CN-117661562-B - Anti-pulling pile and construction method thereof

CN117661562BCN 117661562 BCN117661562 BCN 117661562BCN-117661562-B

Abstract

The application relates to the technical field of pile foundations, in particular to a uplift pile and a construction method thereof, wherein the uplift pile comprises a pile body, a pile body and a pile body, wherein the pile body is provided with an embedded section inserted into the ground, and a side peripheral surface connected with the embedded section; the anti-pulling mechanism is arranged on the embedded section and comprises a plurality of anti-pulling plates which can stretch along the radial direction of the pile body, and a rotating shaft which is rotationally connected in the pile body, one end of the rotating shaft is connected with the anti-pulling mechanism, and the rotating shaft drives the anti-pulling plates to stretch along the radial direction through rotation so that the peripheral surfaces of the opposite sides of the anti-pulling plates extend or retract inwards. The anti-pulling pile is characterized in that the anti-pulling plates are driven to radially stretch through rotating the rotating shaft, when the anti-pulling plates extend out relative to the side peripheral surfaces, the contact area between the anti-pulling piles and soil is increased, so that the bearing capacity of the anti-pulling piles is improved, the length or the diameter of the anti-pulling piles can be reduced while the bearing capacity is ensured, the cost is reduced, and when the anti-pulling plates retract relative to the side peripheral surfaces, the anti-pulling piles are pulled out and recovered more easily.

Inventors

LI JINHUI
CAI DONGTING
OU JINPING

Assignees

哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院)

Dates

Publication Date: 20260505
Application Date: 20231219

Claims (5)

1. A pulling-resistant pile, which comprises a pile body, characterized by comprising the following steps: a pile body having an embedded section for being inserted into the ground and a side circumferential surface connected to the embedded section; the anti-pulling mechanism is arranged on the embedded section and comprises a plurality of anti-pulling plates, and the plurality of anti-pulling plates can stretch out and draw back along the radial direction of the pile body; the rotating shaft is rotationally connected in the pile body, one end of the rotating shaft is connected with the anti-pulling mechanism, and the rotating shaft drives the anti-pulling plates to radially stretch out and retract through rotation, so that a plurality of the anti-pulling plates extend out or retract relative to the lateral peripheral surface; one end of the rotating shaft, which is away from the anti-pulling mechanism, extends out of the pile body; The anti-pulling mechanism further comprises a fixed plate and a telescopic control plate, the fixed plate is fixedly connected to the embedded section, a plurality of anti-pulling plates are arranged between the fixed plate and the telescopic control plate, and the fixed plate is matched with the telescopic control plate to axially limit and radially guide the anti-pulling plate; The rotating shaft penetrates through the fixed plate and is fixedly connected with the telescopic control plate, and the rotating shaft drives the telescopic control plate to synchronously rotate, so that the telescopic control plate drives the plurality of anti-pulling plates to radially stretch out and retract, and the plurality of anti-pulling plates extend out or retract relative to the lateral peripheral surface; The fixing plate is provided with a fixing plate body, a circular through hole, a plurality of first radial rails and a plurality of first guide blocks, wherein the circular through hole, the first radial rails and the first guide blocks are arranged on the fixing plate body; the first guide blocks are arranged at one end of the first radial tracks, which is far away from the center of the fixed plate body, in a one-to-one correspondence manner, and are in radial sliding connection with the anti-pulling plate, and one end of the first guide blocks, which is far away from the fixed plate body, is used for axially limiting the anti-pulling plate; The second guide blocks are provided with guide bodies, guide first ends and guide second ends which are positioned at two ends of the guide bodies, wherein the guide first ends are slidably connected in the first radial rails and axially limited with the fixed plate body, the guide bodies are connected with the limiting holes, and the guide second ends are slidably connected with the telescopic control plates; The telescopic control plate is provided with a plurality of arc-shaped tracks, the second guide end is connected in the arc-shaped tracks in a sliding manner, and the arc-shaped tracks are used for driving the second guide blocks to slide along the first radial tracks; The arc-shaped rails are provided with rail first ends and rail second ends, and when the second guide blocks are positioned at the rail first ends, the pulling-resistant plates are in a contracted state; When the second guide block is positioned at the second end of the track, the anti-pulling plate is in a state of extending out of the side peripheral surface; The distances from the arc-shaped tracks to the centers of the telescopic control boards are gradually reduced along the direction from the second ends of the tracks to the first ends of the tracks.
2. The uplift pile of claim 1, wherein the plurality of uplift plates includes a plurality of first uplift plates and a plurality of second uplift plates, the plurality of first uplift plates and the plurality of second uplift plates are axially distributed, the plurality of first uplift plates are evenly spaced apart in a circumferential direction, the plurality of second uplift plates are evenly spaced apart in the circumferential direction, and the first uplift plates and the second uplift plates are offset in the circumferential direction.
3. A uplift pile according to claim 2, characterised in that a number of first uplift plates and a number of second uplift plates are arranged in axial stack.
4. A uplift pile according to claim 2, characterised in that a number of the first uplift plates are located between two adjacently arranged second uplift plates in the circumferential direction.
5. A construction method based on the uplift pile according to any one of claims 1 to 4, comprising: Moving the anti-pulling pile to a designated pile driving point, and driving a plurality of anti-pulling plates to shrink inwards relative to the side peripheral surface by rotating a rotating shaft; applying pressure to the uplift pile to sink the embedded section to a predetermined depth, wherein one end of the rotating shaft, which is away from the uplift mechanism, is exposed from the piling point; The rotating shaft is rotated to drive the plurality of anti-pulling plates to extend out of the side peripheral surface, so that the anti-pulling pile is buried; When the anti-pulling pile is recovered, the rotating shaft is reversely rotated to drive the anti-pulling plates to retract into the side peripheral surface, and the anti-pulling pile is pulled out.

Description

Anti-pulling pile and construction method thereof Technical Field The application relates to the technical field of pile foundations, in particular to a uplift pile and a construction method thereof. Background The uplift pile is a pile for resisting an uplift load such as groundwater buoyancy and seawater buoyancy, and is widely used in the civil engineering field. In order to improve the bearing capacity of the uplift pile of the pile, the length or the diameter of the uplift pile is generally increased to improve the bearing capacity of the uplift pile, but more materials are needed for increasing the length and the diameter, so that the cost is increased, and meanwhile, the temporarily used uplift pile is more difficult to recover due to the fact that the length and the diameter are increased, a great amount of manpower and material resources are needed for recovering the uplift pile, and even the uplift pile cannot be recovered, so that the cost is further increased. Accordingly, the prior art has drawbacks and disadvantages, and needs to be further improved and developed. Disclosure of Invention In view of the shortcomings of the prior art, the application aims to provide a uplift pile and a construction method thereof, and aims to solve the problem that the structure of the uplift pile in the prior art cannot achieve both bearing capacity and cost. The technical scheme adopted for solving the technical problems is as follows: A uplift pile, comprising: a pile body having an embedded section for being inserted into the ground and a side circumferential surface connected to the embedded section; the anti-pulling mechanism is arranged on the embedded section and comprises a plurality of anti-pulling plates, and the plurality of anti-pulling plates can stretch out and draw back along the radial direction of the pile body; The rotating shaft is rotationally connected in the pile body, one end of the rotating shaft is connected with the anti-pulling mechanism, and the rotating shaft drives the anti-pulling plates to radially stretch out and retract through rotation, so that a plurality of the anti-pulling plates extend out or retract relative to the lateral peripheral surfaces. Optionally, one end of the rotating shaft, which is away from the anti-pulling mechanism, extends out of the pile body; The anti-pulling mechanism further comprises a fixed plate and a telescopic control plate, the fixed plate is fixedly connected to the embedded section, a plurality of anti-pulling plates are arranged between the fixed plate and the telescopic control plate, and the fixed plate is matched with the telescopic control plate to axially limit and radially guide the anti-pulling plate; The rotating shaft penetrates through the fixing plate and is fixedly connected with the telescopic control plate, and the rotating shaft drives the telescopic control plate to synchronously rotate, so that the telescopic control plate drives the plurality of anti-pulling plates to radially stretch out and retract, and the plurality of anti-pulling plates extend out or retract relative to the lateral peripheral surface. Optionally, the fixing plate is provided with a fixing plate body, a circular through hole, a plurality of first radial rails and a plurality of first guide blocks, wherein the circular through hole, the plurality of first radial rails and the plurality of first guide blocks are arranged on the fixing plate body; The first guide blocks are arranged at one ends of the first radial tracks, which are far away from the center of the fixed plate body, in one-to-one correspondence, and are in radial sliding connection with the anti-pulling plate, and one ends of the first guide blocks, which are far away from the fixed plate body, are used for axially limiting the anti-pulling plate. Optionally, the anti-pulling plates comprise anti-pulling plate bodies, limiting holes, second radial tracks and second guide blocks, wherein the second radial tracks and the second guide blocks are arranged on angular bisectors of the anti-pulling plate bodies, the second guide blocks are provided with guide bodies, guide first ends and guide second ends which are positioned at two ends of the guide bodies, the guide first ends are slidably connected in the first radial tracks and axially limited with the fixing plate bodies, the guide bodies are connected with the limiting holes, the guide second ends are slidably connected with the telescopic control plates, and the first guide blocks are slidably connected with the second radial guide rails. Optionally, the telescopic control board is provided with a plurality of arc-shaped tracks, the second guide end is slidably connected in the arc-shaped tracks, and the arc-shaped tracks are used for driving the second guide blocks to slide along the first radial tracks; The arc-shaped rails are provided with rail first ends and rail second ends, and when the second guide blocks are positioned at the rail fi