A pile implantation drainage belt construction device and a construction method

Abstract

The present application relates to pile foundation construction technical field, specifically, it relates to a kind of implantation pile drainage belt construction device and construction method, including drainage belt for soft soil foundation drainage, still include with the drainage belt connection drainage belt insert shoe and for driving drainage belt insert shoe implantation drive mechanism;Drainage belt insert shoe one side is connected with drainage belt, the other side of drainage belt insert shoe is movably connected with the outside wall of prefabricated pipe pile, drive mechanism drives drainage belt insert shoe to move downwards along the outside wall of prefabricated pipe pile, to form vertical drainage passage;Drive mechanism drives drainage belt insert shoe to move, and drainage belt is always between cement soil and ground soil;Drive mechanism can be recycled to lift down pressure pipe jacking, realize the repeated use of material;Based on the vertical drainage belt of the device, the influence of cement soil hardening on pile side soft soil pumping drainage can be reduced, and the efficiency of pumping drainage of cement soil and adjacent soft soil is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pile foundation construction technology, in particular to a driven pile drainage belt construction device and a construction method. BACKGROUND

[0002] Coastal soft soil has the characteristics of high water content, large compressibility and low strength, so the side friction provided by the coastal soft soil to the pile foundation is small, which makes the pile in the coastal area usually need to be set very deep to ensure its reliable bearing capacity. The stiffness and strength of the coastal soft soil can be improved after foundation treatment, so the bearing capacity of the pile foundation can be improved. If the soft soil foundation is treated after the pile foundation engineering construction, the construction period is longer and the cost is higher. If the soft soil foundation is treated during the pile foundation engineering construction to improve the strength of the pile side soil, it is of great significance to improve the bearing capacity of the pile foundation, reduce the construction period and cost.

[0003] The commonly used soft soil foundation treatment methods at present include vacuum preloading method, surcharge preloading method and cement soil mixing pile method. Among them, the vacuum preloading method does not need to be loaded, which saves the loading and unloading process and a large amount of loading materials; at the same time, the equipment and construction technology used are relatively simple, without the need for a large number of heavy machinery, which is convenient for large area construction. During the construction process of the vacuum preloading method, a relatively important link is to insert the strip-shaped plastic drainage belt into the soft soil foundation with a belt inserting machine to form a drainage channel, and then use a vacuum pump to pump air to drain part of the pore water in the soft soil, so as to improve the strength of the soft soil and increase the bearing capacity of the soft soil foundation.

[0004] The driven pile is a technology that has been promoted in the field of pile foundation engineering in China in recent years. During the construction process of the driven pile, a cement slurry is first sprayed to form a cement soil pile hole in the foundation, and then a high-strength prefabricated pile is planted to form a composite pile combined with the prefabricated pile and the cement soil. The composite pile has the characteristics of deep construction depth, wide applicable soil layer, small disturbance and green environmental protection. However, it still has some defects, that is, in the coastal deep soft soil area, due to the excessive water mixed into the cement soil during construction, the hardening speed of the cement soil is slow, and the strength improvement needs 3-4 months, which has a certain influence on the total construction period of the project; at the same time, the side friction provided by the soft soil layer around the pile in the deep soft soil area is small, and there is a problem of negative friction resistance, which affects the bearing capacity and anti-deformation capacity of the pile foundation.

[0005] To solve the above problems, Chinese patent CN113914314A discloses a construction method of static drill root planting drainage pile, which fixes drainage plates around the prefabricated pipe pile while sinking the pile, brings the prefabricated pipe pile and the drainage plates into the foundation together, completes the layout of the vertical drainage channel around the pile, and realizes the drainage of cement soil and soft soil on the side of the pile. The deficiency is that since the drainage belt is in the cement soil, the rapid hardening of the cement soil will affect the drainage of the adjacent soil layer by the drainage belt, thereby affecting the implementation effect of the static drill root planting drainage pile.

[0006] According to the static drill root planting pile technical regulation, the pile foundation bearing capacity is mainly determined by the strength of the soil layer on the side of the pile. Therefore, from the perspective of improving the bearing capacity of the pile foundation, the object of vacuum preloading drainage should be the soft soil on the side of the pile. If the drainage belt is set between the cement soil and the adjacent soil layer, the soft soil on the side of the pile will be directly drained, which will significantly improve the implementation effect of the drainage pile. SUMMARY

[0007] The present application provides a pile drainage belt construction device and construction method to solve the problem that the existing technology places the drainage belt in the cement soil, the rapid hardening of the cement soil affects the drainage of the adjacent soil layer by the drainage belt, and thus affects the reinforcement effect of the prefabricated pipe pile.

[0008] A pile drainage belt construction device includes a drainage belt for drainage, a drainage belt boot connected to the drainage belt, and a driving mechanism for driving the drainage belt boot to move. One side of the drainage belt boot is connected to the drainage belt, and the other side of the drainage boot is movably connected to the outer side wall of the prefabricated pipe pile. The driving mechanism drives the drainage belt boot to move downward along the outer side wall of the prefabricated pipe pile to form a drainage channel. When the driving mechanism drives the drainage belt boot to move, the drainage belt is always in contact with the inner side wall of the drainage channel.

[0009] The advantages and benefits of the present application are that the driving mechanism drives the drainage belt boot to move, so that the drainage belt boot drives the drainage belt to move. During the movement of the drainage belt, the drainage belt is always in contact with the inner side wall of the drainage channel, so that the influence of the hardening of the cement soil on the drainage of the drainage belt is reduced, and the efficiency of the drainage of the cement soil and the adjacent soft soil is improved.

[0010] Preferably, the drainage belt inserting shoe comprises a connecting plate and a moving structure, the connecting plate is vertically arranged, one side of the connecting plate away from the prefabricated pipe pile is connected with the drainage belt, the other side of the connecting plate close to the prefabricated pipe pile is connected with one side of the moving structure, and the other side of the moving structure is movably connected with the prefabricated pipe pile when the driving mechanism drives the drainage belt inserting shoe to move downwards along the outer sidewall of the prefabricated pipe pile. In this way, the drainage belt can be closely attached to the inner sidewall of the drainage channel due to the connecting plate, and the moving structure can prevent the drainage belt inserting shoe from damaging the outer sidewall of the prefabricated pipe pile during the downward movement.

[0011] Preferably, the moving structure comprises a connecting rod and a pulley, the connecting rod is horizontally arranged, one end of the connecting rod is connected with the connecting plate, and the other end of the connecting rod is rotatably connected with the pulley, and the pulley is movably connected with the prefabricated pipe pile when the driving mechanism drives the drainage belt inserting shoe to move downwards along the outer sidewall of the prefabricated pipe pile. In this way, the rolling connection between the pulley and the outer sidewall of the prefabricated pipe pile can minimize the impact of the moving drainage belt inserting shoe on the outer sidewall of the prefabricated pipe pile.

[0012] Preferably, the lower end of the connecting plate is provided with a digging structure, and the digging end of the digging structure is arranged downward. In this way, the digging mechanism can reduce the resistance during the sinking of the drainage belt inserting shoe and the drainage belt.

[0013] Preferably, the digging structure comprises a first inclined rod and a second inclined rod, one end of each of the first inclined rod and the second inclined rod is connected with the lower end of the connecting plate on both sides, and the other end of each of the first inclined rod and the second inclined rod is connected with each other to form a triangular structure. In this way, the triangular digging structure can maximize the reduction of the resistance during the sinking of the drainage belt inserting shoe and the drainage belt.

[0014] Preferably, the driving mechanism comprises a transfer machine, an ejector rod machine, and a plurality of ejector rods that can be connected with each other, the transfer machine is used to carry the ejector rod machine, the ejector rod machine drives the plurality of ejector rods connected with each other to move downwards, the lower end of the last ejector rod abuts against the drainage belt inserting shoe and drives the drainage belt inserting shoe to move downwards. In this way, the cooperation of the transfer machine, the ejector rod machine, and the ejector rods can drive the movement of the drainage belt inserting shoe, which reduces the size of large machinery, is convenient and fast to install, greatly improves the construction speed, and saves the construction cost.

[0015] Preferably, one end of the ejector rod is provided with a threaded hole, the other end of the ejector rod is provided with a stud threadedly connected with the threaded hole, and the plurality of ejector rods are connected with each other through the threaded connection of the stud and the threaded hole. In this way, the threaded connection has the advantages of firm connection and convenient disassembly.

[0016] A construction method, comprising the following steps:

[0017] Step S1, connecting the drainage belt with one side of the drainage belt shoe;

[0018] Step S2, lowering the drainage belt shoe into the cement soil and ensuring that the other side of the drainage belt shoe is movably connected with the outer side wall of the precast pipe pile;

[0019] Step S3, driving the drainage belt shoe to move downward by the driving mechanism while ensuring that the drainage belt is in sufficient contact with the inner side wall of the drainage channel;

[0020] Step S4, cutting the drainage belt when the drainage belt shoe with the drainage belt sinks to the predetermined installation depth.

[0021] Preferably, the driving mechanism comprises a transfer machine, an ejector rod machine and a plurality of ejector rods that can be spliced with each other, and the step S3 comprises:

[0022] Step S31, moving the transfer machine to the precast pipe pile and erecting the ejector rod machine, and then installing the first ejector rod at the driving end of the ejector rod machine;

[0023] Step S32, driving the ejector rod to move downward by the driving mechanism and splicing the next ejector rod at the upper end of the ejector rod until the lower end of the first ejector rod abuts against the drainage belt shoe;

[0024] Step S33, driving the ejector rod to move downward by the ejector rod machine and splicing the remaining other ejector rods upward while ensuring that the drainage belt is in sufficient contact with the inner side wall of the drainage channel. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A construction schematic diagram of the pile drainage belt construction device of the present application;

[0026] Figure 2 A structural schematic diagram of the drainage belt shoe of the present application;

[0027] Figure 3 A first section ejector rod installation schematic diagram of the drainage belt shoe of the present application;

[0028] Figure 4 A flowchart of the construction method of the present application;

[0029] Figure 5 A detailed flowchart of step S3 of the present application.

[0030] Wherein, 1, drainage belt; 2, drainage belt shoe; 3, driving mechanism; 4, prefabricated pipe pile; 5, drainage channel; 6, tunneling structure; 2.1, connecting plate; 2.2, moving structure; 3.1, transfer machine; 3.2, ejector rod machine; 3.3, ejector rod; 6.1, first inclined rod; 6.2, second inclined rod; 2.21, connecting rod; 2.22, pulley. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0032] The present application provides a kind of implant pile drainage belt construction device and construction method, to solve the problem that cement soil hardening will affect the drainage belt 1 to the adjacent soil layer of drainage belt 1, in turn affect the reinforcement effect of prefabricated pipe pile 4 due to drainage belt 1 in cement soil in prior art.

[0033] A kind of implant pile drainage belt construction device, including drainage belt 1 for drainage, also include drainage belt shoe 2 connected with drainage belt 1 and driving mechanism 3 for driving drainage belt shoe 2 moves, one side of drainage belt shoe 2 is connected with drainage belt 1, the other side of drainage belt shoe 2 is movably connected with the outside wall of prefabricated pipe pile 4, driving mechanism 3 drives drainage belt shoe 2 to move downwards along the outside wall of prefabricated pipe pile 4, to form drainage channel 5, when driving mechanism 3 drives drainage belt shoe 2 to move, drainage belt 1 is always abutted on the inside wall of drainage channel 5.

[0034] Wherein, soft soil foundation drainage drainage belt 1, also include drainage belt shoe 2 connected with drainage belt 1 and driving mechanism 3 for driving drainage belt shoe 2 implantation;One side of drainage belt shoe 2 is connected with drainage belt 1, the other side of drainage belt shoe 2 is movably connected with the outside wall of prefabricated pipe pile 4, driving mechanism 3 drives drainage belt shoe 2 to move downwards along the outside wall of prefabricated pipe pile 4, to form vertical drainage channel 5;When driving mechanism 3 drives drainage belt shoe 2 to move, drainage belt 1 is always between cement soil and foundation soil;Based on the vertical drainage belt 1 of the device, the influence of cement soil hardening on the drainage of soft soil on the side of pile can be reduced, and the efficiency of drainage of cement soil and adjacent soft soil can be improved.

[0035] In the preferred embodiment of the present application, the drainage belt shoe 2 includes a connecting plate 2.1 and a moving structure 2.2, the connecting plate 2.1 is vertically arranged, one side of the connecting plate 2.1 away from the prefabricated pipe pile 4 is connected with the drainage belt 1, and the other side of the connecting plate 2.1 close to the prefabricated pipe pile 4 is connected with one side of the moving structure 2.2, when the driving mechanism 3 drives the drainage belt shoe 2 to move downwards along the outside wall of the prefabricated pipe pile 4, the other side of the moving structure is movably connected with the prefabricated pipe pile 4.

[0036] Specifically, due to the connecting plate 2.1, the drainage belt 1 can be closely attached to the inner side wall of the water inlet channel, and due to the moving structure 2.2, the outer side wall of the precast pipe pile 4 is prevented from being damaged in the process of the downward movement of the drainage belt shoe 2.

[0037] To further optimize the above scheme, the moving structure 2.2 comprises a connecting rod 2.21 and a pulley 2.22, the connecting rod 2.21 is horizontally arranged, one end of the connecting rod 2.21 is connected with the connecting plate 2.1, and the other end is rotationally connected with the pulley 2.22, and the pulley 2.22 is movably connected with the precast pipe pile 4 when the driving mechanism 3 drives the drainage belt shoe 2 to move downward along the outer side wall of the precast pipe pile 4.

[0038] Specifically, the rolling connection of the pulley 2.22 and the outer side wall of the precast pipe pile 4 can minimize the influence of the drainage belt shoe 2 on the outer side wall of the precast pipe pile 4 during the movement.

[0039] To further optimize the above scheme, the lower end of the connecting plate 2.1 is provided with a tunneling structure 6, and the tunneling end of the tunneling structure 6 is arranged downward.

[0040] Specifically, due to the tunneling mechanism, the resistance during the sinking of the drainage belt shoe 2 and the drainage belt 1 can be reduced.

[0041] To further optimize the above scheme, the tunneling structure 6 comprises a first inclined rod 6.1 and a second inclined rod 6.2, one end of the first inclined rod 6.1 and the second inclined rod 6.2 is respectively connected with the lower end of the connecting plate 2.1 on both sides, and the other end of the first inclined rod 6.1 and the second inclined rod 6.2 is connected with each other to form a triangular structure.

[0042] Specifically, the triangular structure of the tunneling structure 6 can maximize the reduction of the resistance during the sinking of the drainage belt shoe 2 and the drainage belt 1.

[0043] In the preferred embodiment of the present application, the driving mechanism 3 comprises a transfer machine 3.1, a ejector rod machine 3.2 and a plurality of spliced ejector rods 3.3, the transfer machine 3.1 is used to carry the ejector rod machine 3.2, the ejector rod machine 3.2 drives the spliced ejector rods 3.3 to move downward, and the lower end of the ejector rod 3.3 at the tail end abuts against the drainage belt shoe 2 and drives the drainage belt shoe 2 to move downward.

[0044] Specifically, the movement of the drainage belt shoe 2 is driven by the cooperation of the transfer machine 3.1, the ejector rod machine 3.2 and the ejector rod 3.3, which reduces the size of the large machinery, is convenient and fast to install, greatly improves the construction speed and saves the construction cost.

[0045] To further optimize the above scheme, one end of the ejector rod 3.3 is provided with a threaded hole, and the other end is provided with a stud threadedly connected with the threaded hole, and each ejector rod 3.3 is spliced together through the threaded connection of the stud and the threaded hole.

[0046] Specifically, the threaded connection has the advantages of firm connection and convenient disassembly.

[0047] A construction method, comprising the following steps:

[0048] Step S1, connecting the drainage belt 1 with one side of the drainage belt shoe 2;

[0049] Step S2, lowering the drainage belt shoe 2 into the cement soil and ensuring that the other side of the drainage belt shoe 2 is movably connected with the outer side wall of the prefabricated pipe pile 4;

[0050] Step S3, driving the drainage belt shoe 2 to move downward by the driving mechanism 3, while ensuring that the drainage belt 1 is in sufficient contact with the inner side wall of the drainage passage;

[0051] Step S4, cutting the drainage belt 1 when the drainage belt shoe 2 with the drainage belt 1 sinks to the predetermined installation depth.

[0052] Specifically, in step S4, after cutting the drainage belt 1, the driving mechanism 3 also needs to be recovered.

[0053] In a preferred embodiment of the method of the application, the driving mechanism 3 comprises a transfer machine 3.1, an ejector rod machine 3.2, and a plurality of splicable ejector rods 3.3, and step S3 comprises:

[0054] Step S31, moving the transfer machine 3.1 to the prefabricated pipe pile 4 and erecting the ejector rod machine 3.2, and after completion, installing the first ejector rod 3.3 at the driving end of the ejector rod machine 3.2;

[0055] Step S32, driving the ejector rod 3.3 to move downward by the driving mechanism 3, and splicing the next ejector rod 3.3 at the upper end of the ejector rod 3.3, until the lower end of the first ejector rod 3.3 abuts against the drainage belt shoe 2;

[0056] Step S33, driving the ejector rod 3.3 to move downward by the ejector rod machine 3.2, and splicing the remaining other ejector rods 3.3 upward, while ensuring that the drainage belt 1 is in sufficient contact with the inner side wall of the drainage passage.

[0057] The optimal implementation is as follows, wherein the connecting plate 2.1 is composed of two triangular metal plates, the triangular structure of the excavating structure 6 can reduce the resistance during the sinking of the drainage belt 1, two groups of threaded fixing holes are formed on the surface of the connecting plate 2.1, the bottom of the drainage belt 1 is clamped between the two steel plates, and the screws penetrate the drainage belt 1 to fix the steel plates and the drainage belt 1; the connecting rod 2.21 is located between the connecting plate 2.1 and the pulley 2.22, and is welded together by two upper and lower horizontal rods and a vertical rod in the middle, the length of the horizontal rod is the thickness of the cement soil minus the outer diameter of the pulley 2.22, and a protruding structure is arranged in the middle of the upper horizontal rod; the pulley 2.22 is composed of two wheels and is fixed by the upper and lower horizontal rods of the connecting rod 2.21, and can slide along the outer side wall of the prefabricated pipe pile 4 under the action of the jacking force. The top rod 3.3 is a high-strength aluminum alloy threaded hollow pipe with a groove on the inner wall, which can be spliced or disassembled through threads, wherein the groove at the lower end (i.e. the end) of the first top rod 3.3 can be clamped together with the protruding structure in the middle of the upper connecting rod 2.21.

[0058] During construction, the drainage belt 1 is first installed with the connecting plate 2.1, then the groove at the lower part of the first top rod 3.3 is aligned with the protruding structure in the middle of the upper horizontal rod of the connecting rod 2.21 through the top rod machine 3.2, and then the drainage belt boot 2 is lowered into the cement soil, ensuring that the pulley 2.22 is in contact with the outer side wall of the prefabricated pipe pile 4, and the drainage belt 1 is in contact with the interface between the cement soil and the surrounding soil. The length of the top rod 3.3 is extended by splicing the threads on the upper part of the top rod 3.3, and at the same time, under the action of the jacking force applied by the top rod machine 3.2, the drainage belt boot 2 with the drainage belt 1 sinks to the predetermined installation depth, the drainage belt 1 is cut off, the drainage belt boot 2 remains in the cement soil and is not recycled, and finally the top rod 3.3 is recycled in the order from bottom to top, and the step is repeated until the construction of the remaining drainage belt 1 is completed.

[0059] The drainage belt 1 is fixed by a specific connecting structure, the drainage belt 1 is installed and constructed by splicing the top rods 3.3, the drainage belt 1 can be installed to the interface between the cement soil and the surrounding soil, the influence of the hardening of the cement soil on the drainage of the drainage belt 1 is reduced, and the efficiency of the drainage of the cement soil and the adjacent soft soil is improved. At the same time, the size of the large machine is reduced, the installation is convenient and fast, the construction speed is greatly improved, and the construction cost is saved, and the specific advantages are as follows:

[0060] 1. The drainage belt boot 2 is combined by the connecting plate 2.1, the connecting rod 2.21 and the pulley 2.22 into a drainage belt 1 construction device with adjustable spacing, which is easy to install and operate, low in cost, does not need to worry about recycling, and can adjust the length of the connecting rod 2.21 according to the thickness of the cement soil, so that the drainage belt 1 can be installed to the interface between the cement soil and the surrounding soil, and the drainage rate of the drainage belt 1 is improved;

[0061] 2. The top rod 3.3 is connected by thread to sleeve rod and spliced, with light weight and high strength, easy to sink installation and disassembly advantages;

[0062] 3. The construction process only needs light mechanical downward thrust, without large machinery access, can greatly improve the construction progress, improve the construction conditions, save construction cost.

[0063] The terms "first", "second", "third", "fourth" and the like in the description and claims of the present application and above figures (if any) are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of these terms, if any, does not connote any order or sequence, and the terms ares used to distinguish one object from another object. It is also to be understood that the data used by the embodiments of the present application, if any, can be ordered in any way and the embodiments of the present application can be implemented by any data order without necessarily being limited to the order of data illustrated or claimed herein. Further, the terms "comprise" and "have" and any variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, system, product, or apparatus that comprises a list of steps or units not only comprises the steps or units of the list but can also comprise other steps or units not expressly listed or inherent to such process, method, system, product, or apparatus.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A construction device for a drainage belt for implanted piles, comprising a drainage belt (1) for drainage, characterized in that, It also includes a drainage belt insert (2) connected to the drainage belt (1) and a drive mechanism (3) for driving the drainage belt insert (2) to move. One side of the drainage belt insert (2) is connected to the drainage belt (1), and the other side of the drainage belt insert (2) is movably connected to the outer wall of the precast pipe pile (4). The drive mechanism (3) drives the drainage belt insert (2) to move downward along the outer wall of the precast pipe pile (4) to form a drainage channel (5). When the drive mechanism (3) drives the drainage belt insert (2) to move, the drainage belt (1) always abuts against the inner wall of the drainage channel (5). The drainage belt insert (2) includes a connecting plate (2.1) and a moving structure (2.2). The connecting plate (2.1) is vertically arranged. The side of the connecting plate (2.1) away from the precast pipe pile (4) is connected to the drainage belt (1). The side of the connecting plate (2.1) close to the precast pipe pile (4) is connected to one side of the moving structure (2.2). When the driving mechanism (3) drives the drainage belt insert (2) to move downward along the outer wall of the precast pipe pile (4), the other side of the moving structure (2.2) is movably connected to the precast pipe pile (4). The drainage belt insert (2) is a construction device for drainage belt (1) with adjustable spacing, which is composed of a connecting plate (2.1), a connecting rod (2.21) and a pulley (2.22); The movable structure (2.2) includes a connecting rod (2.21) and a pulley (2.22). The connecting rod (2.21) is horizontally arranged. One end of the connecting rod (2.21) is connected to the connecting plate (2.1), and the other end is rotatably connected to the pulley (2.22). When the driving mechanism (3) drives the drainage belt insert (2) to move downward along the outer side wall of the precast pipe pile (4), the pulley (2.22) is movably connected to the precast pipe pile (4).

2. The construction device for implanted pile drainage belt according to claim 1, characterized in that, The lower end of the connecting plate (2.1) is provided with a tunneling structure (6), and the tunneling end of the tunneling structure (6) is set downward.

3. The construction device for implanted pile drainage belt according to claim 2, characterized in that, The tunneling structure (6) includes a first inclined rod (6.1) and a second inclined rod (6.2). One end of the first inclined rod (6.1) and the second inclined rod (6.2) are respectively connected to the lower ends of the connecting plate (2.1). The other ends of the first inclined rod (6.1) and the second inclined rod (6.2) are connected to each other to form a triangular structure.

4. The construction device for implanted pile drainage belt according to claim 1, characterized in that, The drive mechanism (3) includes a transfer machine (3.1), a push rod machine (3.2), and a number of push rods (3.3) spliced ​​together. The transfer machine (3.1) is used to support the push rod machine (3.2). When the push rod machine (3.2) drives each of the spliced ​​push rods (3.3) to move downward, the lower end of the push rod (3.3) at the end abuts against the drainage belt insert (2) and drives the drainage belt insert (2) to move downward.

5. The construction device for implanted pile drainage belt according to claim 4, characterized in that, One end of the push rod (3.3) is provided with a threaded hole, and the other end is provided with a stud that is threadedly connected to the threaded hole. Each push rod (3.3) is spliced ​​together with the other through the threaded connection of the stud and the threaded hole.

6. A construction method, characterized in that, The application of the implanted pile drainage strip construction device as described in any one of claims 1 to 5 includes the following steps: Step S1: Connect one side of the drainage hose (1) to the drainage hose insert (2); Step S2: Lower the drainage belt insert (2) into the cement soil and ensure that the other side of the drainage belt insert (2) is movably connected to the outer wall of the precast pipe pile (4); Step S3: The driving mechanism (3) drives the drainage belt insert (2) to move downward, while ensuring that the drainage belt (1) is in full contact with the inner wall of the drainage channel; Step S4: When the drainage belt boot (2) sinks to the predetermined installation depth with the drainage belt (1), the drainage belt (1) is cut off.

7. The construction method according to claim 6, characterized in that, The drive mechanism (3) includes a transfer machine (3.1), a push rod machine (3.2), and several push rods (3.3) connected to each other. Step S3 includes: Step S31: The transfer machine (3.1) moves to the precast pipe pile (4) and erects the top rod machine (3.2). After completion, the first top rod (3.3) is installed on the drive end of the top rod machine (3.2). Step S32: The driving mechanism (3) drives the top rod (3.3) to move downward and splices the next top rod (3.3) at the upper end of the top rod (3.3) until the lower end of the first top rod (3.3) abuts against the drainage belt insert (2); Step S33: The push rod machine (3.2) drives the push rod (3.3) to move downward and splice the remaining push rods (3.3) upward, while ensuring that the drainage strip (1) is in full contact with the inner wall of the drainage channel.

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