Construction method of prestressed pipe pile unhooking traction implantation

Abstract

The present application relates to the technical field of prestressed pipe pile, and discloses a prestressed pipe pile unhooking traction implantation construction method, which comprises the following steps: hoisting the prestressed pipe pile to the upper side of a pile hole by using a crane, and pouring a slurry into the pile hole; sleeving a hoisting structure around the outer periphery of the prestressed pipe pile, wherein the hoisting structure has an enclosing ring enclosing the outer periphery of the prestressed pipe pile; providing a bucket of an excavator, wherein the bucket has a bucket tooth and a hook; connecting the bucket tooth with the hoisting structure, disconnecting the crane from the prestressed pipe pile, and fixing the enclosing ring to the prestressed pipe pile in a tensioned state; moving the bucket with the prestressed pipe pile downwards to the pile hole, and disconnecting the bucket tooth from the hoisting structure after the lower part of the prestressed pipe pile is inserted into the pile hole, and then implanting the prestressed pipe pile. The prestressed pipe pile is implanted in the slurry-filled pipe pile by gravity, and then the pipe pile is embedded into the bearing layer by vibration and pressure, and the pile is formed after the slurry is solidified, so that the construction quality requirement is ensured, and the efficient, reliable and economical effect is achieved.

Description

Technical Field

[0001] This invention patent relates to the technical field of prestressed pipe piles, and more specifically, to a method for the detachment and traction implantation of prestressed pipe piles. Background Technology

[0002] Prestressed concrete pipe piles have advantages such as convenient construction, high efficiency in pile formation, and convenient on-site management, and are widely used in foundation engineering.

[0003] The construction techniques for prestressed concrete pipe piles include static pressure method and hammer driving method. In actual construction, to reduce the amount of pipe pile driven, construction is usually carried out within the foundation pit. When the project is located in a densely built-up area, the static pressure method is preferred due to the high noise level of hammer driving. However, when working at the bottom of the foundation pit, the construction of prestressed concrete pipe piles within approximately 4 meters of the pit edge is not possible due to the size limitations of the static pressure pipe pile machine.

[0004] In the existing technology, when constructing side piles within a range of about 4m from the edge of the foundation pit, the static pressure pipe pile machine cannot work normally because the side piles are too close to the support piles. Only the side pile tool can be used for pressing, but the pressure value of the side pile tool is too low, which makes it difficult to meet the design requirements and cannot achieve the design bearing capacity requirements.

[0005] To solve the above problems, a combination of soil piles and prestressed pipe piles is used to form piles. That is, the pile hole is formed by rotary drilling with a drill rod, and grout is injected into the pile hole during the lifting of the drill rod. Then, the prestressed pipe pile is inserted into the pile hole filled with grout by gravity. However, the problems of difficulty in inserting the prestressed pipe pile and inability to remove the lifting equipment on the pile body after insertion still exist. Summary of the Invention

[0006] The purpose of this invention is to provide a method for the detachment and traction implantation of prestressed pipe piles, which aims to solve the problem in the prior art that prestressed pipe piles are difficult to implant into the pile hole during the construction of side piles within a range of about 4m from the edge of the foundation pit.

[0007] This invention is implemented as follows: a prestressed pipe pile detachment and traction installation construction method, comprising the following construction methods:

[0008] 1) A crane is used to lift the prestressed pipe piles to the top of the pile hole, which is filled with grout;

[0009] 2) A hoisting structure is installed around the prestressed pipe pile, the hoisting structure having an enclosing ring around the prestressed pipe pile;

[0010] 3) Provide an excavator bucket, the front end of which has shovel teeth and the rear end of which has a hook; connect the shovel teeth to the lifting structure, disconnect the crane from the prestressed pipe pile, and the enclosing ring is in a tensioned state, pressing against the outer periphery of the prestressed pipe pile and being relatively fixed to the prestressed pipe pile;

[0011] 4) The bucket lifts the prestressed pipe pile and moves it downward into the pile hole. After the lower part of the prestressed pipe pile is inserted into the pile hole, the shovel teeth disengage from the lifting structure, the lifting structure is relaxed, and the lifting structure and the prestressed pipe pile are arranged movably. Under its own weight, the prestressed pipe pile sinks and is implanted into the pile hole.

[0012] Optionally, in construction step 1), the crane has a hook, which is located above the prestressed pipe pile, and lifts the prestressed pipe pile above the pile hole, and the prestressed pipe pile is vertical.

[0013] Optionally, in construction step 3), the bucket is located above the prestressed pipe pile, and after the shovel teeth are connected to the hoisting structure, the prestressed pipe pile is vertical.

[0014] Optionally, the hoisting structure includes a hoisting sling, one end of which is provided with a fixed end, the fixed end forming a through hole, and the other end of which is provided with a connecting end, the connecting end forming a connecting hole.

[0015] In construction step 2), the lifting sling is wrapped around the outer periphery of the prestressed pipe pile, and the other end of the lifting sling passes through the through hole. The lifting sling is wrapped around the outer periphery of the prestressed pipe pile to form the enclosing ring. The other end of the lifting sling has an extension section extending outside the enclosing ring.

[0016] In construction step 3), the shovel teeth are connected to the connecting hole, the enclosing ring is in a tensioned state, and the enclosing ring is fixed relative to the prestressed pipe pile;

[0017] In construction step 4), after the lower part of the prestressed pipe pile is inserted into the pile hole, the shovel teeth disengage from the connecting hole, the enclosing ring is relaxed, and the hoisting belt and the prestressed pipe pile are arranged movably.

[0018] Optionally, the lifting sling is equipped with a connecting belt. In construction step 3), when the bucket lifts the prestressed pipe pile, the shovel teeth are connected to the connecting hole, and the hook is connected to the connecting belt.

[0019] Optionally, in construction step 4), after the lower part of the prestressed pipe pile is inserted into the pile hole, the shovel teeth are disengaged from the connecting hole, and the hook, carrying the lifting strap, moves upward relative to the prestressed pipe pile until the lifting strap is detached from the prestressed pipe pile.

[0020] Optionally, in construction step 4), after the lower part of the prestressed pipe pile is inserted into the pile hole and the bottom of the prestressed pipe pile is inserted into the grout of the pile hole to a set depth, the shovel teeth are disengaged from the hoisting structure.

[0021] Optionally, the connecting belt is movably connected to the lifting belt and is connected in the middle of the enclosing ring; the outer extension is arranged opposite to the connecting belt and is respectively arranged on both sides of the prestressed pipe pile.

[0022] In construction step 3), after the shovel teeth are connected to the connecting hole and the hook is connected to the connecting belt, the connecting section and the extension section respectively pull the prestressed pipe pile on both sides of the prestressed pipe pile. The extension section tightens the enclosing ring so that the enclosing ring is relatively fixed to the prestressed pipe pile.

[0023] Optionally, in construction step 2), after the hoisting belt is fitted around the periphery of the prestressed pipe pile and forms an enclosing ring around the periphery of the prestressed pipe pile, an elastic belt is connected to the enclosing ring.

[0024] The two ends of the elastic band are respectively fixed to the two sides of the enclosing ring. The enclosing ring has a tension section located between the two ends of the elastic band. The connecting band connects the middle part of the tension section. The connecting band and the elastic band are located on the same side of the prestressed pipe pile.

[0025] In construction step 3), when the shovel teeth are connected to the connecting hole, the hook is connected to the connecting belt, and the bucket is suspending the prestressed pipe pile, the enclosing ring is in a taut state, and the two sides of the enclosing ring press against the outer periphery of the prestressed pipe pile and are relatively fixed to the prestressed pipe pile; the pulling section deviates outward from the outer periphery of the prestressed pipe pile and has a gap with the prestressed pipe pile; the elastic belt is stretched and presses against the outer periphery of the prestressed pipe pile and is relatively fixed to the prestressed pipe pile.

[0026] In construction step 4), after the shovel teeth disengage from the connecting hole, the enclosing ring becomes relaxed, and the two sides of the enclosing ring disengage from the outer periphery of the prestressed pipe pile and are movably arranged with the prestressed pipe pile. The elastic band retracts, disengages from the outer periphery of the prestressed pipe pile, and is movably arranged with the prestressed pipe pile.

[0027] Optionally, in construction step 2), multiple elastic bands are connected to both ends of the tension section. The elastic bands are arranged in a flat shape and are spaced apart along the axial direction of the prestressed pipe pile. The elastic coefficients of the multiple elastic bands are different.

[0028] In construction step 3), after the multiple elastic bands are stretched, the multiple elastic bands press against the outer periphery of the prestressed pipe pile, and the pressure of the multiple elastic bands pressing against the outer periphery of the prestressed pipe pile is different.

[0029] In construction step 4), when the multiple elastic bands retract, the multiple elastic units respectively disengage from the contact with the outer periphery of the prestressed pipe pile.

[0030] Compared with existing technologies ， The prestressed concrete pipe pile detachment and traction installation construction method provided by this invention effectively solves the problem of difficult construction of edge piles close to the edge of the foundation pit during prestressed concrete pipe pile construction. First, a pile hole filled with grout is formed at the construction location of the edge pile through drilling and grouting. Then, using the above construction method, a crane is used to lift the prestressed concrete pipe pile. The prestressed concrete pipe pile is then connected to the pile using a lifting belt, bucket, and connecting belt to form a connection structure. This connection mechanism fixes the bucket to the prestressed concrete pipe pile. The crane and lifting equipment are then removed to prevent the lifting equipment from entering the pile hole and being difficult to remove. The space between the prestressed concrete pipe pile and the hoisting equipment is then adjusted by moving the bucket. Once the set position is reached, the enclosing ring is loosened by moving the bucket. Under the action of gravity, the prestressed pipe pile is directly and vertically inserted into the pile hole. A connecting belt is provided on the hook teeth, which is used to connect with the hoisting belt. The hoisting belt is then retrieved. Subsequently, the prestressed pipe pile can be vibrated and pressed down by a vibratory hammer to embed it downward into the bearing layer, thus forming a stable composite pile, which is a composite pile formed by the solidification of grout and the prestressed pipe pile. This ensures the construction quality requirements and achieves efficient, reliable, and economical results. The pile planting efficiency is high, which solves the problems of difficult construction of edge piles close to the edge of the foundation pit and how to implant prestressed pipe piles. Attached Figure Description

[0031] Figure 1 This is a construction schematic diagram of using a crane to lift prestressed pipe piles, provided by the present invention.

[0032] Figure 2 This is a schematic diagram showing the connection of the bucket, lifting belt, connecting belt, and prestressed pipe pile provided by the present invention.

[0033] Figure 3 This is a three-dimensional schematic diagram of the bucket provided by the present invention;

[0034] Figure 4 This is a three-dimensional schematic diagram of the lifting sling provided by the present invention;

[0035] Figure 5 This is a front view schematic diagram of the prestressed pipe pile being implanted in the pile hole provided by the present invention;

[0036] Figure 6 This is a front view schematic diagram of the prestressed pipe pile after it is embedded in the bearing layer, as provided by the present invention;

[0037] Figure 7 This is a top view of the elastic belt, connecting belt, and lifting belt provided by the present invention;

[0038] Figure 8This is a partial schematic diagram of the lifting sling and connecting section provided by the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] Reference Figure 1-8 The image shows a preferred embodiment of the present invention.

[0043] The prestressed pipe pile unhooking and traction implantation construction method provided by the present invention includes the following construction methods:

[0044] 1) Use a crane to lift the prestressed pipe pile 100 to the top of the pile hole, and fill the pile hole with grout 10;

[0045] 2) A hoisting structure is installed around the prestressed pipe pile 100, and the hoisting structure has an enclosing ring around the prestressed pipe pile 100.

[0046] 3) Provide an excavator bucket 300, the front end of the bucket 300 has shovel teeth 310, and the rear end of the bucket 300 has a hook 320; connect the shovel teeth 310 to the lifting structure, disengage the crane from the prestressed pipe pile 100, the enclosing ring is in a tensioned state, presses against the outer periphery of the prestressed pipe pile 100, and is relatively fixed to the prestressed pipe pile 100;

[0047] 4) The bucket 300 lifts the prestressed pipe pile 100 and moves it downward into the pile hole. After the lower part of the prestressed pipe pile 100 is inserted into the pile hole, the shovel teeth 310 are disengaged from the lifting structure, the lifting structure is relaxed, and the lifting structure and the prestressed pipe pile 100 are arranged in a movable manner. Under its own weight, the prestressed pipe pile 100 sinks and is implanted into the pile hole.

[0048] The prestressed pipe pile detachment and traction installation construction method provided above effectively solves the problem of difficulty in constructing the side piles close to the edge of the foundation pit during the construction of the prestressed pipe pile 100. First, a pile hole filled with grout 10 is formed by drilling and grouting at the construction position of the side pile. Then, using the above construction method, the prestressed pipe pile 100 is lifted by a crane. The prestressed pipe pile 100 is then connected to a connecting structure by the lifting belt 200, the bucket 300, and the connecting belt 210. This connecting mechanism is used to... The bucket 300 is fixed to the prestressed pipe pile 100. Then the crane and lifting tool 601 are removed to prevent the lifting tool 601 from entering the pile hole and being difficult to remove. The spatial position of the prestressed pipe pile 100 is adjusted by moving the bucket 300. After the set requirements are met, the enclosing ring is loosened by moving the bucket 300. Under the action of gravity, the prestressed pipe pile 100 is directly and vertically inserted into the pile hole. A connecting belt 210 is provided on the hook tooth. The connecting belt 210 is used to connect with the lifting belt 200 and the lifting belt 200 is retrieved.

[0049] Subsequently, the prestressed pipe pile 100 can be vibrated and pressed by a vibratory hammer 400, so that it is embedded downward into the bearing layer 20, thus forming a stable composite pile, that is, a composite pile formed by the solidification of the grout 10 and the prestressed pipe pile 100. This ensures the construction quality requirements and achieves efficient, reliable and economical results. The pile planting efficiency is high, which effectively solves the problem of the difficulty in constructing edge piles that are close to the edge of the foundation pit.

[0050] Reference Figure 5 This is a front view of the prestressed concrete pipe pile 100 after it has been inserted into the pile hole. Subsequently, the prestressed concrete pipe pile 100 can be further embedded into the bearing layer 20 using a vibratory hammer 400 or a vibratory hammer 400 in conjunction with a pile driver 500. Figure 6 Once the grout 10 has solidified, the pile can be formed, effectively solving the problem of how to efficiently and effectively implant the prestressed pipe pile 100 into the pile hole during the construction of the edge pile position of the prestressed pipe pile 100.

[0051] In construction step 1), the crane has a hook 600, which is positioned above the prestressed concrete pipe pile 100. The hook 600 lifts the prestressed concrete pipe pile 100 above the pile hole, ensuring that the prestressed concrete pipe pile 100 is vertical. In this way, the prestressed concrete pipe pile 100 is lifted by the hook 600 and the lifting device 601 tied to the outside of the prestressed concrete pipe pile 100, while ensuring its verticality under the action of gravity.

[0052] In construction step 3), the bucket 300 is positioned above the prestressed concrete pipe pile 100. After the shovel teeth 310 are connected to the hoisting structure, the prestressed concrete pipe pile 100 is vertical. This ensures its verticality under the action of gravity.

[0053] The hoisting structure includes a hoisting sling 200, one end of which is provided with a fixed end, which forms a through hole 202, and the other end of which is provided with a connecting end, which forms a connecting hole 201.

[0054] In construction step 2), the hoisting sling 200 is wrapped around the outer periphery of the prestressed pipe pile 100, and the other end of the hoisting sling 200 passes through the through hole 202. The hoisting sling 200 is wrapped around the outer periphery of the prestressed pipe pile 100 to form an enclosing ring, and the other end of the hoisting sling 200 has an extension 220 extending outside the enclosing ring.

[0055] In construction step 3), the shovel tooth 310 is connected to the connecting hole 201, the enclosing ring is in a taut state, and the enclosing ring is fixed relative to the prestressed pipe pile 100;

[0056] In construction step 4), after the lower part of the prestressed pipe pile 100 is inserted into the pile hole, the shovel tooth 310 disengages from the connecting hole 201, the enclosing ring is relaxed, and the hoisting belt 200 and the prestressed pipe pile 100 are arranged in a movable manner.

[0057] In this way, by wrapping the hoisting belt 200 around the prestressed pipe pile 100 and passing one end through the through hole 202, an enclosing ring can be formed. After passing through the through hole 202, an extension section 220 is formed. The connecting hole 201 on the extension section 220 can be fitted onto the shovel tooth 310 to form a connecting structure. Under the pull of the shovel tooth 310, the enclosing ring is relatively fixed to the prestressed pipe pile 100, and the prestressed pipe pile 100 remains stable. By swinging the bucket 300, the shovel tooth 310 is disengaged from the connecting hole 201, and the prestressed pipe pile 100 is implanted into the pile hole under the action of gravity. The pile formation quality is good, the construction efficiency is high, and the problem of how to vertically implant the prestressed pipe pile 100 into the pile hole is effectively solved.

[0058] The lifting sling 200 is equipped with a connecting belt 210. In construction step 3), when the bucket 300 lifts the prestressed pipe pile 100, the sling teeth 310 connect with the connecting hole 201, and the hook 320 connects with the connecting belt 210. This forms a stable overall structure, increases the tension points, keeps the lifting sling 200 horizontal, and prevents the prestressed pipe pile 100 from shifting due to the lifting sling 200.

[0059] In construction step 4), after the lower part of the prestressed concrete pipe pile 100 is inserted into the pile hole, the shovel teeth 310 disengage from the connecting hole 201, and the hook 320 moves upward relative to the prestressed concrete pipe pile 100 with the lifting strap 200 until the lifting strap 200 detaches from the prestressed concrete pipe pile 100. In this way, after being inserted into the pile hole, the lifting strap 200 can be retrieved through the action of the connecting strap 210, preventing the lifting strap 200 from becoming difficult to remove once it enters the pile hole.

[0060] In a preferred embodiment, in construction step 4), after the lower part of the prestressed pipe pile 100 is inserted into the pile hole and the bottom of the prestressed pipe pile 100 is inserted into the grout 10 of the pile hole to a set depth, the shovel teeth 310 are disengaged from the hoisting structure. This ensures that the prestressed pipe pile 100 is inserted into the center of the pile hole and meets the set verticality requirement. Then, the enclosing ring is loosened, allowing the prestressed pipe pile 100 to be implanted.

[0061] In a preferred embodiment, the connecting belt 210 is movably connected to the lifting belt 200 and is connected in the middle of the enclosing ring; the outer extension 220 is arranged opposite to the connecting belt 210 and is respectively arranged on both sides of the prestressed pipe pile 100.

[0062] In construction step 3), after the shovel teeth 310 are connected to the connecting hole 201 and the hook 320 is connected to the connecting belt 210, the connecting section and the extension section 220 respectively pull the prestressed pipe pile 100 on both sides. The extension section 220 tightens the enclosing ring to fix the enclosing ring relative to the prestressed pipe pile 100. In this way, a stable overall structure is formed, which is pulled on both sides to prevent the prestressed pipe pile 100 from shifting due to the hoisting belt 200.

[0063] In construction step 2), after the hoisting belt 200 is placed around the periphery of the prestressed pipe pile 100 and forms an enclosing ring around the periphery of the prestressed pipe pile 100, the elastic belt 230 is connected to the enclosing ring.

[0064] The two ends of the elastic band 230 are fixed to the two sides of the enclosing ring respectively. The enclosing ring has a tension section located between the two ends of the elastic band 230. The connecting band 210 connects the middle of the tension section. The connecting band 210 and the elastic band 230 are located on the same side of the prestressed pipe pile 100.

[0065] In construction step 3), when the shovel teeth 310 are connected to the connecting hole 201, the hook 320 is connected to the connecting band 210, and the bucket 300 is suspending the prestressed pipe pile 100, the enclosing ring is in a taut state, and the two sides of the enclosing ring press against the outer periphery of the prestressed pipe pile 100 and are relatively fixed to the prestressed pipe pile 100; the tensioning section deviates outward from the outer periphery of the prestressed pipe pile 100 and has a gap with the prestressed pipe pile 100; the elastic band 230 is stretched and presses against the outer periphery of the prestressed pipe pile 100 and is relatively fixed to the prestressed pipe pile 100.

[0066] In construction step 4), after the shovel tooth 310 disengages from the connecting hole 201, the enclosing ring becomes relaxed. The two sides of the enclosing ring disengage from the outer periphery of the prestressed pipe pile 100 and are movably arranged with the prestressed pipe pile 100. The elastic band 230 retracts, disengages from the outer periphery of the prestressed pipe pile 100, and is movably arranged with the prestressed pipe pile 100.

[0067] In this way, the elastic band 230 has good toughness and elasticity. When the extension section 220 is stretched and connected to the connecting hole 201, the multiple elastic bands 230 are deformed under force. The elastic band 230 is larger than half a circle but smaller than a full circle. The deformation of the elastic band 230 generates a reaction force. The elastic band 230 presses against the prestressed pipe pile 100 and generates a force, increasing the clamping force. At the same time, when the connecting hole 201 is disengaged from the shovel tooth 310, the elastic force of the elastic band 230 drives the enclosing ring to open and relax outward, preventing the prestressed pipe pile 100 from falling with the hoisting belt 200.

[0068] In construction step 2), multiple elastic bands 230 are connected to both ends of the tension section. The elastic bands 230 are arranged in a flat shape. The multiple elastic bands 230 are arranged at intervals along the axial direction of the prestressed pipe pile 100. The elastic coefficients of the multiple elastic bands 230 are different.

[0069] In construction step 3), after the multiple elastic bands 230 are stretched, the multiple elastic bands 230 press against the outer periphery of the prestressed pipe pile 100 respectively, and the pressing force of the multiple elastic bands 230 against the outer periphery of the prestressed pipe pile 100 is different.

[0070] In construction step 4), when multiple elastic bands 230 retract, multiple elastic units separate from the contact with the outer periphery of the prestressed pipe pile 100.

[0071] Thus, when the extension section 220 is connected to the connecting hole 201 by tension, the multiple elastic bands 230 deform under force. Due to the different elastic coefficients, the elastic forces of the multiple elastic bands 230 are different. After being stretched, the multiple elastic bands 230 are in the shape of more than half a circle but less than a full circle. The multiple elastic bands 230 deform, thereby generating a reaction force. The multiple elastic bands 230 press against the prestressed pipe pile 100 to generate a force, increasing the clamping force. At the same time, when the connecting hole 201 is disengaged from the shovel tooth 310, under the action of the restoring elastic force of the multiple elastic bands 230, the enclosing ring is driven to open outward and relax, preventing the prestressed pipe pile 100 from falling with the hoisting belt 200.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prestressed pipe pile unhooking and pulling implantation construction method, characterized in that, The construction method comprises the following steps: 1) a crane is used to hoist a prestressed pipe pile to above a pile hole, wherein the pile hole is filled with a slurry; 2) a hoisting structure is sleeved on the outer periphery of the prestressed pipe pile, wherein the hoisting structure has an enclosing ring enclosing the outer periphery of the prestressed pipe pile; 3) a bucket of an excavator is provided, wherein the front end of the bucket is provided with a tooth, and the rear end of the bucket is provided with a hook; the tooth is connected with the hoisting structure, the crane is disconnected from the prestressed pipe pile, the enclosing ring is in a tensioned state, and is pressed against the outer periphery of the prestressed pipe pile and is fixed relative to the prestressed pipe pile; 4) the bucket hoisting the prestressed pipe pile moves towards the pile hole, and when the lower part of the prestressed pipe pile is inserted into the pile hole, the tooth is disconnected from the hoisting structure, the hoisting structure is in a relaxed state, and the hoisting structure is arranged movably relative to the prestressed pipe pile; the prestressed pipe pile is sunk and implanted into the pile hole under the action of its own gravity.

2. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 1, characterized in that, In the construction step 1), the crane is provided with a hook, and the hook is located above the prestressed pipe pile, the prestressed pipe pile is hoisted to above the pile hole, and the prestressed pipe pile is in a vertical state.

3. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 1, characterized in that, In the construction step 3), the bucket is located above the prestressed pipe pile, and the prestressed pipe pile is in a vertical state after the tooth is connected with the hoisting structure.

4. The prestressed pipe pile unhooking and pulling implantation construction method according to any one of claims 1 to 3, characterized in that, The hoisting structure comprises a hoisting belt, one end of the hoisting belt is provided with a fixed end, the fixed end is enclosed to form a through hole, the other end of the hoisting belt is provided with a connecting end, and the connecting end is enclosed to form a connecting hole; In the construction step 2), the hoisting belt is wound around the outer periphery of the prestressed pipe pile, the other end of the hoisting belt passes through the through hole, the hoisting belt is enclosed to form the enclosing ring around the outer periphery of the prestressed pipe pile, and the other end of the hoisting belt has an extension segment extending outside the enclosing ring; In the construction step 3), the tooth is connected with the connecting hole, the enclosing ring is in a tensioned state, and the enclosing ring is fixed relative to the prestressed pipe pile; In the construction step 4), when the lower part of the prestressed pipe pile is inserted into the pile hole, the tooth is disconnected from the connecting hole, the enclosing ring is in a relaxed state, and the hoisting belt is arranged movably relative to the prestressed pipe pile.

5. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 4, characterized in that, The hoisting belt is provided with a connecting belt, and in the construction step 3), when the bucket hoists the prestressed pipe pile, the tooth is connected with the connecting hole, and the hook is connected with the connecting belt.

6. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 5, characterized in that, In the construction step 4), when the lower part of the prestressed pipe pile is inserted into the pile hole, the tooth is disconnected from the connecting hole, the hook moves upwards with the hoisting belt relative to the prestressed pipe pile until the hoisting belt is disconnected from the prestressed pipe pile.

7. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 5, characterized in that, In the construction step 4), when the lower part of the prestressed pipe pile is inserted into the pile hole, and the bottom of the prestressed pipe pile is inserted into the slurry in the pile hole to a specified depth, the tooth is disconnected from the hoisting structure.

8. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 5, characterized in that, The connecting belt is movably connected with the hoisting belt and is connected to the middle part of the enclosing ring; the extension segment and the connecting belt are arranged opposite to each other and are arranged on the two sides of the prestressed pipe pile, respectively. In the construction step 3), when the connecting hole is connected with the connecting belt, the connecting belt and the extension section respectively pull the prestressed pipe pile on both sides of the prestressed pipe pile, and the extension section tightens the enclosing ring to relatively fix the enclosing ring and the prestressed pipe pile.

9. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 5, characterized in that, In the construction step 2), when the hoisting belt is sleeved on the outer periphery of the prestressed pipe pile and the enclosing ring is formed to surround the outer periphery of the prestressed pipe pile, the elastic belt is connected on the enclosing ring; Both ends of the elastic belt are respectively fixed with both sides of the enclosing ring, the enclosing ring has a pulling section between both ends of the elastic belt, the connecting belt is connected with the middle part of the pulling section, and the connecting belt and the elastic belt are located on the same side of the prestressed pipe pile; In the construction step 3), when the connecting hole is connected with the connecting belt, the hook is connected with the connecting belt, and the excavator bucket hoists the prestressed pipe pile, the enclosing ring is in a tight state, both sides of the enclosing ring are pressed against the outer periphery of the prestressed pipe pile and are relatively fixed with the prestressed pipe pile, the pulling section deviates outward from the outer periphery of the prestressed pipe pile and has a gap between the prestressed pipe pile, the elastic belt is stretched and is pressed against the outer periphery of the prestressed pipe pile and is relatively fixed with the prestressed pipe pile; In the construction step 4), when the connecting hole is disconnected with the connecting belt, the enclosing ring is in a relaxed state, both sides of the enclosing ring are disconnected with the outer periphery of the prestressed pipe pile and are movably arranged with the prestressed pipe pile, and the elastic belt is retracted and is disconnected with the outer periphery of the prestressed pipe pile and is movably arranged with the prestressed pipe pile.

10. The prestressed pipe pile unhooking and pulling implantation construction method according to claim 9, characterized in that, In the construction step 2), both ends of the pulling section are respectively connected with a plurality of elastic belts, the elastic belts are arranged in a flat state, the plurality of elastic belts are arranged in an interval along the axial direction of the prestressed pipe pile, and the elastic coefficients of the plurality of elastic belts are different; In the construction step 3), when the plurality of elastic belts are stretched, the plurality of elastic belts are respectively pressed against the outer periphery of the prestressed pipe pile, and the pressing forces of the plurality of elastic belts pressed against the outer periphery of the prestressed pipe pile are different; In the construction step 4), when the plurality of elastic belts are retracted, the plurality of elastic belts are respectively disconnected with the outer periphery of the prestressed pipe pile.

Images