Foundation pit supporting structure

Abstract

The utility model relates to the technical field of foundation pit supporting, and provides a foundation pit supporting structure which comprises a plurality of supporting plates which are tightly attached to the side wall of a foundation pit and are vertically arranged, every two adjacent supporting plates are connected through a connecting mechanism, and each connecting mechanism comprises a first movable block and a second movable block. The first movable block and the second movable block are slidably connected with the supporting plates on the two sides respectively, a first connecting block and a second connecting block are fixed to the two close side walls of the first movable block and the second movable block respectively, and the first connecting block and the second connecting block are locked through a locking piece. The supporting device has the advantages that every two adjacent supporting plates are connected through the corresponding connecting mechanism, the included angle between every two adjacent supporting plates can be adjusted through the corresponding connecting piece, the first connecting blocks and the second connecting blocks are fixed through the locking pieces, rigid connection is formed, the supporting device can be matched with the corners of a foundation pit, and the supporting effect is good. The defect that a traditional splicing structure can only achieve linear splicing is overcome, and the connection stability is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation pit support, specifically to a foundation pit support structure. Background Technology

[0002] In building construction, foundation pit support is a crucial link in ensuring the safety of underground structure construction and the stability of the surrounding environment. With the acceleration of urbanization, foundation pit projects are showing a trend of increasing depth and more complex surrounding environments (such as proximity to subway lines, old building complexes, and areas with dense underground pipelines), which places higher demands on the safety, deformation control capabilities, and ease of construction of support structures.

[0003] Existing foundation pit support generally uses protective plates and support mechanisms to support and protect the side walls of the foundation pit. However, there is no stable connection between the protective plates and no angle adjustment function, which makes it impossible for the protective plates to form a continuous rigid connection at the corner of the foundation pit. This results in the lack of support at the corner of the foundation pit and the overall connection being unstable. Utility Model Content

[0004] This utility model proposes a foundation pit support structure in which two adjacent support plates are connected by a connecting mechanism. The connecting parts can adjust the included angle between the two adjacent support plates, and the locking parts are used to fix the first connecting block and the second connecting block to form a rigid connection. This structure can be adapted to the corners of the foundation pit, solves the defect of traditional splicing structures that can only be spliced ​​in a straight line, and improves the connection stability.

[0005] Therefore, the technical solution adopted is as follows:

[0006] A foundation pit support structure includes multiple support plates vertically arranged close to the sidewall of the foundation pit. Adjacent support plates are connected by a connecting mechanism. The connecting mechanism includes a first movable block and a second movable block. The first movable block and the second movable block are slidably connected to the support plates on both sides. A first connecting block and a second connecting block are fixed on two sidewalls close to the first movable block and the second movable block, respectively. The first connecting block and the second connecting block are locked by locking members.

[0007] A further technical solution is that the locking component includes a connecting bolt, and both the first connecting block and the second connecting block have through holes. The connecting bolt passes through the two through holes and locks the first connecting block and the second connecting block by means of two nuts sleeved at both ends.

[0008] A further technical solution is that both the first connecting block and the second connecting block are provided with receiving grooves. The second connecting block is inserted into the receiving groove of the first connecting block and locked by connecting bolts and nuts. Two retaining rings are fitted on the connecting bolts and threadedly connected to them. Both retaining rings are located inside the receiving groove of the second connecting block and abut against its inner sidewall.

[0009] A further technical solution is that the connecting mechanism further includes a first fixing bolt and a second fixing bolt. The first movable block has a first oblong hole, and the second movable block has a second oblong hole. The first fixing bolt passes through the first oblong hole and is threadedly connected to the support plate on which it is located. The second fixing bolt passes through the second oblong hole and is threadedly connected to the support plate on which it is located.

[0010] A further technical solution is that a number of reinforcing ribs are fixed on the support plate, and the number of reinforcing ribs are distributed in a mesh structure.

[0011] A further technical solution is that each support plate is connected to a support member, the support member including a base plate riveted to the ground by fixing nails, and an inclined support rod connecting the base plate and the support member.

[0012] The working principle and beneficial effects of this application are as follows:

[0013] 1. Adjacent support plates are connected by a connecting mechanism. The first connecting block and the second connecting block are connected by a locking member, allowing the first connecting block and the second connecting block to rotate around the locking member. This adjusts the included angle between the two adjacent support plates. The locking member then fixes the first connecting block and the second connecting block, forming a rigid connection. This design is suitable for corners in foundation pits, solving the problem that traditional splicing structures can only be spliced ​​in a straight line, and improving connection stability.

[0014] 2. By adjusting the positions of the first and second fixing bolts through the first and second oblong holes, the distance between the two support plates can be adjusted to accommodate more size situations, compensate for the length error between the foundation pit and the support plate, and ensure that the support plate fits tightly against the corner of the foundation pit. Attached Figure Description

[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a schematic diagram of the structure of the support plate described in this application;

[0018] Figure 3 This is a schematic diagram of the structure of the support member described in this application;

[0019] Figure 4 This is a schematic diagram of the connection mechanism described in this application;

[0020] Figure 5 This is an exploded structural diagram of the connecting mechanism described in this application.

[0021] In the diagram: 1. Support plate; 2. Support component; 21. Support rod; 22. Base plate; 23. Fixing nail; 3. Mesh reinforcing rib; 4. Connecting mechanism; 41. First movable block; 42. First connecting block; 43. Second movable block; 44. Second connecting block; 45. Locking component; 451. Connecting bolt; 452. Retaining ring; 453. Nut; 46. First oblong hole; 47. First fixing bolt; 48. Second oblong hole; 49. Second fixing bolt. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figures 1-5 As shown, a foundation pit support structure includes multiple support plates 1 vertically arranged close to the side wall of the foundation pit. Adjacent support plates 1 are connected by a connecting mechanism 4. The connecting mechanism 4 includes a first movable block 41 and a second movable block 43. The first movable block 41 and the second movable block 43 are slidably connected to the support plates 1 on both sides. A first connecting block 42 and a second connecting block 44 are fixed on the two side walls of the first movable block 41 and the second movable block 43 that are close to each other. The first connecting block 42 and the second connecting block 44 are locked by a locking member 45.

[0024] In this embodiment, the support plate 1 abuts against the side wall of the foundation pit, bearing the lateral pressure of the soil on the side wall of the foundation pit. Multiple support plates 1 are spliced ​​together using the connecting mechanism 4 to form a continuous retaining interface. Adjacent support plates 1 are connected by the connecting mechanism 4. The first connecting block 42 and the second connecting block 44 are connected by a locking member 45, allowing the first connecting block 42 and the second connecting block 44 to rotate around the locking member 45, thereby adjusting the included angle between adjacent support plates 1. The locking member 45 then fixes the first connecting block 42 and the second connecting block 44, forming a rigid connection. This connection can accommodate corners of the foundation pit, such as 90° right angles, overcoming the limitation of traditional splicing structures that can only be spliced ​​in straight lines.

[0025] like Figures 4-5As shown, the locking component 45 includes a connecting bolt 451. Both the first connecting block 42 and the second connecting block 44 have through holes. The connecting bolt 451 passes through both through holes and is locked to the first connecting block 42 and the second connecting block 44 by two nuts 453 fitted at both ends. Both the first connecting block 42 and the second connecting block 44 have receiving grooves. The second connecting block 44 is inserted into the receiving groove of the first connecting block 42 and locked by the connecting bolt 451 and the nuts 453. Two retaining rings 452, threadedly connected to the connecting bolt 451, are fitted onto the connecting bolt 451. Both retaining rings 452 are located inside the receiving groove of the second connecting block 44 and abut against its inner sidewall.

[0026] In this embodiment, the first connecting block 42 on the upper part of the support plate 1 is aligned with the second connecting block 44 on the adjacent support plate 1. The connecting bolt 451 is inserted from the bottom, and a pair of retaining rings 452 are fitted in, so that the pair of retaining rings 452 are located inside the second connecting block 44. At this time, the two adjacent support plates 1 can adjust their angle around the connecting bolt 451. Finally, nuts 453 are screwed on both ends of the connecting bolt 451, and the nuts 453 are tightened with a wrench to lock the angle of the two support plates 1 and form a rigid connection.

[0027] like Figures 4-5 As shown, the connecting mechanism 4 also includes a first fixing bolt 47 and a second fixing bolt 49. The first movable block 41 has a first oblong hole 46, and the second movable block 43 has a second oblong hole 48. The first fixing bolt 47 passes through the first oblong hole 46 and is threadedly connected to the support plate 1 on which it is located. The second fixing bolt 49 passes through the second oblong hole 48 and is threadedly connected to the support plate 1 on which it is located. Through the first fixing bolt 47 and the first oblong hole 46, the first movable block 41 is allowed to move within a certain range on one side of the support plate 1. Through the second fixing bolt 49 and the second oblong hole 48, it is allowed to move within a certain range on one side of the support plate 1, thereby compensating for length errors and ensuring that the support plate 1 can tightly fit the corner of the foundation pit.

[0028] It should be noted that guide blocks are provided on the side walls of the first movable block 41 and the second movable block 43, and guide grooves are provided on the side walls of the support plate 1, so that the first movable block 41 and the second movable block 43 can slide along the guide grooves.

[0029] like Figures 1-2 As shown, a number of reinforcing ribs 3 are fixed on the support plate 1, and the reinforcing ribs 3 are distributed in a mesh structure. The mesh reinforcing ribs 3 are welded to the surface of the support plate 1, forming a composite stress system with the plate body, dispersing local stress, and improving the bending and crack resistance of the support plate.

[0030] like Figures 1-3As shown, each support plate 1 is connected to a support member 2. The support member 2 includes a base plate 22 riveted to the ground by fixing nails 23. An inclined support rod 21 is connected between the base plate 22 and the support member 2. The fixing nails 23 are inserted into the foundation soil layer to anchor the base plate 22 to the soil. The two ends of the support rod 21 are welded or bolted to the bottom of the support plate 1 and the base plate 22, respectively. The triangular support system enhances the overturning resistance of the support plate 1.

[0031] In use, the support plate 1 abuts against the side wall of the foundation pit and bears the lateral pressure of the soil on the side wall of the foundation pit. The bottom plate 22 is anchored to the soil by inserting the fixing nails 23 into the foundation soil layer. The two ends of the support rod 21 are welded or bolted to the bottom of the support plate 1 and the bottom plate 22 respectively. The triangular support system enhances the overturning resistance of the support plate 1. Multiple support plates 1 are spliced ​​together by the connecting mechanism 4 to form a continuous retaining interface.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A foundation pit support structure, comprising a plurality of support plates (1) vertically arranged close to the sidewall of the foundation pit, characterized in that: Two adjacent support plates (1) are connected by a connecting mechanism (4). The connecting mechanism (4) includes a first movable block (41) and a second movable block (43). The first movable block (41) and the second movable block (43) are slidably connected to the support plates (1) on both sides respectively. A first connecting block (42) and a second connecting block (44) are fixed on the two side walls of the first movable block (41) and the second movable block (43) respectively. The first connecting block (42) and the second connecting block (44) are locked by a locking member (45).

2. The foundation pit support structure according to claim 1, characterized in that, The locking component (45) includes a connecting bolt (451). The first connecting block (42) and the second connecting block (44) are provided with through holes. The connecting bolt (451) passes through the two through holes and locks the first connecting block (42) and the second connecting block (44) by two nuts (453) sleeved at both ends.

3. The foundation pit support structure according to claim 2, characterized in that, The first connecting block (42) and the second connecting block (44) are both provided with receiving grooves. The second connecting block (44) is inserted into the receiving groove of the first connecting block (42) and locked by connecting bolts (451) and nuts (453). The connecting bolts (451) are fitted with two retaining rings (452) that are threadedly connected to them. The two retaining rings (452) are located inside the receiving groove of the second connecting block (44) and abut against its inner sidewall.

4. The foundation pit support structure according to claim 1, characterized in that, The connecting mechanism (4) further includes a first fixing bolt (47) and a second fixing bolt (49). The first movable block (41) has a first waist-shaped hole (46), and the second movable block (43) has a second waist-shaped hole (48). The first fixing bolt (47) passes through the first waist-shaped hole (46) and is threadedly connected to the support plate (1) where it is located. The second fixing bolt (49) passes through the second waist-shaped hole (48) and is threadedly connected to the support plate (1) where it is located.

5. The foundation pit support structure according to claim 1, characterized in that, The support plate (1) is fixed with several reinforcing ribs (3), which are distributed in a mesh structure.

6. The foundation pit support structure according to claim 1, characterized in that, Each support plate (1) is connected to a support member (2), the support member (2) including a base plate (22) riveted to the ground by fixing nails (23), and an inclined support rod (21) connecting the base plate (22) and the support member (2).

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