A composite support structure for a foundation pit

Abstract

The utility model relates to a kind of composite supporting structure for foundation pit, belong to building construction technical field, a kind of composite supporting structure for foundation pit, including foundation pit, the inside of foundation pit is provided with supporting installation component, the outside of supporting installation component is provided with splicing component, the upside of supporting installation component is provided with brick, the outside of brick is daubed with concrete, the utility model is pasted with the bottom of supporting plate and foundation pit bottom, installing splice plate at its one side, then another supporting plate is put, its installed splice plate is aligned with the limiting slot of previous supporting plate and slides in, then soil nail is punched into inner layer of foundation pit, so that two supporting plates are spliced firm and fixed in the inside of foundation pit, without separately building foundation template, supporting plate is directly used as template base, when splicing, save site cleaning, foundation leveling process, reduce process linkage waiting time, improve construction efficiency, while save traditional wall surface leveling before bricklaying, line shooting and other preprocessing steps, accelerate overall construction progress.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a composite support structure for foundation pits. Background Technology

[0002] An excavation pit is an underground space excavated for the construction of a building's foundation and basement. During the excavation process, the surrounding soil will inevitably collapse. Excavation pit support is a method of supporting and reinforcing the sidewalls of the excavation pit to prevent soil collapse and ensure the safe progress of construction, in order to ensure the safety of the underground structure construction and the surrounding environment.

[0003] For example, in Chinese invention disclosure CN116657612A entitled "A Composite Foundation Pit Support Structure," a support plate is included. A horizontal support rod assembly is connected to the side of the support plate away from the foundation pit wall. One end of the horizontal support rod assembly is detachably connected to the support plate, and the other end of the horizontal support rod assembly is connected to a vertical support rod assembly through a sleeve assembly. The above-mentioned prior art provides horizontal support for the support plate through the horizontal support rod assembly. The base and foundation pit column fix the overall support structure in the foundation pit. When used together, the present invention provides good support performance for the support plate. However, it is not convenient to splice the support plate and to lay bricks on the surface, which makes the cost of using traditional support high. Therefore, in order to reduce costs, a composite support structure for foundation pits is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a composite support structure for foundation pits that is simple in structure and reasonably designed in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A composite support structure for a foundation pit includes a foundation pit, a support installation assembly is provided inside the foundation pit, a splicing assembly is provided on the outside of the support installation assembly, bricks are provided on the upper side of the support installation assembly, and concrete is applied to the adjacent sides of the bricks and the support installation assembly.

[0007] As a further optimization of this utility model, the support installation assembly includes multiple support plates disposed inside the foundation pit. Each of the multiple support plates has an installation groove for setting bricks on its upper side, and a limit groove is provided on one side of each of the multiple support plates.

[0008] As a further optimization of this utility model, a leveling plate that contacts the bricks and the foundation pit is fixedly connected to the outer side of the plurality of support plates, and a through hole is provided on one side of the plurality of support plates.

[0009] As a further optimization of this utility model, the splicing assembly includes a splicing plate fixedly connected to the other side of the support plate, the splicing plate having a second through hole that matches the first through hole, and the splicing plate being slidably connected to the inside of the limiting groove.

[0010] As a further optimization of this utility model, soil nails are provided on the inner sides of the multiple through holes 2 and through holes 1, and one end of the soil nails is fixedly connected to the inner side of the foundation pit.

[0011] As a further optimization of this utility model, a steel mesh is provided on the bottom side of the support installation component, and the steel mesh cooperates with the soil nail.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model involves attaching the bottom of the support plate to the bottom of the foundation pit, installing a splicing plate on one side, and then sliding another support plate with its splicing plate aligned with the limiting groove of the first support plate. Soil nails are then driven into the inner layer of the foundation pit to firmly splice the two support plates and fix them to the inside of the foundation pit. By repeating all the above operations, the brick wall of the foundation pit sidewall can be completed without the need to build a separate foundation formwork. The support plate directly serves as the formwork base. The splicing process eliminates the need for site cleaning and foundation leveling, reduces waiting time between processes, and improves construction efficiency. At the same time, it eliminates the need for pre-treatment steps such as wall leveling and line marking before bricklaying, thus speeding up the overall construction progress.

[0014] 2. This utility model improves the supporting capacity of the brick wall by laying a steel mesh on the surface of the brick wall after the brick wall is built, with the steel mesh in contact with the soil nails, and then applying concrete to smooth it. At the same time, it is less expensive than traditional support methods. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the support plate after splicing according to this utility model;

[0017] Figure 3 This is a structural schematic diagram of the support and installation assembly of this utility model;

[0018] In the diagram: 1. Excavation pit; 2. Support installation components; 201. Support plate; 202. Installation groove; 203. Limiting groove; 204. Finding plate; 205. Through hole one; 3. Splicing components; 301. Splicing plate; 302. Through hole two; 303. Soil nail; 4. Brick. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, a composite support structure for foundation pits includes a foundation pit 1, which serves as the basic load-bearing space for the entire support structure. A support installation assembly 2 is installed inside the foundation pit 1, forming the core of the brick wall support framework. Bricks 4 are installed on the upper side of the support installation assembly 2. The combination of bricks 4 and concrete forms a protective layer on the sidewall of the foundation pit 1, effectively preventing soil and moisture from entering the foundation pit 1 and protecting the construction environment inside. Simultaneously, the brick wall formed by the bricks 4 possesses sufficient strength and rigidity to assist the support installation assembly. Component 2 resists external pressure and enhances the protective capability of the entire support system. The support installation component 2 includes multiple support plates 201. The support plates 201 can be flexibly combined and spliced ​​according to the length and width of the foundation pit 1 to meet the support requirements of foundation pits 1 of different sizes. The bottom sides of multiple support plates 201 are all set on the inside of the foundation pit 1. Placing the bottom side of the support plate 201 directly on the inside of the foundation pit 1 can make the support plate 201 in close contact with the bottom of the foundation pit, enhance the bottom support force of the support plate 201, and prevent the support plate 201 from tilting when bricks 4 are installed or when subjected to external forces.

[0022] like Figure 1 , Figure 2 , Figure 3 As shown, each of the multiple support plates 201 has an installation groove 202 on its upper side. The installation groove 202 provides a precise installation and positioning space for the bricks 4, allowing the bricks 4 to be neatly embedded in it, ensuring the consistency of the arrangement of the bricks 4 on the surface of the support plate 201. At the same time, the installation groove 202 can also limit the lateral displacement of the bricks 4, preventing the bricks 4 from shifting due to vibration or external force during use, and ensuring the regularity of the overall brick wall structure. The outer side of the bricks 4 is set on the inner side of the installation groove 202, reducing the gap between the bricks 4 and the support plate 201. The gap can be better filled when applying concrete later, enhancing the bonding strength between the bricks 4 and the support plate 201, and improving the shear resistance of the overall structure. A limiting groove 203 is opened on one side of the multiple support plates 201. The limiting groove 203 is used to provide sliding guidance and positioning channel.

[0023] like Figure 1 , Figure 2 , Figure 3As shown, multiple support plates 201 are fixedly connected to the outer sides with leveling plates 204. Leveling plates 204 fill the gap between the outer sides of the support plates 201 and the inner side of the pit 1, ensuring a tight fit between the support plates 201 and the inner side of the pit 1. This ensures that the force on the support plates 201 is evenly transmitted to the sidewalls of the pit 1. Simultaneously, leveling plates 204 also assist in adjusting the verticality of the support plates 201. One side of the leveling plate 204 contacts the inner side of the pit 1, preventing direct contact between the support plates 201 and the sidewalls of the pit 1, thus avoiding excessive local pressure and protecting the sidewalls of the pit 1 from damage. The other side of the leveling plate 204 contacts the bricks 4. 04 On the other side, it contacts the brick 4 and can provide auxiliary support for the brick 4, reducing the deformation of the brick 4 due to its own weight or external load. One side of the multiple support plates 201 has a through hole 205. The adjacent sides of the brick 4 and the limiting groove 202 are covered with concrete to fill the gaps between the bricks 4 and the gaps between the bricks 4 and the support plates 201 and the leveling plates 204, so that the bricks 4 and the support installation components 2 form an integral structure, enhancing the integrity and sealing of the structure. At the same time, after the concrete solidifies, it can improve the strength and impermeability of the brick wall, preventing water penetration that could damage the bricks 4 or soften the soil on the side wall of the pit 1.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, a splicing component 3 is provided on the outer side of the support installation assembly 2. The splicing component 3 connects multiple support plates 201, solving the problem that the length of a single support plate 201 is insufficient to cover the sidewall of the pit 1. This allows the support installation assembly 2 to be flexibly expanded according to the size of the pit 1. At the same time, the connection method of the splicing component 3 is simple and reliable, facilitating on-site construction operations and improving the assembly efficiency of the support system. The splicing component 3 includes a splicing plate 301, which serves as the core connector of the splicing component 3. Its structural design can adapt to the limiting groove 2 of the support plate 201. 03 and through hole 205 achieve initial positioning of support plate 201 through sliding cooperation with limiting groove 203. One side of splicing plate 301 is fixedly connected to the other side of support plate 201, so that splicing plate 301 and support plate 201 form a stable integrated structure. When splicing another support plate 201 in the future, splicing plate 301 will not be relatively displaced with the original support plate 201, ensuring the accuracy of splicing positioning. At the same time, the fixed connection method can enhance the load-bearing capacity of splicing plate 301. Three through holes 302 are opened inside splicing plate 301.

[0025] like Figure 1 , Figure 2 , Figure 3As shown, soil nails 303 are installed on the inner sides of multiple through holes 302 and 205. One end of the soil nail 303 is fixedly connected to the inner side of the foundation pit 1. As a core fixing component, the soil nail 303 can penetrate the splicing plate 301 and the support plate 201 and be driven into the inner side of the foundation pit 1, tightly anchoring the support installation component 2 to the foundation pit 1. This prevents the support installation component 2 from relative displacement with the foundation pit 1 under external loads, ensuring the stability of the entire support system. The through holes 302 and 205 cooperate to ensure that the soil nail 303 can smoothly pass through the splicing plate 301 and the support plate 201 during penetration, avoiding the inability to install the soil nail 303 or uneven stress after installation due to misalignment of the holes. The holes in the cooperated state can ensure that the soil nail 303 and the support installation component 2 are tightly anchored together. The splicing plate 301 and the support plate 201 are in close contact, which enhances the anchoring effect of the soil nail 303 and improves the stability of the splice. The external sliding connection of the splicing plate 301 is inside the limiting groove 203. A steel mesh is provided on the bottom side of the support installation component 2. The steel mesh can enhance the bonding strength between the bottom of the support installation component 2 and the concrete, so that when the concrete is applied later, the concrete can form a more stable overall structure with the steel mesh, which improves the bearing capacity and crack resistance of the bottom of the support system and avoids cracks in the concrete due to excessive stress at the bottom, which would affect the overall stability. The steel mesh works in conjunction with the soil nail 303. The soil nail 303 can fix the steel mesh and prevent the steel mesh from shifting during installation or use, ensuring that the steel mesh is always in the preset position.

[0026] It should be noted that, in this composite support structure for foundation pits, when building a brick wall after installing support plates 201 on the sidewall of foundation pit 1, the bottom of one support plate 201 is first brought into contact with the bottom of foundation pit 1. Then, a splicing plate 301 is installed on one side. Bricks 4 are coated with concrete and installed in each installation groove 202, so that bricks 4 are installed on the surface of support plate 201. Then, another support plate 201 is installed with splicing plate 301 and slid into limiting groove 203, so that soil nails 303 penetrate through through hole 2 302, through hole 1 205 and a portion of bricks 4 near splicing plate 301, and are then driven into the inner layer of foundation pit 1, so that the two support plates 201 are spliced ​​together and fixed to the inner side of foundation pit 1. Then, the above operation is repeated to complete the overall brick wall construction on the sidewall of foundation pit 1.

[0027] After the brick wall is built, a steel mesh is laid on the surface of the brick wall, and the steel mesh is in contact with the soil nail 303. Then, concrete is applied and smoothed out.

[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A composite support structure for a foundation pit, comprising a foundation pit (1), characterized in that, The foundation pit (1) is equipped with a support installation assembly (2), and a splicing assembly (3) is provided on the outside of the support installation assembly (2). A brick (4) is provided on the upper side of the support installation assembly (2), and concrete is applied to the adjacent sides of the brick (4) and the support installation assembly (2).

2. The composite support structure for foundation pits according to claim 1, characterized in that: The support installation assembly (2) includes multiple support plates (201) disposed inside the pit (1). Each of the multiple support plates (201) has an installation groove (202) for setting bricks (4) on its upper side, and a limiting groove (203) is provided on one side of each of the multiple support plates (201).

3. A composite support structure for foundation pits according to claim 2, characterized in that: The outer side of the plurality of support plates (201) is fixedly connected with a level plate (204) that contacts the brick (4) and the foundation pit (1), and a through hole (205) is provided on one side of the plurality of support plates (201).

4. A composite support structure for foundation pits according to claim 3, characterized in that: The splicing assembly (3) includes a splicing plate (301) fixedly connected to the other side of the support plate (201). The splicing plate (301) has a through hole (302) inside that matches the through hole (205). The splicing plate (301) is slidably connected to the inside of the limiting groove (203).

5. A composite support structure for foundation pits according to claim 4, characterized in that: Soil nails (303) are provided on the inner side of each of the multiple through holes 2 (302) and through holes 1 (205), and one end of each soil nail (303) is fixedly connected to the inner side of the foundation pit (1).

6. A composite support structure for foundation pits according to claim 5, characterized in that: The bottom side of the support installation component (2) is provided with a steel mesh, which cooperates with the soil nail (303).

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