A composite water-stopping structure for steel-cement-soil mixing wall and anchor cable joint
The combination structure of the expansion sealing ring and the grouting filling layer solves the leakage problem between the anchor cable hole and the pile joint, achieving effective waterproofing and repairable water-stopping effect under complex geological conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SECOND ENG BUREAU (XIAMEN) CONSTR CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-30
Smart Images
Figure CN224431508U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction technology, and in particular relates to a composite water-stopping structure for the joint between a steel-cement-soil mixing wall and an anchor cable. Background Technology
[0002] In the support system combining SMW (steel-cement-soil mixing wall) piles and recyclable anchor cables, the anchor cables need to pass through the SMW pile body to achieve anchoring. In traditional construction, leakage is prone to occur at the joint between the anchor cable hole and the pile body due to the following reasons:
[0003] Anchor cable drilling disrupts the continuity of the pile body, creating seepage channels;
[0004] After the anchor cable is installed, it is difficult to completely seal the gap between the hole wall and the anchor cable;
[0005] High water pressure in sand layers at high water levels increases the risk of seepage.
[0006] Therefore, it is necessary to provide a new composite water-stopping structure for steel-cement-soil mixing walls and anchor cable joints to solve the above-mentioned technical problems. Utility Model Content
[0007] The technical problem solved by this utility model is to provide a composite water-stopping structure for the joint between steel-cement-soil mixing wall and anchor cable, which forms a "double-layer water-stopping" system by combining the flexible sealing of the expansion water-stopping ring and the rigid seepage prevention of the grouting filling layer. This system can effectively address problems such as anchor cable borehole damage and incomplete gap sealing, and can reduce the risk of leakage in complex geological conditions such as high water level sand layers.
[0008] To solve the above technical problems, the composite water-stopping structure of steel-cement-soil mixing wall and anchor cable joint provided by this utility model includes: a base, a wall and multiple anchor cable bodies, wherein the wall is stacked and installed on the top of the base, and multiple H-beams are pre-embedded in the base and the wall.
[0009] The base and wall are provided with multiple pre-set holes, each corresponding to a different anchor cable.
[0010] One end of the anchor cable body passes through the hole wall and is adapted to the hole wall, and the hole wall and the anchor cable body are sealed by a water-stopping mechanism;
[0011] The water-stopping mechanism includes an expansion water-stopping ring, which is installed inside the borehole wall. The outer and inner walls of the expansion water-stopping ring are tightly fitted to the inner wall of the borehole wall and the outer wall of the anchor cable body, respectively.
[0012] As a further embodiment of this utility model, the water-stopping mechanism also includes multiple grouting pipes and multiple disassembly and assembly components. The multiple grouting pipes correspond one-to-one with multiple hole walls. The grouting pipes are installed on the wall, and the bottom end of the grouting pipes extends into the hole wall.
[0013] As a further embodiment of this utility model, a filling layer is provided between the hole wall and the anchor cable body, a lifting hole is provided on the H-beam, and multiple grouting pipes correspond one-to-one with multiple disassembly and assembly components. The grouting pipes are connected to and installed with grout discharge pipes through the disassembly and assembly components.
[0014] As a further embodiment of this utility model, the disassembly and assembly assembly includes a first fixing collar, a second fixing collar, multiple T-shaped inserts, a rotating ring, a connecting ring, multiple round rods, and multiple arc-shaped inserts. The first fixing collar is fixedly sleeved on the other end of the grouting pipe, and the second fixing collar is fixedly sleeved on one end of the grout discharge pipe.
[0015] As a further embodiment of this utility model, multiple T-shaped inserts are arranged in a circular array on a first fixed collar. One end of each T-shaped insert passes through a second fixed collar and is slidably connected to the second fixed collar. The rotating ring is rotatably fitted onto the second fixed collar. The connecting ring is installed on the rotating ring. Multiple round rods are arranged in a circular array on the inner wall of the connecting ring. Multiple arc-shaped inserts are respectively installed on multiple round rods. The multiple arc-shaped inserts pass through multiple T-shaped inserts and are slidably connected to the multiple T-shaped inserts. Multiple handles are installed on the outer wall of the connecting ring.
[0016] As a further embodiment of this utility model, a sealing groove is provided on the inner wall of the other end of the grouting pipe, and a sealing ring is installed at one end of the grout discharge pipe, the sealing ring engaging with the sealing groove.
[0017] Compared with related technologies, the composite water-stopping structure of steel-cement-soil mixing wall and anchor cable joint provided by this utility model has the following beneficial effects:
[0018] 1. This utility model forms a "double-layer water-stopping" system by combining the flexible sealing of the expansion water-stopping ring with the rigid seepage prevention of the grouting filling layer. It can effectively deal with problems such as anchor cable borehole damage and incomplete gap sealing, and can reduce the risk of leakage under complex geological conditions such as high water level sand layers.
[0019] 2. This utility model utilizes a pre-installed grouting pipe and a detachable grout discharge pipe (which can be quickly assembled and disassembled using components such as a fixing collar and a T-shaped insert), allowing for supplementary grouting when leakage occurs later, thus solving the defect that traditional water-stopping methods cannot repair leakage after it occurs. Attached Figure Description
[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0022] Figure 2This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0023] Figure 3 for Figure 1 A magnified structural diagram of part A in the middle;
[0024] Figure 4 This is a schematic diagram of the disassembly and assembly components of this utility model;
[0025] Figure 5 This is a schematic diagram of the assembly of the grouting pipe, grout discharge pipe and sealing ring of this utility model.
[0026] In the diagram: 1. Base; 2. Wall; 3. H-beam; 4. Anchor cable; 5. Expansion sealing ring; 6. Grouting pipe; 7. Filling layer; 8. Lifting hole; 9. Grout drain pipe; 10. Fixing collar one; 11. Fixing collar two; 12. T-shaped insert; 13. Rotating ring; 14. Connecting ring; 15. Round rod; 16. Arc-shaped insert; 17. Handle; 18. Sealing groove; 19. Sealing ring. Detailed Implementation
[0027] Please refer to the following: Figures 1 to 5 ,in, Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 for Figure 1 A magnified structural diagram of part A in the middle; Figure 4 This is a schematic diagram of the disassembly and assembly components of this utility model; Figure 5 This is a schematic diagram of the assembly of the grouting pipe, grout discharge pipe, and sealing ring of this utility model. The composite water-stopping structure of the steel-cement-soil mixing wall and anchor cable joint includes: a base 1, a wall 2, and multiple anchor cable bodies 4. The wall body 2 is stacked and installed on the top of the base 1. Multiple H-beams 3 are pre-embedded in both the base 1 and the wall 2.
[0028] The base 1 and the wall 2 are provided with multiple pre-set holes, each of which corresponds to a multiple anchor cable 4.
[0029] One end of the anchor cable body 4 passes through the hole wall and is adapted to the hole wall, and the hole wall and the anchor cable body 4 are sealed by a water-stopping mechanism;
[0030] The water-stopping mechanism includes an expansion water-stopping ring 5, which is installed inside the hole wall. The outer wall and inner wall of the expansion water-stopping ring 5 are tightly fitted to the inner wall of the hole wall and the outer wall of the anchor cable body 4, respectively.
[0031] The water-stopping mechanism also includes multiple grouting pipes 6 and multiple disassembly and assembly components. The multiple grouting pipes 6 correspond one-to-one with multiple hole walls. The grouting pipes 6 are installed on the wall 2, and the bottom end of the grouting pipes 6 extends into the hole wall.
[0032] A filling layer 7 is provided between the hole wall and the anchor cable body 4. A lifting hole 8 is provided on the H-beam 3. Multiple grouting pipes 6 correspond one-to-one with multiple disassembly and assembly components. The grouting pipes 6 are connected to the grout discharge pipes 9 through the disassembly and assembly components.
[0033] The assembly and disassembly assembly includes a first fixing collar 10, a second fixing collar 11, multiple T-shaped inserts 12, a rotating ring 13, a connecting ring 14, multiple round rods 15, and multiple arc-shaped inserts 16. The first fixing collar 10 is fixedly sleeved on the other end of the grouting pipe 6, and the second fixing collar 11 is fixedly sleeved on one end of the grout discharge pipe 9.
[0034] During installation, the grout discharge pipe 9 and the grout injection pipe 6 are spliced and fitted together, and the sealing ring 19 is inserted into the sealing groove 18 to form a seal. At the same time, the first fixing ring 10 and the second fixing ring 11 are spliced and fitted together, and the T-shaped insert rod 12 passes through the second fixing ring 11. Then, under the action of the rotating ring 13, the connecting ring 14 is rotated by rotating the handle 17. The connecting ring 14 drives the arc-shaped insert rod 16 to pass through the T-shaped insert rod 12 to form a seal.
[0035] Multiple T-shaped inserts 12 are arranged in a circular array on a fixed collar 10. One end of each T-shaped insert 12 passes through a fixed collar 2 11 and is slidably connected to the fixed collar 2 11. A rotating ring 13 is rotatably fitted on the fixed collar 2 11. A connecting ring 14 is installed on the rotating ring 13. Multiple round rods 15 are arranged in a circular array on the inner wall of the connecting ring 14. Multiple arc-shaped inserts 16 are respectively installed on the multiple round rods 15. Multiple arc-shaped inserts 16 pass through the multiple T-shaped inserts 12 and are slidably connected to the multiple T-shaped inserts 12. Multiple handles 17 are installed on the outer wall of the connecting ring 14.
[0036] A sealing groove 18 is provided on the inner wall of the other end of the grouting pipe 6, and a sealing ring 19 is installed on one end of the grout discharge pipe 9. The sealing ring 19 engages with the sealing groove 18.
[0037] The working principle of the composite water-stopping structure of steel-cement-soil mixing wall and anchor cable joint provided by this utility model is as follows:
[0038] First step: When a small amount of groundwater seeps into the anchor cable hole, the expansion sealing ring 5 made of water-swellable rubber (SWR) will quickly absorb water and expand, with an expansion rate of ≥300%. Since the inner diameter of the expansion sealing ring 5 is slightly smaller than the diameter of the anchor cable body 4 (using interference fit), after expansion, it can tightly fit the inner wall of the hole and the outer wall of the anchor cable body 4, directly blocking the initial seepage path and forming the first flexible seepage barrier.
[0039] The second step: inject ultrafine cement grout (with 5% water glass added to accelerate solidification) into the gap between the hole wall and the anchor body 4 through the grouting pipe 6 pre-embedded in the wall 2. The grout fills the annular gap and the area between the inner and outer water-stop structures under a pressure of 0.3 to 0.5 MPa, forming a rigid filling layer 7. This filling layer can not only seal the remaining gaps, but also penetrate into the micro-cracks in the pile body, forming a second rigid anti-seepage defense line.
[0040] The third step: If the joints become loose due to soil deformation later, grouting can be supplemented through the grouting pipe 6. The grout is injected through the grout discharge pipe 9 (quickly connected by disassembly and assembly components) to fill the newly generated gaps in time, restore the water-stopping effect, and achieve dynamic maintenance of the seepage prevention performance.
[0041] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.
[0042] 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, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.
Claims
1. A composite water-stopping structure for the joint between a steel-cement-soil mixing wall and an anchor cable, characterized in that, include: The base, walls, and multiple anchor cables are provided. The walls are stacked and installed on top of the base, and multiple H-beams are pre-embedded in both the base and the walls. The base and wall are provided with multiple pre-set holes, each corresponding to a different anchor cable body. One end of the anchor cable body passes through the hole wall and is adapted to the hole wall, and the hole wall and the anchor cable body are sealed by a water-stopping mechanism; The water-stopping mechanism includes an expansion water-stopping ring, which is installed inside the borehole wall. The outer and inner walls of the expansion water-stopping ring are tightly fitted to the inner wall of the borehole wall and the outer wall of the anchor cable body, respectively.
2. The composite water-stopping structure of the steel-cement-soil mixing wall and anchor cable joint according to claim 1, characterized in that: The water-stopping mechanism also includes multiple grouting pipes and multiple disassembly and assembly components. The multiple grouting pipes correspond one-to-one with multiple hole walls. The grouting pipes are installed on the wall, and the bottom end of the grouting pipes extends into the hole wall.
3. The composite water-stopping structure of the steel-cement-soil mixing wall and anchor cable joint according to claim 2, characterized in that: A filling layer is provided between the hole wall and the anchor cable body. A lifting hole is provided on the H-beam. Multiple grouting pipes correspond one-to-one with multiple disassembly and assembly components. The grouting pipes are connected to the grout discharge pipes through the disassembly and assembly components.
4. The composite water-stopping structure of the steel-cement-soil mixing wall and anchor cable joint according to claim 3, characterized in that: The assembly and disassembly components include a first fixing collar, a second fixing collar, multiple T-shaped inserts, a rotating ring, a connecting ring, multiple round rods, and multiple arc-shaped inserts. The first fixing collar is fixedly sleeved on the other end of the grouting pipe, and the second fixing collar is fixedly sleeved on one end of the grout discharge pipe.
5. The composite water-stopping structure of the steel-cement-soil mixing wall and anchor cable joint according to claim 4, characterized in that: Multiple T-shaped inserts are arranged in a circular array on a fixed collar one. One end of each T-shaped insert passes through a fixed collar two and is slidably connected to the fixed collar two. A rotating ring is rotatably fitted on the fixed collar two. A connecting ring is installed on the rotating ring. Multiple round rods are arranged in a circular array on the inner wall of the connecting ring. Multiple arc-shaped inserts are respectively installed on multiple round rods. Multiple arc-shaped inserts pass through multiple T-shaped inserts and are slidably connected to the multiple T-shaped inserts. Multiple handles are installed on the outer wall of the connecting ring.
6. The composite water-stopping structure of the steel-cement-soil mixing wall and anchor cable joint according to claim 3, characterized in that: A sealing groove is provided on the inner wall of the other end of the grouting pipe, and a sealing ring is installed at one end of the grout discharge pipe, the sealing ring engaging with the sealing groove.