A collapsible loess area recyclable and reusable assembly type foundation pit supporting system

Abstract

The present application relates to the technical field of fabricated foundation pit support, in particular to a recyclable and reusable fabricated foundation pit support system in collapsible loess area, which comprises a support structure and a foundation pit, and the support structure is arranged on the foundation pit to support the foundation pit; the support structure is combined by a support connecting component and a matching support component, the support connecting component is arranged at the middle position of the matching support component, and the support connecting component is fixed with the matching support component, and the support connecting component is arranged in a ring structure to uniformly bear load, thereby improving the support stability of the matching support component. The support structure is arranged to achieve the purpose of support and protection, wherein the support structure is combined by the support connecting component and the matching support component, the support connecting component can support the center position, thereby better ensuring the stability of the matching support component and better adapting to the topographic structure of the collapsible loess area to achieve the function of foundation pit protection.

Description

Technical Field

[0001] This invention relates to the field of prefabricated foundation pit support technology, specifically a recyclable and reusable prefabricated foundation pit support system for collapsible loess areas. Background Technology

[0002] The prefabricated steel support system for foundation pits mainly consists of steel supports, steel walers, crossbars, V-braces, corbels, hydraulic jacks, tie rods, and nodes. The construction method is on-site assembly. The prefabricated foundation pit system has many advantages: it is recyclable and reusable, environmentally friendly, and can quickly form support rigidity by combining prestressing. It has a shorter construction period and a cost that is more than 30% lower than traditional foundation pits, and has less impact on the surrounding environment during installation and dismantling.

[0003] Collapsible loess refers to soil that undergoes significant additional deformation due to structural damage after immersion in water under the stress of the overlying soil layer or under the combined stress of the overlying soil layer and additional stress. It is a special type of soil. Some miscellaneous fill soils also have collapsibility. Loess widely distributed in parts of Northeast, Northwest, Central and East my country is mostly collapsible.

[0004] Currently, in collapsible loess areas, recyclable and reusable prefabricated foundation pit support systems often cannot effectively protect the foundation pits, posing a risk of collapse at the edges. Therefore, it is necessary to strengthen the protection of the surrounding areas. Summary of the Invention

[0005] To address the problems in the existing technology, the present invention provides a recyclable and reusable prefabricated foundation pit support system for collapsible loess areas.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a recyclable and reusable prefabricated foundation pit support system for collapsible loess areas, including a support structure and a foundation pit, wherein the foundation pit is provided with a support structure, and the foundation pit is supported by the support structure.

[0007] The support structure is composed of a combination of supporting connecting components and cooperating supporting components. The supporting connecting components are located in the middle of the cooperating supporting components and are fixed to each other. The supporting connecting components are arranged in a ring structure to bear the load evenly, thereby improving the support stability performance of the cooperating supporting components.

[0008] Specifically, the supporting connection component includes a first connecting mechanism, a first stabilizing support mechanism, a second connecting mechanism, and a second stabilizing support mechanism. The first connecting mechanism and the second connecting mechanism are fixedly connected. One side of the first connecting mechanism and the second connecting mechanism is fastened by the first stabilizing support mechanism, and the other side of the first connecting mechanism and the second connecting mechanism is fastened and connected by the second stabilizing support mechanism.

[0009] Specifically, the first connecting mechanism includes an arc-shaped guide frame, on which a docking bolt is screwed. The arc-shaped guide frame is also provided with a first protrusion, a second protrusion and a third protrusion. A connecting pile frame is fixedly connected to the second protrusion, and a docking stabilizing rod is fixedly connected to the third protrusion. A connecting end frame is fixedly connected to the side end of the docking stabilizing rod.

[0010] Specifically, the first stabilizing support mechanism includes a first welding frame and a second welding frame. A matching guide rod is fixedly connected to the lower end of the first welding frame, and the lower end of the matching guide rod is fixed to the second welding frame. A stabilizing support rod is fixedly connected to the matching guide rod, and a ring is fixedly connected to the side end of the stabilizing support rod. A supporting connecting rod is fixedly connected to the ring. Through the structural arrangement of the support structure, the purpose of support and protection is achieved. The support structure is configured by combining supporting connecting components and cooperating supporting components. The supporting connecting components can provide support at the center position, thereby better ensuring the stability of the cooperating supporting components. The first connecting mechanism and the second connecting mechanism... The components are fixed together, and the first and second connecting mechanisms are fixedly engaged with the cooperating support components through the first and second stabilizing support mechanisms, respectively, to provide multi-point support and protection for the cooperating support components. The connecting stabilizing rod and connecting end frame provide support and fixation on one side, while the first protrusion cooperates with the first stabilizing support mechanism to provide support and protection on the other side. Furthermore, through the design of the connecting pile frame, it can be directly fixed to the pile body on the ground, ensuring the overall structural stability of the support connecting components. The setting of the support connecting components provides effective protection, reduces the risk of collapse at the edge, and strengthens the protection of the surrounding area.

[0011] Specifically, the supporting component includes a first waler, a supporting unit, and a second waler. The first waler is fixedly pressed against the supporting unit on one side, and the supporting unit is fixedly pressed against the second waler on the other side.

[0012] Specifically, the supporting and mating unit includes a mating frame, which is fixedly connected to the first support beam by fastening bolts. A side waler is fixedly connected to the side end of the mating frame. A second support beam is fixedly connected to the first support beam by a reinforcing frame. A reinforcing column is fixedly connected to the side waler. The lower end of the side waler is fixedly connected to a fourth support beam. A third support beam is fixedly connected to the fourth support beam. A guide groove is fixedly provided at the bottom of the side waler. Through the mating support components, the first and second walers are supported and protected by the supporting and mating unit, ensuring that the first and second walers are embedded into the soil. The mating frame is supported by the first support beam, the reinforcing frame, and the second support beam, and the bottom is supported by the fourth and third support beams, ensuring the stability of the upper and lower positions. The center is reinforced by a reinforcing column, thereby ensuring the stability of the foundation pit and facilitating subsequent construction.

[0013] Specifically, the mating frame is fixedly connected to the first waler, and the first support beam, the second support beam, the third support beam, and the fourth support beam constitute a double-frame support structure, with the central position reinforced by a reinforcing column.

[0014] Specifically, the first welding frame, the second welding frame, and the second support beam are welded and fixed together, the support connecting rod is fixed on the first protrusion, and the lower end of the connecting pile frame is fixed to the pile body by a nut.

[0015] Specifically, the first connecting mechanism and the second connecting mechanism are fastened together by mating bolts, and the mating stabilizing rod is fixedly connected to the first support beam and the fourth support beam.

[0016] Specifically, the reinforcing column and the second support beam are provided with different sizes to allow for support adjustment, and the support connecting parts cooperate with the ring support protection of the support parts.

[0017] The beneficial effects of this invention are:

[0018] First, this invention achieves the purpose of support and protection through the structural design of the support structure. The support structure is composed of supporting connecting components and cooperating supporting components. The supporting connecting components provide support at the central position, thereby better ensuring the stability of the cooperating supporting components. The first connecting mechanism and the second connecting mechanism are docked and fixed, and the first and second connecting mechanisms are fixedly engaged with the cooperating supporting components through the first and second stabilizing support mechanisms, respectively, to provide multi-point support and protection for the cooperating supporting components. The docking stabilizing rod and connecting end frame provide support and fixation on one side, and the first protrusion cooperates with the first stabilizing support mechanism to provide support and protection on the other side. Furthermore, through the design of the connecting pile frame, it can be directly fixed to the piles on the ground, ensuring the overall structural stability of the supporting connecting components. The setting of the supporting connecting components provides effective protection, reduces the risk of collapse at the edges, and strengthens the protection of the surrounding areas.

[0019] Second, this invention utilizes a supporting component, with a supporting unit on the supporting component to support and protect the first and second walers, ensuring that the first and second walers are firmly embedded in the soil. The mating frame is supported by a first support beam, a reinforcing frame, and a second support beam, and the bottom is supported by a fourth support beam and a third support beam, ensuring the stability of the upper and lower positions. Furthermore, the center is reinforced with a reinforcing column, thereby ensuring the stability of the foundation pit and facilitating subsequent construction. Attached Figure Description

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

[0021] Figure 1 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0022] Figure 2 This is a perspective view of the support structure in this invention;

[0023] Figure 3 This is a three-dimensional side view of the support structure in this invention;

[0024] Figure 4 This is a perspective view of the supporting connecting component in this invention;

[0025] Figure 5 This is a perspective view of the first connecting mechanism in this invention;

[0026] Figure 6 This is a perspective view of the first stabilizing support mechanism in this invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the supporting components in this invention;

[0028] Figure 8 This is a perspective view of the supporting and mating unit in this invention.

[0029] In the diagram: 1-Support structure, 2-Foundation pit, 3-Support connecting component, 4-Matching support component, 5-First connecting mechanism, 6-First stabilizing support mechanism, 7-Second connecting mechanism, 8-Second stabilizing support mechanism, 9-Arc-shaped guide frame, 10-Butt bolt, 11-First protrusion, 12-Second protrusion, 13-Connecting pile frame, 14-Third protrusion, 15-Butt stabilizing rod, 16-Connecting end frame, 17-First welding frame, 18-Support connecting rod, 19-Ring sleeve, 20-Stabilizing support rod, 21-Adaptive guide rod, 22-Second welding frame, 23-First waler, 24-Support matching unit, 25-Second waler, 26-Butt fitting frame, 27-Fastening bolt, 28-Side waler, 29-First support beam, 30-Reinforcing frame, 31-Reinforcing column, 32-Second support beam, 33-Third support beam, 34-Drainage channel, 35-Fourth support beam. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0031] The invention will be further described below with reference to the accompanying drawings.

[0032] Example

[0033] like Figure 1-8As shown, the present invention provides a recyclable and reusable prefabricated foundation pit support system for collapsible loess areas, comprising a support structure 1 and a foundation pit 2. The foundation pit 2 is provided with the support structure 1, and the foundation pit 2 is supported by the support structure 1.

[0034] The support structure 1 is composed of a support connecting component 3 and a cooperating support component 4. The support connecting component 3 is located in the middle of the cooperating support component 4 and is fixed to the cooperating support component 4. The support connecting component 3 has a ring structure to bear the load evenly, thereby improving the support stability of the cooperating support component 4. The foundation pit 2 is divided into different sections, and the support structure 1 provides support protection for each section. First, the first connecting mechanism 5 and the second connecting mechanism 7 are positioned and installed. Ground piles are set at designated locations, and the connection piles are used to... The lower end of the frame 13 is fastened to the pile body with bolts to ensure the stability of the first connecting mechanism 5 and the second connecting mechanism 7. Then, the first connecting mechanism 5 and the second connecting mechanism 7 are fixed with butt bolts 10. After that, the first waler 23 and the second waler 25 are placed at the edge of the foundation pit 2. At the same time, the reinforcing column 31 is positioned and installed to ensure the stability of the side walers 28 and the butt-fitting frame 26. Then, the first support beam 29, the reinforcing frame 30, the second support beam 32, the third support beam 33, and the fourth support beam 35 are positioned. The first support beam 29 and the fourth support beam 35 are both fastened to the mating frame 26 by fastening bolts 27. The mating frame 26 is welded and fixed to the first waler 23 and the second waler 25 to ensure stable connection performance, thereby realizing the forming of the mating support component 4. At the same time, a guide groove 34 is provided at the bottom of the mating support component 4 to facilitate subsequent flow guidance. The first welding frame 17, the second welding frame 22 and the second support beam 32 are welded and fixed, and the connecting end frame 16 is also welded and fixed to the fourth support beam 35 to ensure stable connection performance. When the stress in the supporting component 4 is coordinated, it can be transmitted through the first welding frame 17 and the second welding frame 22, and then through the adapter guide rod 21, the stabilizing support rod 20, and the ring sleeve 19 to the supporting connecting rod 18. The stress is then guided to the first protrusion 11 through the supporting connecting rod 18. At this time, the first connecting mechanism 5 and the second connecting mechanism 7 provide support and protection. Meanwhile, the force and fluid on the connecting end frame 16 are transmitted through the docking stabilizing rod 15 and the third protrusion 14, and finally through the connecting pile frame 13 for support and protection, thereby ensuring the stability of the overall structure of the support structure 1 and the foundation pit 2.

[0035] The supporting connection component 3 includes a first connecting mechanism 5, a first stable support mechanism 6, a second connecting mechanism 7, and a second stable support mechanism 8. The first connecting mechanism 5 and the second connecting mechanism 7 are fixedly connected. One side of the first connecting mechanism 5 and the second connecting mechanism 7 is fastened by the first stable support mechanism 6, and the other side of the first connecting mechanism 5 and the second connecting mechanism 7 is fastened by the second stable support mechanism 8.

[0036] The first connecting mechanism 5 includes an arc-shaped guide frame 9, on which a butt bolt 10 is screwed. The arc-shaped guide frame 9 also has a first protrusion 11, a second protrusion 12, and a third protrusion 14. A connecting pile frame 13 is fixedly connected to the second protrusion 12, and a butt stabilizing rod 15 is fixedly connected to the third protrusion 14. A connecting end frame 16 is fixedly connected to the side end of the butt stabilizing rod 15. Through the structural arrangement of the support structure 1, the purpose of support and protection is achieved. The support structure 1 is composed of a supporting connecting component 3 and a cooperating supporting component 4. The supporting connecting component 3 can provide support at the center position, thereby better ensuring the stability of the cooperating supporting component 4. The first connecting mechanism 5, the second... The connecting mechanism 7 is fixed in place, and the first connecting mechanism 5 and the second connecting mechanism 7 are fixedly engaged with the cooperating support component 4 through the first stable support mechanism 6 and the second stable support mechanism 8, respectively, to provide multi-point support and protection for the cooperating support component 4. The connecting stabilizing rod 15 and the connecting end frame 16 provide support and fixation on one side, and the first protrusion 11 cooperates with the first stable support mechanism 6 to provide support and protection on the other side. Furthermore, through the design of the connecting pile frame 13, it can be directly fixed to the pile body on the ground, ensuring the overall structural stability of the supporting connecting component 3. Through the setting of the supporting connecting component 3, effective protection is provided, reducing the risk of collapse at the edge and strengthening the protection of the surrounding area.

[0037] The first stabilizing support mechanism 6 includes a first welding frame 17 and a second welding frame 22. The lower end of the first welding frame 17 is fixedly connected to an adapter guide rod 21, and the lower end of the adapter guide rod 21 is fixed to the second welding frame 22. A stabilizing support rod 20 is fixedly connected to the adapter guide rod 21, and a ring 19 is fixedly connected to the side end of the stabilizing support rod 20. A supporting connecting rod 18 is fixedly connected to the ring 19.

[0038] The supporting component 4 includes a first waler 23, a supporting unit 24, and a second waler 25. The side end of the first waler 23 is fixedly pressed against the supporting unit 24, and the other side of the supporting unit 24 is fixedly pressed against the second waler 25.

[0039] The supporting unit 24 includes a mating frame 26, which is fixedly connected to a first support beam 29 via fastening bolts 27. A side waler 28 is fixedly connected to the side end of the mating frame 26. A second support beam 32 is fixedly connected to the first support beam 29 via a reinforcing frame 30. A reinforcing column 31 is fixedly connected to the side waler 28. The lower end of the side waler 28 is fixedly connected to a fourth support beam 35. A third support beam 33 is fixedly connected to the fourth support beam 35. A guide groove 34 is fixedly provided at the bottom of the side waler 28. The first waler 23 and the second waler 25 are supported and protected by the support unit 24 on the support component 4, ensuring that the first waler 23 and the second waler 25 are embedded into the soil. The mating frame 26 is supported by the first support beam 29, the reinforcing frame 30 and the second support beam 32, and the bottom is supported by the fourth support beam 35 and the third support beam 33 to ensure the stability of the upper and lower positions. The center is reinforced by the reinforcing column 31, thereby ensuring the stability of the foundation pit 2 and facilitating subsequent construction.

[0040] The mating frame 26 is fixedly connected to the first waler 23, and the first support beam 29, the second support beam 32, the third support beam 33, and the fourth support beam 35 form a double frame support structure, with the central position reinforced by the reinforcing column 31.

[0041] The first welding frame 17, the second welding frame 22 and the second support beam 32 are welded and fixed, the support connecting rod 18 is fixed on the first protrusion 11, and the lower end of the connecting pile frame 13 is fixed to the pile body by a nut.

[0042] The first connecting mechanism 5 and the second connecting mechanism 7 are fastened together by connecting bolts 10, and the connecting stabilizing rod 15 is fixedly connected to the first support beam 29 and the fourth support beam 35.

[0043] The reinforcing column 31 and the second support beam 32 are both provided with different sizes to allow for support adjustment. The support connecting component 3 cooperates with the support component 4 to provide ring support protection.

[0044] The working principle is as follows: First, the foundation pit 2 needs to be divided into different sections. Support structure 1 is used to provide support and protection for each section. First, the first connecting mechanism 5 and the second connecting mechanism 7 are positioned and installed. Ground piles are set at designated locations, and the lower end of the connecting pile frame 13 is fastened to the pile body with bolts to ensure the stability of the first connecting mechanism 5 and the second connecting mechanism 7. Then, the first connecting mechanism 5 and the second connecting mechanism 7 are fixed with butt bolts 10. Next, the first waler 23 and the second waler 25 are placed at the edge of the foundation pit 2. Simultaneously, the reinforcing column 31 is positioned and installed to ensure the stability of the side walers 28 and the butt-fitting frame 26. Then, the first support beam 29, the reinforcing frame 30, the second support beam 32, the third support beam 33, and the fourth support beam 35 are positioned. The first support beam 29 and the fourth support beam 35 are both fastened to the butt-fitting frame 26 with fastening bolts 27. The butt-fitting frame 26 is then fastened to the first waler 23. Purlin 23 and second purlin 25 are welded and fixed to ensure connection stability, thereby achieving the forming of the supporting component 4. At the same time, a guide groove 34 is set at the bottom of the supporting component 4 to facilitate subsequent flow. The first welding frame 17, the second welding frame 22 and the second support beam 32 are welded and fixed, and the connecting end frame 16 is also welded and fixed to the fourth support beam 35 to ensure connection stability. At this time, the stress in the supporting component 4 can be transmitted through the first welding frame 17 and the second welding frame 22, through the adapter guide rod 21, the stabilizing support rod 20 and the ring 19 to the support connecting rod 18, and then guided to the first protrusion 11 through the support connecting rod 18. At this time, the first connecting mechanism 5 and the second connecting mechanism 7 provide support and protection. At the same time, the force and fluid on the connecting end frame 16 are transmitted through the docking stabilizing rod 15 and the third protrusion 14, and finally through the connecting pile frame 13 for support and protection, thereby ensuring the stability of the overall structure of the support structure 1 and the foundation pit 2.

[0045] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A recyclable and reusable prefabricated foundation pit support system for collapsible loess areas, characterized in that: It includes a support structure (1) and a foundation pit (2). The foundation pit (2) is provided with a support structure (1), and the foundation pit (2) is supported by the support structure (1). The support structure (1) is configured by a combination of a support connection component (3) and a cooperating support component (4). The support connection component (3) is located in the middle of the cooperating support component (4), and the support connection component (3) is fixed to the cooperating support component (4). The support connection component (3) is arranged in a ring structure to bear the load evenly, thereby improving the support stability of the cooperating support component (4).

2. The prefabricated foundation pit support system for collapsible loess areas according to claim 1, characterized in that: The supporting connection component (3) includes a first connecting mechanism (5), a first stable support mechanism (6), a second connecting mechanism (7), and a second stable support mechanism (8). The first connecting mechanism (5) and the second connecting mechanism (7) are fixedly connected. One side of the first connecting mechanism (5) and the second connecting mechanism (7) is fastened by the first stable support mechanism (6), and the other side of the first connecting mechanism (5) and the second connecting mechanism (7) is fastened by the second stable support mechanism (8).

3. The prefabricated foundation pit support system for collapsible loess areas according to claim 2, characterized in that: The first connecting mechanism (5) includes an arc-shaped guide frame (9), on which a butt bolt (10) is screwed. The arc-shaped guide frame (9) is also provided with a first protrusion (11), a second protrusion (12) and a third protrusion (14). A connecting pile frame (13) is fixedly connected to the second protrusion (12), and a butt stabilizing rod (15) is fixedly connected to the third protrusion (14). A connecting end frame (16) is fixedly connected to the side end of the butt stabilizing rod (15).

4. The prefabricated foundation pit support system for collapsible loess areas according to claim 3, characterized in that: The first stable support mechanism (6) includes a first welding frame (17) and a second welding frame (22). The lower end of the first welding frame (17) is fixedly connected to an adapter guide rod (21). The lower end of the adapter guide rod (21) is fixed to the second welding frame (22). A stable support rod (20) is fixedly connected to the adapter guide rod (21). A ring sleeve (19) is fixedly connected to the side end of the stable support rod (20). A support connecting rod (18) is fixedly connected to the ring sleeve (19).

5. A recyclable and reusable prefabricated foundation pit support system for collapsible loess areas according to claim 4, characterized in that: The supporting component (4) includes a first waler (23), a supporting unit (24), and a second waler (25). The side of the first waler (23) is fixedly pressed against the supporting unit (24), and the other side of the supporting unit (24) is fixedly pressed against the second waler (25).

6. The prefabricated foundation pit support system for collapsible loess areas according to claim 5, characterized in that: The supporting unit (24) includes a mating frame (26), which is fixedly connected to the first support beam (29) by fastening bolts (27). A side waler (28) is fixedly connected to the side end of the mating frame (26). A second support beam (32) is fixedly connected to the first support beam (29) by a reinforcing frame (30). A reinforcing column (31) is fixedly connected to the side waler (28). The lower end of the side waler (28) is fixedly connected to the fourth support beam (35). A third support beam (33) is fixedly connected to the fourth support beam (35). A guide groove (34) is fixedly provided at the bottom of the side waler (28).

7. A recyclable and reusable prefabricated foundation pit support system for collapsible loess areas according to claim 6, characterized in that: The docking and bonding frame (26) is fixedly connected to the first waler (23), and the first support beam (29), the second support beam (32), the third support beam (33), and the fourth support beam (35) constitute a double frame support structure, and the center position is reinforced by a reinforcing column (31).

8. A recyclable and reusable prefabricated foundation pit support system for collapsible loess areas according to claim 7, characterized in that: The first welding frame (17), the second welding frame (22) and the second support beam (32) are welded and fixed. The support connecting rod (18) is fixed on the first protrusion (11). The lower end of the connecting pile frame (13) is fixed to the pile body by a nut.

9. A recyclable and reusable prefabricated foundation pit support system for collapsible loess areas according to claim 8, characterized in that: The first connecting mechanism (5) and the second connecting mechanism (7) are fastened together by connecting bolts (10), and the connecting stabilizing rod (15) is fixedly connected to the first support beam (29) and the fourth support beam (35).

10. A recyclable and reusable prefabricated foundation pit support system for collapsible loess areas according to claim 9, characterized in that: The reinforcing column (31) and the second support beam (32) are provided with different sizes to support and adjust, and the support connecting component (3) cooperates with the support component (4) to perform ring support protection.

Images