Edge reinforcing structure for foundation pit supporting

Abstract

The edge reinforcing structure comprises a foundation pit body, a top beam is installed on the inner edge of the top of the foundation pit body, a first grouting column and a second grouting column are fixedly connected to the bottom of the top beam, a supporting beam is fixedly installed on the inner side of the top beam, and a plurality of force transmission plates are fixedly installed in the middle of the supporting beam. Two inclined supporting beams are fixedly installed on one side of each force transmission plate, one end of each inclined supporting beam is connected with the inner side of the top beam, third grouting columns are fixedly connected to the bottoms of the force transmission plates, the first grouting columns and the second grouting columns are connected and arranged in a staggered mode, and latticed columns are fixedly installed in the first grouting columns, the second grouting columns and the third grouting columns. Reliable supporting performance is provided, the collapse risk of the foundation pit is reduced, and the personal safety of constructors is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to an edge reinforcement structure for foundation pit support. Background Art

[0002] With the acceleration of urbanization, the use of high-rise buildings and underground space is increasing, and the scale and depth of foundation pit projects are also increasing. In foundation pit projects, edge reinforcement structure is one of the important measures to ensure the stability of foundation pits. After the foundation pit is excavated, the edge soil is easily displaced or collapsed by external forces, so it is necessary to improve its stability through reinforcement structure. The edge reinforcement structure can increase the bearing capacity of the foundation pit edge, prevent soil loss and collapse, and thus ensure the smooth progress of the foundation pit project.

[0003] After searching, Chinese patent CN212835430U discloses a foundation pit reinforcement and support device, including a device body, a steel baffle is provided at the rear end of the device body, a connecting base is provided on the front end outer surface of the steel baffle, an oblique bracket is provided between the upper surface of the connecting base near the front end and the front end outer surface of the steel baffle near the upper end, a No. 1 reinforcement bracket is provided between the rear end outer surface of the oblique bracket and the junction of the steel baffle and the connecting base, and a No. 2 reinforcement bracket is provided on the upper end of the No. 1 reinforcement bracket.

[0004] The above technical solution supports the steel baffle through oblique brackets, transverse brackets and fixing nails, so that the steel baffle reinforces and protects the edge of the foundation pit. Although the structure of this device is simple and easy to install, it cannot effectively withstand the lateral force exerted by the soil layer. Once the oblique brackets and the transverse brackets are deformed and broken, the foundation pit will be at risk of collapse, resulting in the personal safety of construction workers cannot be guaranteed. Utility Model Content

[0005] The purpose of the utility model is to provide an edge reinforcement structure for foundation pit support, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an edge reinforcement structure for foundation pit support, comprising a foundation pit body, a crown beam is installed on the inner edge of the top of the foundation pit body, a first grouting column and a second grouting column are fixedly connected to the bottom of the crown beam, and a support beam is fixedly installed on the inner side of the crown beam, a plurality of force transmission plates are fixedly installed in the middle of the support beam, two diagonal bracing beams are fixedly installed on one side of a plurality of the force transmission plates, one end of the diagonal bracing beam is connected to the inner side of the crown beam, and a third grouting column is fixedly connected to the bottom of the force transmission plate.

[0007] As a further preferred embodiment of the present technical solution, the first grouting column is connected to the second grouting column and is staggered, and lattice columns are fixedly installed inside the first grouting column, the second grouting column and the third grouting column.

[0008] As a further preferred embodiment of the present technical solution, the first connecting plate on the outside of the bottom of the third grouting column has one end fixedly connected to a foundation pit guard plate, the top of the foundation pit guard plate is fixedly connected to a second connecting plate, and the outer surface of the foundation pit guard plate is tightly attached to the inner wall of the foundation pit body.

[0009] As a further preferred embodiment of the present technical solution, two symmetrically arranged connecting rods are fixedly connected to the outer side of the top of the second connecting plate, and the outer side of one end of the connecting rod is threadedly connected to a reinforcing sleeve. A connecting hole is opened on the surface of one side of the diagonal bracing beam close to the reinforcing sleeve, and the solid end of the reinforcing sleeve is installed inside the connecting hole.

[0010] As a further preferred embodiment of the present technical solution, the connection between the foundation pit guard plate and the first connecting plate is fixedly connected with reinforcing ribs.

[0011] As a further preferred embodiment of the present invention, a bubble level is installed on the surface of one end of the connecting rod close to the reinforced sleeve.

[0012] As a further preferred embodiment of the present technical solution, the outer edge of the top of the foundation pit body is fixedly connected with a foundation pit fence.

[0013] The utility model provides an edge reinforcement structure for foundation pit support, which has the following beneficial effects:

[0014] (1) The utility model not only provides waterproof and soil retaining functions by setting the first grouting column and the second grouting column, but also provides reliable supporting performance, reduces the risk of foundation pit collapse, and ensures the personal safety of construction workers.

[0015] (2) The utility model reinforces the crown beam through supporting beams, force transmission plates and diagonal bracing beams, thereby improving the lateral force bearing capacity of the first grouting column and the second grouting column and strengthening the overall stability of the structure.

[0016] (3) The utility model improves the supporting performance of the diagonal bracing beam by setting the connecting rod and the reinforcing sleeve. Secondly, the bubble level can be used to observe whether the diagonal bracing beam is deformed, which helps the staff to check and predict risks in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the first grouting column of the utility model;

[0019] Figure 3 This is a schematic diagram of the foundation pit guard plate structure of the present utility model;

[0020] Figure 4 This is a schematic diagram of the connecting rod structure of the present utility model.

[0021] In the figure: 1. Foundation pit body; 2. Foundation pit fence; 3. Crown beam; 4. Support beam; 5. Force transfer plate; 6. Diagonal bracing beam; 7. First grouting column; 8. Second grouting column; 9. Lattice column; 10. Third grouting column; 11. First connecting plate; 12. Foundation pit guard plate; 13. Second connecting plate; 14. Connecting rod; 15. Reinforcement sleeve; 16. Connecting hole; 17. Bubble level. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1-Figure 4 As shown, in this embodiment, an edge reinforcement structure for foundation pit support includes a foundation pit body 1, a crown beam 3 is installed on the inner edge of the top of the foundation pit body 1, the bottom of the crown beam 3 is fixedly connected with a first grouting column 7 and a second grouting column 8, and a support beam 4 is fixedly installed on the inner side of the crown beam 3, and a plurality of force transmission plates 5 are fixedly installed in the middle of the support beam 4, and two diagonal bracing beams 6 are fixedly installed on one side of the plurality of force transmission plates 5, one end of the diagonal bracing beam 6 is connected to the inner side of the crown beam 3, and the bottom of the force transmission plate 5 is fixedly connected with a third grouting column 10. The support beam 4 and the diagonal bracing beam 6 can improve the overall force-bearing strength of the crown beam 3, so as to improve the lateral force-bearing capacity of the first grouting column 7 and the second grouting column 8, and prevent them from tilting and deforming in the foundation pit soil layer.

[0024] The first grouting column 7 is connected to the second grouting column 8 and is staggered. Compared with the traditional grouting columns arranged in a row, the staggered arrangement of the first grouting column 7 and the second grouting column 8 can improve the force-bearing capacity and structural strength. The first grouting column 7, the second grouting column 8 and the third grouting column 10 are all fixedly installed with lattice columns 9. The lattice columns 9 are used to improve the strength and rigidity of the first grouting column 7, the second grouting column 8 and the third grouting column 10. The first grouting column 7, the second grouting column 8 and the third grouting column 10 are made of concrete pouring formwork. The lattice columns 9 are placed inside the formwork before pouring concrete.

[0025] The first connecting plate 11 is located on the outside of the bottom of the third grouting column 10. One end of the first connecting plate 11 is fixedly connected to a foundation pit guard plate 12. The top of the foundation pit guard plate 12 is fixedly connected to a second connecting plate 13. The outer surface of the foundation pit guard plate 12 is tightly attached to the inner wall of the foundation pit body 1. The first connecting plate 11 is welded to the outside of the third grouting column 10. The foundation pit guard plate 12 plays a connecting role. Secondly, it can be used to support the inner wall of the foundation pit body 1 to reduce the falling of sand and stones.

[0026] Two symmetrically arranged connecting rods 14 are fixedly connected to the outer side of the top of the second connecting plate 13, and a reinforcing sleeve 15 is threadedly connected to the outer side of one end of the connecting rod 14. A connecting hole 16 is provided on the surface of one side of the reinforcing sleeve 15 close to the diagonal bracing beam 6. The solid end of the reinforcing sleeve 15 is installed inside the connecting hole 16, and the end of the reinforcing sleeve 15 away from the connecting rod 14 is a solid end. By rotating the reinforcing sleeve 15 so that it rotates along the threaded end of the connecting rod 14, the solid end of the reinforcing sleeve 15 is immersed in the connecting hole 16, so that the connecting rod 14 and the reinforcing sleeve 15 are connected to the diagonal bracing beam 6, thereby improving the supporting performance of the diagonal bracing beam 6.

[0027] The connection points between the foundation pit guard plate 12 and the first connecting plate 11 are fixedly connected with reinforcing ribs, which are used to improve the firmness of the connection between the foundation pit guard plate 12 and the first connecting plate 11.

[0028] A bubble level 17 is installed on the surface of the connecting rod 14 near one end of the reinforcing sleeve 15. When the diagonal bracing beam 6 is deformed, the reinforcing sleeve 15 will pull the connecting rod 14 to deform together. At this time, by observing the bubble level 17, it can be found whether the diagonal bracing beam 6 is deformed, and risks can be predicted in advance to ensure the safety of construction workers.

[0029] The outer edge of the top of the foundation pit body 1 is fixedly connected with a foundation pit fence 2, which is installed around the foundation pit body 1 to prevent outsiders and vehicles from accidentally falling into the interior of the foundation pit body 1.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An edge reinforcement structure for foundation pit support, comprising a foundation pit body (1), characterized in that: A crown beam (3) is installed at the inner edge of the top of the foundation pit body (1), a first grouting column (7) and a second grouting column (8) are fixedly connected to the bottom of the crown beam (3), and a support beam (4) is fixedly installed on the inner side of the crown beam (3), a plurality of force transmission plates (5) are fixedly installed in the middle of the support beam (4), two diagonal bracing beams (6) are fixedly installed on one side of the plurality of force transmission plates (5), one end of the diagonal bracing beam (6) is connected to the inner side of the crown beam (3), and the bottom of each force transmission plate (5) is fixedly connected to a third grouting column (10).

2. The edge reinforcement structure for foundation pit support according to claim 1, characterized in that: The first grouting column (7) is connected to the second grouting column (8) and is staggered. Lattice columns (9) are fixedly installed inside the first grouting column (7), the second grouting column (8) and the third grouting column (10).

3. The edge reinforcement structure for foundation pit support according to claim 1, characterized in that: A first connecting plate (11) is provided on the outer side of the bottom of the third grouting column (10); one end of the first connecting plate (11) is fixedly connected to a foundation pit guard plate (12); a top of the foundation pit guard plate (12) is fixedly connected to a second connecting plate (13); and the outer surface of the foundation pit guard plate (12) is in close contact with the inner wall of the foundation pit body (1).

4. The edge reinforcement structure for foundation pit support according to claim 3, characterized in that: Two symmetrically arranged connecting rods (14) are fixedly connected to the outer side of the top of the second connecting plate (13), and the outer side of one end of each connecting rod (14) is threadedly connected to a reinforcing sleeve (15). A connecting hole (16) is opened on the surface of one side of the diagonal bracing beam (6) close to the reinforcing sleeve (15), and the solid end of the reinforcing sleeve (15) is installed inside the connecting hole (16).

5. The edge reinforcement structure for foundation pit support according to claim 3, characterized in that: The connection between the foundation pit guard plate (12) and the first connecting plate (11) is fixedly connected with a reinforcing rib.

6. The edge reinforcement structure for foundation pit support according to claim 4, characterized in that: A bubble level (17) is mounted on the surface of one end of the connecting rod (14) close to the reinforcement sleeve (15).

7. The edge reinforcement structure for foundation pit support according to claim 1, characterized in that: The outer edge of the top of the foundation pit body (1) is fixedly connected to a foundation pit fence (2).

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