Foundation pit supporting structure

Abstract

The utility model discloses a foundation pit supporting structure, which belongs to the technical field of foundation pit supporting and comprises a plurality of groups of steel corbels, connecting frames are mounted at the top ends of the plurality of groups of steel corbels, steel pipes are mounted between the two groups of steel corbels, connecting plates are arranged on the side surfaces of the two groups of adjacent steel corbels, and two groups of fixing bolts are inserted into the connecting plates. Inserting holes matched with the fixing bolts are formed in the steel corbels, the fixing bolts sequentially penetrate through the connecting plates and the steel corbels to be connected to the inner wall of the foundation pit, and a plurality of sets of channel steel are clamped to the tops of the connecting frames; an additional transverse supporting effect is provided for the supporting structure, the bearing capacity of the supporting structure is further improved, the stability of the overall structure is improved, meanwhile, the supporting structure can be matched with installation of an external drainage pipeline, the supporting structure is suitable for different geological conditions, and the supporting structure is simple in structure, convenient to construct and high in practicability after construction is finished. And the vertical supporting steel pipes and the transverse supporting steel channels can be conveniently disassembled and recycled, so that the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit support, and in particular to a foundation pit support structure. Background Art

[0002] With the acceleration of urbanization, the development and utilization of underground space has increased. Foundation pit support technology, as a key technology to ensure the safety of underground engineering construction, has been widely used.

[0003] At present, common foundation pit support structures mainly include pile support, soil nail wall support, etc. Although these support structures can meet the needs of foundation pit support to a certain extent, their stability is often difficult to guarantee when facing complex geological conditions such as soft soil and high water level, which can easily lead to safety accidents such as foundation pit collapse. At the same time, the construction efficiency is low and the construction cost is high.

[0004] To this end, the present application provides a foundation pit support structure. Utility Model Content

[0005] In response to the shortcomings of the existing technology, this application provides a foundation pit support structure that overcomes the shortcomings of the existing technology and aims to solve the current problems. Common foundation pit support structures mainly include pile support, soil nail wall support, etc. Although these support structures can meet the needs of foundation pit support to a certain extent, their stability is often difficult to guarantee when facing complex geological conditions such as soft soil and high water levels, which can easily lead to safety accidents such as foundation pit collapse. At the same time, the construction efficiency is low and the construction cost is high.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a foundation pit support structure, comprising several groups of steel corbels, the tops of several groups of the steel corbels are installed with connecting frames, steel pipes are installed between two groups of the steel corbels, and connecting plates are provided on the sides of the two adjacent groups of the steel corbels, two groups of fixing bolts are inserted into the interior of the connecting plates, and the interior of the steel corbels is provided with sockets matching the fixing bolts, and the fixing bolts are sequentially passed through the connecting plates and the steel corbels to be connected to the inner wall of the foundation pit, and several groups of channel steels are clamped on the top of the connecting frame.

[0007] By adopting the above technical solution, two groups of adjacent steel corbels are connected by connecting plates, and the steel corbels are fixed by fixing bolts, so that several groups of steel corbels form a support body around the inner wall of the foundation pit, and the inner wall of the foundation pit is supported by a connecting frame installed above the several groups of steel corbels, and the vertical support steel pipe is installed between the two groups of adjacent steel corbels, thereby ensuring the lateral force resistance and anti-overturning ability of the support structure. The transverse support channel steel is clamped on the top of the connecting frame to provide additional transverse support effect for the support structure, further increasing the bearing capacity of the support structure and improving the stability of the overall structure. At the same time, it can cooperate with the installation of external drainage pipes, which is conducive to adapting to different geological conditions. The present application has a simple structure and is easy to construct. After the construction is completed, it is also easy to disassemble and recycle the vertical support steel pipe and the transverse support channel steel, thereby improving construction efficiency and reducing construction costs.

[0008] As a preferred technical solution of the present application, a plurality of groups of slots are provided at the bottom of the channel steel, and the slots are adapted to the connecting frame, and the channel steel is connected to the top of the connecting frame through the slots.

[0009] By adopting the above technical solution, several groups of slots are opened at the bottom of the channel steel to realize the connection between the channel steel and the connecting frame. The slots are adapted to the connecting frame, so that the channel steel can be firmly connected to the connecting frame, thereby improving the overall rigidity and stability of the support structure.

[0010] As a preferred technical solution of the present application, the connecting frame includes several groups of steel purlins, and the number of the steel purlins is at least four. The connection points of two connected groups of the steel purlins are welded.

[0011] By adopting the above technical solution, the inner wall of the foundation pit is effectively supported by at least four groups of steel purlins. The connection between the two groups of steel purlins is a welded connection, which ensures the connection strength between the two groups of steel purlins and enhances the overall strength of the connecting frame.

[0012] As a preferred technical solution of the present application, corner braces are fixedly installed at the four corners of the inner circle of the connecting frame.

[0013] By adopting the above technical solution, additional support is provided to the four corners of the inner circle of the connecting frame through the corner braces, which prevents the connecting frame from being deformed under the action of soil pressure, thereby improving the safety during the foundation pit excavation process.

[0014] As a preferred technical solution of the present application, the space between the side of the channel steel close to the inner wall of the foundation pit and the inner wall of the foundation pit is filled with concrete.

[0015] By adopting the above technical solution, the gap can be effectively filled by filling concrete between the channel steel and the inner wall of the foundation pit, and the connection strength between the channel steel and the inner wall of the foundation pit is enhanced.

[0016] As a preferred technical solution of the present application, the fixed seat is pre-buried in the foundation pit, and the fixed seat is matched with the fixed bolt.

[0017] By adopting the above technical solution, the fixed seat is pre-buried in the foundation pit, which is conducive to the firm connection between the fixed bolt and the inner wall of the foundation pit, and improves the stability and safety of the supporting structure.

[0018] As a preferred technical solution of the present application, the steel hanger is internally fixedly installed with a plurality of groups of reinforcing ribs.

[0019] By adopting the above technical solution, the reinforcing rib can significantly improve the strength and rigidity of the steel hanger, improve the carrying capacity and stability of the steel hanger, and is conducive to the stability of the supporting structure.

[0020] As a preferred technical solution of the present application, the distance between two adjacent steel hangers is 2 meters.

[0021] By adopting the above technical solution, the distance between two adjacent steel hangers is 2 meters, which is a reasonable distance determined according to the actual situation, can ensure that the supporting structure has sufficient rigidity and stability when bearing the pressure of the foundation pit, and is also conducive to construction and installation.

[0022] The beneficial effects of the present application are:

[0023] 1. By connecting two adjacent steel hangers through the connecting plate and fixing the steel hangers through the fixed bolt, a plurality of groups of steel hangers form a support body around the inner wall of the foundation pit, the inner wall of the foundation pit is supported by the connecting frame installed above the plurality of groups of steel hangers, the vertical supporting steel pipe is installed between two adjacent steel hangers, the lateral force resistance and overturning resistance of the supporting structure are ensured, the horizontal support effect of the supporting structure is provided by the cross support channel steel clamped at the top end of the connecting frame, the carrying capacity of the supporting structure is further increased, the stability of the overall structure is improved, and the installation of the external drainage pipeline can be matched, which is conducive to different geological conditions. The present application has simple structure, is convenient for construction, after construction is completed, the vertical supporting steel pipe and the horizontal supporting channel steel can be easily disassembled and recycled, thereby improving the construction efficiency and reducing the construction cost.

[0024] 2. A plurality of clamping grooves are formed in the bottom of the channel steel to realize the connection between the channel steel and the connecting frame, the channel steel is clamped on the connecting frame through the clamping grooves matched with the connecting frame, and the overall rigidity and stability of the supporting structure are improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The overall structure of the present application is shown in the figure;

[0026] Figure 2A schematic diagram of part of the structure of this application;

[0027] Figure 3 It is a schematic diagram of the connection structure between the channel steel and the connecting frame;

[0028] Figure 4 This is a schematic diagram of the steel corbel and steel pipe structure;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the steel corbel.

[0030] In the figure: 1. Steel corbel; 2. Connecting frame; 201. Steel purlin; 3. Steel pipe; 4. Connecting plate; 5. Fixing bolt; 6. Channel steel; 7. Slot; 8. Corner brace; 9. Reinforcement rib. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] Reference Figure 1-5 A foundation pit support structure includes several groups of steel corbels 1, the tops of several groups of steel corbels 1 are installed with connecting frames 2, steel pipes 3 are installed between two groups of steel corbels 1, connecting plates 4 are provided on the sides of two adjacent groups of steel corbels 1, two groups of fixing bolts 5 are inserted into the inside of the connecting plates 4, and the interior of the steel corbels 1 is provided with insertion holes matching the fixing bolts 5. The fixing bolts 5 pass through the connecting plates 4 and the steel corbels 1 in turn and are connected to the inner wall of the foundation pit. Several groups of channel steels 6 are clamped on the top of the connecting frame 2; the connecting frame 2 includes several groups of steel purlins 201, and there are at least four groups of steel purlins 201. The connection between the two connected groups of steel purlins 201 is welded.

[0033] By connecting two groups of adjacent steel corbels 1 with a connecting plate 4 and fixing the steel corbels 1 with fixing bolts 5, several groups of steel corbels 1 form a supporting body around the inner wall of the foundation pit. The connecting frame 2 is installed above the several groups of steel corbels 1 to support the inner wall of the foundation pit. The vertical support steel pipe 3 is installed between the two groups of adjacent steel corbels 1 to ensure the lateral force resistance and anti-overturning ability of the supporting structure. The transverse support channel steel 6 is clamped on the top of the connecting frame to provide additional transverse support effect for the supporting structure, further increasing the bearing capacity of the supporting structure. It improves the stability of the overall structure and, at the same time, can cooperate with the installation of external drainage pipes, which is conducive to adapting to different geological conditions. The present application has a simple structure and is easy to construct. After the construction is completed, it is also easy to disassemble and recycle the vertical support steel pipes 3 and the horizontal support channel steels 6, thereby improving construction efficiency and reducing construction costs. The inner wall of the foundation pit is effectively supported by at least four groups of steel purlins 201, and the connection between the two groups of steel purlins 201 is a welded connection, which ensures the connection strength between the two groups of steel purlins 201 and enhances the overall strength of the connecting frame 2.

[0034] Reference Figure 2-4 The bottom of the channel steel 6 is provided with a plurality of slots 7, and the slots 7 are adapted to the connecting frame 2, and the channel steel 6 is connected to the top of the connecting frame 2 through the slots 7; the four corners of the inner circle of the connecting frame 2 are fixedly installed with corner braces 8;

[0035] A plurality of groups of slots 7 are provided at the bottom of the channel steel 6 to realize the connection between the channel steel 6 and the connecting frame 2. The slots 7 are adapted to the connecting frame 2 so that the channel steel 6 can be firmly connected to the connecting frame 2, thereby improving the overall rigidity and stability of the support structure. The angle braces 8 provide additional support to the four corners of the inner circle of the connecting frame 2 to prevent the connecting frame 2 from deforming under the action of soil pressure, thereby improving the safety during the foundation pit excavation process.

[0036] Reference Figure 2-5 , the side of the channel steel 6 close to the inner wall of the foundation pit and the inner wall of the foundation pit are filled with concrete; several groups of reinforcing ribs 9 are fixedly installed inside the steel corbel 1; by filling concrete between the channel steel 6 and the inner wall of the foundation pit, the gap can be effectively filled, and the connection strength between the channel steel 6 and the inner wall of the foundation pit is enhanced; the reinforcing ribs 9 can significantly improve the strength and rigidity of the steel corbel 1, improve the bearing capacity and stability of the steel corbel 1, and are beneficial to the stability of the support structure.

[0037] Reference Figure 1, a fixing seat is embedded in the foundation pit, and the fixing seat is adapted to the fixing bolt 5; the spacing between two adjacent sets of steel corbels 1 is 2 meters; the fixing seat is embedded in the foundation pit, which is conducive to the firm connection between the fixing bolt 5 and the inner wall of the foundation pit, thereby improving the stability and safety of the support structure; the spacing between two adjacent sets of steel corbels 1 is 2 meters, which is a reasonable spacing determined by the actual situation on site, which can ensure that the support structure has sufficient rigidity and stability when bearing the foundation pit pressure, and is also conducive to construction and installation.

[0038] Working principle: connect two groups of adjacent steel corbels 1 with connecting plates 4, fix the steel corbels 1 with fixing bolts 5, so that several groups of steel corbels 1 form a support body around the inner wall of the foundation pit, and support the inner wall of the foundation pit by installing connecting frames 2 above several groups of steel corbels 1. Install vertical supporting steel pipes 3 between two groups of adjacent steel corbels 1 to ensure the lateral force resistance and anti-overturning ability of the supporting structure. The transverse supporting channel steel 6 is clamped on the top of the connecting frame to provide additional transverse support effect for the supporting structure, further increasing the bearing capacity of the supporting structure. Improve the stability of the overall structure. At the same time, it can cooperate with the installation of external drainage pipes, which is conducive to adapting to different geological conditions. The present application has a simple structure and is easy to construct. After the construction is completed, it is also easy to disassemble and recycle the vertical support steel pipe 3 and the horizontal support channel steel 6, thereby improving construction efficiency and reducing construction costs. A plurality of groups of card slots 7 are provided at the bottom of the channel steel 6 to realize the connection between the channel steel 6 and the connecting frame 2. The card slots 7 are adapted to the connecting frame 2, so that the channel steel 6 can be firmly clamped on the connecting frame 2, thereby improving the overall rigidity and stability of the support structure.

[0039] Among them, at least four groups of steel purlins 201 are used to effectively support the inner wall of the foundation pit. The connection between the two groups of steel purlins 201 is a welded connection, which ensures the connection strength between the two groups of steel purlins 201 and enhances the overall strength of the connecting frame 2. The corner braces 8 provide additional support to the four corners of the inner circle of the connecting frame 2 to prevent the connecting frame 2 from deforming under the action of soil pressure, thereby improving the safety during the foundation pit excavation process.

[0040] At the same time, by filling concrete between the channel steel 6 and the inner wall of the foundation pit, the gap can be effectively filled, and the connection strength between the channel steel 6 and the inner wall of the foundation pit can be enhanced; the fixing seat pre-buried in the foundation pit is conducive to the firm connection between the fixing bolts 5 and the inner wall of the foundation pit, thereby improving the stability and safety of the support structure;

[0041] In addition, the reinforcement ribs 9 can significantly improve the strength and rigidity of the steel corbels 1, thereby improving the bearing capacity and stability of the steel corbels 1, which is beneficial to the stability of the support structure; the spacing between two adjacent groups of steel corbels 1 is 2 meters, which is a reasonable spacing determined according to the actual situation on site, and can ensure that the support structure has sufficient rigidity and stability when bearing the foundation pit pressure, and is also beneficial to construction and installation.

[0042] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A foundation pit support structure comprising a plurality of steel brackets (1), characterized in that: A connecting frame (2) is installed on the top of several groups of steel corbels (1), a steel pipe (3) is installed between two groups of steel corbels (1), and a connecting plate (4) is provided on the side of two adjacent groups of steel corbels (1). Two groups of fixing bolts (5) are inserted into the interior of the connecting plate (4). Sockets matching the fixing bolts (5) are opened inside the steel corbels (1). The fixing bolts (5) pass through the connecting plate (4) and the steel corbels (1) in sequence and are connected to the inner wall of the foundation pit. Several groups of channel steels (6) are clamped on the top of the connecting frame (2).

2. A foundation pit support structure according to claim 1, characterized in that: The bottom of the channel steel (6) is provided with a plurality of groups of slots (7), and the slots (7) are adapted to the connecting frame (2), and the channel steel (6) is connected to the top of the connecting frame (2) through the slots (7).

3. The foundation pit support structure according to claim 1, characterized in that: The connecting frame (2) comprises a plurality of groups of steel purlins (201), wherein the number of the steel purlins (201) is at least four, and the connection points of two connected groups of the steel purlins (201) are welded.

4. The foundation pit support structure according to claim 1, characterized in that: Corner braces (8) are fixedly mounted at the four corners of the inner circle of the connecting frame (2).

5. The foundation pit supporting structure according to claim 1, characterized in that: Concrete is filled between the side of the channel steel (6) close to the inner wall of the foundation pit and the inner wall of the foundation pit.

6. The foundation pit supporting structure according to claim 1, characterized in that: A fixing seat is pre-buried in the foundation pit, and the fixing seat is compatible with the fixing bolt (5).

7. The foundation pit supporting structure according to claim 1, characterized in that: Several groups of reinforcing ribs (9) are fixedly installed inside the steel corbel (1).

8. The foundation pit supporting structure according to claim 1, characterized in that: The distance between two adjacent sets of steel corbels (1) is 2 meters.

Images