Supporting structure for foundation pit excavation

Abstract

The utility model provides a supporting structure for excavation of a foundation pit, and relates to the technical field of supporting structures, the supporting structure comprises a supporting frame arranged close to the wall of the foundation pit, the supporting frame is composed of a lower supporting seat, a supporting main body and an upper supporting seat, and the supporting main body is arranged between the lower supporting seat and the upper supporting seat; inserting rods are arranged at the positions, close to the corners, of the bottom of the lower supporting base. Based on a supporting structure in the prior art, the designed supporting structure provides supporting stable fulcrums for supporting in the prior art, an inserting rod is designed at the bottom of a lower supporting base and is stably inserted into the ground, stand columns and supports are arranged in a staggered mode, connecting rods are added to serve as the fulcrums, and the stand columns (or inclined struts can abut against and be installed on the parts) are arranged. And the connection design and other modes of the upper supporting seat are matched with the supporting structure on the side wall of the same side for matched connection, pressure is conducted and dispersed, then the supporting stability is guaranteed, and the problem that the supporting column inclines and collapses due to insufficient supporting force of the supporting point is solved.

Description

Technical Field

[0001] This utility model relates to the field of support structure technology, and in particular to a support structure for foundation pit excavation. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plane dimensions. It is mainly used for the construction of pile caps, bridge abutments and spread foundations, and is an important part of building engineering.

[0003] During the excavation of the foundation pit, a support structure is required to support the side walls of the pit. Currently, the support structure used (such as...) Figure 3 The support structure (as shown) consists of a support plate, a column (or diagonal brace), and a fulcrum. The support plate abuts against the side wall of the pit, and the column is installed between the support plate and the fulcrum, thus supporting the side wall of the pit and preventing it from collapsing. However, the current support structure generally uses the soil surface as the fulcrum and the column is supported on the ground. Insufficient support force at the fulcrum can easily cause the column to tilt and collapse, and the overall support stability is also poor. Therefore, we propose a support structure for pit excavation. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies. Currently, the support points of support structures are generally soil foundations, with the columns supported on the ground. Insufficient support force at the support points can easily cause the columns to tilt and collapse, and the overall support stability is also poor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A support structure for foundation pit excavation includes a support frame disposed near the foundation pit wall. The support frame consists of a lower support base, a support body, and an upper support base, wherein the support body is disposed between the lower support base and the upper support base.

[0007] The bottom of each lower support base is equipped with a plug near the corner;

[0008] The main support consists of four columns and a bracket arranged in an alternating pattern on the same side. The bracket has two sets of connecting rods arranged horizontally between the more distant columns.

[0009] Both sides of the upper support are provided with docking grooves, and a docking crossbar is slidably connected in the docking groove on one side.

[0010] Furthermore, both the lower support and the upper support are rectangular brackets composed of two crossbeams and two connecting frames, and the two ends of the crossbeams extend beyond the connection points of the two ends of the connecting frames.

[0011] Furthermore, the bottom of the insertion rod has a tapered design.

[0012] Furthermore, the intersection points of the bracket serve as support fulcrums, and the connecting rods can also serve as support fulcrums.

[0013] Furthermore, the docking groove is located on both sides of the top of the crossbeam, and the docking groove is adapted to the docking crossbar, thereby connecting the docking grooves of adjacent support frames through the docking crossbar.

[0014] Furthermore, the bottom of the connecting frame of the upper support is provided with hooks for attaching the net body.

[0015] Furthermore, an external fixing hole is provided on the outer side of the docking groove on the crossbar, and an internal fixing hole is also provided on the side of the docking crossbar corresponding to the external fixing hole. Both the external fixing hole and the internal fixing hole are provided in two sets, which are provided near the front and rear ends of the docking groove and the docking crossbar.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Based on existing support structures, our designed support structure provides stable fulcrums for existing support technologies. The bottom of the lower support base is designed with insert rods for stable connection with the ground. The columns and brackets are arranged in an alternating manner, and connecting rods are added as fulcrums so that the columns (or diagonal braces) can be installed against this part. The connection design of the upper support base, etc., are coordinated with the support structure on the same side wall to transmit and distribute the pressure, thereby ensuring the stability of the support and avoiding the problem of insufficient support force causing the columns to tilt and collapse. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a support structure for foundation pit excavation provided by this utility model;

[0019] Figure 2 A schematic diagram of the cross frame structure of the upper support seat of a foundation pit excavation support structure provided by this utility model;

[0020] Figure 3 This is a schematic diagram of a support structure in the prior art.

[0021] Legend:

[0022] 1. Lower support base; 11. Insert rod;

[0023] 2. Supporting body; 21. Column; 22. Bracket; 23. Connecting rod;

[0024] 3. Upper support base; 31. Connecting groove; 32. Connecting crossbar; 33. External fixing hole; 34. Internal fixing hole;

[0025] 4. Horizontal frame; 41. Connecting frame; 42. Hook. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Example 1: As Figure 1-3 As shown, this utility model provides a technical solution: a support structure for foundation pit excavation, including a support frame set near the foundation pit wall. The support frame consists of a lower support seat 1, a support body 2, and an upper support seat 3. The lower support seat 1, the support body 2, and the upper support seat 3 are welded together. The support body 2 is located between the lower support seat 1 and the upper support seat 3. Insert rods 11 are provided at the bottom of the lower support seat 1 near the corner. The support body 2 consists of four columns 21 and brackets 22 arranged alternately on the same side of the columns 21. The brackets 22 have two sets of brackets located between the farther columns 21. Connecting rods 23 arranged laterally are provided on both sides of the brackets 22. The upper support seat 3 has docking grooves 31 on both sides. A docking crossbar 32 is slidably connected in the docking groove 31 on one side.

[0031] Example 2: As Figure 1-3As shown, both the lower support 1 and the upper support 3 are rectangular brackets 22 composed of two horizontal frames 4 and two connecting frames 41. The two ends of the horizontal frames 4 extend beyond the connection points of the two ends of the connecting frames 41, which makes it easier for workers to step on the area or use tools to insert the rod 11 into the soil.

[0032] The bottom of the insert rod 11 is tapered to facilitate the embedding of the support frame.

[0033] The intersection point of the support 22 serves as the support fulcrum, and the connecting rod 23 can also serve as the support fulcrum.

[0034] The docking groove 31 is located on both sides of the top of the cross frame 4. The docking groove 31 is adapted to the docking cross bar 32, and then the docking groove 31 of the adjacent support frame is connected through the docking cross bar 32. After the docking cross bar 32 is docked with the docking groove 31 of the adjacent support frame, the support frame on the same side of the foundation pit forms a whole.

[0035] The bottom of the connecting frame 41 of the upper support 3 is equipped with hooks 42 for hanging the net body.

[0036] An external fixing hole 33 is provided on the outer side of the docking groove 31 on the crossbar 4, and an internal fixing hole 34 is also provided on the side of the docking crossbar 32 corresponding to the external fixing hole 33. Both the external fixing hole 33 and the internal fixing hole 34 are provided in two sets, which are provided near the front and rear ends of the docking groove 31 and the docking crossbar 32.

[0037] Installation process of this support structure:

[0038] The support frame is installed at a suitable position on the edge of the pit. The bottom of the tapered rod 11 is inserted into the soil, and the intersection of the support bracket 22 on the edge of the pit serves as the support point. The connecting rod 23 can also serve as the support point. The support plate abuts against the side wall of the pit. The support is installed between the support plate and the support point, thereby supporting the side wall of the pit and preventing the pit from collapsing. The net is hung on the hook 42, and construction waste such as stones can be placed in it to increase the weight of the support frame and improve the stability of the support point. The connecting groove 31 of the adjacent support frame is connected by the connecting crossbar 32, and the support structure on the same side wall is connected to transmit and disperse the pressure. The support structure is installed by connecting the corresponding bolts through the outer fixing hole 33 and the inner fixing hole 34.

[0039] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A support structure for foundation pit excavation, comprising a support frame disposed near the foundation pit wall, characterized in that: The support frame consists of a lower support base (1), a support body (2) and an upper support base (3), with the support body (2) located between the lower support base (1) and the upper support base (3); The bottom of the lower support base (1) is provided with a plug (11) near the corner. The supporting body (2) consists of four columns (21) and a bracket (22) arranged in an alternating manner with the columns (21) on the same side. The bracket (22) has two sets of connecting rods (23) arranged horizontally between the columns (21) on the far side. Both sides of the upper support base (3) are provided with docking grooves (31), and a docking crossbar (32) is slidably connected in the docking groove (31) on one side.

2. The support structure for foundation pit excavation according to claim 1, characterized in that: The lower support (1) and the upper support (3) are both rectangular brackets (22) composed of two cross frames (4) and two connecting frames (41), and the two ends of the cross frames (4) extend beyond the connection points of the two ends of the connecting frames (41).

3. The support structure for foundation pit excavation according to claim 1, characterized in that: The bottom of the insertion rod (11) is tapered.

4. The support structure for foundation pit excavation according to claim 1, characterized in that: The intersection of the bracket (22) serves as the support fulcrum, and the connecting rod (23) can also serve as the support fulcrum.

5. The support structure for foundation pit excavation according to claim 2, characterized in that: The docking groove (31) is located on both sides of the top of the cross frame (4). The docking groove (31) is adapted to the docking cross bar (32) and then the docking groove (31) of the adjacent support frame is connected through the docking cross bar (32).

6. The support structure for foundation pit excavation according to claim 1, characterized in that: The bottom of the connecting frame (41) of the upper support base (3) is provided with hooks (42) for hanging the net body.

7. The support structure for foundation pit excavation according to claim 1, characterized in that: The outer side of the docking groove (31) is provided with an external fixing hole (33) on the crossbar (4), and the docking crossbar (32) is also provided with an internal fixing hole (34) on the side corresponding to the external fixing hole (33). The external fixing hole (33) and the internal fixing hole (34) are provided in two sets, which are opened at the front end and rear end of the docking groove (31) and the docking crossbar (32).

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