A detachable deep foundation pit steel reinforced concrete combined inner support node connecting structure

Abstract

The utility model discloses a detachable deep foundation pit type steel reinforced concrete combined inner support node connecting structure, including the support rod of setting in the crown beam turning, and the both ends of support rod are connected with the connecting plate through the connecting piece respectively, and the opposite end of two groups of connecting plates is connected with the fixed card through detachable fixing spare respectively, and the mouth part of two groups of fixed cards is connected together with the corresponding side end surface of crown beam through the clamping piece, through the setting of detachable fixing spare, realize the connection of fixed card and connecting plate, need not to break the welding point to complete installation and dismounting, and the operation difficulty is reduced greatly, avoids the damage to the component, is favorable to the repeated use of component to reduce the demolition cost and workload, simultaneously, the rotation cooperation of connecting plate and fixed rod can adapt to the angle demand of crown beam turning, avoids the stress concentration caused by rigid welding, and promotes the adaptability and stability of support structure.

Description

Technical Field

[0001] This utility model relates to the technical field of detachable deep foundation pit steel-concrete composite internal support node connection structure, specifically a detachable deep foundation pit steel-concrete composite internal support node connection structure. Background Technology

[0002] Deep foundation pit engineering mainly includes the design and construction of foundation pit support system and earthwork excavation. If the foundation pit is close to the building or is in soft soil or poor soil quality, the requirements for foundation pit deformation are very strict. The displacement deformation cannot be too large. Therefore, it is necessary to use a bar concrete composite internal bracing structure for support.

[0003] Currently, Chinese patent CN221167832U discloses a concrete-filled pile internal support structure for deep foundation pits in soft soil. This structure is installed inside the foundation pit, with multiple concrete-filled piles constructed around the perimeter of the pit's inner cavity. Anchor rods are installed at the top of each perimeter of the inner cavity, and these anchor rods are embedded in an anchor body within the pit. Multiple tie rods extending to the outside of the anchor body are installed inside the anchor body. This invention, through the installation of concrete-filled piles, effectively retains soil and water in the deep foundation pit. The anchor rods provide longitudinal tension, overcoming the reduced compressive strength due to the surrounding resistance. The capping beam interlocks the pile heads of the same row of concrete-filled piles, increasing their horizontal stiffness. The support components further reinforce areas of the foundation pit with poor soil conditions, thus achieving better support for deep foundation pits.

[0004] The aforementioned concrete-filled pile internal bracing structure for deep foundation pits in soft soil has some problems in actual use. In the support components, the connectors at both ends of the support rod are welded to the metal sleeves fitted on the tie rods, and the tie rods are also welded to the metal sleeves. The welding connection method makes the components tightly connected, and disassembly requires breaking the welding points, which is difficult to operate and may damage the components themselves. It is difficult to reuse them, which increases the dismantling cost and workload. Utility Model Content

[0005] The purpose of this invention is to provide a detachable deep foundation pit steel-concrete composite internal support node connection structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A detachable deep foundation pit steel-concrete composite internal support node connection structure includes a support rod set at the bend of the cap beam. The two ends of the support rod are respectively connected to the connecting plate by the connector. The opposite ends of the two sets of connecting plates are respectively connected to the fixing clip by the detachable fixing component. The openings of the two sets of fixing clips are respectively connected to the corresponding side end surface of the cap beam by the snap-fit ​​component.

[0008] The detachable fastener includes mounting plates that are fixedly connected to the lower part of opposite sides of two sets of fixing clips. The top of each of the two sets of mounting plates is fixedly connected to a fixing rod. The top of opposite ends of the two sets of connecting plates is provided with a transition hole. The transition holes at opposite ends of the two sets of connecting plates are rotatably fitted onto the outer surface of the corresponding fixing rod. The top of each of the two sets of fixing rods is fixedly connected to a threaded post. The upper end of each of the two sets of threaded posts is provided with a positioning element for positioning the threaded post. The upper end of each of the two sets of threaded posts is threadedly connected to a fixing nut. Tightening the fixing nut downwards presses it against the top of the positioning element.

[0009] As a preferred technical solution, the connector includes external threads respectively provided on the surfaces of both ends of the support rod, and threaded holes are opened at the opposite ends of the two sets of connecting plates. The two ends of the support rod are respectively threaded to the inner cavity of the corresponding side threaded hole through external threads. A hexagonal sleeve is fixedly sleeved in the middle of the support rod. Rotating the hexagonal sleeve can drive the support rod to rotate, thereby pushing the connecting plate outward at the same time.

[0010] As a preferred technical solution, the snap-fit ​​component includes two sets of L-shaped plates respectively disposed at each set of fixing slots. The ends of the two sets of L-shaped plates on the same side are in contact to form a U-shape. The openings formed by the two sets of L-shaped plates on the same side are snapped onto the corresponding side surface of the crown beam and fixedly connected together by embedded parts. A 7-shaped strip is fixedly connected to the outer side of the opposite end of the two sets of L-shaped plates on the same side. The backs of the two sets of 7-shaped strips are attached together to form a T-shape. The two sets of 7-shaped strips on the same side are slidably inserted into the openings of the corresponding side fixing clips. The tops of the two sets of fixing clips are respectively provided with anti-detachment parts to prevent the two sets of 7-shaped strips on the corresponding side from sliding out of the inner cavity of the fixing clip.

[0011] As a preferred technical solution, the embedded parts include mounting bolts pre-embedded on the upper and lower surfaces of the crown beam. Each set of L-shaped plates has mounting holes on its surface and at positions corresponding to the mounting bolts on the corresponding sides for the mounting bolts to pass through. Each set of L-shaped plates is respectively snapped onto the corresponding side surface of the crown beam, and the mounting bolts pass through the mounting holes at the corresponding positions. The ends of each set of mounting bolts are threaded with mounting nuts. Rotating the mounting nuts causes their ends to press against the surface of the corresponding L-shaped plates.

[0012] As a preferred technical solution, the anti-detachment component includes connecting bolts respectively disposed above each set of fixing clips. The ends of the connecting bolts located on both sides pass downward through the corresponding side fixing clip and the two sets of 7-shaped strips and extend to the lower part of the corresponding side fixing clip. Each set of connecting bolts has a connecting nut threadedly connected to its surface.

[0013] As a preferred technical solution, the positioning component includes a through hole opened at the top of each set of fixing clips, a positioning rod inserted into the inner cavity of the through hole, and a limiting ring fixedly connected to the neck of each set of positioning rods. The limiting ring is sleeved on the outer surface of the corresponding side threaded post for positioning the end of the threaded post.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model achieves the connection between the fixing clip and the connecting plate through the setting of detachable fasteners. Installation and disassembly can be completed without damaging the welding points, which greatly reduces the difficulty of operation, avoids damage to the components, and facilitates the reuse of components, thereby reducing disassembly costs and workload. At the same time, the rotational cooperation between the connecting plate and the fixing rod can adapt to the angle requirements of the crown beam at the bend, avoids stress concentration caused by rigid welding, and improves the adaptability and stability of the support structure.

[0016] 2. This utility model, through the setting of the connecting parts, can drive the support rod to rotate by rotating the hexagonal sleeve, thereby simultaneously pushing the connecting plates on both sides outward. The operation is convenient and efficient, and can quickly realize the synchronous adjustment of the position of the connecting plates, ensuring balanced force on both sides. At the same time, the support force of the support rod on the connecting plate can be flexibly changed, further optimizing the support effect at the bend of the crown beam and enhancing the adaptability of the overall structure.

[0017] 3. This utility model, through the setting of pre-embedded parts and the use of pre-embedded mounting bolts, prepares in advance for the fixing of the L-shaped plate, simplifying the on-site installation process. At the same time, after the mounting bolts pass through the mounting holes of the L-shaped plate, they are fixed by mounting nuts, which can firmly press the L-shaped plate onto the surface of the crown beam, ensuring that the L-shaped plate and the crown beam are tightly connected and not easy to loosen. It can effectively transfer the load, enhance the clamping and fixing effect of the L-shaped plate on the crown beam, and provide a solid foundation for the entire support structure. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the detachable deep foundation pit steel-concrete composite internal support node connection structure of this utility model.

[0019] Figure 2 This is a structural schematic diagram of the installation position of the threaded column of this utility model;

[0020] Figure 3 This is a schematic diagram showing the location of the threaded hole in this utility model.

[0021] In the picture:

[0022] 100. Crown beam;

[0023] 200. L-shaped plate; 201. Mounting nut; 202. Mounting bolt; 203. L-shaped strip; 204. Fixing clip; 205. Connecting nut; 206. Connecting bolt; 207. Mounting hole;

[0024] 300. Hexagonal sleeve; 301. Support rod; 302. External thread; 303. Connecting plate; 304. Mounting plate; 305. Fixing nut; 306. Limiting ring; 307. Positioning rod; 308. Through hole; 309. Threaded post; 310. Fixing rod; 311. Adapter hole; 312. Threaded hole. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-3 This embodiment provides a detachable deep foundation pit steel-concrete composite internal support node connection structure, including a support rod 301 set at the bend of the cap beam 100. The two ends of the support rod 301 are respectively connected to the connecting plate 303 through the connector. The opposite ends of the two sets of connecting plates 303 are respectively connected to the fixing clip 204 through the detachable fixing component. The openings of the two sets of fixing clips 204 are respectively connected to the corresponding side end surface of the cap beam 100 through the snap-fit ​​component.

[0027] The detachable fastener includes mounting plates 304 fixedly connected to the lower part of opposite sides of two sets of fixing clips 204. Fixing rods 310 are fixedly connected to the top of each of the two sets of mounting plates 304. Adapter holes 311 are respectively opened at the top of the opposite ends of the two sets of connecting plates 303. The adapter holes 311 at the opposite ends of the two sets of connecting plates 303 are rotatably fitted onto the outer surface of the corresponding fixing rods 310. Threaded posts 309 are fixedly connected to the top of each of the two sets of fixing rods 310. Positioning elements for positioning the threaded posts 309 are respectively provided at the upper ends of the two sets of threaded posts 309. The upper end of each component is threaded with a fixing nut 305. Tightening the fixing nut 305 downwards presses it against the top of the positioning component. The connection between the fixing clip 204 and the connecting plate 303 is achieved through the setting of the detachable fixing component. Installation and disassembly can be completed without damaging the welding points, which greatly reduces the difficulty of operation, avoids damage to the components, and facilitates the reuse of the components, thereby reducing disassembly costs and workload. At the same time, the rotational cooperation between the connecting plate 303 and the fixing rod 310 can adapt to the angle requirements of the crown beam 100 at the bend, avoids stress concentration caused by rigid welding, and improves the adaptability and stability of the support structure.

[0028] The connector includes external threads 302 respectively provided on the surfaces of both ends of the support rod 301. Each of the two sets of connecting plates 303 has a threaded hole 312 at one end. Both ends of the support rod 301 are threaded to the inner cavity of the corresponding threaded hole 312 via the external threads 302. A hexagonal sleeve 300 is fixedly fitted in the middle of the support rod 301. Rotating the hexagonal sleeve 300 can drive the support rod 301 to rotate, thereby simultaneously pushing the connecting plates 303 outwards. Through the connector, rotating the hexagonal sleeve 300 can drive the support rod 301 to rotate, thereby simultaneously pushing the connecting plates 303 on both sides outwards. This operation is convenient and efficient, allowing for rapid and synchronous adjustment of the position of the connecting plates 303, ensuring balanced force on both sides. It also allows for flexible changes in the support force of the support rod 301 on the connecting plates 303, further optimizing the support effect at the bend of the crown beam 100 and enhancing the adaptability of the overall structure.

[0029] The snap-fit ​​component includes two sets of L-shaped plates 200 respectively disposed at the opening of each set of fixing clips 204. The ends of the two sets of L-shaped plates 200 on the same side are in contact to form a U-shape. The openings formed by the two sets of L-shaped plates 200 on the same side snap onto the corresponding side surface of the crown beam 100 and are fixedly connected together by embedded parts. A 7-shaped strip 203 is fixedly connected to the outer side of the opposite end of each set of L-shaped plates 200 on the same side. The backs of the two sets of 7-shaped strips 203 are attached together to form a T-shape. The two sets of 7-shaped strips 203 on the same side are slidably inserted into the corresponding... At the opening of the side fixing clip 204, the top of each of the two sets of fixing clips 204 is provided with an anti-detachment component to prevent the two sets of 7-shaped strips 203 on the corresponding side from sliding out of the inner cavity of the fixing clip 204. Through the setting of the snap-fit ​​component, the two sets of L-shaped plates 200 form a U-shape and snap onto the surface of the crown beam 100, increasing the contact area with the crown beam 100, making the fixation more stable, effectively dispersing the force, and avoiding excessive local force on the crown beam 100 and damage. At the same time, the 7-shaped strips 203 fit into a T-shape and slide into the opening of the fixing clip 204, which facilitates the quick docking and installation of the fixing clip 204 and the L-shaped plate 200.

[0030] The embedded parts include mounting bolts 202 embedded on the upper and lower surfaces of the crown beam 100. Each set of L-shaped plates 200 has mounting holes 207 on its surface corresponding to the mounting bolts 202. Each set of L-shaped plates 200 is snapped onto the corresponding surface of the crown beam 100, and the mounting bolts 202 pass through the corresponding mounting holes 207. Each set of mounting bolts 202 has a mounting nut 201 threaded to its end. Rotating the mounting nut 201 causes its end to press against the corresponding L-shaped plate. On the surface of the L-shaped plate 200, the pre-embedded parts and the pre-embedded mounting bolts 202 are used to prepare for the fixing of the L-shaped plate 200 in advance, which simplifies the on-site installation process. At the same time, after the mounting bolts 202 pass through the mounting holes 207 of the L-shaped plate 200, they are fixed by the mounting nuts 201, which can firmly press the L-shaped plate 200 onto the surface of the crown beam 100, ensuring that the L-shaped plate 200 and the crown beam 100 are tightly connected and not easy to loosen. This can effectively transfer the load and enhance the clamping and fixing effect of the L-shaped plate 200 on the crown beam 100, providing a solid foundation for the entire support structure.

[0031] The anti-detachment component includes connecting bolts 206 respectively installed above each set of fixing clips 204. The ends of the connecting bolts 206 on both sides penetrate downwards through the corresponding side fixing clips 204 and two sets of L-shaped strips 203 and extend to the lower part of the corresponding side fixing clips 204. Each set of connecting bolts 206 has a connecting nut 205 threadedly connected to its surface. With the anti-detachment component, the connecting bolts 206 penetrate the fixing clips 204 and L-shaped strips 203 and are fixed by the connecting nuts 205, which can effectively limit the L-shaped strips 203 and prevent them from sliding out of the inner cavity of the fixing clips 204 during use. This ensures the continuity and reliability of the connection between the fixing clips 204 and the L-shaped plate 200. At the same time, the bolt and nut matching structure is simple, easy to install and disassemble, convenient for later maintenance and adjustment, and can adapt to the stress requirements under different working conditions, thus enhancing the safety of the overall structure.

[0032] The positioning component includes a through hole 308 at the top of each set of fixing clips 204. A positioning rod 307 is inserted into the inner cavity of the through hole 308. A limiting ring 306 is fixedly connected to the neck of each set of positioning rods 307. The limiting ring 306 is sleeved on the outer surface of the corresponding threaded post 309 to position the end of the threaded post 309. With the positioning component, the positioning rod 307 is inserted into the through hole 308 at the top of the fixing clip 204, and the limiting ring 306 at its neck is sleeved on the outer surface of the threaded post 309, which can accurately position the threaded post 309 and ensure that the threaded post 309 is stable in position during installation and use, and avoids displacement.

[0033] Working principle;

[0034] The mounting bolts 202 are pre-embedded on the upper and lower surfaces of the crown beam 100. Align the opening of each L-shaped plate 200 with the corresponding side surface of the crown beam 100, so that the mounting bolts 202 pass through the mounting holes 207 at the corresponding positions on the surface of the L-shaped plate 200. Then, thread the mounting nut 201 to the end of the mounting bolt 202. Rotate the mounting nut 201 so that its end presses against the surface of the corresponding side L-shaped plate 200, thus completing the fixation of the L-shaped plate 200 to the crown beam 100.

[0035] The ends of the two sets of L-shaped plates 200 on the same side contact to form a U-shape, and the backs of the 7-shaped strips 203 on the opposite outer side are attached to form a T-shape. Then, the two sets of fixing clips 204 are slidably sleeved on the surfaces of the two sets of 7-shaped strips 203 on the corresponding sides.

[0036] Next, the end of the connecting bolt 206 is inserted downward through the corresponding side fixing clip 204 and the two sets of 7-shaped strips 203 and extended to the lower part of the fixing clip 204. The connecting nut 205 is threaded onto the surface of the connecting bolt 206 to complete the connection and fixation of the fixing clip 204 and the 7-shaped strips 203.

[0037] Then, the two sets of connecting plates 303 are threaded to both ends of the support rod 301, and the hexagonal sleeve 300 is rotated to rotate the support rod 301 and push the connecting plates 303 outward, so that the transition holes 311 opened at the ends of the two sets of connecting plates 303 are aligned with the corresponding side fixing rods 310. At this time, the two sets of connecting plates 303 are respectively fitted onto the outer circular surface of the corresponding side fixing rods 310.

[0038] At this point, the positioning rod 307 is inserted into the corresponding side through hole 308, and the limiting ring 306 connected to its neck is sleeved on the surface of the threaded post 309 at the top of the fixing rod 310. Then, the fixing nut 305 is threadedly connected to the upper end of the threaded post 309, and the fixing nut 305 is tightened downwards to press it against the top of the positioning part, thus completing the fixing of the connecting plate 303 and the fixing clip 204.

[0039] 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 detachable deep foundation pit steel-concrete composite internal support node connection structure, characterized in that, Includes a support rod (301) set at the bend of the crown beam (100), with connecting plates (303) connected to both ends of the support rod (301) via connectors, and fixing clips (204) connected to opposite ends of the two sets of connecting plates (303) via detachable fasteners, and the openings of the two sets of fixing clips (204) connected to the corresponding side end surfaces of the crown beam (100) via snap-fit ​​connectors; The detachable fastener includes mounting plates (304) that are fixedly connected to the lower part of opposite sides of two sets of fixing clips (204). The top of the two sets of mounting plates (304) is fixedly connected to a fixing rod (310). The top of the opposite ends of the two sets of connecting plates (303) are respectively provided with a transition hole (311). The transition holes (311) at the opposite ends of the two sets of connecting plates (303) are respectively rotatably sleeved on the outer surface of the corresponding side fixing rod (310). The top of the two sets of fixing rods (310) is fixedly connected to a threaded post (309). The upper end of the two sets of threaded posts (309) is respectively provided with a positioning element for positioning the threaded post (309). The upper end of the two sets of threaded posts (309) is respectively threadedly connected to a fixing nut (305). Tightening the fixing nut (305) downwards presses it against the top of the positioning element.

2. The detachable deep foundation pit steel-concrete composite internal support node connection structure according to claim 1, characterized in that: The connector includes external threads (302) respectively provided on the surfaces of both ends of the support rod (301). Each of the two sets of connecting plates (303) has a threaded hole (312) at one end. Both ends of the support rod (301) are threaded to the inner cavity of the corresponding side threaded hole (312) through the external threads (302). A hexagonal sleeve (300) is fixedly sleeved in the middle of the support rod (301). Rotating the hexagonal sleeve (300) can drive the support rod (301) to rotate, thereby pushing the connecting plate (303) outward at the same time.

3. The detachable deep foundation pit steel-concrete composite internal support node connection structure according to claim 2, characterized in that: The snap-fit ​​component includes two sets of L-shaped plates (200) respectively disposed at the opening of each set of fixing clips (204). The ends of the two sets of L-shaped plates (200) on the same side are in contact to form a U-shape. The openings formed by the two sets of L-shaped plates (200) on the same side are snapped onto the corresponding side surface of the crown beam (100) and fixedly connected together by embedded parts. The outer sides of the opposite ends of the two sets of L-shaped plates (200) on the same side are fixedly connected with 7-shaped strips (203). The backs of the two sets of 7-shaped strips (203) are attached together to form a T-shape. The two sets of 7-shaped strips (203) on the same side are slidably inserted into the openings of the corresponding side fixing clips (204). The tops of the two sets of fixing clips (204) are respectively provided with anti-detachment parts to prevent the two sets of 7-shaped strips (203) on the corresponding side from sliding out of the inner cavity of the fixing clip (204).

4. The detachable deep foundation pit steel-concrete composite internal support node connection structure according to claim 3, characterized in that: The embedded parts include mounting bolts (202) embedded on the upper and lower surfaces of the crown beam (100). Each set of L-shaped plates (200) has mounting holes (207) on its surface and at positions corresponding to the mounting bolts (202) for the mounting bolts (202) to pass through. Each set of L-shaped plates (200) is snapped onto the corresponding side surface of the crown beam (100) and the mounting bolts (202) pass through the mounting holes (207) at the corresponding positions. The ends of each set of mounting bolts (202) are threaded with mounting nuts (201). Rotating the mounting nuts (201) causes their ends to press against the surface of the corresponding L-shaped plates (200).

5. The detachable deep foundation pit steel-concrete composite internal support node connection structure according to claim 3, characterized in that: The anti-detachment component includes connecting bolts (206) respectively disposed above each set of fixing clips (204). The ends of the connecting bolts (206) located on both sides pass downward through the corresponding side fixing clips (204) and two sets of 7-shaped strips (203) and extend to the lower part of the corresponding side fixing clips (204). Each set of connecting bolts (206) has a connecting nut (205) threadedly connected to its surface.

6. A detachable deep foundation pit steel-concrete composite internal support node connection structure according to any one of claims 1-5, characterized in that: The positioning element includes a through hole (308) opened at the top of each set of fixing clips (204), and a positioning rod (307) is inserted into the inner cavity of the through hole (308). A limiting ring (306) is fixedly connected to the neck of each set of positioning rods (307). The limiting ring (306) is sleeved on the outer surface of the corresponding side threaded post (309) for positioning the end of the threaded post (309).

Images