Slope pile-anchor cooperative supporting structure of avoiding construction and supporting method

Abstract

The application discloses a kind of slope pile anchor cooperative support structure and supporting method for avoiding structure in the technical field of slope support engineering, including fixed tube, several steel cables equidistantly distributed outside fixed tube, for fixing steel cable outside fixed tube with butt joint mechanism, the butt joint mechanism includes two butt joint rings on the outside of fixed tube, two The butt joint ring sidewall is fixedly connected with base on upper side and lower side respectively, the base is fixedly connected with limit shaft, the base is slidably connected with sliding part, the steel cable is slidably connected through the cavity formed by sliding part, limit shaft and lug plate, the present application is locked by cam linkage structure, while driving sliding part to lock steel cable, simultaneously push positioning rod to tightly fixed tube outer wall, realize the synchronization of steel cable locking and butt joint ring positioning, greatly improve the preloading efficiency of pile anchor component, and simultaneously avoid the problem of butt joint ring slip, steel cable misplacement in the process of steel cable into pile slot.

Description

Technical Field

[0001] This invention relates to the field of slope protection engineering technology, specifically to a slope pile-anchor collaborative support structure and support method for avoiding structures. Background Technology

[0002] In slope treatment projects around old urban factories and residential areas, there are often numerous existing pipelines, old foundations, underground structures, and other obstacles distributed beneath the slope and in the shallow underground layer. Conventional pile-anchor support systems are prone to problems such as anchor bolts penetrating structures and anchor cables conflicting with underground pipelines. This not only damages existing municipal facilities but also significantly increases the construction risks and subsequent maintenance costs of slope support. Chinese patent application number CN202221789643.3 discloses a pile-anchor connection structure for slope support. This solution achieves the connection between the anchor cable and the pile body by setting the anchor slot on the side wall of the support pile, which improves the convenience of pile-anchor connection to a certain extent. However, the anchor cable position of this structure is completely fixed, and it is impossible to flexibly adjust the extension spacing and arrangement angle of the steel cable according to the distribution of underground structures on site. When encountering shallow obstacles, it is impossible to quickly avoid them, and the problem of collision between the anchor cable and the structure is very likely to occur. Chinese patent application number CN202310456789.1 discloses an adjustable slope pile anchor support device. This solution uses a split clamp to bind multiple anchor cables to the outside of the support pipe, achieving initial adjustment of the anchor cable position. However, this clamp structure relies solely on bolt locking for fixation. During the process of the anchor cables entering the pile groove, the clamp is prone to slippage and cable misalignment due to soil friction. This not only fails to guarantee the preset clearance distance but also leads to chaotic cable arrangement, significantly reducing the overall stress performance of the support structure. Chinese patent application number CN202123298765.7 discloses an anchor cable positioning and installation structure for slope support. This scheme achieves the equidistant arrangement of multiple steel cables by fitting a positioning ring on the anchor cable. However, the positioning ring can only achieve single-point positioning of a single anchor cable. There is a lack of a coordinated fixing structure between multiple steel cables. During the grouting process, the steel cables are easily deflected by the impact of cement grout, which eventually causes the force path of some steel cables to intersect with the underground structure, making it impossible to achieve the support target of precise avoidance.

[0003] Based on this, existing pile-anchor support structures generally suffer from insufficient flexibility in adjusting the position of steel cables, poor reliability of coordinated fixing of multiple steel cables, and difficulty in accurately avoiding underground structures under complex working conditions, which cannot meet the construction needs of slope treatment in densely built-up urban areas. This invention designs a slope pile-anchor coordinated support structure and support method that avoids structures in order to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a slope pile-anchor coordinated support structure and support method for avoiding structures, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a slope pile-anchor collaborative support structure for avoiding structures, comprising a fixed pipe, several steel cables equally distributed on the outside of the fixed pipe, and a docking mechanism for fixing the steel cables to the outside of the fixed pipe. The docking mechanism includes two docking rings docking to the outside of the fixed pipe. The upper and lower sides of the sidewalls of the two docking rings are respectively fixedly connected to bases. A limiting shaft is fixedly connected to the base, and a sliding member is slidably connected to the base. The steel cable slides through the cavity formed by the sliding member, the limiting shaft, and the protruding plate. A locking component is provided on the sidewall of the docking ring. The locking component is used to adjust the position of the sliding member inside the base to fix the steel cable.

[0006] As a further embodiment of the present invention, the locking assembly includes a docking rod disposed on one side of the docking ring, a rotating seat fixedly connected to the docking ring being sleeved on the docking rod, cams being fixedly connected to both ends of the docking rod, a telescopic member being fixedly connected inside the base, a sliding end of the telescopic member being fixedly connected to a sliding member, a reset spring for resetting being sleeved on the telescopic member, and a protrusion for docking with the cams being fixedly connected to the bottom of the telescopic member, one end of the protrusion passing through the base and disposed on the outside of the base.

[0007] As a further embodiment of the present invention, the docking rod is provided with a distance fixing component, the distance fixing component includes a fixed rod that docks with the docking rod, one end of the fixed rod is fixedly connected to a docking buckle, and one end of the docking buckle is slidably connected to a telescopic rod.

[0008] As a further embodiment of the present invention, a positioning rod is slidably connected inside the docking ring, one end of the positioning rod passes through the docking ring and contacts the cam, and a strong spring for resetting the positioning rod is fixedly connected inside the docking ring.

[0009] As a further embodiment of the present invention, a latch is fixedly connected to the top of the docking ring, and a groove for docking with the latch is provided at the bottom of the docking ring.

[0010] As a further embodiment of the present invention, a non-slip pad with a high coefficient of friction is fixedly connected to the inner wall of the docking ring, and the top of the base is arc-shaped.

[0011] As a further embodiment of the present invention, each of the steel cables is fitted with a smooth protective sleeve at its bottom.

[0012] A method for combined pile-anchor support of slopes, comprising the following steps: Step 1: Slide several steel cables through the cavity formed by the sliding component, the limiting shaft, and the protruding plate on the base; Step 2: Connect the steel cables sequentially through multiple docking mechanisms at specified intervals; Step 3: Connect the docking mechanisms on both sides to the outside of the fixed tube, thereby fixing the steel cable to the outside of the fixed tube; Step 4: Insert the fixing pipe and steel cable into the pile trench together, and then inject cement into the fixing pipe until the pile trench is filled and fixed.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves independent locking and flexible position adjustment of multiple steel cables on the outside of the fixed pipe through the coordinated operation of the split docking ring and locking components. Based on the measured distribution data of underground structures on site, the extension spacing and arrangement angle of a single steel cable can be quickly adjusted. Compared with the traditional fixed arrangement of pile anchor structures, the success rate of avoiding underground pipelines, old foundations and other structures is improved, and the damage to existing facilities during support construction is effectively avoided.

[0014] This invention utilizes a cam-linked locking structure to simultaneously drive the sliding component to lock the steel cable and push the positioning rod against the outer wall of the fixed tube. This achieves simultaneous completion of steel cable locking and docking ring positioning, eliminating the need to tighten multiple bolts and significantly improving the pre-assembly efficiency of the pile anchor components. It also avoids problems such as docking ring slippage and steel cable misalignment during the process of the steel cable entering the pile groove. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the docking mechanism structure; Figure 3 This is a schematic diagram of the front structure of the docking ring; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the spacing component structure; Figure 6 A schematic diagram showing the sliding state of the fixed rod driving the positioning rod; Figure 7 This is a flowchart of the method of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Fixed tube; 2. Steel cable; 3. Docking mechanism; 4. Distance fixing component; 41. Docking buckle; 42. Fixed rod; 43. Telescopic rod; 5. Docking ring; 6. Lock; 7. Base; 8. Sliding component; 9. Limiting shaft; 10. Protruding plate; 11. Cam; 12. Docking rod; 13. Rotating seat; 14. Return spring; 15. Telescopic component; 16. Positioning rod. Detailed Implementation

[0018] Please see Figure 1-7 This invention provides a technical solution: a slope pile-anchor collaborative support structure for avoiding structures, including a fixed pipe 1, several steel cables 2 equidistantly distributed on the outside of the fixed pipe 1, and a docking mechanism 3 for fixing the steel cables 2 to the outside of the fixed pipe 1. The docking mechanism 3 includes two docking rings 5 ​​docking to the outside of the fixed pipe 1. The upper and lower sides of the sidewalls of the two docking rings 5 ​​are respectively fixedly connected to bases 7. The bases 7 are fixedly connected to limiting shafts 9. The bases 7 are slidably connected to sliding members 8. The steel cables 2 slide through the cavity formed by the sliding members 8, the limiting shafts 9, and the protruding plate 10. The sidewalls of the docking rings 5 ​​are provided with locking components. The locking components are used to adjust the position of the sliding members 8 inside the bases 7 to fix the steel cables 2. See Figures 1-2 During anchor bolt installation, four steel cables 2 are sequentially threaded into the cavity formed by the sliding member 8, the limiting shaft 9, and the protruding plate 10 on the connecting ring 5. The positions of the multiple connecting rings 5 ​​on the steel cables 2 are adjusted according to the estimated spacing required for installation. The connecting rings 5 ​​on both sides are then connected to the outside of the fixing pipe 1 to form... Figure 1 The installation structure shown in the invention uses a locking assembly to adjust the position of the sliding member 8 on the base 7, thereby changing the size of the cavity formed by the sliding member 8, the limiting shaft 9, and the protruding plate 10. This fixes the steel cable 2 inside the cavity, improving the efficiency of installing the steel cable 2 and the fixing pipe 1. Traditional anchor installation requires placing several internal supports (equivalent to docking rings 5) on the fixing pipe 1 and then binding the steel cable 2 with external ropes, which is inefficient and the steel cable 2 is not neatly bound and is prone to loosening. The locking assembly proposed in this invention directly fixes the steel cable 2 to the docking ring 5 and fixes the docking ring 5 to the fixing pipe 1 through a two-sided docking method, effectively improving the installation efficiency and stability of the anchor.

[0019] The locking assembly includes a docking rod 12 disposed on one side of the docking ring 5. A rotating seat 13 fixedly connected to the docking ring 5 is sleeved on the docking rod 12. Cams 11 are fixedly connected to both ends of the docking rod 12. A telescopic member 15 is fixedly connected inside the base 7. The sliding end of the telescopic member 15 is fixedly connected to a sliding member 8. A reset spring 14 for resetting is sleeved on the telescopic member 15. A protrusion 10 for docking with the cams 11 is fixedly connected to the bottom of the telescopic member 15. One end of the protrusion 10 passes through the base 7 and is disposed on the outside of the base 7. See Figures 2-4 When locking, the drive rod 12 rotates, gradually rotating the protruding end of the cam 11 to the position of contact with the cam plate 10. As it rotates, it pushes the cam plate 10 to compress the return spring 14 and slide. The cam plate 10 drives the sliding member 8 to slide synchronously to the position of the limit shaft 9, compressing the internal cavity of the sliding member 8 and the limit shaft 9, so that the sliding member 8 gradually contacts the steel cable 2 and fixes the steel cable 2 inside the cavity, thus fixing the steel cable 2. Under the pressure, the cam 11 cannot return to its original position, achieving a stable fixing effect.

[0020] The docking rod 12 is provided with a distance fixing component 4. The distance fixing component 4 includes a fixed rod 42 that docks with the docking rod 12. One end of the fixed rod 42 is fixedly connected to a docking buckle 41, and one end of the docking buckle 41 is slidably connected to a telescopic rod 43. See Figure 5 When rotating the docking rod 12, first connect the docking buckle 41 at the end of the fixed rod 42 to the docking rod 12, then adjust the telescopic rod 43 to extend to the required installation length, and drive the docking rod 12 to rotate by rotating the fixed rod 42. Then connect the docking buckle 41 at the end of the telescopic rod 43 to the docking rod 12 on another docking ring 5. The installation position of the docking mechanism 3 can be fixed according to the specified installation spacing. The surface of the fixed rod 42 is coated with scale lines, and the scale lines also exist on the surface of the telescopic rod 43. The spacing between adjacent docking rings 5 ​​can be determined by the sum of the scale numbers on the surfaces of the fixed rod 42 and the telescopic rod 43.

[0021] A positioning rod 16 is slidably connected inside the docking ring 5. One end of the positioning rod 16 passes through the docking ring 5 and contacts the cam 11. A strong spring for resetting the positioning rod 16 is fixedly connected inside the docking ring 5. See Figure 3 , Figure 6When the fixed rod 42 drives the cam 11 to rotate, the fixed rod 42 rotates by an angle θ, causing the protruding end of the cam 11 to rotate to the position of contact with the positioning rod 16 and gradually push the positioning rod 16 to slide along the F direction, so that one end of the positioning rod 16 passes through the docking ring 5 and contacts the outer wall of the fixed tube 1. The pressure of the positioning rod 16 makes the docking ring 5 firmly fixed to the surface of the fixed tube 1, strengthening the fixed connection between the fixed tube 1 and the steel cable 2. Since the anchor needs to be manually pushed into the pile groove on the slope during installation, the stable connection between the fixed tube 1 and the steel cable 2 can prevent relative slippage.

[0022] The top of the docking ring 5 is fixedly connected to a latch 6, and the bottom of the docking ring 5 is provided with a groove for docking with the latch 6; See Figure 3 When the two docking rings 5 ​​are docked, the latch 6 on the top of one docking ring 5 docks with the groove at the bottom of the other docking ring 5 to form a fixed connection, so that the two docking rings 5 ​​can be fixed after docking.

[0023] A high-friction anti-slip pad is fixedly connected to the inner wall of the docking ring 5. The top of the base 7 is arc-shaped. The anti-slip pad increases the friction force and further prevents the docking ring 5 from sliding relative to the fixed pipe 1. When the arc-shaped base 7 slides inside the pile groove, the surface area that comes into contact with the inner wall of the pile groove and generates resistance is smaller.

[0024] Each of the steel cables 2 has a smooth protective sleeve fitted to its bottom. The protective sleeve replaces the surface plane of the steel cable 2 in contact with the inner wall of the pile groove, effectively preventing the steel cable 2 from inserting into the inner layer of the pile groove when it slides inside the pile groove.

[0025] A method for combined pile-anchor support of slopes, comprising the following steps: Step 1: Slide several steel cables 2 through the cavity formed by the sliding part 8, the limiting shaft 9, and the convex plate 10 on the base 7 respectively; Step 2: Connect the steel cables 2 sequentially through multiple docking mechanisms 3 at specified intervals; Step 3: Connect the docking mechanisms 3 on both sides to the outside of the fixed pipe 1, thereby fixing the steel cable 2 to the outside of the fixed pipe 1; Step 4: Insert the fixing pipe 1 and the steel cable 2 into the pile trench together, and then inject cement into the fixing pipe 1 until the pile trench is filled and fixed.

[0026] Working principle: During anchor bolt installation, four steel cables 2 are sequentially threaded into the cavity formed by the sliding member 8, the limiting shaft 9, and the protruding plate 10 on the connecting ring 5. The multiple connecting rings 5 ​​are adjusted to their positions on the steel cables 2 according to the estimated spacing required for installation. The connecting rings 5 ​​on both sides are then connected to the outside of the fixing pipe 1 to form... Figure 1 The installation structure shown; When locking, drive the docking rod 12 to rotate, gradually rotating the protruding end of the cam 11 to the position of contact with the cam plate 10. As it rotates, it pushes the cam plate 10 to compress the return spring 14 and slide. The cam plate 10 drives the sliding member 8 to slide synchronously to the position of the limit shaft 9, compressing the internal cavity of the sliding member 8 and the limit shaft 9, so that the sliding member 8 gradually contacts the steel cable 2 and fixes the steel cable 2 inside the cavity, thus fixing the steel cable 2. Under the pressure, the cam 11 cannot return to its original position. When rotating the docking rod 12, first connect the docking buckle 41 at the end of the fixed rod 42 to the docking rod 12, then adjust the telescopic rod 43 to extend to the required installation length. Drive the docking rod 12 to rotate by rotating the fixed rod 42, and then connect the docking buckle 41 at the end of the telescopic rod 43 to the docking rod 12 on another docking ring 5. The installation position of the docking mechanism 3 can be fixed according to the specified installation spacing.

Claims

1. A slope pile-anchor collaborative support structure for avoiding structures, comprising a fixed pipe (1), a plurality of steel cables (2) equidistantly distributed on the outside of the fixed pipe (1), and a docking mechanism (3) for fixing the steel cables (2) to the outside of the fixed pipe (1), characterized in that: The docking mechanism (3) includes two docking rings (5) docking with the outside of the fixed tube (1). The upper and lower sides of the two docking rings (5) are respectively fixedly connected to the base (7). The base (7) is fixedly connected to the limiting shaft (9). The base (7) is slidably connected to the sliding member (8). The steel cable (2) slides through the cavity formed by the sliding member (8), the limiting shaft (9), and the protrusion plate (10). The side wall of the docking ring (5) is provided with a locking component. The locking component is used to adjust the position of the sliding member (8) inside the base (7) to fix the steel cable (2).

2. The slope pile-anchor coordinated support structure for avoiding structures according to claim 1, characterized in that: The locking assembly includes a docking rod (12) disposed on one side of the docking ring (5). A rotating seat (13) fixedly connected to the docking ring (5) is sleeved on the docking rod (12). Cams (11) are fixedly connected to both ends of the docking rod (12). A telescopic member (15) is fixedly connected inside the base (7). The sliding end of the telescopic member (15) is fixedly connected to the sliding member (8). A reset spring (14) for resetting is sleeved on the telescopic member (15). A convex plate (10) for docking with the cam (11) is fixedly connected to the bottom of the telescopic member (15). One end of the convex plate (10) passes through the base (7) and is disposed on the outside of the base (7).

3. The slope pile-anchor coordinated support structure for avoiding structures according to claim 2, characterized in that: The docking rod (12) is provided with a distance fixing component (4), which includes a fixed rod (42) that docks with the docking rod (12). One end of the fixed rod (42) is fixedly connected to a docking buckle (41), and one end of the docking buckle (41) is slidably connected to a telescopic rod (43).

4. A slope pile-anchor coordinated support structure for avoiding structures according to claim 2, characterized in that: A positioning rod (16) is slidably connected inside the docking ring (5). One end of the positioning rod (16) passes through the docking ring (5) and contacts the cam (11). A strong spring for resetting the positioning rod (16) is fixedly connected inside the docking ring (5).

5. A slope pile-anchor coordinated support structure for avoiding structures according to claim 1, characterized in that: The top of the docking ring (5) is fixedly connected to a buckle (6), and the bottom of the docking ring (5) is provided with a groove for docking with the buckle (6).

6. A slope pile-anchor coordinated support structure for avoiding structures according to claim 1, characterized in that: The inner wall of the docking ring (5) is fixedly connected with an anti-slip pad with a high coefficient of friction, and the top of the base (7) is arc-shaped.

7. A slope pile-anchor coordinated support structure for avoiding structures according to claim 1, characterized in that: Each of the steel cables (2) has a smooth protective sleeve fitted to its bottom.

8. A method for slope pile-anchor coordinated support, applicable to the slope pile-anchor coordinated support structure for the avoidance structure described in any one of claims 1-7, characterized in that, The method includes the following steps: Step 1: Slide several steel cables (2) through the cavity formed by the sliding part (8), the limiting shaft (9), and the convex plate (10) on the base (7); Step 2: Connect the steel cables (2) sequentially through multiple docking mechanisms (3) at specified intervals; Step 3: Connect the docking mechanisms (3) on both sides to the outside of the fixed tube (1), thereby fixing the steel cable (2) to the outside of the fixed tube (1); Step 4: Insert the fixing pipe (1) and steel cable (2) into the pile trench together, and then inject cement into the fixing pipe (1) until the pile trench is filled and fixed.

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