A multi-line three-dimensional intersecting irregular deep foundation pit support structure

Abstract

This utility model relates to the field of building construction technology and discloses a multi-line three-dimensional intersecting irregular deep foundation pit support structure, including a main beam. A modular plate is fixedly connected to the outside of the main beam. A positioning component is installed inside one side of the modular plate, and a positioning plate is installed inside the modular plate. A protective plate is fixedly connected to the lower surface of the positioning plate. A sliding column is installed inside a spring. One end of the sliding column is fixedly connected to a positioning column, and the other end of the positioning column is fixedly connected to a pull ring. A push ring is fixedly connected to the outside of the end of the sliding column away from the pull ring. In this utility model, pulling the pull ring causes the sliding column to slide, simultaneously compressing the spring, causing the positioning column to extend into the interior of the modular plate. After the positioning plate is inserted into the modular plate, the spring rebounds, pushing the positioning column into the positioning hole. This achieves the effect of facilitating quick installation by operators and improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a multi-line three-dimensional intersecting irregular deep foundation pit support structure. Background Technology

[0002] With the acceleration of urbanization, the development and utilization of underground space is increasing. Deep foundation pit engineering plays an important role in urban construction. In the core construction of the plan, many irregular open-cut foundation pits are inevitable. The foundation pit support structure forms a three-dimensional network bearing system through the cross arrangement of multi-dimensional support structures, which can effectively disperse soil stress and suppress the risk of slippage between different soil layers.

[0003] A search revealed Chinese patent publication number CN207452911U, which discloses a multi-line, three-dimensional, intersecting, irregularly shaped deep foundation pit support structure. This structure includes a foundation pit with an underground main structure, where multiple main structures are staggered vertically or horizontally within the pit. The foundation pit comprises a large upper pit and a smaller lower pit. Retaining walls are installed on both sides of the large pit, with capping beams at the top. A retaining wall is installed on one side of the smaller pit, sharing the same wall as the larger pit, while the other side features a steel-sprayed anchor combination retaining wall. Concrete slab supports are installed at the top of the smaller pit. Vertically layered concrete or steel supports are installed within the pit. This design provides ample space for earthwork excavation and underground structure construction, reducing issues such as pit-within-pit deviated holes and encroachment on retaining lines in hard rock strata, and effectively retaining soil and water. The slab supports between the upper main structure and the retaining walls provide excellent stress transfer, ensuring the safety of the foundation pit.

[0004] In the aforementioned application, the existing technology in multi-line three-dimensional intersecting irregular deep foundation pits has the disadvantages of low construction efficiency and high cost of support structure, and the inability to easily disassemble the support structure, which leads to extended construction period and affects the overall progress. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-line three-dimensional intersecting irregular deep foundation pit support structure, which aims to improve the problem of low construction efficiency of the support structure in the prior art, resulting in a prolonged construction period.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-line three-dimensional intersecting irregular deep foundation pit support structure, including a main beam, a module plate fixedly connected to the outside of the main beam, a positioning component provided inside one side of the module plate, a positioning plate provided inside the module plate, a connecting component provided in the middle of the module plate, and a protective plate fixedly connected to the lower surface of the positioning plate.

[0007] The above technical solution involves fixing a modular plate to the outside of the main beam, setting a positioning component on one side of the modular plate, setting a positioning plate inside, and setting a connecting component in the middle. The positioning plate is connected to the guard plate to form a modular support structure, which can realize the rapid installation and fixing of the positioning plate and the guard plate.

[0008] As a further description of the above technical solution: The positioning component includes a spring, the outside of which is disposed inside one end of the module plate. A sliding post is disposed inside the spring. A positioning post is fixedly connected to one end of the sliding post. A pull ring is fixedly connected to the other end of the positioning post. A push ring is fixedly connected to the outside of the end of the sliding post away from the pull ring. The push ring is disposed outside one end of the spring.

[0009] The above technical solution involves a sliding post inserted into a spring and connected to a positioning post and a push ring. A pull ring is fixed to the other end of the positioning post. The sliding post is moved by controlling the push ring, thereby enabling the positioning post to quickly engage or disengage from the positioning hole.

[0010] As a further description of the above technical solution: The positioning plate has a positioning hole inside, and the positioning post is externally engaged with the inside of the positioning hole.

[0011] Through the above technical solution: after the positioning post is inserted into the positioning hole, the displacement of the positioning plate in the module plate can be restricted, thereby achieving lateral fixation between the positioning plate and the module plate and providing a stable support point for the installation of the protective plate.

[0012] As a further description of the above technical solution: The connecting assembly includes a connecting plate, the lower surface of which is fixedly connected to the upper surface of the protective plate. A connecting groove is provided in the middle of the module plate, and the outside of the connecting plate is snapped into the inside of the connecting groove.

[0013] The above technical solution involves fixing the connecting plate to the protective plate and inserting it into the connecting groove of the module plate, forming a vertical connection between the protective plate and the module plate. This allows for quick positioning and connection of the protective plate, enhancing the overall integrity of the connection between the protective plate and the module plate.

[0014] As a further description of the above technical solution: The main beam is internally fixedly connected with cross columns, a secondary beam is provided on one side of the main beam, and a support assembly is provided on the outside of the main beam.

[0015] The above technical solution involves: setting up cross columns inside the main beam and setting up secondary beams on one side with supporting components to form a multi-line three-dimensional support skeleton. The supporting components connect the main beam and the secondary beams to jointly construct a multi-dimensional load-bearing system and improve the spatial stiffness of the foundation pit support structure.

[0016] As a further description of the above technical solution: The support assembly includes a node plate, which is externally fixed to the outside of the main beam. The node plate is internally threaded with high-strength bolts. The secondary beam is externally provided with a diagonal brace. Threaded holes are provided inside the node plate, the secondary beam, and the diagonal brace.

[0017] The above technical solution involves fixing the node plate to the main beam, connecting the node plate, secondary beam, and diagonal brace through threaded holes, and forming diagonal support by engaging the threaded holes and bolts, which enhances the deformation resistance at the intersection.

[0018] As a further description of the above technical solution: The external thread of the high-strength bolt is connected to the inner wall of the threaded hole.

[0019] Through the above technical solution, the threaded hole serves to support the threaded fixing of the high-strength bolt.

[0020] As a further description of the above technical solution: The push ring is externally slidably connected to the inside of the module plate.

[0021] Through the above technical solution: the push ring drives the spring to contract through the pull ring, while the module plate supports the push ring to slide inside the module plate.

[0022] This utility model has the following beneficial effects: 1. In this utility model, pulling the pull ring causes the sliding column to slide, while compressing the spring, so that the positioning column extends into the interior of the module plate. After the positioning plate is inserted into the module plate, the spring rebounds and pushes the positioning column into the positioning hole. The connecting plate is vertically inserted into the connecting groove. The quick connection between the guard plate and the module plate is achieved through snap-fit, thereby facilitating quick installation by operators and improving construction efficiency.

[0023] 2. In this utility model, the main beam, secondary beam, and diagonal bracing plate are installed and fixed by high-strength bolts and node plates through threaded connections with threaded holes. The diagonal bracing plate enhances the stability of the intersection area and forms an overall support system, thereby improving the stability of the overall main frame and reducing stress concentration. Attached Figure Description

[0024] Figure 1 This is a perspective view of a multi-line three-dimensional intersecting irregular deep foundation pit support structure proposed in this utility model; Figure 2 This is a partial structural diagram of a modular plate for a multi-line three-dimensional intersecting irregular deep foundation pit support structure proposed in this utility model; Figure 3 This is a partial structural diagram of the positioning column of a multi-line three-dimensional intersecting irregular deep foundation pit support structure proposed in this utility model; Figure 4 This is a partial structural diagram of the secondary beam of a multi-line three-dimensional intersecting irregular deep foundation pit support structure proposed in this utility model.

[0025] Legend: 1. Main beam; 2. Module plate; 3. Positioning assembly; 301. Spring; 302. Sliding column; 303. Positioning column; 304. Push ring; 305. Pull ring; 4. Positioning plate; 5. Positioning hole; 6. Connecting assembly; 601. Connecting plate; 602. Connecting groove; 7. Guard plate; 8. Cross column; 9. Secondary beam; 10. Support assembly; 101. Node plate; 102. High-strength bolt; 103. Diagonal brace plate; 104. Threaded hole. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1-3 An embodiment of this utility model is provided: a multi-line three-dimensional intersecting irregular deep foundation pit support structure, including a main beam 1, a module plate 2 fixedly connected to the outside of the main beam 1, a positioning component 3 provided inside one side of the module plate 2, a positioning plate 4 provided inside the module plate 2, a connecting component 6 provided in the middle of the module plate 2, and a protective plate 7 fixedly connected to the lower surface of the positioning plate 4. Specifically, the main beam 1 is used to bear the main earth pressure and form the outer boundary of the support system; the module plate 2 is used to support the positioning component 3; the positioning component 3 is used to fix the positioning plate 4; the positioning plate 4 is used to fix the guard plate 7; the connecting component 6 is used to connect the module plate 2 and the guard plate 7; the guard plate 7 is used to support the side wall of the foundation pit.

[0028] Reference Figures 2-4 The positioning component 3 includes a spring 301, the outside of which is disposed inside one end of the module plate 2. A sliding post 302 is disposed inside the spring 301. A positioning post 303 is fixedly connected to one end of the sliding post 302. A pull ring 305 is fixedly connected to the other end of the positioning post 303. A push ring 304 is fixedly connected to the outside of the end of the sliding post 302 away from the pull ring 305. The outside of the push ring 304 is disposed at one end of the spring 301. A positioning hole 5 is opened inside the positioning plate 4. The outside of the positioning post 303 is snapped into the inside of the positioning hole 5. The connecting component 6 includes a connecting plate 601. The lower surface of the connecting plate 601 is fixedly connected to the upper surface of the guard plate 7. A connecting groove 602 is opened in the middle of the module plate 2. The outside of the connecting plate 601 is snapped into the inside of the connecting groove 602. Specifically, spring 301 provides elastic force to maintain the positioning post 303 in the state of being engaged inside the positioning hole 5. Sliding post 302 is used to drive the positioning post 303 to slide. The positioning post 303 is engaged in the positioning hole 5 to fix the positioning plate 4. Pull ring 305 drives the sliding post 302 to slide. Push ring 304 is used to drive spring 301 to retract. Connecting plate 601 and connecting groove 602 are engaged to connect module plate 2 and guard plate 7, thereby achieving the effect of facilitating quick installation by operators and simplifying the installation process.

[0029] Reference Figures 2-4 The main beam 1 is internally fixedly connected with cross columns 8. A secondary beam 9 is provided on one side of the main beam 1. A support assembly 10 is provided on the outside of the main beam 1. The support assembly 10 includes a node plate 101, which is externally fixedly connected to the outside of the main beam 1. A high-strength bolt 102 is internally threadedly connected to the node plate 101. A diagonal brace 103 is provided on the outside of the secondary beam 9. Threaded holes 104 are opened inside the node plate 101, the secondary beam 9, and the diagonal brace 103. The high-strength bolt 102 is externally threadedly connected to the inner wall of the threaded hole 104. The push ring 304 is externally slidably connected to the inside of the module plate 2. Specifically, the cross columns 8 form the main skeleton of the support structure, directly bearing the soil and water pressure around the pit to prevent the pit wall from collapsing. The secondary beams 9 assist the main beams 1 to increase the overall rigidity and in-plane stability of the support frame. The node plate 101 serves as the main connection between the main beams 1 and the secondary beams 9 and the diagonal bracing plate 103, ensuring the connection strength and rigidity of the nodes. The high-strength bolts 102 provide strong preload to prevent loosening of the connection. The diagonal bracing plate 103 provides strong diagonal support to effectively resist these complex stresses and enhance the stability of the system. The push ring 304 slides within the module plate 2, driving the positioning column 303 to insert and remove from the positioning hole 5. The threaded hole 104 supports the fixing of the high-strength bolts 102, thereby improving the stability of the overall main skeleton.

[0030] Working principle: When a multi-line three-dimensional intersecting irregular deep foundation pit support structure is required, the operator first pulls the pull ring 305 outward to drive the sliding column 302 to slide, while compressing the spring 301, so that the positioning column 303 extends into the interior of the module plate 2. After the positioning plate 4 is inserted into the module plate 2, the pull ring 305 is released, and the spring 301 rebounds to push the positioning column 303 into the positioning hole 5, thus completing the fixation of the module plate 2 and the positioning plate 4. At the same time, the connecting plate 601 is vertically inserted into the connecting groove 602, and the guard plate 7 and the module plate 2 are quickly connected by snap-fit, so as to facilitate the operator to install quickly and improve the construction efficiency. During construction, the main beam 1, secondary beam 9, and diagonal bracing plate 103 are first installed. They are then fixed by high-strength bolts 102 and node plates 101 through threaded holes 104. The diagonal bracing plate 103 enhances the stability of the intersection area, forming an overall support system. This improves the stability of the overall main frame, effectively distributes the load, and reduces stress concentration.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-line three-dimensional intersecting irregular deep foundation pit support structure, comprising a main beam (1), characterized in that: The main beam (1) is fixedly connected to a module plate (2) on the outside. A positioning component (3) is provided inside one side of the module plate (2). A positioning plate (4) is provided inside the module plate (2). A connecting component (6) is provided in the middle of the module plate (2). A guard plate (7) is fixedly connected to the lower surface of the positioning plate (4).

2. The multi-line three-dimensional intersecting irregular deep foundation pit support structure according to claim 1, characterized in that: The positioning component (3) includes a spring (301), the outside of which is disposed inside one end of the module plate (2). A sliding post (302) is disposed inside the spring (301). A positioning post (303) is fixedly connected to one end of the sliding post (302). A pull ring (305) is fixedly connected to the other end of the positioning post (303). A push ring (304) is fixedly connected to the outside of the end of the sliding post (302) away from the pull ring (305). The outside of the push ring (304) is disposed at one end of the spring (301).

3. The multi-line three-dimensional intersecting irregular deep foundation pit support structure according to claim 2, characterized in that: The positioning plate (4) has a positioning hole (5) inside, and the positioning post (303) is externally engaged inside the positioning hole (5).

4. The multi-line three-dimensional intersecting irregular deep foundation pit support structure according to claim 3, characterized in that: The connecting component (6) includes a connecting plate (601), the lower surface of which is fixedly connected to the upper surface of the guard plate (7), and a connecting groove (602) is provided in the middle of the module plate (2), with the outside of the connecting plate (601) snapped into the inside of the connecting groove (602).

5. The multi-line three-dimensional intersecting irregular deep foundation pit support structure according to claim 1, characterized in that: The main beam (1) is internally fixedly connected with cross columns (8), a secondary beam (9) is provided on one side of the main beam (1), and a support assembly (10) is provided on the outside of the main beam (1).

6. The multi-line three-dimensional intersecting irregular deep foundation pit support structure according to claim 5, characterized in that: The support assembly (10) includes a node plate (101), which is fixedly connected to the outside of the main beam (1). The node plate (101) is threaded with high-strength bolts (102). The secondary beam (9) is provided with a diagonal brace plate (103). The node plate (101), the secondary beam (9), and the diagonal brace plate (103) are all provided with threaded holes (104).

7. A multi-line three-dimensional intersecting irregular deep foundation pit support structure according to claim 6, characterized in that: The external thread of the high-strength bolt (102) is connected to the inner wall of the threaded hole (104).

8. The multi-line three-dimensional intersecting irregular deep foundation pit support structure according to claim 2, characterized in that: The push ring (304) is externally slidably connected to the inside of the module plate (2).

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