Foundation pit slope retaining wall structure

Abstract

The utility model relates to the related technical field of constructional engineering, in particular to a foundation pit slope retaining wall structure which comprises a foundation, a retaining wall mechanism is arranged on the upper surface of the foundation, and a reinforcing mechanism is arranged on the surface of one side of the retaining wall mechanism. According to the foundation pit slope retaining wall structure, through the arrangement of the retaining wall mechanism, when the foundation pit slope retaining wall structure is used, the retaining wall plates are prefabricated plates, the middle plates evenly diffuse lateral pressure, the rigidity of the retaining wall plates is enhanced, local damage is avoided, the reinforcing meshes and concrete materials of the retaining wall plates form advantage complementation, first protruding blocks can be accurately embedded into second protruding blocks of the adjacent retaining wall plates, and the retaining wall structure is convenient to use. The vertical and horizontal displacement of the retaining wall plates is precisely positioned and limited, the trapezoidal blocks are tightly matched with the trapezoidal grooves, the bevel edges are decomposed to resist shearing force, finally the fixing shafts are screwed into the connecting grooves, the adjacent retaining wall plates are fastened through mechanical force, firm connection and stable protection are ensured, therefore, lateral pressure applied by soil bodies under complex geological conditions can be borne, and a construction site is safer.

Description

Technical Field

[0001] This utility model relates to the technical field of building engineering, and in particular to a retaining wall structure for foundation pit slope. Background Technology

[0002] A foundation pit is an earthen pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. Before excavation, the excavation plan should be determined based on geological and hydrological data and the situation of nearby buildings, and waterproofing and drainage work should be carried out. For shallow excavations, slope protection can be used to stabilize the soil slope, and the slope should be determined according to relevant construction regulations. For deeper excavations or those near buildings, foundation pit wall support methods, shotcrete wall protection methods, and even large foundation pits may use methods such as underground continuous walls and interlocking column-type bored piles to prevent the collapse of the outer soil layer. For those without the influence of nearby buildings, the well point method can be used to lower the groundwater level and open excavation with slope protection can be adopted. In cold regions, natural cold air freezing methods can be used for excavation, etc. In the construction process of various building projects, foundation pit excavation is a common foundation construction procedure. Therefore, a foundation pit slope retaining wall structure is particularly needed.

[0003] However, the existing retaining wall structure has a relatively simple structural design and insufficient strength. It is difficult to withstand the huge lateral pressure exerted by the soil under complex geological conditions, which may lead to cracking, deformation or even collapse of the wall, posing safety hazards to the construction site. Utility Model Content

[0004] The purpose of this utility model is to provide a retaining wall structure for foundation pit slopes, in order to solve the problems mentioned in the background art, such as the simple structural design of existing retaining wall structures, insufficient strength of the retaining wall itself, difficulty in withstanding the huge lateral pressure exerted by the soil under complex geological conditions, and the occurrence of wall cracking, deformation or even collapse, which brings safety hazards to the construction site.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a retaining wall structure for a foundation pit slope, comprising a foundation, a retaining wall mechanism provided on the upper surface of the foundation, and a reinforcement mechanism provided on one side surface of the retaining wall mechanism;

[0006] The retaining wall mechanism includes a retaining wall plate, an intermediate plate, a steel mesh, a first protrusion, a second protrusion, a trapezoidal groove, a trapezoidal block, a connecting plate, and a fixed shaft. The retaining wall plate is connected to the upper surface of the foundation. The intermediate plate is fixedly connected to the inner surface of the retaining wall plate. The steel mesh is fixedly connected to the inner surface of the retaining wall plate. The first protrusion is fixedly connected to one side surface of the retaining wall plate. The second protrusion is fixedly connected to the other side surface of the retaining wall plate. A trapezoidal groove is formed on one side surface of the retaining wall plate. A trapezoidal block is slidably connected to the inner surface of the trapezoidal groove. A connecting plate is fixedly connected to one side surface of the trapezoidal block. A fixed shaft is threadedly connected to one side surface of the connecting plate.

[0007] Preferably, the retaining wall panel is provided in multiple sets on the surface of the foundation, and the steel mesh is arranged symmetrically about the central axis of the intermediate panel.

[0008] Preferably, multiple sets of the first and second protrusions are provided on one side surface of the retaining wall plate, and the first and second protrusions correspond to each other.

[0009] Preferably, the inner dimensions of the trapezoidal groove match the outer dimensions of the trapezoidal block, and the trapezoidal block is symmetrically arranged about the central axis of the connecting plate.

[0010] Preferably, multiple sets of fixed shafts are provided on the surface of the connecting plate, and the surface of the retaining wall plate is provided with connecting grooves.

[0011] Preferably, the reinforcement mechanism includes anchor bolts, a filter layer, a reinforcement plate, a drainage trough, and a drainage pipe. An anchor bolt is fixedly connected to one side surface of the retaining wall plate, a filter layer is fixedly connected to one side surface of the retaining wall plate, a reinforcement plate is fixedly connected to one side surface of the filter layer, a drainage trough is formed on the inner surface of the retaining wall plate, and a drainage pipe is fixedly connected to the surface of the drainage trough.

[0012] Preferably, multiple sets of anchor bolts are provided on one side surface of the retaining wall plate, and multiple sets of drainage pipes are provided on the inner surface of the retaining wall plate.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This foundation pit slope retaining wall structure, through the setting of the retaining wall mechanism, uses precast retaining wall panels, which are manufactured in the factory and transported to the construction site. An intermediate plate is installed inside the retaining wall panels to evenly distribute lateral pressure, enhance its rigidity, and prevent localized damage. The steel mesh and the concrete material of the retaining wall panel complement each other. Concrete excels in compressive strength, and when the wall is subjected to lateral pressure, the steel mesh restrains the concrete deformation as it tends to deform under pressure. The close cooperation between the two greatly enhances the strength and deformation resistance of the retaining wall panel under external forces, effectively preventing cracking. The joint is created by placing the first and second protrusions on both sides of the retaining wall panel. The first protrusion can be precisely embedded into the second protrusion of the adjacent retaining wall panel, accurately positioning and restricting the longitudinal and lateral displacement of the retaining wall panel, thus enhancing the overall integrity of the retaining wall. When the trapezoidal groove and the trapezoidal block are spliced ​​together, the trapezoidal block and the trapezoidal groove fit tightly together, and the inclined side decomposes to resist the shear force, preventing the adjacent panels from shifting and ensuring a stable connection. At the same time, it connects two adjacent retaining wall panels, making the retaining wall panel more stable. Finally, the fixing shaft is screwed into the connecting groove, and the adjacent retaining wall panels are tightened by mechanical force to ensure a firm connection and stable protection. This allows it to withstand the lateral pressure exerted by the soil under complex geological conditions, making the construction site safer. Attached Figure Description

[0014] Figure 1 This is a side view of the appearance structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the retaining wall mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the retaining wall panel and anchor rod of this utility model.

[0017] Figure 4 This is a schematic diagram of the interlocking structure of the reinforcement mechanism of this utility model.

[0018] In the diagram: 1. Foundation; 2. Retaining wall mechanism; 201. Retaining wall plate; 202. Intermediate plate; 203. Steel mesh; 204. First protrusion; 205. Second protrusion; 206. Trapezoidal groove; 207. Trapezoidal block; 208. Connecting plate; 209. Fixed shaft; 3. Reinforcing mechanism; 301. Anchor bolt; 302. Filter layer; 303. Reinforcing plate; 304. Drainage channel; 305. Drainage pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a retaining wall structure for a foundation pit slope, including a foundation 1, a retaining wall mechanism 2 provided on the upper surface of the foundation 1, and a reinforcement mechanism 3 provided on one side surface of the retaining wall mechanism 2;

[0021] The retaining wall mechanism 2 includes a retaining wall plate 201, an intermediate plate 202, a steel mesh 203, a first protrusion 204, a second protrusion 205, a trapezoidal groove 206, a trapezoidal block 207, a connecting plate 208, and a fixed shaft 209. The retaining wall plate 201 is connected to the upper surface of the foundation 1. The intermediate plate 202 is fixedly connected to the inner surface of the retaining wall plate 201. The steel mesh 203 is fixedly connected to the inner surface of the retaining wall plate 201. The first protrusion 204 is fixedly connected to one side of the retaining wall plate 201, and the second protrusion 205 is fixedly connected to the other side of the retaining wall plate 201. A trapezoidal groove 206 is provided on the side surface. A trapezoidal block 207 is slidably connected to the inner surface of the trapezoidal groove 206. A connecting plate 208 is fixedly connected to one side surface of the trapezoidal block 207. A fixing shaft 209 is threadedly connected to one side surface of the connecting plate 208. Through the arrangement of the retaining wall plate 201, the intermediate plate 202, the steel mesh 203, the first protrusion 204, the second protrusion 205, the trapezoidal groove 206, the trapezoidal block 207, the connecting plate 208, and the fixing shaft 209, in use, the retaining wall plate 201 is a precast plate, which is manufactured in the factory and transported to the construction site. The intermediate plate 202 is installed on the retaining wall. The inner side of the retaining wall 201 evenly distributes lateral pressure, enhancing its rigidity and preventing localized damage. The steel mesh 203 and the concrete material of the retaining wall 201 complement each other. Concrete excels at resisting compression, and when the wall is subjected to lateral pressure, the steel mesh 203 restrains the concrete deformation when it tends to deform under pressure. The two work closely together, greatly improving the strength and deformation resistance of the retaining wall 201 under external forces, effectively preventing cracks. The first protrusion 204 and the second protrusion 205 are respectively placed on both sides of the retaining wall 201. The first protrusion 204 can be precisely embedded into the first protrusion of the adjacent retaining wall 201. The two protrusions 205 precisely position and limit the longitudinal and lateral displacement of the retaining wall panel 201, enhancing the overall integrity of the retaining wall. When the trapezoidal groove 206 and the trapezoidal block 207 are spliced ​​together, the trapezoidal block 207 and the trapezoidal groove 206 fit tightly together, and the inclined side decomposes to resist shear force, prevent adjacent panels from shifting, and ensure a stable connection. At the same time, it connects two adjacent retaining wall panels 201, making the retaining wall panel 201 more stable. Finally, the fixing shaft 209 is screwed into the connecting groove to tighten the adjacent retaining wall panels 201 with mechanical force, ensuring a firm connection and stable protection. This enables it to withstand the lateral pressure exerted by the soil under complex geological conditions, making the construction site safer.

[0022] Furthermore, the retaining wall panel 201 has multiple sets of steel mesh 203 on the surface of the foundation 1. The steel mesh 203 is symmetrically arranged around the central axis of the intermediate plate 202. Through the arrangement of the steel mesh 203, during use, the steel mesh 203, with its excellent tensile strength, complements the concrete, greatly improving the strength and deformation resistance of the retaining wall panel 201 when subjected to external forces, effectively preventing cracks from forming on the wall, thereby ensuring that the entire retaining wall can still maintain structural stability under long-term lateral earth pressure.

[0023] Furthermore, multiple sets of the first protrusion 204 and the second protrusion 205 are provided on one side surface of the retaining wall plate 201. The first protrusion 204 and the second protrusion 205 correspond to each other. Through the arrangement of the first protrusion 204 and the second protrusion 205, when adjacent retaining wall plates 201 are spliced ​​and assembled during use, the first protrusion 204 can be accurately embedded in the second protrusion 205 of the adjacent retaining wall plate 201, realizing the rapid and accurate positioning of the adjacent retaining wall plates 201, making the splicing process efficient and accurate, and avoiding deviation of the overall structure of the retaining wall due to the accumulation of splicing errors.

[0024] Furthermore, the inner dimensions of the trapezoidal groove 206 and the outer dimensions of the trapezoidal block 207 are matched. The trapezoidal block 207 is symmetrically arranged around the central axis of the connecting plate 208. Through the arrangement of the trapezoidal groove 206 and the trapezoidal block 207, during use, the trapezoidal block 207 slides into the trapezoidal groove 206, and the two fit together tightly. When the retaining wall is subjected to lateral forces from the soil of the foundation pit slope, the adjacent retaining wall plates 201 are very likely to generate relative misalignment, which can decompose the lateral forces into components along the inclined side, effectively resisting shear forces.

[0025] Furthermore, multiple sets of fixed shafts 209 are provided on the surface of the connecting plate 208, and a connecting groove is provided on the surface of the retaining wall plate 201. With the setting of fixed shafts 209, during use, the threaded ends of multiple sets of fixed shafts 209 are aligned with the pre-set connecting grooves on the retaining wall plate 201. As the fixed shafts 209 are gradually screwed into the connecting grooves, a strong fastening force is generated by the mechanical engagement between the threads, ensuring that the entire retaining wall structure can always be a tight whole, stably and efficiently resisting the continuous lateral pressure exerted by the soil on the slope of the foundation pit.

[0026] Furthermore, the reinforcement mechanism 3 includes anchor bolts 301, a filter layer 302, a reinforcement plate 303, a drainage channel 304, and a drainage pipe 305. An anchor bolt 301 is fixedly connected to one side surface of the retaining wall plate 201, a filter layer 302 is fixedly connected to one side surface of the retaining wall plate 201, and a reinforcement plate 303 is fixedly connected to one side surface of the filter layer 302. A drainage channel 304 is formed on the inner surface of the retaining wall plate 201, and a drainage pipe 305 is fixedly connected to the surface of the drainage channel 304. Through the arrangement of anchor bolts 301, filter layer 302, reinforcement plate 303, drainage channel 304, and drainage pipe 305, during use, the anchor bolts 301 penetrate deep into the stable soil. Through friction with the stable soil and anchoring force, the retaining wall plate 201 is tightly held in place, greatly enhancing the overturning resistance of the retaining wall plate 201. The filter layer 302 consists of multiple layers... The material composition with different particle sizes can effectively prevent soil particles behind the retaining wall 201 from entering the drainage system with the water flow, avoid clogging of the drainage holes, ensure smooth drainage, maintain the structural stability of the soil behind the retaining wall 201, prevent soil collapse caused by water and soil erosion, and ensure that the soil environment around the retaining wall is in a relatively stable state. The reinforcing plate 303, as an additional protective layer on the side of the retaining wall 201, plays a role in dispersing lateral pressure. Water accumulation behind the wall is a major hidden danger affecting the stability of the retaining wall 201. Water accumulation increases the weight of the soil, increases lateral pressure, and may also erode the retaining wall 201. The drainage channel 304 and the drainage pipe 305 work together to collect and quickly drain the water behind the wall, reduce the adverse effects of water accumulation on the retaining wall 201, maintain the dry and stable structure of the retaining wall 201, and enhance its ability to resist lateral soil pressure in the long term.

[0027] Furthermore, multiple sets of anchor bolts 301 are provided on one side surface of retaining wall plate 201, and multiple sets of drainage pipes 305 are provided on the inner surface of retaining wall plate 201. Through the installation of drainage pipes 305, during use, drainage pipes 305 can collect and quickly discharge water behind the wall in a timely manner, reduce the adverse effects of water accumulation on retaining wall plate 201, maintain the dryness and stability of retaining wall plate 201, and enhance its ability to resist lateral earth pressure in the long term.

[0028] Working principle: The retaining wall panel 201 is a precast panel, manufactured in the factory and transported to the construction site. The intermediate panel 202 is installed inside the retaining wall panel 201 to evenly distribute lateral pressure, enhance its rigidity, and prevent localized damage. The steel mesh 203 and the concrete material of the retaining wall panel 201 complement each other. Concrete is good at resisting compression, and when the wall is subjected to lateral pressure, the steel mesh 203 restrains the deformation of the concrete. The two work closely together to greatly improve the strength and deformation resistance of the retaining wall panel 201 under external forces, effectively preventing cracks. The first protrusion 204... The first protrusion 204 and the second protrusion 205 are respectively placed on both sides of the retaining wall plate 201. The first protrusion 204 can be precisely embedded into the second protrusion 205 of the adjacent retaining wall plate 201, accurately positioning and restricting the longitudinal and lateral displacement of the retaining wall plate 201, enhancing the overall integrity of the retaining wall. When the trapezoidal groove 206 and the trapezoidal block 207 are spliced, the trapezoidal block 207 and the trapezoidal groove 206 fit tightly together, and the inclined side decomposes to resist shear force, prevent the adjacent plates from shifting, and firmly connect them. At the same time, it connects two adjacent retaining wall plates 201, making the retaining wall plate 201 more stable. Finally, the fixing shaft 209 is screwed into the connecting groove to mechanically fasten the adjacent retaining wall plates 201, ensuring The connection is firm and provides stable protection, enabling it to withstand the lateral pressure exerted by the soil under complex geological conditions, making the construction site safer. Anchor bolts 301 penetrate deeply into the stable soil, using friction and anchoring force to firmly hold the retaining wall 201 in place, greatly enhancing its anti-overturning ability. The filter layer 302, composed of multiple layers of materials with different particle sizes, effectively prevents soil particles behind the retaining wall 201 from entering the drainage system with the water flow, avoiding blockage of drainage holes, ensuring smooth drainage, and maintaining the structural stability of the soil behind the retaining wall 201, preventing damage due to soil erosion. To prevent soil collapse, the reinforcement plate 303 serves as an additional protective layer on the side of the retaining wall 201, dispersing lateral pressure. Water accumulation behind the wall is a major hidden danger affecting the stability of the retaining wall 201. Water accumulation increases the weight of the soil, increases lateral pressure, and may also erode the retaining wall 201. The drainage channel 304 and drainage pipe 305 work together to collect and quickly drain the water behind the wall, reducing the adverse effects of water accumulation on the retaining wall 201, maintaining the dry and stable structure of the retaining wall 201, and enhancing its ability to resist lateral soil pressure in the long term.

[0029] 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 foundation pit slope retaining wall structure comprising a foundation (1), characterized in that: The upper surface of the foundation (1) is provided with a retaining wall mechanism (2), one side surface of the retaining wall mechanism (2) is provided with a reinforcing mechanism (3); The retaining wall mechanism (2) comprises a retaining wall plate (201), an intermediate plate (202), a steel mesh (203), a first protrusion (204), a second protrusion (205), a trapezoidal groove (206), a trapezoidal block (207), a connecting plate (208) and a fixed shaft (209), the upper surface of the foundation (1) is connected with the retaining wall plate (201), the inner side surface of the retaining wall plate (201) is fixedly connected with the intermediate plate (202), the inner side surface of the retaining wall plate (201) is fixedly connected with the steel mesh (203), one side surface of the retaining wall plate (201) is fixedly connected with the first protrusion (204), the other side surface of the retaining wall plate (201) is fixedly connected with the second protrusion (205), one side surface of the retaining wall plate (201) is provided with the trapezoidal groove (206), the inner side surface of the trapezoidal groove (206) is slidably connected with the trapezoidal block (207), one side surface of the trapezoidal block (207) is fixedly connected with the connecting plate (208), and one side surface of the connecting plate (208) is threadedly connected with the fixed shaft (209).

2. The retaining wall structure of claim 1, wherein: A plurality of groups of the retaining wall plate (201) are arranged on the surface of the foundation (1), and the steel mesh (203) is symmetrically arranged about the central axis of the intermediate plate (202).

3. The retaining wall structure of claim 1, wherein: A plurality of groups of the first protrusion (204) and the second protrusion (205) are arranged on one side surface of the retaining wall plate (201), and the first protrusion (204) and the second protrusion (205) correspond to each other.

4. The retaining wall structure of claim 1, wherein: The inner side dimension of the trapezoidal groove (206) and the outer side dimension of the trapezoidal block (207) are matched, and the trapezoidal block (207) is symmetrically arranged about the central axis of the connecting plate (208).

5. The retaining wall structure of claim 1, wherein: A plurality of groups of the fixed shaft (209) are arranged on the surface of the connecting plate (208), and the surface of the retaining wall plate (201) is provided with a connecting groove.

6. The retaining wall structure of claim 1, wherein: The reinforcing mechanism (3) comprises an anchor rod (301), a filter layer (302), a reinforcing plate (303), a drainage groove (304) and a drainage pipe (305), one side surface of the retaining wall plate (201) is fixedly connected with the anchor rod (301), one side surface of the retaining wall plate (201) is fixedly connected with the filter layer (302), one side surface of the filter layer (302) is fixedly connected with the reinforcing plate (303), the inner side surface of the retaining wall plate (201) is provided with the drainage groove (304), and the surface of the drainage groove (304) is fixedly connected with the drainage pipe (305).

7. The retaining wall structure of claim 6, wherein: A plurality of groups of the anchor rod (301) are arranged on one side surface of the retaining wall plate (201), and a plurality of groups of the drainage pipe (305) are arranged on the inner side surface of the retaining wall plate (201).

Images