is greater than the thickness of prefabricated retaining wall, has the clearance between the inner wall of reservation recess and the outer wall of adjacent prefabricated retaining wall, has pour grouting material in this clearance.
3. The detachable prefabricated retaining wall structure for the open cut subway station according to claim 1, wherein,
The I-type bearing plug is a plug pin, the corresponding II-type bearing plug is a plug pin, and the plug pin is inserted into the plug pin to realize connection of two adjacent prefabricated retaining walls.
4. The detachable prefabricated retaining wall structure for the open cut subway station according to claim 1, wherein,
And (3) filling non-shrinkage cement paste into the gaps between two adjacent prefabricated retaining walls, so that a longitudinal retaining wall whole is formed between all prefabricated retaining walls at the top of the crown beam.
5. The detachable prefabricated retaining wall structure for the open cut subway station according to claim 1, wherein,
Two hoisting embedded parts are respectively arranged at the top and the bottom of the prefabricated retaining wall;
the hoisting embedded parts are symmetrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420148218.0U CN221681885U (en) | 2024-01-22 | 2024-01-22 | Detachable prefabricated retaining wall structure of subway open cut station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420148218.0U CN221681885U (en) | 2024-01-22 | 2024-01-22 | Detachable prefabricated retaining wall structure of subway open cut station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221681885U true CN221681885U (en) | 2024-09-10 |
Family
ID=92627717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420148218.0U Active CN221681885U (en) | 2024-01-22 | 2024-01-22 | Detachable prefabricated retaining wall structure of subway open cut station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221681885U (en) |
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2024
- 2024-01-22 CN CN202420148218.0U patent/CN221681885U/en active Active
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