Recyclable PRC support pile and construction technology

Abstract

The invention relates to the technical field of support piles, in particular to a recoverable PRC support pile and a construction technology, the recoverable PRC support pile comprises a pile body, the bottom end of the pile body is fixedly connected with a bottom plate, the bottom plate is a steel plate permanently installed at the bottom of the pile, when the pile body needs to be recovered, a guide rope is used for guiding and replacing a lifting rope, the guide rope is a nylon rope, and the lifting rope is a steel strand; the two ends of the steel strand are fixed to hoisting equipment, the pile body is hoisted and recycled, upward pulling force is transmitted to the steel plate at the bottom of the pile through the steel strand, the steel plate extrudes and lifts the pile body to be slowly lifted, the PRC pile is in a pressed state all the time, and the problem that concrete is prone to cracking due to tension in the pulling-out process is solved; meanwhile, in consideration of durability and reusability of the steel strand, a nylon rope with good corrosion resistance is reserved in the pile when the steel strand is not used, and the steel strand is guided to replace the nylon rope to hoist the pile when the steel strand is used, so that reusability of the PRC support pile is realized.

Description

Technical Field

[0001] The invention relates to the technical field of supporting piles, and in particular to a recyclable PRC supporting pile and a construction process. Background Art

[0002] In the current construction industry, the materials of foundation pit support piles mainly include concrete, cement soil and steel. For steel structure foundation pit support piles, due to the high cost of steel, the recycling of steel is usually considered during the design and construction process. For example, after the construction is completed, the steel can be recycled through deep-drawn steel sheet piles, construction piles, etc. For concrete support piles, since they are usually cast on site and have a large deadweight, a set of mature technologies and methods have not yet been formed.

[0003] Although steel structure support piles can be recycled after construction, in the actual construction process, due to various reasons such as structural deformation, loss and corrosion, the number of times they can be reused is limited, generally only 3 to 4 times. The utilization rate is still low, and there is a large problem of resource waste.

[0004] As for concrete support piles, they are currently basically used once. Considering that foundation pit support piles are temporary projects, one-time use obviously causes unnecessary waste of resources and is not in line with the concept of green environmental protection and sustainable development.

[0005] In this regard, the prior art, such as the Chinese patent document CN114809001B, discloses a recyclable assembled PRC support structure and a support process. Although the assembled PRC support structure, as well as the node method and recycling method of the prefabricated crown beam in the support structure, still adopts the conventional lifting and pulling method for the recycling of the PRC support pile body itself. Due to the heavy deadweight of the PRC support pile body, it is not easy to pull it out directly. At the same time, the concrete is easily cracked by tension during the pulling out process, which makes it difficult to reuse the PRC pile.

[0006] Therefore, how to improve the recycling rate of concrete foundation pit support piles and reduce resource waste is an important issue that my country's construction industry needs to pay attention to and solve. Summary of the invention

[0007] In view of this, the purpose of the present invention is to propose a recyclable PRC support pile and a construction process and a support process, so as to solve all or one of the problems in the background technology.

[0008] Based on the above purpose, the present invention provides a recyclable PRC support pile, including a pile body:

[0009] The bottom end of the pile body is fixedly connected to a bottom plate, and a fixing ring is provided on the top surface of the bottom plate;

[0010] Fixed storage hooks are provided on both sides of the top of the pile body;

[0011] A guide rope is provided in the hollow interior of the pile body, and the guide rope is sequentially passed through the fixed receiving hook, the fixed ring and the fixed receiving hook on the other side. When the pile body needs to be recovered, one end of the guide rope is connected to the lifting rope, and the other end of the guide rope is pulled until the guide lifting rope is sequentially passed through the fixed receiving hook, the fixed ring and the fixed receiving hook on one side, and the other side. The pile body is lifted up and recovered by fixing both ends of the lifting rope to the lifting equipment.

[0012] Preferably, the bottom plate is a steel plate.

[0013] Preferably, the guide rope is a nylon rope.

[0014] Preferably, the suspension rope is a steel strand.

[0015] Preferably, an outer side of the pile body is sleeved with an outer wire mesh, the outer wire mesh is elastically connected to the pile body, a wire wheel is rotatably connected to the bottom plate, the wire wheel is located on the inner side of the fixed ring, the side end of the wire wheel is connected to a side rotating wheel, the outer ring of the side rotating wheel is circumferentially provided with a plurality of convex teeth, a vibration rod is passed through the bottom plate, the top end of the vibration rod abuts against the convex teeth, the bottom end of the vibration rod is connected to the bottom end of the outer wire mesh through a connecting rope, when the suspension rope moves through the fixed ring, it drives the wire wheel to rotate, and the wire wheel drives the side rotating wheel to rotate synchronously, so that the vibration rod vibrates up and down along the convex teeth, driving the outer wire mesh to vibrate up and down.

[0016] Preferably, the lifting rope moves through between the top of the wire wheel and the inner top of the fixed ring, and the lifting rope includes a thin rope segment at the front section and a thick rope segment at the rear section. When the guide rope and the thin rope segment move through the fixed ring, they are not sufficient to drive the wire wheel to rotate. When the thick rope segment moves through the fixed ring, it drives the wire wheel to rotate.

[0017] A construction process for recyclable PRC supporting piles comprises the following steps:

[0018] The bottom end of the pile body is fixedly connected with a bottom plate. When the pile body is installed and used, the guide rope is sequentially passed along the fixed storage hook on one side, the fixed ring, and the fixed storage hook on the other side, and the two ends of the guide rope are respectively hung or fastened on the fixed storage hook;

[0019] When the pile body needs to be recovered, the guide rope is removed from the fixed receiving hook on one side, and one end of the guide rope is connected to one end of the lifting rope on the ground, and the other end of the guide rope is pulled until the guide lifting rope is passed through the fixed receiving hook on one side, the fixed ring, and the fixed receiving hook on the other side in sequence;

[0020] Then fix the two ends of the lifting rope to the lifting equipment on the ground, and slowly lift and recover the pile.

[0021] Preferably, before lifting, a reaction steel beam is installed on the ground, the reaction steel beam is installed above the top of the pile body, a jack is installed between the bottom end of the reaction steel beam and the ground, the two ends of the lifting rope are fixedly connected to the reaction steel beam, the reaction steel beam is lifted upward by the jack, and after the soil layer outside the pile body is loosened, the two ends of the lifting rope are fixedly connected to the lifting equipment on the ground, and the pile body is slowly lifted and recovered.

[0022] Preferably, a wire wheel is rotatably connected to the inner side of the fixing ring, and when the suspension rope moves through the fixing ring, the wire wheel is driven to rotate, and the outer wire mesh outside the pile body is transmitted to vibrate through the wire wheel.

[0023] The beneficial effects of the present invention are as follows: with respect to the existing recovery method of directly pulling out or lifting the pile body from the ground, on the one hand, the PRC pile is made of concrete and has a heavier deadweight than the steel sheet pile, so it is not easy to pull out. At the same time, the tensile strength of the concrete is limited, and it is easy to crack when it is pulled during the pulling out process. In the present invention, since the upward pulling force is transmitted to the steel plate at the bottom of the PRC pile through the steel strand, the PRC pile body is slowly lifted by squeezing and lifting the steel plate, so that the PRC pile is always in a compressed state, avoiding the problem of easy cracking of the concrete when it is pulled during the pulling out process. At the same time, considering the durability and reusability of the steel strand, a nylon rope with good anti-corrosion performance is reserved in the pile when not in use, and the steel strand is guided to replace the nylon rope to lift the pile when it is used, so as to realize the repeated use of the PRC concrete support pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of the pile body of the present invention during installation and use;

[0026] Figure 2 It is a schematic diagram of the top view of the pile body of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure when the lifting rope is pulled in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the present invention when the pile body is lifted;

[0029] Figure 5 It is a structural schematic diagram of a pile body in another embodiment of the present invention;

[0030] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point A in the middle;

[0031] Figure 7 It is a schematic diagram of the structure of the fixing ring and the wire wheel of the present invention;

[0032] Figure 8 It is a schematic structural diagram of the side turning wheel of the present invention;

[0033] Fig. 9 It is a schematic diagram of the top view of the pile body in another embodiment of the present invention.

[0034] In the figure: 100, lifting equipment; 1, pile body; 2, bottom plate; 3, fixing ring; 4, fixed storage hook; 5, guide rope; 6, lifting rope; 7, outer wire mesh; 8, wire wheel; 9, side rotating wheel; 91, convex teeth; 10, vibration rod; 11, connecting rope; 12, reaction steel beam; 13, jack; 14, guide wheel frame; 15, wire drum. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] A recyclable PRC support pile, such as Figures 1 to 4 As shown, it includes a pile body 1, the bottom end of the pile body 1 is fixedly connected to a bottom plate 2, a fixing ring 3 is provided on the top surface of the bottom plate 2, fixed receiving hooks 4 are provided on both sides of the top of the pile body 1, and a guide rope 5 is provided in the hollow interior of the pile body 1. The guide rope 5 is sequentially passed along the fixed receiving hook 4 on one side, the fixing ring 3, and the fixed receiving hook 4 on the other side. When the pile body 1 needs to be recovered, one end of the guide rope 5 is connected to the lifting rope 6, and the other end of the guide rope 5 is pulled until the guide lifting rope 6 is sequentially passed along the fixed receiving hook 4 on one side, the fixing ring 3, and the fixed receiving hook 4 on the other side, and the pile body 1 is lifted up and recovered by fixing both ends of the lifting rope 6 to the lifting device 100.

[0038] The present invention is based on the existing PRC supporting pile structure, including a pile body 1, which is in the shape of a hollow cylinder. In particular, the bottom end of the pile body 1 is fixedly connected to a bottom plate 2, a fixing ring 3 is provided on the top surface of the bottom plate 2, and fixed receiving hooks 4 are provided on both sides of the top of the pile body 1. A guide rope 5 is provided in the hollow interior of the pile body 1, and the guide rope 5 is sequentially passed through the fixed receiving hook 4 on one side, the fixing ring 3, and the fixed receiving hook 4 on the other side. Specifically, the bottom plate 2 is a steel plate and is permanently installed on the bottom end of the pile body 1. Specifically, when a precast concrete pile body 1 is used, a steel plate is fixedly connected to its bottom end, and the top of the steel plate can be inserted into the side wall of the pile body 1 through a steel bar to realize a precast connection. The guide rope 5 is a nylon rope, which has better corrosion resistance and does not need to play the role of hoisting the pile body 1. When the pile body 1 is installed and used, Figure 1 As shown, the two ends of the guide rope 5 are respectively hung or fastened on the fixed receiving hook 4 and stored in the pile body 1. When the pile body 1 needs to be recovered, Figure 3 As shown, one end of the guide rope 5 is connected to the suspension rope 6, and the other end of the guide rope 5 is pulled until the guide suspension rope 6 is sequentially passed along the fixed receiving hook 4 on one side, the fixed ring 3, and the fixed receiving hook 4 on the other side. Specifically, the suspension rope 6 is a steel strand, and the guide rope 5 is connected only when it is recovered, and is guided to pass into the pile body 1, so it will not be affected by corrosion and aging in long-term use. Figure 4 As shown, by fixing both ends of the lifting rope 6 to the lifting device 100, the pile body 1 is lifted upward for recovery. In view of the existing recovery method of directly pulling or lifting the pile body 1 from the ground, on the one hand, the PRC pile is made of concrete and has a larger deadweight than the steel sheet pile, so it is not easy to pull out. At the same time, the tensile strength of the concrete is limited, and it is easy to crack when being pulled out. In the present invention, Figure 4 As shown, since the upward pulling force is transmitted to the steel plate at the bottom of the PRC pile through the steel strand, the PRC pile body 1 is slowly lifted by squeezing and lifting the steel plate, so that the PRC pile is always in a compressed state, avoiding the problem of concrete being easily cracked due to tension during the pulling-out process. At the same time, considering the durability and reusability of the steel strand, a nylon rope with good corrosion resistance is reserved in the pile when not in use. When in use, the steel strand is guided to replace the nylon rope to lift the pile, thereby realizing the repeated use of the PRC concrete support pile.

[0039] For example, the PRC600 (110) AB pile type, which is often used in real support scenarios, has a compressive capacity that is nearly 4 times its tensile capacity. Taking a 15-meter pile length as an example, the standard value of the comprehensive soil layer lateral resistance is 50 kPa, considering the deadweight of the pile and the dynamic coefficient of 1.5 times during the recovery process, the tensile force required to recover the pile is close to 2200 kN, which has exceeded the control load of the first and second cracks of the pile type. In other words, if the tensile force applied to the top of the pile requires 2200 kN, cracks will be generated in the pile body. However, by transmitting the tensile force of 2200 kN to the pile bottom plate, the pile bottom plate is lifted upward to squeeze the PRC pile, and the pile body is always in a compressed state, which is far less than the compressive bearing capacity of the pile body. In addition, the strength of the steel strand is very high, with a standard value of the ultimate tensile strength of 1860 MPa. The diameter of the two steel strands corresponding to the tensile force of 2200 kN only needs to be about 40 mm, so the PRC concrete pile can be lifted and recovered relatively easily.

[0040] Among them, more preferably, the fixing ring 3 and the fixed storage hook 4 are made of the same steel material as the base plate 2, the fixing ring 3 and the base plate 2 are integrally prepared, the fixing ring 3 and the fixed storage hook 4 above it are arranged one by one, and the fixing ring 3 and the fixed storage hook 4 can be relatively arranged in four or more groups, which is conducive to stabilizing the lifting pile body 1.

[0041] As another embodiment of the present invention, Figures 5 to 9As shown, the outer side of the pile body 1 is sleeved with an outer wire mesh 7, and the outer wire mesh 7 is elastically connected to the pile body 1. Specifically, the outer wire mesh 7 can adopt the existing conventional steel wire mesh or non-corrosive nylon rope wire mesh and other structures. The top of the outer wire mesh 7 can be elastically connected to the top of the pile body 1 through elastic components such as elastic ropes, or connected to the adjacent side walls of the pile body 1 at each mesh of the outer wire mesh 7 through elastic components such as elastic rubber particles or short elastic ropes. A wire wheel 8 is rotatably connected to the bottom plate 2, and the wire wheel 8 is located on the inner side of the fixing ring 3. The side end of the wire wheel 8 is connected to a side rotating wheel 9, and a plurality of convex teeth 91 are circumferentially arranged on the outer ring of the side rotating wheel 9. A vibration rod 10 is passed through the bottom plate 2. Specifically, the top end of the vibration rod 10 abuts against the convex teeth 91, and the bottom end of the vibration rod 10 is connected to the bottom end of the outer wire mesh 7 through a connecting rope 11, and the vibration rod 10 and the bottom plate 2 can be connected. The lifting and pulling out of the pile body 1 will not be affected by the mesh wire diameter of the outer wire mesh 7, and the mesh wire diameter of the outer wire mesh 7 can be designed to be thinner, and the outer wire mesh 7 is attached and sleeved on the outside of the pile body 1, which will not affect the lifting and pulling out of the pile body 1 after the soil layer is initially loosened. At the same time, the mesh wire diameter of the outer wire mesh 7 is relatively thin, which is conducive to its easier up and down vibration along the outer soil layer of the pile body 1, and the vibration resistance is not large. While the lifting rope 6 is moving through the fixing ring 3, the outer wire mesh 7 is driven to vibrate up and down, which is conducive to the preliminary loosening of the soil layer outside the pile body 1 before lifting. More importantly, the viscosity of the soil layer covering the outer side of the pile body 1 is reduced, that is, the friction between the soil layer and the pile body 1 is reduced, thereby helping to lift the pile body 1 more smoothly.

[0042] Among them, Figures 5 to 9 As shown, the lifting rope 6 moves between the top of the wire wheel 8 and the inner top of the fixing ring 3, the wire wheel 8 and the coaxial side rotating wheel 9 at its side end are rotatably connected to the bottom plate 2, and there is a gap between the top of the wire wheel 8 and the inner top of the fixing ring 3. When the lifting rope 6 is tensioned and inserted, it just moves along the gap, driving the wire wheel 8 to rotate. In this way, the tension of the lifting rope 6 will be applied to the fixing ring 3, avoiding that the large tension of the lifting rope 6 is directly applied to the movably connected wire wheel 8, which exceeds the bearing range of the wire wheel 8. More preferably, the lifting rope 6 includes a thin rope segment at the front section and a thick rope segment at the rear section. When the guide rope 5 and the thin rope segment move through the fixing ring 3, they are not enough to drive the wire wheel 8 to rotate, avoiding that the guide rope 5 is damaged due to the rotation resistance of the wire wheel 8, and the thick rope segment drives the wire wheel 8 to rotate when it moves through the fixing ring 3.

[0043] The present invention also provides a construction process for recyclable PRC supporting piles, comprising the following steps:

[0044] The bottom end of the pile body 1 is fixedly connected with a bottom plate 2, which is a permanent steel plate. The pile body 1 is installed and used. Figure 1As shown, the guide rope 5 is sequentially passed through the fixed storage hook 4 on one side, the fixed ring 3, and the fixed storage hook 4 on the other side, and the two ends of the guide rope 5 are respectively hung or fastened on the fixed storage hook 4;

[0045] When the pile body 1 needs to be recovered, Figure 3 As shown, the guide rope 5 is removed from the fixed storage hook 4 on one side, and one end of the guide rope 5 is connected to one end of the suspension rope 6 on the ground, and the other end of the guide rope 5 is pulled until the guide suspension rope 6 is passed through the fixed storage hook 4 on one side, the fixed ring 3, and the fixed storage hook 4 on the other side in sequence;

[0046] Then the two ends of the lifting rope 6 are fixedly connected to the lifting equipment 100 on the ground, such as Figure 4 As shown, the pile body 1 is slowly lifted and recovered.

[0047] In an embodiment of the present invention, Figure 3 As shown, before lifting, a reaction steel beam 12 is first installed on the ground. The reaction steel beam 12 is installed above the top of the pile body 1. A jack 13 is installed between the bottom end of the reaction steel beam 12 and the ground. The two ends of the lifting rope 6 are fixedly connected to the reaction steel beam 12, and the reaction steel beam 12 is lifted upward by the jack 13. The huge reaction force of the jack 13 is used to loosen the pile first, reduce the viscosity of the soil layer covering the outside of the pile body 1, and reduce or dissipate part of the friction between the soil layer and the pile body 1. After the soil layer outside the pile body 1 is loosened, the two ends of the lifting rope 6 are fixedly connected to the lifting equipment 100 on the ground, which helps to lift the pile body 1 more smoothly.

[0048] Better, such as Figures 5 to 9 As shown, a wire wheel 8 is connected by rotating on the inner side of the fixed ring 3. When the lifting rope 6 moves through the fixed ring 3, the wire wheel 8 is driven to rotate, and the outer wire mesh 7 on the outer side of the pile body 1 is driven to vibrate through the wire wheel 8. Before the jack 13 loosens the pile body 1 with the reaction force, the lifting rope 6 moves through the fixed ring 3 while driving the outer wire mesh 7 to vibrate up and down, which is beneficial for initially loosening the soil layer on the outer side of the pile body 1 before lifting. More importantly, it is beneficial for further reducing the viscosity of the soil layer covering the outer side of the pile body 1, and further reducing the friction between the soil layer and the pile body 1, so that the jack 13 can loosen the pile body 1 more easily with the reaction force.

[0049] Among them, Figure 3 As shown, guide wheel frames 14 and wire drums 15 are provided on the ground at both sides outside the top of the pile body 1. The wire drum 15 can adopt an existing conventional electric wire take-up / release device for pulling the guide rope 5 and the suspension rope 6.

[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. A recyclable PRC supporting pile, comprising a pile body (1), characterized in that: The bottom end of the pile body (1) is fixedly connected to a bottom plate (2), and a fixing ring (3) is provided on the top surface of the bottom plate (2); Fixed receiving hooks (4) are provided on both sides of the top end of the pile body (1); A guide rope (5) is provided in the hollow interior of the pile body (1), and the guide rope (5) is sequentially passed through the fixed receiving hook (4) on one side, the fixed ring (3), and the fixed receiving hook (4) on the other side. When the pile body (1) needs to be recovered, one end of the guide rope (5) is connected to the lifting rope (6), and the other end of the guide rope (5) is pulled until the guide lifting rope (6) is sequentially passed through the fixed receiving hook (4) on one side, the fixed ring (3), and the fixed receiving hook (4) on the other side. By fixing both ends of the lifting rope (6) to the lifting device (100), the pile body (1) is lifted upward for recovery.

2. A recyclable PRC supporting pile according to claim 1, characterized in that: The bottom plate (2) is a steel plate.

3. The recyclable PRC supporting pile according to claim 1, characterized in that: The guide rope (5) is a nylon rope.

4. The recyclable PRC supporting pile according to claim 1, characterized in that: The suspension rope (6) is a steel strand.

5. The recyclable PRC supporting pile according to claim 1, characterized in that: The outer side of the pile body (1) is sleeved with an outer wire mesh (7), and the outer wire mesh (7) is elastically connected to the pile body (1). A wire wheel (8) is rotatably connected to the bottom plate (2), and the wire wheel (8) is located on the inner side of the fixed ring (3). The side end of the wire wheel (8) is connected to a side rotating wheel (9), and the outer ring of the side rotating wheel (9) is circumferentially arranged with a plurality of convex teeth (91). A vibration rod (10) is passed through the bottom plate (2), and the top end of the vibration rod (10) abuts against the convex teeth (91). The bottom end of the vibration rod (10) is connected to the bottom end of the outer wire mesh (7) through a connecting rope (11). When the suspension rope (6) moves through the fixed ring (3), it drives the wire wheel (8) to rotate, and the wire wheel (8) drives the side rotating wheel (9) to rotate synchronously, so that the vibration rod (10) vibrates up and down along the convex teeth (91), driving the outer wire mesh (7) to vibrate up and down.

6. The recyclable PRC supporting pile according to claim 5, characterized in that: The suspension rope (6) moves through the top of the wire wheel (8) and the inner top of the fixed ring (3), and the suspension rope (6) comprises a thin rope section at the front section and a thick rope section at the rear section. When the guide rope (5) and the thin rope section move through the inside of the fixed ring (3), they are insufficient to drive the wire wheel (8) to rotate. When the thick rope section moves through the inside of the fixed ring (3), it drives the wire wheel (8) to rotate.

7. A construction process using the recyclable PRC support piles according to any one of claims 1 to 6, characterized in that: The following steps are involved: The bottom end of the pile body (1) is fixedly connected to a bottom plate (2); when the pile body (1) is installed and used, a guide rope (5) is sequentially passed through the fixed receiving hook (4) on one side, the fixed ring (3), and the fixed receiving hook (4) on the other side, and both ends of the guide rope (5) are respectively hung or fastened on the fixed receiving hook (4); When the pile body (1) needs to be recovered, the guide rope (5) is removed from the fixed receiving hook (4) on one side, and one end of the guide rope (5) is connected to one end of the suspension rope (6) on the ground, and the other end of the guide rope (5) is pulled until the guide suspension rope (6) is passed through the fixed receiving hook (4) on one side, the fixed ring (3), and the fixed receiving hook (4) on the other side in sequence; Then, the two ends of the lifting rope (6) are fixedly connected to the lifting equipment (100) on the ground, and the pile body (1) is slowly lifted and recovered.

8. The construction process of a recyclable PRC supporting pile according to claim 7, characterized in that: Before lifting, a reaction steel beam (12) is installed on the ground. The reaction steel beam (12) is installed above the top of the pile body (1). A jack (13) is installed between the bottom of the reaction steel beam (12) and the ground. The two ends of the lifting rope (6) are fixedly connected to the reaction steel beam (12). The reaction steel beam (12) is lifted upward by the jack (13). After the soil layer outside the pile body (1) is loosened, the two ends of the lifting rope (6) are fixedly connected to the lifting equipment (100) on the ground, and the pile body (1) is slowly lifted and recovered.

9. The construction process of a recyclable PRC supporting pile according to claim 7, characterized in that: A wire wheel (8) is rotatably connected to the inner side of the fixing ring (3). When the suspension rope (6) moves through the fixing ring (3), the wire wheel (8) is driven to rotate, and the outer wire mesh (7) outside the pile body (1) is driven to vibrate through the wire wheel (8).

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