An underground continuous wall joint box

Abstract

A kind of underground continuous wall joint box, it includes: joint box, pull block one is fixedly connected on the top of joint box, protection assembly is arranged in the inside of joint box;Protection assembly includes multiple fixed plates and connecting columns, the inner wall of multiple fixed plates is fixedly connected in the inner wall of joint box, the inner wall of connecting column is fixedly connected in the inside of fixed plate, the inner wall of multiple connecting columns is fixedly connected in the inner wall of joint box, the outer wall of each connecting column is fixedly connected multiple connecting plates one, the inside of adjacent two connecting plates one is fixedly connected with transmission plate, the both sides of each transmission plate are fixedly connected with connecting plate two.The utility model discloses increase the accurate cooperation of joint box and reinforcement cage, improve the groove segment connection precision, ensure the sealing effect of joint part, avoid the leakage hidden danger of underground water;Moreover, the utility model greatly reduces the construction difficulty and safety risk of joint box in the process of pulling out, improves the construction efficiency and engineering quality of underground continuous wall, with strong practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of underground continuous wall joint boxes, and in particular to an underground continuous wall joint box. Background Technology

[0002] Diaphragm walls, as a core technology for deep foundation pit support and underground structure construction, are widely used in urban subways, large underground utility tunnels, and basement construction of high-rise buildings. Joint boxes, as key components for connecting diaphragm wall unit sections, directly affect the integrity, waterproofing, and structural safety of the wall. In complex underground construction environments, joint boxes must accurately perform multiple functions, including rebar cage positioning, concrete pouring isolation, and section connection, becoming a crucial technical node for ensuring the quality of underground engineering projects. Currently, traditional diaphragm wall joint boxes mostly adopt steel box structures, which are pre-embedded at the ends of trench sections and fixed to the reinforcing cage by welding or bolting. The technical principle is that during concrete pouring, the physical separation of the box forms a construction joint between adjacent trench sections. After the concrete solidifies, the joint box is removed using a jacking device, reserving space for connecting subsequent trench sections. This structural design relies on the box's own rigidity to resist external pressure and uses surface coating to improve waterproofing performance, meeting basic usage requirements under conventional construction conditions. However, in actual construction, the diaphragm wall joint box faces a complex stress environment. Due to the continuous action of soil pressure on the trench wall and the lateral pressure generated during concrete pouring, traditional joint boxes are prone to local deformation. This deformation not only disrupts the precise fit between the joint box and the reinforcing cage, leading to a decrease in the connection accuracy of the trench sections, but also affects the sealing effect of the joint, causing potential groundwater leakage. Furthermore, the deformed joint box is prone to jamming during the extraction process, increasing construction difficulty and safety risks, and severely restricting the construction efficiency and project quality of the diaphragm wall. Therefore, a new type of diaphragm wall joint box is proposed to solve these problems. Utility Model Content

[0003] Based on the aforementioned technical problems, this utility model proposes an underground continuous wall joint box to solve the problems existing in the background technology.

[0004] In view of this, the present invention proposes a joint box for underground continuous wall, comprising: a joint box, wherein a pulling block is fixedly connected to the top of the joint box, and a protective component is provided inside the joint box; the protective component includes multiple fixing plates and connecting columns, wherein the side walls of the multiple fixing plates are fixedly connected to the inner wall of the joint box, the outer walls of the connecting columns are fixedly connected to the inside of the fixing plates, the two ends of the multiple connecting columns are fixedly connected to the inner wall of the joint box, multiple connecting plates are fixedly connected to the outer wall of each connecting column, a transmission plate is fixedly connected to the inside of two adjacent connecting plates, and connecting plates are fixedly connected to both sides of each transmission plate.

[0005] Furthermore, the plurality of fixed plates and connecting columns are vertically distributed, and adjacent connecting plates are cross-distributed.

[0006] Furthermore, one side of each of the multiple connecting plates is fixedly connected to the inner wall of the connector box, and the outer wall of the connector box is provided with a pull-out assembly.

[0007] Furthermore, the pull-out assembly includes multiple side plates located on both sides of the connector box, and a slider is fixedly connected to one side of each side plate.

[0008] Furthermore, multiple sliders are slidably connected inside the connector box, and multiple bolts are threadedly connected inside the connector box.

[0009] Furthermore, each of the bolts is fixedly connected to a locking pin at its bottom end, and each locking pin on each side engages with the inside of the slider.

[0010] Furthermore, a second pull block is fixedly connected to the top of each of the aforementioned side panels.

[0011] This utility model proposes a joint box for underground continuous wall, which has the following advantages compared with the prior art: 1. By dispersing the pressure on the surface of the joint box to the surrounding area through multiple pulling blocks, connecting columns, connecting plates, transmission plates, and connecting plates, the protective effect on the surface of the joint box is achieved. This solves the problem that traditional products are prone to deformation during underground construction due to various external forces such as trench wall soil pressure and concrete pouring pressure, which can affect their fit with the reinforcing cage, the waterproof performance of the joint, and subsequent lifting operations. This enhances the stability of the joint box surface.

[0012] 2. By pulling block two, the slider on one side of the side plate slides inside the joint box, separating the side plate from the trench wall. This allows the joint box to be easily pulled out of the trench wall, solving the problem of frictional resistance from the trench wall, concrete adhesion, and its own weight when pulling out the joint box before the concrete hardens. This is especially useful in deep underground continuous wall construction, where the difficulty of pulling out the joint box increases significantly as the trench section deepens and the joint box length increases. This method enhances the portability of the joint box.

[0013] 3. The use of this utility model increases the precise matching between the joint box and the reinforcing cage, improves the connection accuracy of the trench section, ensures the sealing effect of the joint, and avoids the hidden danger of groundwater leakage. Moreover, the use of this utility model greatly reduces the construction difficulty and safety risks of the joint box during the lifting process, improves the construction efficiency and project quality of the underground continuous wall, and has strong practicality. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of this utility model; Figure 2 This is a top view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the internal locking pin connection structure of this utility model; Figure 4 This is a schematic diagram of the connection structure of the connecting plate two inside this utility model; Figure 5 This is a schematic diagram of the internal fixing plate connection structure of this utility model.

[0015] In the diagram: 1. Connector box; 2. Slider; 3. Side plate; 4. Pull block one; 5. Pull block two; 6. Bolt; 7. Clamping post; 8. Fixing plate; 9. Connecting post; 10. Connecting plate one; 11. Transmission plate; 12. Connecting plate two. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the contents disclosed below.

[0018] The following combination Figures 1 to 5 The technical solution of this utility model will be further explained.

[0019] First embodiment, such as Figure 1 , Figure 4 and Figure 5As shown: A diaphragm wall joint box, which includes: a joint box 1, a pulling block 4 fixedly connected to the top of the joint box 1, the pulling block 4 working with a crane to lift and pull, achieving the effect of facilitating the overall hoisting of the joint box 1, and a protective component installed inside the joint box 1 to disperse external pressure and enhance the structural stability of the joint box 1. The protective assembly includes multiple fixing plates 8 and connecting columns 9. The fixing plates 8 are used to withstand and transmit external pressure to the connecting columns 9, and the connecting columns 9 are used to evenly transmit pressure to the inner wall of the connector box 1. The side walls of the multiple fixing plates 8 are fixedly connected to the inner wall of the connector box 1, and the outer walls of the connecting columns 9 are fixedly connected to the inside of the fixing plates 8. The two ends of the multiple connecting columns 9 are fixedly connected to the inner wall of the connector box 1. Each connecting column 9 has multiple connecting plates 10 fixedly connected to its outer wall. The connecting plates 10 are used to connect adjacent connecting columns 9 and form a mesh support structure. The interiors of two adjacent connecting plates 10 are fixed. A transmission plate 11 is connected to the connector box 1. The transmission plate 11 is used to transmit local pressure laterally to the connecting plate 12. Each transmission plate 11 is fixedly connected to the connecting plate 12 on both sides. The connecting plate 12 is used to finally distribute the pressure to the side wall of the connector box 1. Multiple fixed plates 8 and connecting columns 9 are vertically distributed. Adjacent connecting plates 10 are cross-distributed. Multiple connecting plates 12 are fixedly connected to the inner wall of the connector box 1 on one side. The outer wall of the connector box 1 is provided with a lifting assembly. The lifting assembly is used to reduce the frictional resistance between the product side wall and the groove wall, and facilitate the lifting operation of the connector box 1.

[0020] Reference Figures 1 to 3 The lifting assembly includes multiple side plates 3. The side plates 3 are used to isolate the joint box 1 from direct contact with the groove wall, reducing the friction area. The multiple side plates 3 are located on both sides of the joint box 1. Each side plate 3 is fixedly connected to a slider 2 on one side. The slider 2 is used to drive the side plate 3 to slide along the inner wall of the joint box 1, realizing the separation of the side plate 3 from the groove wall. The multiple sliders 2 are slidably connected inside the joint box 1. The joint box 1 is threaded with multiple bolts 6. The bolts 6 are used to fix the position of the slider 2 and prevent the side plate 3 from shifting during construction. Each bolt 6 is fixedly connected to a locking post 7 at the bottom. The locking post 7 is used to engage the inside of the slider 2, enhancing the stability of the slider 2. Each locking post 7 is engaged with the inside of the slider 2. Each side plate 3 is fixedly connected to a pulling block 2 5 at the top. The pulling block 2 5 works with the rope to perform the pre-lifting movement of the side plate 3, achieving the effect of reducing the lifting resistance of the joint box 1.

[0021] Working principle: During the use of the joint box 1, it will be subjected to various external forces such as the soil pressure of the trench wall and the concrete pouring pressure. These pressures will be transmitted to the surface of the fixing plate 8 or the connecting plate 12 inside the joint box 1. Then, through multiple connecting columns 9, connecting plate 10 and transmission plate 11, the pressure will be dispersed to the surrounding area to prevent excessive local pressure from causing the surface of the joint box 1 to sink. This achieves the protective effect on the surface of the joint box 1 and solves the problem that traditional products are prone to deformation during underground construction due to various external forces such as the soil pressure of the trench wall and the concrete pouring pressure. This affects the fit with the steel cage, the waterproof performance of the joint, and subsequent lifting operations. It enhances the stability of the surface of the joint box 1. When it is necessary to pull up the joint box 1, first remove the bolt 6 and the locking post 7 from the joint box 1 and the slider 2. Next, put the rope around the surface of the second pulling block 5, use a tool to push the side plate 3 to move, and make the slider 2 slide into the joint box 1. At this time, one side of the side plate 3 will separate from the trench wall. Next, put the rope around the surface of the first pulling block 4, and use a crane to pull up the joint box 1 from the inner wall of the trench. Since the friction between the side plate 3 and the trench wall is lost, the joint box 1 can be easily pulled up from the trench wall. This solves the problem that when pulling up the joint box 1 before the concrete solidifies, it will be affected by the frictional resistance of the trench wall, the bonding force of the concrete and its own weight. Especially in the construction of deep underground continuous walls, as the trench section deepens and the length of the joint box 1 increases, the difficulty of pulling up the joint box 1 increases significantly. This enhances the portability of pulling up the joint box 1.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A joint box for underground diaphragm walls, characterized in that: The device includes a connector box, with a pull block fixedly connected to the top of the connector box. A protective assembly is installed inside the connector box. The protective assembly includes multiple fixing plates and connecting columns. The side walls of the multiple fixing plates are fixedly connected to the inner wall of the connector box, and the outer walls of the connecting columns are fixedly connected to the inside of the fixing plates. Both ends of the multiple connecting columns are fixedly connected to the inner wall of the connector box. Multiple connecting plates are fixedly connected to the outer wall of each connecting column. A transmission plate is fixedly connected inside two adjacent connecting plates. Connecting plates are fixedly connected to both sides of each transmission plate.

2. The underground diaphragm wall joint box according to claim 1, characterized in that: The fixed plates and connecting columns are vertically distributed, and adjacent connecting plates are intersected.

3. The underground diaphragm wall joint box according to claim 2, characterized in that: Multiple connecting plates are fixedly connected to the inner wall of the connector box on one side, and a pull-out assembly is provided on the outer wall of the connector box.

4. The underground diaphragm wall joint box according to claim 3, characterized in that: The pull-out assembly includes multiple side plates, which are located on both sides of the connector box, and a slider is fixedly connected to one side of each side plate.

5. The underground diaphragm wall joint box according to claim 4, characterized in that: Multiple sliders are slidably connected inside the connector box, and multiple bolts are threaded inside the connector box.

6. The underground diaphragm wall joint box according to claim 5, characterized in that: Each bolt has a locking pin fixedly connected to its bottom end, and each locking pin on each side engages with the inside of the slider.

7. The underground diaphragm wall joint box according to claim 6, characterized in that: Each of the aforementioned side panels has a pull block 2 fixedly connected to its top.

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