An assembled support structure for a foundation pit

Abstract

The utility model discloses a kind of fabricated support structure of foundation pit, belong to foundation pit engineering technical field, to the problems, such as complex connection node, low installation efficiency generally existing in foundation pit support structure, in addition, the modular degree of existing support structure is insufficient, different foundation pit size and shape demand are difficult to meet, including platform, the middle part of the platform is equipped with foundation pit, the inner surface of the foundation pit is equipped with positioning recess, and coincide sliding connection has prefabricated part, and the lower end edge of the foundation pit is equipped with a plurality of positioning assembly, the positioning assembly all includes positioning column, fixed block and ground nail, the middle part of the four sides of the positioning column all is equipped with connecting groove, adjacent the connecting groove all slidingly connect in the both ends of a plurality of sliding plates, and the sliding plate all is equipped with a plurality of fixed components;The utility model has the advantages of quick assembly, flexible adjustment, stable support and recyclable, applicable to various foundation pit engineering, with significant practicality and economic value.

Description

Technical Field

[0001] This invention belongs to the field of foundation pit engineering technology, specifically relating to a prefabricated support structure for foundation pits. Background Technology

[0002] With the rapid development of urban underground space, the importance of foundation pit engineering in building construction is becoming increasingly prominent. Traditional foundation pit support structures mostly adopt on-site casting or welding methods, which have problems such as long construction cycles, large material waste, and serious environmental pollution. At the same time, traditional support structures are difficult to disassemble and reuse, increasing project costs. To overcome these shortcomings, prefabricated support structures have emerged, but they still face challenges in practical applications, such as insufficient connection stability, poor adaptability, and difficulty in ensuring installation accuracy.

[0003] In existing technologies, prefabricated foundation pit support structures generally employ bolted or plug-in connections, which suffer from complex connection nodes and low installation efficiency. Especially under complex geological conditions, traditional prefabricated structures struggle to achieve rapid adjustment and precise positioning, impacting construction quality and safety. Furthermore, the insufficient modularity of existing support structures makes it difficult to meet the needs of different foundation pit sizes and shapes, hindering the widespread application of prefabricated technology.

[0004] To address the aforementioned issues, a novel prefabricated foundation pit support structure has been developed. By optimizing the connection method and positioning system, it achieves rapid installation, precise positioning, and stable support, while also improving the structure's adaptability and reusability, thereby promoting the development of foundation pit engineering towards high efficiency, environmental protection, and intelligence. Utility Model Content

[0005] The purpose of this invention is to provide a prefabricated support structure for foundation pits to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated support structure for a foundation pit, comprising a platform, a foundation pit in the middle of the platform, a positioning groove on the inner surface of the foundation pit and a prefabricated component slidably connected thereto, and a plurality of positioning components on the lower edge of the foundation pit, each positioning component comprising a positioning post, a fixing block and a ground nail, a connecting groove in the middle of each of the four sides of the positioning post, adjacent connecting grooves being slidably connected to the two ends of a plurality of sliding plates, and a plurality of fixing components being provided on each of the sliding plates.

[0007] It should be noted in the solution that the platform is provided with a number of first positioning bolts, and the upper middle part of the positioning column is provided with a second positioning bolt. The positioning column and the second positioning bolt can be fixed to each other by a fixing rope.

[0008] It is worth noting that the cross-section of the connecting groove is trapezoidal, and both ends of the sliding plate are trapezoidal, and the inner surface of the connecting groove is respectively fitted to the sliding connection of one end of the corresponding sliding plate.

[0009] Furthermore, it should be noted that the prefabricated component includes several prefabricated walls, connectors, and turning components. Each prefabricated wall has a limiting groove at both ends, and each connector has a first protruding guide fixedly connected to both ends. The first protruding guides can be slidably connected to the corresponding limiting grooves. The middle of the connector is at a 90-degree angle, and a second protruding guide is fixedly connected to the middle of one side of each prefabricated wall. The second protruding guides can be slidably connected to the positioning grooves.

[0010] In a preferred embodiment, each of the fixing components includes a sliding block and a base plate. Each sliding block has a sliding groove in the middle. The sliding groove is rectangular and is slidably connected to the outer surface of the rectangular sliding plate.

[0011] In a preferred embodiment, a fixed shaft is fixedly connected to the middle of one side of the sliding block, a threaded hole is provided in the middle of one side of the fixed shaft and threadedly connected to the outer surface of the threaded shaft, a rotating handle is fixedly connected to the middle of the curved surface of the threaded shaft, and a semi-circular connector is fixedly connected to the other end of the threaded shaft.

[0012] In a preferred embodiment, symmetrical connecting plates are fixedly connected to the middle of both ends of one side of the base plate. The middle of each of the symmetrical connecting plates is fixedly connected to one end of the first fixing post of several limiting components via a bearing-connected shaft connector. A connecting block is fixedly connected to the other end of each of the first fixing posts. Several locking blocks are provided on the outer surface of each connecting block. The connecting block and the locking blocks are all slidably connected to a locking groove provided inside one end of a second fixing post. The other end of each of the second fixing posts is fixedly connected to one side of a sliding block.

[0013] Compared with the prior art, the prefabricated support structure for foundation pits provided by this invention has at least the following beneficial effects:

[0014] (1) This utility model adopts a sliding connection between prefabricated components and positioning grooves, and is quickly fixed with positioning components to realize the modular assembly of the foundation pit support structure. During construction, only the prefabricated walls, connectors and turning parts need to be spliced ​​as needed. Then, by rotating the threaded shaft of the fixing component, the position of the prefabricated components and the base plate is fixed. At this time, through the synergistic action of the limiting components, the different positions of several prefabricated components can be freely adjusted and fixed in sections to ensure structural stability, and significantly reduce on-site pouring and welding operations, shorten the construction period and improve construction efficiency.

[0015] (2) By combining positioning posts with ground nails, the overall structure's resistance to settlement is enhanced; fixing ropes further reinforce the connection between the platform and the support system to prevent displacement. Precast components are precisely fitted into positioning grooves and limiting grooves through the first and second protrusion guides, respectively, reducing stress concentration and improving overall deformation resistance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of this novel invention;

[0017] Figure 2 This is a schematic diagram of the fixing component structure of this novel invention;

[0018] Figure 3 This is a schematic diagram of the prefabricated structure of this novel invention.

[0019] In the diagram: 1. Platform; 2. Foundation pit; 201. Positioning groove; 3. Precast component; 301. Precast wall; 302. Connector; 303. Turning component; 304. First protruding guide; 305. Limiting groove; 306. Second protruding guide; 4. Fixing assembly; 401. Sliding block; 4011. Sliding groove; 402. Fixed shaft; 403. Threaded shaft; 404. Rotating handle; 405. Connector; 406 407. Connecting plate; 408. Shaft connector; 409. Limiting assembly; 4001. First fixing post; 4002. Second fixing post; 4003. Connecting block; 4004. Locking block; 4005. Locking groove; 401. Base plate; 502. Positioning assembly; 503. Positioning post; 504. Connecting groove; 505. Fixing block; 506. Ground nail; 507. Second positioning bolt; 608. First positioning bolt; 709. Fixing rope; 8000. Sliding plate. Detailed Implementation

[0020] The present invention will be further described below with reference to embodiments.

[0021] Please see Figure 1-3 The present invention provides an assembled support structure for a foundation pit, comprising: a platform 1, a foundation pit 2 in the middle of the platform 1, a positioning groove 201 on the inner surface of the foundation pit 2, and a prefabricated component 3 slidably connected thereto, and a plurality of positioning components 5 on the lower edge of the foundation pit 2, each positioning component 5 including a positioning post 501, a fixing block 503 and a ground nail 504, each of the four sides of the positioning post 501 having a connecting groove 502 in the middle, adjacent connecting grooves 502 being slidably connected to both ends of a plurality of sliding plates 8, and each sliding plate 8 having a plurality of fixing components 4.

[0022] Further as Figure 1As shown, it is worth noting that the platform 1 is equipped with several first positioning bolts 6, and the upper middle part of the positioning column 501 is equipped with a second positioning bolt 505. Both the positioning column 501 and the second positioning bolt 505 can be fixed to each other by a fixing rope 7. By using the connection method of the first positioning bolts 6 and the second positioning bolts 505 in conjunction with the fixing rope 7, a quick connection and fixation between the platform 1 and the positioning component 5 is achieved. This connection method is not only simple to operate, but also effectively enhances the stability of the overall structure, prevents displacement or tilting of the supporting structure during construction, and improves construction safety.

[0023] Further as Figure 1 As shown, it is worth noting that the connecting groove 502 has a trapezoidal cross-section, and both ends of the sliding plate 8 are also trapezoidal. The inner surface of the connecting groove 502 is slidably connected to one end of the corresponding sliding plate 8. The trapezoidal cross-section of the connecting groove 502, in conjunction with the trapezoidal ends of the sliding plate 8, achieves precise positioning and a stable connection. This design effectively prevents the connection from loosening or detaching under stress, improving the overall rigidity and load-bearing capacity of the structure, while also facilitating rapid positioning and installation during construction.

[0024] Further as Figure 3 As shown, it is worth noting that the precast component 3 includes several precast wall sections 301, connectors 302, and turning sections 303. Each precast wall section 301 has a limiting groove 305 at both ends, and each connector 302 has a first protruding guide 304 fixedly connected to both ends. The first protruding guides 304 can all be slidably connected to the corresponding limiting grooves 305. The middle of each connector 302 is at a 90-degree angle, and a second protruding guide 306 is fixedly connected to the middle of one side of each precast wall section 301. The second protruding guides 306 can all be slidably connected to the positioning grooves 201. The precast component 3 adopts a modular design, including precast wall sections 301, connectors 302, and turning sections 303. Through the sliding connection between the protruding guides 304 and 306 and the grooves 201 and 305, rapid assembly and precise positioning are achieved. This design greatly improves construction efficiency, reduces on-site adjustment time, and ensures the tightness of the connections and the overall integrity of the structure.

[0025] This solution includes the following work process:

[0026] Pit positioning and platform installation: First, platform 1 is laid in the construction area, and pit 2 is excavated in the middle of it. Positioning grooves 201 are opened on the inner surface of pit 2, and positioning components 5 are installed at the lower edge of the pit. Fixing blocks 503 and positioning columns 501 are fixed to the ground with ground nails 504 to ensure the stability of the overall structure.

[0027] Precast component assembly: The precast wall 301 is slidably installed along the positioning groove 201 via the second protruding guide 306, and a 90-degree connector 302 or turning component 303 is embedded at the corner. The precast wall 301 are interlocked with each other via the first protruding guide 304 and the limiting groove 305 to form a continuous support structure.

[0028] Adjustment of sliding plate and fixing component: Insert both ends of the sliding plate 8 into the connecting grooves 502 of the positioning column 501 to achieve a stable connection using the trapezoidal cross section. Then install the fixing component 4 on the sliding plate 8, and adjust the threaded shaft 403 by rotating the handle 404 to make the sliding block 401 and the bottom plate 409 fit tightly against the side wall of the pit, thereby enhancing the support force.

[0029] Overall reinforcement: The first positioning bolt 6 and the second positioning bolt 505 are connected by a fixing rope 7 to further constrain structural displacement. The locking block 4084 of the limiting component 408 cooperates with the locking groove 4085 to lock, ensuring that the force on each component is uniform and completing the construction of the prefabricated support structure.

[0030] As can be seen from the above working process, by setting the first positioning bolt 6 and the second positioning bolt 505 in conjunction with the fixing rope 7, the platform 1 and the positioning component 5 are quickly connected and fixed. This connection method is not only easy to operate, but also effectively enhances the stability of the overall structure, prevents the supporting structure from shifting or tilting during construction, and improves construction safety. The trapezoidal cross-section connecting groove 502 cooperates with the trapezoidal end of the sliding plate 8 to achieve precise positioning and stable connection of the connection parts. This design can effectively prevent the connection parts from loosening or falling off under stress, improve the overall rigidity and load-bearing capacity of the structure, and facilitate rapid alignment and installation during construction. The precast component 3 adopts a modular design, including precast wall 301, connector 302 and turning component 303. Through the sliding connection of the protruding guides 304, 306 and the grooves 201, 305, rapid assembly and precise positioning are achieved. This design greatly improves construction efficiency, reduces on-site adjustment time, and ensures the tightness of the connection parts and the integrity of the structure.

[0031] Further as Figure 2 As shown, it is worth noting that each fixing component 4 includes a sliding block 401 and a base plate 409. Each sliding block 401 has a rectangular sliding groove 4011 in its center, which is slidably connected to the outer surface of the rectangular sliding plate 8. The fixing component 4 employs a design that combines the sliding block 401 with the base plate 409. Through the sliding connection between the rectangular sliding groove 4011 and the sliding plate 8, rapid installation and position adjustment of the support structure are achieved. This design facilitates fine-tuning during construction, adapts to the needs of different foundation pit sizes and shapes, and improves the flexibility and adaptability of construction.

[0032] Further as Figure 2 As shown, it is worth noting that a fixed shaft 402 is fixedly connected to the middle of one side of the sliding block 401. A threaded hole is provided in the middle of one side of the fixed shaft 402, and it is threadedly connected to the outer surface of the threaded shaft 403. A rotating handle 404 is fixedly connected to the middle of the curved surface of the threaded shaft 403, and a semi-circular connector 405 is fixedly connected to the other end of the threaded shaft 403. Through the design of the threaded shaft 403 and the rotating handle 404, quick locking and fine-tuning of the support structure are achieved. Operators can easily adjust the support force by rotating the handle, ensuring a tight fit between the support structure and the sidewall of the foundation pit, improving the stability and reliability of the support, and simplifying construction operations.

[0033] Further as Figure 2 As shown, it is worth noting that symmetrical connecting plates 406 are fixedly connected to the middle of both ends of one side of the base plate 409. The middle of each symmetrical connecting plate 406 is fixedly connected to one end of a first fixing post 4081 of several limiting components 408 via a bearing-connected shaft connector 407. A connecting block 4083 is fixedly connected to the other end of each first fixing post 4081. Several locking blocks 4084 are provided on the outer surface of each connecting block 4083. The connecting block 4083 and the locking blocks 4084 are all slidably connected to a slot 4085 inside one end of a second fixing post 4082. The other end of each second fixing post 4082 is fixedly connected to one side of a sliding block 401. The limiting components 408, using the cooperation design of locking blocks 4084 and slots 4085, achieve rapid locking and unlocking of the support structure. This design not only ensures the firmness of the connection but also allows for quick disassembly when needed, facilitating reuse and maintenance, and improving construction efficiency and economic benefits.

[0034] In summary: The fixing component 4 employs a sliding block 401 and a base plate 409 in a cooperative design, and achieves rapid installation and position adjustment of the support structure through the sliding connection of the rectangular sliding groove 4011 and the sliding plate 8. This design facilitates fine-tuning during construction, adapts to the needs of different pit sizes and shapes, and improves construction flexibility and adaptability. The threaded shaft 403 and rotating handle 404 enable rapid locking and fine-tuning of the support structure. Operators can easily adjust the support force by rotating the handle, ensuring a tight fit between the support structure and the pit sidewall, improving the stability and reliability of the support, while simplifying construction operations. The limiting component 408 employs a locking block 4084 and a locking groove 4085 in a cooperative design, enabling rapid locking and unlocking of the support structure. This design not only ensures the firmness of the connection points but also allows for quick disassembly when needed, facilitating reuse and maintenance, and improving construction efficiency and economic benefits.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated support structure for a foundation pit, comprising a platform (1), characterized in that: The platform (1) has a foundation pit (2) in the middle. The inner surface of the foundation pit (2) has a positioning groove (201) and a prefabricated part (3) is slidably connected to it. The lower edge of the foundation pit (2) is provided with several positioning components (5). Each positioning component (5) includes a positioning post (501), a fixing block (503) and a ground nail (504). The positioning post (501) has a connecting groove (502) in the middle of its four sides. Adjacent connecting grooves (502) are slidably connected to both ends of several sliding plates (8). Several fixing components (4) are provided on each sliding plate (8).

2. The prefabricated support structure for a foundation pit according to claim 1, characterized in that: The platform (1) is provided with a plurality of first positioning bolts (6), and the middle of the upper end of the positioning column (501) is provided with a second positioning bolt (505). The positioning column (501) and the second positioning bolt (505) can be fixed to each other by a fixing rope (7).

3. The prefabricated support structure for a foundation pit according to claim 1, characterized in that: The connecting groove (502) has a trapezoidal cross section, and both ends of the sliding plate (8) are trapezoidal. The inner surface of the connecting groove (502) is respectively fitted and slidably connected to one end of the corresponding sliding plate (8).

4. The prefabricated support structure for a foundation pit according to claim 1, characterized in that: The precast component (3) includes several precast walls (301), connectors (302) and turning components (303). Both ends of the precast wall (301) are provided with limiting grooves (305), and both ends of the connectors (302) are fixedly connected with first protruding guides (304). The first protruding guides (304) can be slidably connected to the corresponding limiting grooves (305). The middle part of the connector (302) is at a 90-degree angle, and the middle part of one side of the precast wall (301) is fixedly connected with a second protruding guide (306). The second protruding guides (306) can be slidably connected to the positioning grooves (201).

5. The prefabricated support structure for a foundation pit according to claim 1, characterized in that: Each of the fixed components (4) includes a sliding block (401) and a base plate (409). Each sliding block (401) has a sliding groove (4011) in the middle. The sliding groove (4011) is rectangular and is slidably connected to the outer surface of the rectangular sliding plate (8).

6. The prefabricated support structure for a foundation pit according to claim 5, characterized in that: A fixed shaft (402) is fixedly connected to the middle of one side of the sliding block (401). A threaded hole is provided in the middle of one side of the fixed shaft (402) and is threaded to the outer surface of the threaded shaft (403). A rotating handle (404) is fixedly connected to the middle of the curved surface of the threaded shaft (403), and a semi-circular connector (405) is fixedly connected to the other end of the threaded shaft (403).

7. The prefabricated support structure for a foundation pit according to claim 5, characterized in that: The base plate (409) has symmetrical connecting plates (406) fixedly connected to the middle of both ends on one side. The middle of each of the symmetrical connecting plates (406) is fixedly connected to one end of the first fixing post (4081) of several limiting components (408) by a shaft connector (407) connected by a bearing. The other end of each of the first fixing posts (4081) is fixedly connected to a connecting block (4083). The outer surface of the connecting block (4083) is provided with several locking blocks (4084). The connecting block (4083) and the several locking blocks (4084) are all slidably connected to the locking groove (4085) provided inside one end of the second fixing post (4082). The other end of each of the second fixing posts (4082) is fixedly connected to one side of the sliding block (401).

Images