Anti-sidesway supporting structure for deep foundation pit construction

Abstract

The utility model discloses an anti-sidesway supporting structure for deep foundation pit construction, and relates to the technical field of deep foundation pit supporting engineering, the anti-sidesway supporting structure comprises two groups of enclosure plates, the two groups of enclosure plates are symmetrically distributed, reinforcing plates are fixedly mounted on the sides, close to each other, of the two enclosure plates, and the two groups of reinforcing plates are telescopically connected through a plurality of groups of jacks; supporting seats are fixedly mounted on the sides, close to each other, of the two reinforcing plates, connecting seats are fixedly connected to the two ends of each jack, the connecting seats are embedded into the supporting seats, and a transverse ladder is mounted between the two reinforcing plates and comprises an adjusting rod and a supporting rod; the ends, away from each other, of the adjusting rods and the supporting rods are fixedly connected with the two reinforcing plates through limiting assemblies, efficient space utilization and operation safety are achieved through cooperation of the transverse ladders and the limiting assemblies, foundation pit spans with different widths can be accurately adapted by means of sliding sleeving connection of the adjusting rods and the supporting rods and conical surface extrusion locking of fastening pipes, and the construction efficiency is improved. And the high-risk behavior of treading the jack by personnel is avoided.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit support engineering technology, specifically a lateral displacement-resistant support structure for deep foundation pit construction. Background Technology

[0002] The anti-lateral displacement support structure for deep foundation pits is the core system for ensuring the stability of foundation pits. It is used to resist the lateral earth pressure of deep foundation pits, strictly control horizontal displacement, prevent foundation pit collapse and surrounding surface settlement, and protect the safety of adjacent buildings and pipelines.

[0003] In actual use, existing deep foundation pit support equipment is usually only equipped with a support system to maintain soil stability, lacking special safety passage facilities for personnel to cross the foundation pit. This results in the two sides of the foundation pit being physically isolated. Due to the neglect of the lateral passage needs of the construction site, workers are often forced to illegally step on jacks or support rods to cross in order to improve construction efficiency.

[0004] However, this operation is prone to causing falls from heights due to slippery rods, unstable force, or shift in the center of gravity of personnel, directly threatening the lives of workers. At the same time, unexpected external force trampling may interfere with the force balance of the support structure, weaken the stability of the anti-lateral displacement system, and create serious safety hazards for deep foundation pit projects. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-lateral displacement support structure for deep foundation pit construction, so as 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 lateral displacement stabilization support structure for deep foundation pit construction includes two sets of retaining plates. The two sets of retaining plates are symmetrically distributed, and a reinforcing plate is fixedly installed on the side of each set that is close to the other. The two sets of reinforcing plates are telescopically connected by multiple sets of jacks. A support seat is fixedly installed on the side of each set of reinforcing plates that is close to the other. A connecting seat is fixedly connected to both ends of each set of jacks, and the connecting seat is embedded in the support seat.

[0008] A horizontal ladder is installed between the two sets of reinforcing plates. The horizontal ladder includes two adjusting rods and two supporting rods. The two supporting rods are slidably sleeved on the two adjusting rods respectively. Multiple sets of connecting plates are fixedly connected between the two supporting rods.

[0009] The two adjusting rods and the two supporting rods are all fixedly connected to two sets of reinforcing plates by limiting components. The limiting components include limiting blocks and bases. The limiting blocks are fixedly connected to the end of the adjusting rod located outside the supporting rod, and the bases are detachably connected to the end of the supporting rod away from the adjusting rod.

[0010] As a further embodiment of this utility model, the number of limiting blocks is set to two, and a fixing frame is rotatably connected to the side of the two limiting blocks that are close to each other. The fixing frame is fixedly connected to the side wall of a set of reinforcing plates by bolts. A fixing shaft is fixedly installed in the inner cavity of the fixing frame, and a limiting handle is rotatably installed on the side of the limiting block that is away from the fixing frame.

[0011] As a further embodiment of this utility model, a return spring is sleeved on the outside of the fixed shaft, and the two ends of the return spring are fixedly connected to the side walls of the fixed frame and the limiting block, respectively.

[0012] As a further embodiment of this utility model, the limiting component also includes a pressure block. The base is fixedly installed on the outer wall of a set of reinforcing plates away from the fixing frame by bolts. The pressure block is fixedly installed on the end of the support rod away from the adjusting rod. The inner cavity of the base is provided with a groove that matches the shape of the pressure block, and the pressure block is embedded in the groove.

[0013] As a further embodiment of this utility model, a clamping bolt is threaded onto the side wall of the base, and one end of the clamping bolt passes through the pressure block.

[0014] As a further embodiment of this utility model, a threaded sleeve is fixedly connected to one end of the support rod near the adjusting rod, and a notch is provided at one end of the threaded sleeve near the adjusting rod, and a fastening tube is threaded onto the threaded sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. When using the anti-lateral displacement support structure of this utility model, the horizontal ladder combined with the limiting component achieves efficient space utilization and operational safety. With the sliding connection of the adjusting rod and the support rod, as well as the conical surface compression locking of the fastening tube, it can accurately adapt to the span of the foundation pit of different widths, and eliminate the high-risk behavior of personnel stepping on the jack. At the same time, the eccentric drive of the limiting handle makes the sawtooth ring of the limiting block mesh, which can firmly lock the passage angle. With the help of the return spring, the lock can be quickly released and parallel folding can be achieved for storage. While ensuring convenient passage, it also ensures the integrity of the construction space in the foundation pit.

[0017] 2. When the anti-lateral displacement support structure of this utility model is used, the anti-lateral displacement stiffness and safety stability are improved by using the retaining plate and the reinforcing plate in conjunction with the jack. The jack applies active support force between the symmetrical retaining plates, and the reinforcing plate is used to evenly distribute the load to the entire plate surface. It can effectively resist the lateral earth pressure of deep foundation pits and prevent collapse accidents, providing a stable working interface for workers in the pit. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a lateral displacement-resistant support structure for deep foundation pit construction.

[0019] Figure 2 This is a schematic diagram of a horizontal ladder in a lateral displacement-resistant support structure for deep foundation pit construction.

[0020] Figure 3 Structural disassembly of a limiting component in a lateral displacement-resistant support structure for deep foundation pit construction. Figure 1 .

[0021] Figure 4 Structural disassembly of a limiting component in a lateral displacement-resistant support structure for deep foundation pit construction. Figure 2 .

[0022] Figure 5 This is a structural breakdown diagram of a horizontal ladder in a lateral displacement-resistant support structure used in deep foundation pit construction.

[0023] In the diagram: 1. Enclosure panel; 2. Reinforcing plate; 3. Jack; 4. Support base; 5. Connecting base;

[0024] 6. Horizontal ladder; 61. Adjusting rod; 62. Support rod; 63. Connecting plate; 64. Threaded sleeve; 65. Fastening tube; 66. Moving plate;

[0025] 7. Limiting assembly; 701. Limiting block; 702. Fixing frame; 703. Fixing shaft; 704. Limiting handle; 705. Connecting block; 706. Return spring; 707. Base; 708. Pressure block; 709. Tightening bolt. 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] Please see Figure 1 , Figure 2 In this embodiment of the utility model, a lateral displacement-resistant support structure for deep foundation pit construction includes two sets of retaining plates 1. The two sets of retaining plates 1 are symmetrically distributed, and a reinforcing plate 2 is fixedly installed on the side of each set that is close to each other to improve the bending resistance of the entire retaining plate 1. The two sets of reinforcing plates 2 are connected by multiple sets of jacks 3 in a telescopic manner. A support seat 4 is fixedly installed on the side of each set of reinforcing plates 2 that is close to each other. A connecting seat 5 is fixedly connected to both ends of each set of jacks 3, and the connecting seat 5 is embedded in the support seat 4. The jacks 3 apply active support force between the two sets of retaining plates 1, and the reinforcing plate 2 transmits pressure to the retaining plate 1, thereby resisting the lateral earth pressure of the foundation pit, preventing soil from sliding or collapsing into the trench, and providing workers with a stable and clean working space.

[0028] Because the existing anti-lateral displacement support structure lacks safe passage facilities, construction workers can only illegally step on the jacks 3 when they want to cross the foundation pit, which may lead to safety hazards. Therefore, a horizontal ladder 6 is installed between the two sets of reinforcing plates 2. The horizontal ladder 6 includes two adjusting rods 61 and two support rods 62. The two support rods 62 are slidably sleeved on the two adjusting rods 61 respectively. Multiple sets of connecting plates 63 are fixedly connected between the two support rods 62. The horizontal ladder 6 is formed by adjusting rods 61, support rods 62 and connecting plates 63 to provide a safe passage for construction workers to cross the foundation pit.

[0029] The ends of the two adjusting rods 61 and the two supporting rods 62 that are far apart from each other are fixedly connected to the two sets of reinforcing plates 2 respectively through the limiting component 7, which is used to lock the unfolding angle of the horizontal ladder 6 and realize folding and storage. The limiting component 7 includes a limiting block 701 and a base 707. The limiting component 7 is fixedly connected to the end of the adjusting rod 61 located outside the supporting rod 62 through the limiting block 701.

[0030] It should be noted that, in order to facilitate the adjustment of the installation height of the jack 3, multiple sets of adjustment holes are provided on the outer wall of the support base 4, and the connecting seat 5 and the support base 4 are fixedly connected by inserting the plugs into the adjustment holes.

[0031] Please see Figure 2 , Figure 3 The number of limit blocks 701 is set to two, and the two limit blocks 701 are rotatably connected to the side of the two limit blocks 701 that are close to each other. The fixed frame 702 is fixedly installed on the side wall of a set of reinforcing plates 2 by bolts. The fixed shaft 703 is fixedly installed in the inner cavity of the fixed frame 702. The limit block 701 is rotatably installed on the side away from the fixed frame 702, which is used to limit the rotation of the horizontal ladder 6.

[0032] It should be noted that the limiting block 701 and the fixing frame 702 are both provided with serrated rings on the side where they are in contact, and the two mesh with each other. When the serrated rings are in contact, they can firmly restrict the rotation of the horizontal ladder 6 and ensure its stability during use. When not in use, the horizontal ladder 6 can be easily rotated to a position parallel to the reinforcing plate 2 for storage and fixation.

[0033] It should also be noted that the limiting block 701 is rotatably connected to the fixed shaft 703 via a bearing. The fixed shaft 703 passes through one end of the limiting block 701 and a connecting block 705 is fixed thereon. The limiting handle 704 is rotatably mounted on the outer wall of the connecting block 705 via a pin. The pin is located at the eccentric position of the circular structure at one end of the limiting handle 704. At the same time, a friction damping plate is added at the pin connection to effectively prevent it from rotating accidentally due to vibration and ensure a stable engagement and locking state.

[0034] When the limiting handle 704 is rotated to be parallel with the limiting block 701, the displacement generated by the eccentric structure pushes the limiting block 701 toward the fixing frame 702, so that the serrated rings of the two are tightly engaged, thereby locking the angle of the horizontal ladder 6. When the limiting handle 704 is rotated in the opposite direction to reset, the engagement can be released, making it easy to adjust the horizontal ladder 6 to the storage or use angle.

[0035] A return spring 706 is sleeved on the outside of the fixed shaft 703, and the two ends of the return spring 706 are fixedly connected to the side walls of the fixed frame 702 and the limiting block 701 respectively. It can automatically push the limiting block 701 open to separate the two sets of sawtooth rings, thereby realizing the rapid adjustment of the angle of the horizontal ladder 6.

[0036] It should be noted that the limiting block 701 is made of highly elastic aluminum alloy, and the return spring 706 is in a slightly compressed state in the initial state. When the return spring 706 pushes the limiting block 701, its controllable slight elastic deformation can provide the necessary axial displacement thrust for the separation of the two sets of sawtooth rings.

[0037] Please see Figure 2 , Figure 4 The limiting component 7 also includes a pressure block 708. The pressure block 708 and the base 707 can provide a stable auxiliary fixing point for the end of the support rod 62 to prevent it from shifting due to external force or vibration, and further improve the overall structural stability and safety of the horizontal ladder 6 after it is unfolded. The base 707 is fixedly installed on the outer wall of a set of reinforcing plates 2 away from the fixing frame 702 by bolts. The pressure block 708 is fixedly installed on the end of the support rod 62 away from the adjusting rod 61. The inner cavity of the base 707 is provided with a slot that matches the shape of the pressure block 708, and the pressure block 708 is embedded in the slot.

[0038] A clamping bolt 709 is threaded onto the side wall of the base 707, and one end of the clamping bolt 709 passes through the pressure block 708. The relative position of the base 707 and the pressure block 708 can be locked by tightening the clamping bolt 709.

[0039] It should be noted that the stability of the support is improved by the interlocking of the base 707 and the pressure block 708 and the locking of the clamping bolt 709.

[0040] Please see Figure 2 , Figure 5 A threaded sleeve 64 is fixedly connected to one end of the support rod 62 near the adjusting rod 61. A fastening tube 65 is threaded onto the threaded sleeve 64 to fix the length between the adjusting rod 61 and the support rod 62.

[0041] It should be noted that the threaded sleeve 64 is sleeved on the outside of the adjusting rod 61, and both its end and the end of the fastening tube 65 are designed with a tapered structure. The wall of the threaded sleeve 64 has a notch groove along the axial direction, which gives it a certain radial elasticity. By rotating the fastening tube 65, it can be made to cooperate with the tapered surface of the threaded sleeve 64 to produce a radial tightening or loosening effect, thereby quickly realizing the clamping and fixing or loosening adjustment of the adjusting rod 61, improving the convenience of use, and keeping it in a stable folded state when the horizontal ladder 6 is not in use, saving space and ensuring safety.

[0042] It should also be noted that the adjusting rod 61 and the support rod 62 are connected by a sliding connection, which can flexibly adjust the overall length of the horizontal ladder 6 according to the actual installation distance between the two sets of enclosure panels 1. The outer wall of the adjusting rod 61 is provided with multiple sets of mounting holes, and the surfaces of the two adjusting rods 61 are fitted with movable plates 66. The two are fixed by inserting pins into the corresponding mounting holes.

[0043] The working principle of this utility model is as follows:

[0044] When this utility model is used, the jack 3 first applies active support force between the symmetrically distributed retaining panels 1, and the reinforcing plate 2 is used to evenly transmit the pressure to the entire retaining panel 1, thereby effectively resisting lateral earth pressure and preventing collapse, and providing workers with a safe working space.

[0045] When construction workers need to cross the foundation pit, they can use the telescopic characteristics of the horizontal ladder 6 to match the width of the foundation pit by adjusting the relative sliding of the adjusting rod 61 and the support rod 62, and tighten the threaded sleeve 64 radially by rotating the fastening tube 65, thereby locking the length of the horizontal ladder 6.

[0046] During angle adjustment and locking, rotating the eccentric limit handle 704 causes displacement by the eccentric structure to push the limit block 701 to compress the return spring 706, making the limit block 701 tightly engage with the serrated ring on the fixing frame 702, thus locking the angle. At the same time, rotating in the opposite direction causes the two sets of serrated rings to separate by the thrust of the return spring 706, making it easy to fold the horizontal ladder 6 into a storage state parallel to the reinforcing plate 2. Then, the pressure block 708 at the other end of the horizontal ladder 6 is inserted into the groove of the base 707, and the tightening bolt 709 is tightened and locked, further enhancing the overall structural stability of the horizontal ladder 6 after it is unfolded, and eliminating the safety hazard of personnel stepping on the jack 3 to cross the pit.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lateral displacement-resistant support structure for deep foundation pit construction, comprising two sets of retaining panels (1), characterized in that, The two sets of enclosure panels (1) are symmetrically distributed, and a reinforcing plate (2) is fixedly installed on the side of each of them that is close to each other. The two sets of reinforcing plates (2) are connected in a telescopic manner by multiple sets of jacks (3). A support seat (4) is fixedly installed on the side of each of the two sets of reinforcing plates (2) that is close to each other. A connecting seat (5) is fixedly connected to both ends of each set of jacks (3), and the connecting seat (5) is embedded in the support seat (4). A horizontal ladder (6) is installed between the two sets of reinforcing plates (2). The horizontal ladder (6) includes two adjusting rods (61) and two supporting rods (62). The two supporting rods (62) are slidably sleeved on the two adjusting rods (61). Multiple sets of connecting plates (63) are fixedly connected between the two supporting rods (62). The two adjusting rods (61) and the two supporting rods (62) are fixedly connected to the two sets of reinforcing plates (2) respectively by limiting components (7). The limiting components (7) include limiting blocks (701) and bases (707). The limiting blocks (701) are fixedly connected to one end of the adjusting rod (61) outside the supporting rod (62). The bases (707) are detachably connected to one end of the supporting rod (62) away from the adjusting rod (61).

2. The anti-lateral displacement support structure for deep foundation pit construction according to claim 1, characterized in that, The number of the limiting blocks (701) is set to two, and the two limiting blocks (701) are rotatably connected to a fixing frame (702) on the side close to each other. The fixing frame (702) is fixedly connected to the side wall of a set of reinforcing plates (2) by bolts. A fixing shaft (703) is fixedly installed in the inner cavity of the fixing frame (702). A limiting handle (704) is rotatably installed on the side of the limiting block (701) away from the fixing frame (702).

3. The anti-lateral displacement support structure for deep foundation pit construction according to claim 2, characterized in that, A return spring (706) is sleeved on the outside of the fixed shaft (703), and the two ends of the return spring (706) are fixedly connected to the side walls of the fixed frame (702) and the limiting block (701), respectively.

4. The anti-lateral displacement support structure for deep foundation pit construction according to claim 3, characterized in that, The limiting component (7) also includes a pressure block (708). The base (707) is fixedly installed on the outer wall of a set of reinforcing plates (2) away from the fixing frame (702) by bolts. The pressure block (708) is fixedly installed on the end of the support rod (62) away from the adjusting rod (61). The inner cavity of the base (707) is provided with a slot that matches the shape of the pressure block (708), and the pressure block (708) is embedded in the slot.

5. The anti-lateral displacement support structure for deep foundation pit construction according to claim 4, characterized in that, A clamping bolt (709) is threaded onto the side wall of the base (707), and one end of the clamping bolt (709) passes through the pressure block (708).

6. The anti-lateral displacement support structure for deep foundation pit construction according to claim 1, characterized in that, The support rod (62) is fixedly connected to a threaded sleeve (64) at one end near the adjusting rod (61), and the threaded sleeve (64) is provided with a notch at one end near the adjusting rod (61), and a fastening tube (65) is threaded onto the threaded sleeve (64).

Images