A multi-directional stabilizing and anti-displacement fixing structure for foundation pit dewatering pipes

Abstract

This utility model relates to the field of building construction, and in particular to a multi-directional stabilizing and anti-displacement fixing structure for foundation pit dewatering pipes. It includes an installation ring, with first mounting seats distributed in a circular pattern on the outer side of the installation ring. Each first mounting seat has a first ground nail at its bottom. Three first sleeves corresponding to the positions of the first mounting seats are connected to the inner side of the installation ring. Each first sleeve has a sliding connector, and each connector has a rotatable contact roller. A water pipe is positioned between the contact rollers, and the contact rollers contact the water pipes. Springs are installed between the connectors and the first sleeves. This utility model achieves adaptive thermal expansion and contraction of the pipe and dissipation of vibration energy through the spring-contact roller group. The three circumferential ground nails convert disturbance into soil resistance. Combined with the bottom flange and protective frame joint pressure-bearing system, it forms a three-dimensional defense network against water flow impact, mechanical collision, and soil deformation, achieving full-range coverage from soft soil and quicksand to hard rock fissure strata.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes. Background Technology

[0002] In foundation pit dewatering projects, the stability of dewatering pipes directly affects drainage efficiency and construction safety. Traditional fixing methods often use concrete-cast bases or simple supports, which have significant drawbacks: concrete bases require on-site casting and have a long curing period; rigid supports lack a buffer mechanism, making them prone to pipe deflection, joint leakage, or even breakage during soil settlement, groundwater flow impact, or equipment collisions. While cable-stayed fixing can partially resist lateral displacement, the tension of the cables cannot be adjusted in real time, and ground anchors are prone to pull-out and failure in soft soil foundations. Furthermore, local stress concentration often occurs at the pipe root due to silt infiltration or foundation settlement, accelerating pipe wall fatigue damage. Existing technologies attempt to clamp pipes with clamps, but still have two major drawbacks: first, single radial constraint cannot offset multi-directional composite loads; the coupling effect of groundwater buoyancy and soil shrinkage tension during heavy rain can still cause overall displacement; second, the lack of modular, quick-assembly and disassembly design results in low equipment reuse rates and difficulty in adapting to different pipe diameters and complex foundation pit terrain.

[0003] Therefore, in order to address the above problems, a multi-directional stabilizing and anti-deviation fixing structure for foundation pit dewatering pipes is now being developed. Utility Model Content

[0004] To overcome the shortcomings of existing technologies that attempt to clamp pipes with clamps, where single radial constraints cannot offset multi-directional composite loads, the coupling effect of groundwater buoyancy and soil shrinkage tension during heavy rain can still lead to overall displacement, and the lack of modular quick disassembly and assembly design results in low equipment reuse rate and difficulty in adapting to different pipe diameters and complex foundation pit terrain, this utility model provides a multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes.

[0005] The technical solution of this utility model is as follows: a multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes, including an installation ring. First mounting seats are distributed in a circular pattern on the outer side of the installation ring. Each first mounting seat has a first ground nail at its bottom. Three first sleeves corresponding to the positions of the first mounting seats are connected to the inner side of the installation ring. Connecting members are slidably connected inside each of the first sleeves. Contact rollers are rotatably connected to the inner side of each connecting member. Water pipes are arranged between the contact rollers, and the contact rollers contact the water pipes. Springs are provided between each connecting member and each of the first sleeves. The outer side of the mounting ring is connected to three second mounting seats, each of which is rotatably connected to a mounting frame. Each mounting frame is slidably connected to a sliding member. Each sliding member is rotatably connected to a third mounting seat. Each third mounting seat has a second ground nail at its bottom. A flange is installed at the lower part of the water pipe. A protective frame is slidably connected to the flange. Three second sleeves are connected to the outer side of the protective frame. Each second sleeve has a connecting member slidably connected inside it. A spring is also connected between the connecting member and the second sleeve. Each connecting member is rotatably connected to a contact roller.

[0006] As a further preferred option, the first mounting base is always an L-shaped structure.

[0007] As a further preferred option, each of the first mounting bases is provided with ribs.

[0008] As a further preferred embodiment, the second mounting base is located between adjacent first mounting bases.

[0009] As a further preferred embodiment, the outer side of the third mounting base is provided with anti-slip texture, which is designed to allow operators to step directly on it.

[0010] As a further preferred embodiment, the protective frame and the flange are connected by a detachable structure.

[0011] By adopting the above technical solution, compared with the prior art, this utility model has the following advantages: 1. This utility model achieves adaptive thermal expansion and contraction of pipeline and dissipation of vibration energy through spring contact roller group, and three sets of circumferential ground nails convert disturbance into soil resistance. Combined with the bottom flange and protective frame joint pressure bearing system, it forms a three-dimensional defense network against water flow impact, mechanical collision and soil deformation, and achieves full coverage of working conditions from soft soil quicksand to hard rock fissure strata.

[0012] 2. The modular design of this utility model allows the main structure to be quickly disassembled and reusable, and a single person can complete a stable deployment in complex geological conditions such as quicksand to rock formations. All spring damping systems provide multiple energy absorption paths, reduce the risk of fatigue in connecting parts, and extend the service life of the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the first partial cross-sectional three-dimensional structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the second partial cross-sectional three-dimensional structure of this utility model.

[0016] Figure 4 This is a cross-sectional three-dimensional structural diagram of the third part of this utility model.

[0017] Figure 5 This is a cross-sectional three-dimensional structural diagram of the fourth part of this utility model.

[0018] The labels in the diagram are as follows: 1-Mounting ring, 2-First mounting seat, 3-First ground spike, 4-Water pipe, 5-First sleeve, 6-Connector, 7-Contact roller, 8-Spring, 9-Second mounting seat, 10-Mounting frame, 11-Sliding part, 12-Third mounting seat, 13-Second ground spike, 14-Flange, 15-Protective frame, 16-Second sleeve. Detailed Implementation

[0019] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0020] A multi-directional stabilizing and anti-displacement fixing structure for foundation pit dewatering pipes, such as Figures 1-5As shown, the device includes a mounting ring 1. First mounting seats 2 are connected in a circular, distributed manner to the outer side of the mounting ring 1. Each first mounting seat 2 has an L-shaped structure and a first ground nail 3 at its bottom. Ribs are also provided on each first mounting seat. Three first sleeves 5, corresponding to the positions of the first mounting seats 2, are connected to the inner side of the mounting ring 1. Connecting pieces 6 are slidably connected inside each first sleeve 5. Contact rollers 7 are rotatably connected inside each connecting piece 6. Water pipes 4 are positioned between the contact rollers 7, and the contact rollers 7 contact the water pipes 4. Springs 8 are provided between each connecting piece 6 and each first sleeve 5. Three second mounting seats 9 are connected to the outer side of the mounting ring 1. The second mounting seats 9 are located between adjacent first mounting seats 2, and each second mounting seat 9 has a rotatable... The water pipe 4 is connected to a mounting frame 10, on which sliding parts 11 are slidably connected. A third mounting seat 12 is rotatably connected to the outside of each sliding part 11. A second ground nail 13 is provided at the bottom of each third mounting seat 12. Anti-slip texture is provided on the outside of each third mounting seat 12 to allow operators to step directly on it. A flange 14 is installed at the bottom of the water pipe 4. A protective frame 15 is slidably connected to the flange 14. The protective frame 15 and the flange 14 are connected in a detachable manner. Three second sleeves 16 are connected to the outside of the protective frame 15. A connector 6 is slidably connected inside each second sleeve 16. A spring 8 is also connected between the connector 6 and the second sleeve 16. A contact roller 7 is rotatably connected to the outside of each connector 6.

[0021] It should be noted that the working principle of the multi-directional stabilizing anti-deviation fixing structure of the foundation pit dewatering pipe 4 is based on a triple dynamic adaptive mechanism: radial elastic clamping, circumferential oblique locking, and axial impact protection. Through the coordinated action of various components, the verticality and positional stability of the pipeline are maintained under complex geological conditions and construction disturbances. During operation, the installation ring 1 is first coaxially fitted onto the outer wall of the water pipe 4 at a predetermined height. Three L-shaped first mounting seats 2, evenly distributed in a 120° ring on the outside of the installation ring 1, serve as the main load-bearing base. The first ground nails 3, vertically welded to their bottoms, are driven into the soil by hammering or hydraulic equipment until the rib plate is in complete contact with the ground surface. The rib plate, with its triangular stiffening structure, enhances the overturning bending moment resistance of the first mounting seats 2, ensuring that the main base does not settle or slide in soft soil or backfill strata. Three first sleeves 5 are welded to the inner side of the mounting ring 1 corresponding to the position of the first mounting seat 2. A axially sliding connector 6 is inserted into the first sleeve 5. The inner end of the connector 6 is rotatably connected to the contact roller 7 through a bearing. Under the pre-pressure of the internal spring 8, the contact roller 7 elastically presses the outer wall of the water pipe 4 radially in a 120° evenly distributed manner. The initial clamping force is adjusted by the pre-compression of the spring 8. This radial clamping mechanism allows the water pipe 4 to produce a small radial displacement when subjected to thermal expansion and contraction due to temperature changes. At the same time, the rolling friction of the contact roller 7 dissipates the lateral vibration energy caused by water flow pulsation or soil compression, avoiding stress concentration or fatigue cracking of the pipe wall caused by rigid clamping. If external disturbance (such as impact from adjacent equipment) attempts to push the water pipe 4 off-center, the offset force of the water pipe 4 will push the contact roller 7 to roll. The spring 8 is compressed via the connector 6. During the compression and energy storage process, the spring 8 absorbs the impact kinetic energy and symmetrically transmits the reaction force to the mounting ring 1 and the first mounting seat 2. The deep-buried ground nails provide rigid reaction force to constrain the displacement, allowing the water pipe 4 to quickly return to its original position. The circumferential stabilization system achieves secondary constraint through three second mounting seats 9 (located at a 60° angle between the first mounting seats 2) added to the outside of the mounting ring 1. Each second mounting seat 9 is hinged to a flip-up mounting frame 10. The inner side of the mounting frame 10 is provided with a sliding groove. The sliding part 11 embedded in the sliding groove can be manually pulled out and extended to adjust the length. The outer end of the sliding part 11 is hinged to a third mounting seat 12. The second ground nail 13 at the bottom of the third mounting seat 12 penetrates into the soil to form an oblique tension anchor point. The top surface of the third mounting seat 12 is densely packed with ground nails. The distributed anti-slip texture allows operators to directly step on it and apply force. The weight of the operator assists in pressing the anchors into place and ensures they are tightly engaged with the soil. These three sets of ring-shaped second anchors 13 form a circumferential constraint network, which complements the radial first anchors 3. When the groundwater level drops suddenly and causes soil contraction, the oblique component of the soil pulling back the anchors causes the sliding element 11 to retract along the groove of the mounting frame 10, effectively buffering the tensile impact. If the water flow impact causes the water pipe 4 to tilt, the tilting force is transmitted to the mounting ring 1 and then acts on the second mounting seat 9. The second mounting seat 9 decomposes the tilting moment into the retraction displacement of the sliding element 11 and the lifting tendency of the third mounting seat 12 through the mounting frame 10. During this process, the barbed structure of the second anchors 13 locks them in place, forcing the soil to resist the lifting by reverse compression.This transforms disturbance into geological resistance, enabling self-resetting. The bottom protective structure is designed to address the risk of pipe root displacement. The bottom flange 14 (diameter larger than the pipe diameter) of water pipe 4 serves as a pressure-bearing base. The protective frame 15 is vertically inserted into the groove of the flange 14 via bolts. Three second sleeves 16 (positions corresponding to the first sleeve 5 of the mounting ring 1) are welded to the outside of the protective frame 15. The sliding connector 6 inside the second sleeve 16 connects to the bearing-type contact roller 7 (structure same as the first sleeve 5). The combined weight of the flange 14 and the downward pressure of the contact roller 7 increase the resistance to pipe root settlement. When the pressure transmitted from the upper structure causes water pipe 4 to sink, the protective frame 15 transmits the pressure to the flange 14 and disperses it to the foundation pit, preventing local settlement. The pipe opening may crack, and it may also come into contact with the pit wall to form a guide. When heavy rain causes groundwater to surge, the rising water level acts on the contact roller 7 of the protective frame 15, pushing the water pipe 4 to float. At this time, the second ground nail 13 of the circumferential inclined tension system is pulled back, converting the buoyancy into soil compaction. If a sudden mechanical impact causes the water pipe 4 to shift laterally, the radial spring 8 compresses and dissipates energy, triggering the circumferential sliding part 11 to pull back. The ground nail group uses the oblique tension to immediately correct the axis of the water pipe 4. When the pipe root sinks slightly due to water erosion, the flange 14 compacts the base and applies radial constraint through the contact roller 7 of the protective frame 15, ensuring that the vertical deviation of the water pipe 4 is ≤0.5° throughout its entire life cycle, achieving full coverage of working conditions from soft soil and quicksand to hard rock fissure strata.

[0022] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A multi-directional stabilizing and anti-displacement fixing structure for foundation pit dewatering pipes, characterized in that: The system includes a mounting ring (1), on the outer side of which first mounting seats (2) are distributed in a circular pattern. Each first mounting seat has a first ground nail (3) at its bottom. Three first sleeves (5) corresponding to the positions of the first mounting seats (2) are connected to the inner side of the mounting ring (1). Each first sleeve (5) has a sliding connector (6) inside it. Each connector (6) has a rotatable contact roller (7) inside it. A water pipe (4) is positioned between the contact rollers (7), and the contact rollers (7) contact the water pipes (4). A spring (8) is positioned between each connector (6) and each first sleeve (5). Three second mounting seats (9) are connected to the outer side of the mounting ring (1). (9) The upper part is rotatably connected to the mounting frame (10), the mounting frame (10) is slidably connected to the sliding part (11), the outer side of the sliding part (11) is rotatably connected to the third mounting seat (12), the bottom of the third mounting seat (12) is provided with the second ground nail (13), the lower part of the water pipe (4) is installed with the flange (14), the flange (14) is slidably connected to the protective frame (15), the outer side of the protective frame (15) is connected to three second sleeves (16), the inner side of the second sleeve (16) is slidably connected to the connector (6), the connector (6) is also connected to the second sleeve (16) with a spring (8), the outer side of the connector (6) is rotatably connected to the contact roller (7).

2. The multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes as described in claim 1, characterized in that: The first mounting base (2) is an L-shaped structure.

3. The multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes as described in claim 1, characterized in that: Each of the first mounting bases is provided with ribs.

4. The multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes as described in claim 1, characterized in that: The second mounting base (9) is located between the adjacent first mounting base (2).

5. The multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes as described in claim 1, characterized in that: The outer side of the third mounting base (12) is provided with anti-slip texture, which is used to allow operators to step on it directly.

6. The multi-directional stable anti-displacement fixing structure for foundation pit dewatering pipes as described in claim 1, characterized in that: The protective frame (15) and the flange (14) are connected by a detachable structure.

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