Method for installing the plug in the core of a closed pipe pile

Abstract

This invention relates to the technical field of pipe piles and discloses a method for installing a plug to seal the core of a pipe pile, comprising the following installation steps: 1) The pipe pile is embedded in the soil, with a core inside and an installation position at the top of the core; two wedges are placed at the installation position of the core; 2) A plug plate is placed at the installation position of the core, with the inner sides of the two wedges embedded in the plug plate, the outer sides of the wedges abutting against the inner wall of the core, and the outer periphery of the plug plate abutting against the inner wall of the core; 3) The two wedges are driven upward and the plug plate is driven downward until the plug plate and the two wedges are fixed relative to each other in the core, thus sealing the core. In this way, after the pipe pile is driven to a set depth using a pile driver, the installation position is sealed by the plug plate and the two wedges, preventing the core from being filled with soil or cement slurry, which would prevent the subsequent construction of the reinforcing cage and filling concrete.

Description

Technical Field

[0001] This invention patent relates to the technical field of pipe piles, and more specifically, to a method for installing a plug in the core of a sealed pipe pile. Background Technology

[0002] The pile core refers to the circular portion in the middle of the pipe pile body, commonly used in pile foundation engineering. During construction, the pile core serves to strengthen the pile body and its bearing capacity, and can also act as a formwork for pouring the pile concrete.

[0003] In the existing technology, when the construction working surface is higher than the design pile top elevation during the construction of pipe piles, a special pile driver is required to drive the pipe pile to the design elevation. After the pile driver is pulled out, the pile core is easily filled with mud or cement slurry, which makes it impossible to construct the reinforcing cage and filling concrete later. Measures need to be taken to clean the pile core before construction, and the cleaning process is time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to provide a method for installing a plug in the core of a closed pipe pile, which aims to solve the problem in the prior art that the core is easily filled with soil or cement slurry after the pile driver is pulled out.

[0005] This invention is implemented as follows: a method for installing a plug in a sealed pipe pile core, comprising the following installation steps:

[0006] 1) The pipe pile is embedded in the soil, and the inside of the pipe pile has a pile core. The upper part of the pile core has an installation position. Two wedges are placed at the installation position of the pile core.

[0007] 2) Place a plug plate at the installation position of the pile core, with the inner sides of the two wedges embedded in the plug plate, the outer sides of the wedges abutting against the inner wall of the pile core, and the outer periphery of the plug plate abutting against the inner wall of the pile core.

[0008] 3) Drive the two wedges to move upwards and drive the stop plate to move downwards until the stop plate and the two wedges are fixed in the pile core and the pile core is sealed.

[0009] Optionally, in installation step 3), while driving the two wedges to move upward, the stopper plate is simultaneously driven to move downward.

[0010] Optionally, the wedge has an upright surface on its outer side and an inclined surface on its inner side, and the wedge is arranged inclined inward along the top-to-bottom direction; in the installation step 2), the upright surface abuts against the inner wall of the pile core, and the inclined surface is embedded in the plug plate.

[0011] Optionally, the outer side of the plug plate is provided with two grooves; in the installation step 2), when the plug plate is placed in the installation position, the inner side of the wedge is embedded in the groove, the inclined surface is inclined to abut against the bottom of the groove, and the upright surface abuts against the inner wall of the pile core.

[0012] Optionally, the bottom of the groove has a bottom surface, which is inclined in the same direction as the inclined surface; in the installation step 2), after the inner side of the wedge is embedded in the groove, the inclined surface and the bottom surface abut against each other.

[0013] Optionally, a lifting rope is connected between the two wedges, with each end of the lifting rope connected to one of the two wedges respectively; in installation step 2), the two wedges are placed in the installation position by holding the middle of the lifting rope.

[0014] When the stopper plate is placed in the installation position and the inner sides of the two wedges are embedded in the grooves, the two wedges are driven to move upward synchronously by pulling the middle of the lifting rope upward.

[0015] Optionally, when the two wedges are driven to move upward synchronously by pulling the lifting rope upward, the middle part of the stopper plate is pressed downward, driving the stopper plate to move downward synchronously. The wedges and the stopper plate move in an up-down misalignment, and the inclined surface and the bottom surface move in an inclined misalignment towards each other until the stopper plate and the wedges are relatively fixed in the pile core.

[0016] Optionally, the outer periphery of the plug plate has a pressure wall formed between two grooves. In the installation step 2), after the plug plate is fixed in the pile core, the pressure wall presses against the inner wall of the pile core.

[0017] An airbag ring is provided on the pressure wall, and the airbag ring extends circumferentially along the pressure wall; the inner side of the airbag ring is embedded in the plug plate, and the outer side of the airbag ring is exposed on the outer periphery of the pressure wall; an airbag block is provided on the bottom surface, and the two ends of the airbag ring are respectively connected to the airbag block, and the end of the airbag ring has a one-way valve, which restricts the gas in the airbag block to flow unidirectionally to the airbag ring;

[0018] In installation step 3), as the wedge and the stopper move up and down in a misaligned manner, the airbag block is pressed by the wedge, the gas in the airbag block flows unidirectionally to the airbag ring, and the airbag ring expands outward and presses against the inner wall of the pile core.

[0019] Optionally, the lifting rope has a longitudinally arranged threaded cylinder in the middle, a drive rod is threaded through the threaded cylinder, the drive rod is threadedly connected to the threaded rod, and the drive rod has a lower section below the threaded cylinder and an upper section above the threaded cylinder; the wedge has an extension to the upper extension section;

[0020] A rotating cylinder is fitted around the outer periphery of the lower section, and horizontal rods are arranged horizontally on both sides of the rotating cylinder. An elastic pad is provided at the outer end of the horizontal rod.

[0021] In installation step 2), after the stopper plate is placed at the installation position, the drive rod is pre-rotated until the bottom of the drive rod abuts against the middle of the stopper plate, the elastic pad of the horizontal rod abuts against the upper extension of the wedge, and the lifting rope is in a straight state.

[0022] As the drive rod continues to rotate downwards a set distance, the bottom pressure plate of the drive rod moves downwards, and the lifting rope pulls the two wedges upwards. As the wedges move upwards, the elastic pad is compressed and deformed by the upper extension.

[0023] Optionally, a plurality of hollow cylinders are arranged at intervals below the threaded cylinder. Springs are provided on both sides of the hollow cylinders. The upper end of the springs is connected to the outside of the hollow cylinders, and the lower end of the springs is connected to the lifting rope. The springs are arranged at an outward inclination along the top-to-bottom direction.

[0024] In installation step 2), after the drive rod passes through the threaded cylinder, it passes through multiple hollow cylinders from top to bottom. During the downward rotation of the drive rod, the lifting ropes converge towards each other, and the springs on both sides of the hollow cylinder are stretched, applying tension to the lifting ropes to assist in driving the wedge to move upward.

[0025] Compared with existing technologies ， The method for installing a plug in the core of a closed pipe pile provided by the present invention involves, after the pipe pile is driven into a set depth by a pile driver, a plug plate and two wedges are fixed in the core to seal the installation position, thereby preventing the core from being filled with soil or cement slurry, which would prevent the subsequent construction of the reinforcing cage and filling concrete. Attached Figure Description

[0026] Figure 1 This is a construction diagram showing the plug plate and two wedges fixed relative to each other in the pile core, as provided by the present invention.

[0027] Figure 2 This is a top view of the plug plate provided by the present invention;

[0028] Figure 3 This is a cross-sectional schematic diagram of the stopper plate and two wedges provided by the present invention;

[0029] Figure 4 This is a top view of the plug plate provided by the present invention;

[0030] Figure 5 This is a cross-sectional schematic diagram of step 3 of the construction process provided by the present invention. Detailed Implementation

[0031] 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.

[0032] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0033] 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.

[0034] Reference Figure 1-5 The image shown is a preferred embodiment of the present invention.

[0035] The pile plug installation method for the core 101 of the closed pipe pile 100 provided by the present invention includes the following installation steps:

[0036] 1) Pipe pile 100 is embedded in the soil. Pipe pile 100 has a core 101 inside. The upper part of the core 101 has an installation position. Two wedges 210 are placed at the installation position of the core 101.

[0037] 2) Place the plug plate 200 at the installation position of the pile core 101. The inner sides of the two wedges 210 are embedded in the plug plate 200, the outer sides of the wedges 210 abut against the inner wall of the pile core 101, and the outer periphery of the plug plate 200 abuts against the inner wall of the pile core 101.

[0038] 3) Drive the two wedges 210 to move upward and drive the stop plate 200 to move downward until the stop plate 200 and the two wedges 210 are fixed relative to each other in the pile core 101 and the pile core 101 is closed.

[0039] The above-mentioned method for installing the plug in the core 101 of the closed pipe pile 100 involves sending the pipe pile 100 to a set depth using a pile driver, and then fixing the plug plate 200 and two wedges 210 in the core 101 to seal the installation location, thereby preventing the core 101 from being filled with soil or cement slurry, which would prevent the subsequent construction of the reinforcing cage and filling concrete.

[0040] In installation step 3), while driving the two wedges 210 to move upward, the plug plate 200 is simultaneously driven to move downward. This causes the inner side of the plug plate 200 to be embedded in the plug plate 200, thus fixing the plug plate 200 and the wedges 210 relatively in the pile core 101.

[0041] The wedge 210 has a vertical surface on its outer side and an inclined surface on its inner side. The wedge 210 is arranged inclined inwards along a top-to-bottom direction. In installation step 2), the vertical surface abuts against the inner wall of the pile core 101, and the inclined surface is embedded in the plug plate 200. This clamps and fixes the wedge 210 between the plug plate 200 and the inner wall of the pile core 101.

[0042] The outer side of the plug plate 200 is provided with two grooves 201. In installation step 2), after the plug plate 200 is placed in the installation position, the inner side of the wedge 210 is embedded in the groove 201, with the inclined surface abutting against the bottom of the groove 201 and the upright surface abutting against the inner wall of the pile core 101. In this way, the design of the groove 201 provides an installation position for the plug plate 200, and by pressing down the plug plate 200 and lifting the wedge 210, the wedge 210 is embedded in the groove 201, resulting in a tight and stable overall structure.

[0043] The bottom of the groove 201 has a bottom surface, which is inclined in the same direction as the inclined surface; in installation step 2), after the inner side of the wedge 210 is embedded in the groove 201, the inclined surface and the bottom surface abut against each other.

[0044] A lifting rope 211 is connected between the two wedges 210, and the two ends of the lifting rope 211 are respectively connected to the two wedges 210; in installation step 2), the two wedges 210 are placed in the installation position by holding the middle of the lifting rope 211.

[0045] When the stopper plate 200 is placed in the installation position and the inner sides of the two wedges 210 are embedded in the grooves 201, the two wedges 210 are driven to move upward synchronously by pulling the middle of the lifting rope 211. In this way, the design of the lifting rope 211 enables convenient and synchronous lifting of the two wedges 210.

[0046] When the lifting rope 211 is pulled upwards, driving the two wedges 210 to move upwards synchronously, they press down against the middle of the stopper plate 200, driving the stopper plate 200 to move downwards synchronously. The wedges 210 and the stopper plate 200 move in a vertically offset manner, and the inclined surface and the bottom surface move in an offset manner towards each other until the stopper plate 200 and the wedges 210 are relatively fixed in the pile core 101. In this way, by pressing down the stopper plate 200 and pulling up the wedges 210, the inclined surface and the bottom surface are made to fit and fix together, and the overall structure is compact and stable.

[0047] The outer periphery of the plug plate 200 has a pressure wall formed between two grooves 201. In installation step 2), after the plug plate 200 is relatively fixed in the pile core 101, the pressure wall presses against the inner side wall of the pile core 101.

[0048] In this embodiment, an airbag ring 202 is provided on the pressure wall, and the airbag ring 202 extends circumferentially along the pressure wall; the inner side of the airbag ring 202 is embedded in the plug plate 200, and the outer side of the airbag ring 202 is exposed on the outer periphery of the pressure wall; an airbag block 203 is provided on the bottom surface, and the two ends of the airbag ring 202 are respectively connected to the airbag block 203, and the end of the airbag ring 202 has a one-way valve, which restricts the gas in the airbag block 203 from flowing unidirectionally to the airbag ring 202;

[0049] In installation step 3), as the wedge 210 and the stopper plate 200 move vertically and vertically, the airbag block 203 is pressed against by the wedge 210. The gas in the airbag block 203 flows unidirectionally towards the airbag ring 202, causing the airbag ring 202 to expand outward and press against the inner wall of the pile core 101. This strengthens the connection between the pressing wall and the side wall of the pile core 101, effectively filling the tiny cracks between the pressing wall and the side wall of the pile core 101.

[0050] In this embodiment, a longitudinally arranged threaded cylinder 220 is provided in the middle of the lifting rope 211, and a drive rod 221 is passed through the threaded cylinder 220. The drive rod 221 is threadedly connected to the threaded rod. The drive rod 221 has a lower section below the threaded cylinder 220 and an upper section above the threaded cylinder 220. The wedge 210 has an upper extension section.

[0051] A rotating cylinder 230 is fitted around the lower section. Horizontal rods 231 extend outward from both sides of the rotating cylinder 230 and are arranged horizontally. Elastic pads are provided at the outer ends of the horizontal rods 231.

[0052] In installation step 2), after the stopper plate 200 is placed in the installation position, the drive rod 221 is pre-rotated until the bottom of the drive rod 221 abuts against the middle of the stopper plate 200, the elastic pad of the horizontal rod 231 abuts against the upper extension of the wedge 210, and the lifting rope 211 is in a straight state.

[0053] As the drive rod 221 continues to rotate downwards at the set distance, the bottom of the drive rod 221 presses against the stop plate 200 downwards, and the lifting rope 211 pulls the two wedges 210 upwards. As the wedges 210 move upwards, the elastic pad is compressed and deformed by the upper extension. In this way, by rotating the drive rod 221 and simultaneously pulling it, the drive rod 221 presses down on the stop plate 200 and simultaneously lifts the two wedges 210, making the overall construction operation simple.

[0054] Specifically, the positioning cylinder presses against the stopper plate 200, and the lower section passes through the positioning cylinder and presses against the stopper plate 200. While the drive rod 221 rotates, the positioning cylinder does not rotate. As the two wedges 210 move upward, they compress the elastic pad to ensure that the two wedges 210 are subjected to uniform force and to avoid the two wedges 210 being at different horizontal heights.

[0055] Below the threaded cylinder 220, there are multiple hollow cylinders 240 arranged at intervals. Springs 241 are provided on both sides of the hollow cylinder 240. The upper end of the spring 241 is connected to the outside of the hollow cylinder 240, and the lower end of the spring 241 is connected to the lifting rope 211. The springs 241 are arranged outward in a downward direction.

[0056] In installation step 2), after the drive rod 221 passes through the threaded cylinder 220, it passes through multiple hollow cylinders 240 from top to bottom. During the downward rotation of the drive rod 221, the lifting ropes 211 converge towards each other, and the springs 241 on both sides of the hollow cylinder 240 are stretched, applying tension to the lifting ropes 211 to assist the drive wedges 210 in moving upward. In this way, the hollow cylinder 240 and the drive rod 221 are threadedly engaged. After the drive rod 221 passes through the hollow cylinder 240, the springs 241 are stretched. Under the stretching of the springs 241 on both sides, the drive rod 221 moves downward relative to the hollow cylinder 240, while the hollow cylinder 240 does not rotate. The hollow cylinder 240 moves upward relative to the stopper plate 200, and the springs 241 on both sides continue to be stretched. This allows the two wedges 210 to be lifted while the drive rod 221 is rotated, making the construction operation simple and convenient.

[0057] 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 method of installing a pile plug to close off the core of a tubular pile, characterised in that, The installation process includes the following steps: 1) The pipe pile is embedded in the soil, and the inside of the pipe pile has a pile core. The upper part of the pile core has an installation position. Two wedges are placed at the installation position of the pile core. 2) Place a plug plate at the installation position of the pile core, with the inner sides of the two wedges embedded in the plug plate, the outer sides of the wedges abutting against the inner wall of the pile core, and the outer periphery of the plug plate abutting against the inner wall of the pile core. 3) Drive the two wedges to move upwards and drive the stop plate to move downwards until the stop plate and the two wedges are fixed in the pile core and the pile core is sealed. The wedge has an upright surface on its outer side and an inclined surface on its inner side. The wedge is arranged inclined inward along the top-to-bottom direction. In installation step 2), the upright surface abuts against the inner wall of the pile core, and the inclined surface is embedded in the plug plate. The outer side of the plug plate is provided with two grooves; in installation step 2), when the plug plate is placed in the installation position, the inner side of the wedge is embedded in the groove, the inclined surface is inclined to abut the bottom of the groove, and the upright surface abuts the inner wall of the pile core. A lifting rope is connected between the two wedges, with each end of the lifting rope connected to one of the two wedges respectively. The outer periphery of the plug plate has a pressure wall formed between two grooves. In installation step 2), after the plug plate is fixed in the pile core, the pressure wall presses against the inner wall of the pile core. An airbag ring is provided on the pressure wall, and the airbag ring extends circumferentially along the pressure wall; the inner side of the airbag ring is embedded in the plug plate, and the outer side of the airbag ring is exposed on the outer periphery of the pressure wall; the bottom of the groove has a bottom surface, and the bottom surface is inclined in the same direction as the inclined surface; an airbag block is provided on the bottom surface, and both ends of the airbag ring are respectively connected to the airbag block, and the end of the airbag ring has a one-way valve, which restricts the gas in the airbag block to flow unidirectionally to the airbag ring; The lifting rope has a longitudinally arranged threaded cylinder in the middle, and a drive rod is threaded through the threaded cylinder. The drive rod is threaded to the threaded cylinder, and the drive rod has a lower section below the threaded cylinder and an upper section above the threaded cylinder; the wedge has an upper extension section. A rotating cylinder is fitted around the outer periphery of the lower section, and horizontal rods are arranged horizontally on both sides of the rotating cylinder. An elastic pad is provided at the outer end of the horizontal rod. Below the threaded cylinder are multiple hollow cylinders arranged at intervals. Springs are provided on both sides of each hollow cylinder. The upper end of each spring is connected to the outside of the hollow cylinder, and the lower end of each spring is connected to the lifting rope. The springs are arranged at an outward tilt along the top-to-bottom direction.

2. The method of installing a pile plug to close off the core of a pipe pile according to claim 1, wherein, In installation step 3), while driving the two wedges to move upward, the stopper plate is simultaneously driven to move downward.

3. A method of installing a pile plug to close off the core of a tubular pile according to claim 1 or 2, wherein, In installation step 2), after the inner side of the wedge is embedded in the groove, the inclined surface abuts against the bottom surface.

4. The method of installing a plug for closing the core of a tubular pile according to claim 3, wherein In installation step 2), the two wedges are placed in the installation position by holding the middle of the lifting rope; When the stopper plate is placed in the installation position and the inner sides of the two wedges are embedded in the grooves, the two wedges are driven to move upward synchronously by pulling the middle of the lifting rope upward.

5. The method of installing a closure plug for a closed tube pile core according to claim 4, wherein When the two wedges are driven to move upward synchronously by pulling the lifting rope upward, they press down against the middle of the stopper plate, driving the stopper plate to move downward synchronously. The wedges and the stopper plate move in an up-down misalignment, and the inclined surface and the bottom surface move in an inclined misalignment towards each other until the stopper plate and the wedges are relatively fixed in the pile core.

6. The method for installing the plug in the core of a closed pipe pile as described in claim 5, characterized in that, In installation step 3), as the wedge and the stopper move up and down in a misaligned manner, the airbag block is pressed by the wedge, the gas in the airbag block flows unidirectionally to the airbag ring, and the airbag ring expands outward and presses against the inner wall of the pile core.

7. The method for installing the plug in the core of a closed pipe pile as described in claim 4, characterized in that, In installation step 2), after the stopper plate is placed in the installation position, the drive rod is pre-rotated until the bottom of the drive rod abuts against the middle of the stopper plate, the elastic pad of the horizontal rod abuts against the upper extension of the wedge, and the lifting rope is in a straight state. As the drive rod continues to rotate downwards a set distance, the bottom pressure plate of the drive rod moves downwards, and the lifting rope pulls the two wedges upwards. As the wedges move upwards, the elastic pad is compressed and deformed by the upper extension.

8. The method for installing the plug in the core of a closed pipe pile as described in claim 7, characterized in that, In installation step 2), after the drive rod passes through the threaded cylinder, it passes through multiple hollow cylinders from top to bottom; during the downward rotation of the drive rod, the lifting ropes converge towards each other, and the springs on both sides of the hollow cylinder are stretched, applying tension to the lifting ropes to assist in driving the wedge to move upward.

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