Underground continuous wall support replacement structure

Abstract

The utility model provides a kind of underground continuous wall support replacement structure, including underground continuous wall, support plate, support replacement block and support column;The wall body of underground continuous wall is provided with slot, for inserting support replacement block;The support plate is connected on the two sides wall body of underground continuous wall, the upper end of the support plate is correspondingly provided with sliding slot for support replacement block, and the sliding direction of the sliding slot is towards underground continuous wall;The bottom of the support replacement block is correspondingly provided with limit block for sliding slot, the front end of the support replacement block is correspondingly provided with butt joint block for slot, the support replacement block is slidably installed in the sliding slot by limit block, and the butt joint block is inserted into the slot, to be connected as a whole;The support column is arranged below support plate, for providing support force.The underground continuous wall support replacement structure does not need to weld support replacement block together with support plate and underground continuous wall, improves the efficiency of support replacement structure.

Description

Technical Field

[0001] This utility model relates to the field of continuous wall construction technology, and more specifically, to an underground continuous wall support replacement structure. Background Technology

[0002] The diaphragm wall replacement support structure is a key structure in deep foundation pit engineering used to achieve a safe transfer of the support system. By installing replacement support components such as steel supports and concrete beams before removing temporary supports, the water and soil pressure borne by the diaphragm wall is gradually transferred to the main structure such as the already constructed base slab and floor slab, avoiding sudden changes in the stress on the retaining structure. Its core function is to control wall deformation and ensure the safety of the foundation pit. At the same time, it uses permanent structures to transfer force to reduce the consumption of temporary supports, taking into account both construction efficiency and economy. It is suitable for complex deep foundation pit scenarios such as subway stations and basements of high-rise buildings. During construction, the principle of replacing supports before removing supports must be strictly followed and simultaneous monitoring must be carried out to ensure smooth load transfer and structural stability.

[0003] The working principle of existing diaphragm wall replacement structures is that during the construction of deep foundation pits, when it is necessary to remove temporary supports, steel supports and concrete beams are installed in advance between the diaphragm wall and the existing permanent structures such as the foundation slab and floor slab. This creates a temporary force transmission path, gradually transferring the lateral water and soil pressure originally borne by the temporary supports to the permanent structure. When the temporary supports are removed, the replacement structure avoids sudden changes in the wall's stress, achieving a safe transition from the temporary support system to the permanent structure system. During this process, the replacement sequence must be strictly controlled, structural deformation must be monitored, and the connection nodes must be reliable to ensure the safety of foundation pit construction and structural stability.

[0004] In the application of diaphragm wall replacement structures, there are still key technical issues that need to be resolved. The replacement blocks need to be connected to the support plate and diaphragm wall in the field by welding, which seriously affects the efficiency of construction. Under the current process, the replacement blocks, as the core force transmission components, need to go through multiple processes such as beveling, positioning welding, and weld inspection. The welding of a single node takes an average of 4-6 hours, and it is necessary to wait for cooling and flaw detection acceptance. The time-consuming process is also significant. The space in the deep foundation pit is small and the environment is complex. Welding is easily affected by factors such as smoke and humidity, which poses a significant safety hazard. At the same time, the welding quality is highly dependent on the experience of the workers. The node is prone to failure due to operational errors, which requires rework. The above problems make the welding process a bottleneck on the critical path of construction, especially in projects with tight schedules, which significantly restricts the construction efficiency of the replacement structure.

[0005] Based on the above reasons, the replacement support structure was further improved in order to address the issue of needing to weld the replacement support block to the support plate and the underground continuous wall during equipment use. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of the existing technology by providing a diaphragm wall replacement structure that eliminates the need to weld the replacement block to the support plate and the diaphragm wall, thereby improving the efficiency of the replacement structure.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a diaphragm wall replacement structure, comprising a diaphragm wall, a support plate, a replacement block, and a support column; The underground continuous wall is provided with slots for inserting replacement blocks; The support plate is connected to the two side walls of the underground continuous wall. The upper end of the support plate is provided with a sliding groove corresponding to the replacement support block. The sliding direction of the sliding groove is towards the underground continuous wall. The bottom of the replacement support block is provided with a limiting block corresponding to the sliding groove, and the front end of the replacement support block is provided with a docking block corresponding to the slot. The replacement support block is slidably installed in the sliding groove through the limiting block, and the docking block is inserted into the slot to connect them as a whole. The support column is located below the support plate to provide support.

[0008] Preferably, the support column is a height-adjustable support column.

[0009] Preferably, a lifting ring is provided at the top of the support block.

[0010] Preferably, the groove is a sliding elongated hole with a limited length, opened at the upper end of the support plate, and the bottom end of the support block is connected to the limiting block through a connecting body, so that the limiting block is slidably disposed in the sliding elongated hole.

[0011] Preferably, a baffle parallel to the underground continuous wall is provided at the center of the upper end of the support plate, and supporting steel bars are installed on the baffle, with the length direction of the supporting steel bars perpendicular to the baffle.

[0012] Preferably, the area on the support plate for mounting the replacement support block is provided with a partition.

[0013] Preferably, the slot is a rectangular slot, which is either a through hole or a blind hole.

[0014] Preferably, the support column includes a base plate and at least one adjustable column body. The fixed section of the column body is provided with an equal height adjustment hole, and the telescopic section of the column body is provided with a corresponding fixing hole. The telescopic section is connected to the fixed section by a fixing pin.

[0015] Preferably, the protruding end of the fixed pin is provided with a through hole, and an elastic blocking pin is installed in the through hole. The elastic blocking pin includes two movable pins disposed at both ends of the through hole, a limiting plate disposed on the adjacent side of the movable pin, and a spring connecting the two limiting plates. The length of the elastic blocking pin in the contracted state is less than or equal to the diameter of the fixed pin.

[0016] Preferably, the end of the fixing pin is provided with a handle groove.

[0017] This utility model has substantial features and progress compared to the prior art. Specifically, by setting a sliding groove on the support plate and a slot on the diaphragm wall, this utility model allows a large mass replacement support block to slide and be inserted into the diaphragm wall based on the support plate, thus achieving an effective connection between the replacement support block and the diaphragm wall. This avoids the problem of welding the replacement support block to the support plate and the diaphragm wall during the use of the equipment, thereby improving the efficiency of the diaphragm wall replacement support structure.

[0018] Furthermore, the connecting plate is supported by height-adjustable support columns, which serve as a load-bearing structure and can transmit forces, further improving the stability of the equipment during use. Attached Figure Description

[0019] Figure 1 This is a perspective view of a replacement support structure for an underground continuous wall according to this utility model; Figure 2 This is an exploded structural diagram of the support plate of a continuous underground wall replacement support structure according to the present invention. Figure 3 for Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the support column of a continuous underground wall replacement structure according to this utility model; Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0020] In the diagram: 1. Diaphragm wall; 2. Support plate; 3. Expansion joint; 4. Replacement support block; 5. Lifting ring; 6. Connecting block; 7. Slot; 8. Connector; 9. Limiting block; 10. Slide groove; 11. Baffle; 12. Supporting steel bar; 13. Supporting column; 14. Adjustment hole; 15. Base plate; 16. Fixing pin; 17. Blocking pin; 18. Limiting plate; 19. Spring; 20. Handle groove. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0022] like Figures 1-5As shown, a diaphragm wall replacement structure includes a diaphragm wall 1, a support plate 2, a replacement block 4, and a support column 13.

[0023] The underground continuous wall 1 is provided with slots 7 for inserting replacement blocks 4. The slots 7 are rectangular slots, which can be designed as through-holes in the wall or as blind holes that are not through-holes opened on both sides. The number of slots is the same as the connecting blocks 6 of the replacement blocks 4, and the positions are directly opposite each other.

[0024] The support plate 2 is connected to the two side walls of the underground continuous wall 1. The upper end of the support plate 2 is provided with a sliding groove 10 corresponding to the replacement support block 4. The sliding direction of the sliding groove 10 is towards the underground continuous wall. Its specific structure is a sliding elongated hole with a limited length. The bottom end of the replacement support block 4 is connected to the limiting block 9 through the connecting body 8 so that the limiting block 9 is slidably set in the sliding elongated hole. The area on the support plate 2 for installing the replacement support block 4 is provided with a partition.

[0025] The limiting block 9 is located at the lower end of the support block 4. The front end of the support block 4 is provided with a docking block 6 corresponding to the slot 7. The support block 4 is slidably installed in the slide groove 10 through the limiting block 9, and the docking block 6 is inserted into the slot 7 to connect as a whole. The top end of the support block 4 is provided with a lifting ring 5, which is used to cooperate with other lifting equipment to move and adjust the position of the support block 4.

[0026] A baffle 11 parallel to the underground continuous wall is provided at the center of the upper end of the support plate 2. A supporting steel bar 12 is installed on the baffle 11, and the length direction of the supporting steel bar 12 is perpendicular to the baffle 11.

[0027] The support column 13 is located below the support plate 2 and is used to provide support force. In this embodiment, the support column 13 is a height-adjustable support column.

[0028] In this embodiment, the support column 13 includes a base plate 15 and at least one column body with adjustable length. The fixed section of the column body is provided with an adjustment hole 14 of equal height, and the telescopic section 3 of the column body is provided with a corresponding fixing hole. The telescopic section 3 is connected to the fixed section through a fixing pin 16.

[0029] Specifically, this embodiment provides a flexible adjustment scheme. The protruding end of the fixed pin 16 is provided with a through hole, and an elastic blocking pin is installed in the through hole. The elastic blocking pin includes two movable pins 17 set at both ends of the through hole, a limiting plate 18 set on the adjacent side of the movable pin, and a spring 19 connected between the two limiting plates. The length of the elastic blocking pin in the contracted state is less than or equal to the diameter of the fixed pin. The end of the fixed pin is provided with a handle groove 20. When the height of the support column 13 needs to be adjusted, the construction worker gently presses the movable pin 17 embedded in the through hole, so that the movable pin 17 retracts with the compression of the spring 19, and the elastic blocking pin shortens as a whole until it is smaller than the diameter of the adjustment hole 14, and the unlocking is completed. At this time, the construction worker firmly holds the support column 13 with both hands and slowly lifts or presses it up or down according to the project requirements to adjust it to the required height. Finally, the fixed pin 16 is aligned with the corresponding connection hole 14, and the arm is used to insert it accurately. As the blocking pin 17 automatically pops out and locks under the action of the spring 19, it marks that the height adjustment of the support column 13 has been successfully completed.

[0030] Work process description: During installation, the support plate 2 must first be fixed to the diaphragm wall 1 to ensure it is horizontal and stable, providing a solid foundation. Then, the replacement support block 4 is taken out from the material storage area. After confirming it is intact, the limiting block 9 at the bottom of the replacement support block 4 is slowly aligned with the position of the slide groove 10. At the same time, the connecting block 6 on the side of the replacement support block 4 is precisely aligned with the slot 7 on the diaphragm wall 1. Then, the replacement support block 4 is firmly held with both hands, and the limiting block 9 is slowly and forcefully inserted into the slide groove 10. Next, the replacement support block 4 is pushed forward. Under the steady application of force, the limiting block 9 and the connecting block 6 slowly slide into the deepest part of the slide groove 10 and the slot 7, respectively. The whole process is smooth and tight, finally achieving a stable connection between the replacement support block 4 and the support plate 2 and the diaphragm wall 1, ensuring the safety and reliability of subsequent load transfer.

[0031] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A diaphragm wall replacement structure, characterized in that: This includes diaphragm walls, support slabs, replacement support blocks, and support columns; The underground continuous wall is provided with slots for inserting replacement blocks; The support plate is connected to the two side walls of the underground continuous wall. The upper end of the support plate is provided with a sliding groove corresponding to the replacement support block. The sliding direction of the sliding groove is towards the underground continuous wall. The bottom of the replacement support block is provided with a limiting block corresponding to the sliding groove, and the front end of the replacement support block is provided with a docking block corresponding to the slot. The replacement support block is slidably installed in the sliding groove through the limiting block, and the docking block is inserted into the slot to connect them as one unit. The support column is located below the support plate to provide support.

2. The underground continuous wall replacement support structure according to claim 1, characterized in that: The support column is a height-adjustable support column.

3. The underground diaphragm wall replacement structure according to claim 1, characterized in that: The top of the support block is equipped with a lifting ring.

4. The underground continuous wall support structure according to claim 1, characterized in that: The groove is a sliding elongated hole with a limited length, opened at the upper end of the support plate. The bottom end of the support block is connected to the limiting block through a connector, so that the limiting block is slidably disposed in the sliding elongated hole.

5. The underground diaphragm wall replacement structure according to claim 1, characterized in that: A baffle parallel to the underground continuous wall is provided at the center of the upper end of the support plate, and supporting steel bars are installed on the baffle, with the length direction of the supporting steel bars perpendicular to the baffle.

6. The underground diaphragm wall replacement structure according to claim 1, characterized in that: The area on the support plate used for installing the replacement support block is provided with a partition.

7. The underground diaphragm wall replacement structure according to claim 1, characterized in that: The slot is a rectangular slot, which can be a through hole or a blind hole.

8. The underground continuous wall replacement support structure according to claim 2, characterized in that: The support column includes a base plate and at least one adjustable column body. The fixed section of the column body is provided with an equal height adjustment hole, and the telescopic section of the column body is provided with a corresponding fixing hole. The telescopic section is connected to the fixed section by a fixing pin.

9. The underground continuous wall support structure according to claim 8, characterized in that: The protruding end of the fixed pin is provided with a through hole, and an elastic blocking pin is installed in the through hole. The elastic blocking pin includes two movable pins disposed at both ends of the through hole, a limiting plate disposed on the adjacent side of the movable pin, and a spring connected between the two limiting plates. The length of the elastic blocking pin in the contracted state is less than or equal to the diameter of the fixed pin.

10. The underground continuous wall support structure according to claim 9, characterized in that: The end of the fixing pin is provided with a handle groove.

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