An anti-pulling pile and a construction method thereof

Abstract

This application relates to the field of pile foundation technology, specifically providing an anti-tension pile and its construction method. The anti-tension pile includes: a pile body having an embedded section inserted into the ground and a side surface connected to the embedded section; an anti-tension mechanism disposed on the embedded section, the anti-tension mechanism including a plurality of anti-tension plates, all of which can extend and retract radially along the pile body; and a rotating shaft rotatably connected to the pile body, with one end of the rotating shaft connected to the anti-tension mechanism. The rotating shaft drives the anti-tension plates to extend and retract radially by rotating, so that the plurality of anti-tension plates extend or retract relative to the side surface. By rotating the rotating shaft, the anti-tension plates are driven to extend and retract radially. When the plurality of anti-tension plates extend relative to the side surface, the contact area between the anti-tension pile and the soil increases, thereby improving the bearing capacity of the anti-tension pile. This can reduce the length or diameter of the anti-tension pile while ensuring the bearing capacity, thus reducing costs. When the plurality of anti-tension plates retract relative to the side surface, the anti-tension pile is easier to pull out and retrieve.

Description

Technical Field

[0001] This application relates to the field of pile foundation technology, and in particular to an anti-uplift pile and its construction method. Background Technology

[0002] An anti-uplift pile is a type of pile used to resist uplift loads such as buoyancy from groundwater and seawater, and it is widely used in the field of civil engineering.

[0003] To improve the uplift bearing capacity of piles, existing technologies typically increase the length or diameter of the piles. However, increasing the length and diameter requires more material, which increases costs. Furthermore, while increasing the length and diameter can improve the bearing capacity of temporarily used uplift piles, it also makes them more difficult to recover. Recovering and pulling out uplift piles requires a lot of manpower and resources, and may even be impossible, further increasing costs.

[0004] Therefore, existing technologies have defects and shortcomings, and need further improvement and development. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide an anti-tension pile and its construction method, which aims to solve the problem that the structure of anti-tension piles in the prior art cannot take into account both bearing capacity and cost.

[0006] The technical solution adopted by this application to solve the technical problem is as follows:

[0007] An anti-tension pile, comprising:

[0008] A pile body having an embedded section for insertion into the ground and a side circumferential surface connected to the embedded section;

[0009] A pull-out resisting mechanism is provided on the embedded section, and the pull-out resisting mechanism includes a plurality of pull-out resisting plates, all of which can extend and retract radially along the pile body;

[0010] A rotating shaft is rotatably connected to the pile body, and one end of the rotating shaft is connected to the pull-out mechanism. The rotating shaft drives the pull-out plates to extend or retract radially by rotating, so that a plurality of the pull-out plates extend or retract relative to the side circumferential surface.

[0011] Optionally, one end of the rotating shaft that is away from the pull-out mechanism extends out of the pile body;

[0012] The pull-out resistance mechanism further includes a fixed plate and a telescopic control plate. The fixed plate is fixedly connected to the embedded section. A plurality of pull-out resistance plates are disposed between the fixed plate and the telescopic control plate. The fixed plate cooperates with the telescopic control plate to axially limit and radially guide the pull-out resistance plates.

[0013] The rotating shaft passes through the fixed plate and is fixedly connected to the telescopic control plate. The rotating shaft drives the telescopic control plate to rotate synchronously, so that the telescopic control plate drives the plurality of anti-pull plates to perform radial extension and retraction, so that the plurality of anti-pull plates extend or retract relative to the side circumferential surface.

[0014] Optionally, the fixing plate is provided with a fixing plate body, and a circular through hole, a plurality of first radial tracks and a plurality of first guide blocks disposed on the fixing plate body; the circular through hole is disposed at the center of the fixing plate body, and the rotating shaft passes through the circular through hole and can rotate relative to the circular through hole;

[0015] A plurality of first guide blocks are respectively disposed at one end of a plurality of first radial tracks away from the center of the fixed plate body. The first guide blocks are slidably connected to the pull-out plate in the radial direction. The end of the first guide block away from the fixed plate body limits the pull-out plate axially.

[0016] Optionally, each of the aforementioned tensile plates includes: a tensile plate body, a limiting hole, and a second radial track and a second guide block disposed on the angle bisector of the tensile plate body; the second guide block is provided with a guide body, and a first guide end and a second guide end located at both ends of the guide body, the first guide end being slidably connected to the first radial track and axially limited by the fixed plate body, the guide body being connected to the limiting hole, and the second guide end being slidably connected to the telescopic control plate; the first guide block is slidably connected to the second radial guide rail.

[0017] Optionally, the telescopic control plate is provided with a plurality of arc-shaped tracks, and the second end of the guide is slidably connected in the arc-shaped tracks. The arc-shaped tracks are used to drive the second guide block to slide along the first radial track.

[0018] Each of the aforementioned arc-shaped tracks has a first end and a second end. When the second guide block is located at the first end of the track, the anti-pull plate is in a retracted state.

[0019] When the second guide block is located at the second end of the track, the pull-out plate is in a state of extending out of the side circumferential surface.

[0020] Optionally, the distance between the center of the several arc-shaped tracks and the center of the telescopic control plate decreases in the direction from the second end of the track to the first end of the track.

[0021] Optionally, the tensile test plates include a plurality of first tensile test plates and a plurality of second tensile test plates, the plurality of first tensile test plates and the plurality of second tensile test plates are distributed along the axial direction, the plurality of first tensile test plates are evenly spaced apart along the circumferential direction, the plurality of second tensile test plates are evenly spaced apart along the circumferential direction, and the first tensile test plates and the second tensile test plates are staggered along the circumferential direction.

[0022] Optionally, a number of first tensile plates and a number of second tensile plates are stacked axially.

[0023] Optionally, along the circumferential direction, several of the first tensile plates are located between two adjacent second tensile plates.

[0024] Another technical solution used in this application to solve the technical problem is as follows: a construction method based on the above-mentioned tension piles, comprising:

[0025] Step S10: Move the anti-tension pile to the designated pile driving point, and drive several anti-tension plates to retract inward relative to the side circumferential surface by rotating the shaft;

[0026] Step S20: Apply pressure to the anti-pull pile to sink the embedded section to a predetermined depth, wherein the end of the rotating shaft opposite to the anti-pull mechanism is exposed from the pile driving point;

[0027] Step S30: By rotating the shaft, a number of the tensile plates extend out of the side circumference, thus completing the installation of the tensile pile;

[0028] Step S40: When the pull-out pile is retrieved, the shaft is rotated in the opposite direction to drive several pull-out plates back into the side circumferential surface and pull out the pull-out pile.

[0029] Beneficial effects:

[0030] This application provides an anti-tension pile and a construction method for the anti-tension pile. The anti-tension pile includes a pile body, an anti-tension mechanism, and a rotating shaft. The anti-tension mechanism is provided with a plurality of anti-tension plates. One end of the rotating shaft is connected to the anti-tension mechanism. Rotating the other end of the rotating shaft causes the rotating shaft to rotate, which in turn causes the anti-tension plates to extend or retract relative to the side surface. When the anti-tension plates extend relative to the side surface, the contact area between the anti-tension pile and the soil increases, thereby improving the bearing capacity of the anti-tension pile. It also allows for a reduction in the diameter of the pile body. While ensuring the bearing capacity, the length or diameter of the anti-tension pile is reduced, thus reducing costs. When it is necessary to recover the anti-tension pile, the anti-tension plates are retracted relative to the side surface, making the anti-tension pile easier to pull out and recover, further reducing costs. Attached Figure Description

[0031] Figure 1This is a three-dimensional structural diagram of the tension pile provided in this application;

[0032] Figure 2 This is a three-dimensional exploded three-dimensional schematic diagram of the anti-uplift pile provided in this application;

[0033] Figure 3 This is another three-dimensional exploded three-dimensional schematic diagram of the anti-uplift pile provided in this application;

[0034] Figure 4 The three-dimensional structural diagram of the fit between the rotating shaft and the tensioning part of the tension pile provided in this application is shown in the following application.

[0035] Figure 5 This is a bottom view of the anti-tension pile provided in this application;

[0036] Figure 6 This is another bottom view of the anti-tension pile provided in this application;

[0037] Figure 7 It is provided in this application Figure 5 A partial sectional view along the I-I direction;

[0038] Figure 8 It is provided in this application Figure 5 A partial sectional view along the II-II direction;

[0039] Figure 9 It is provided in this application Figure 7 A magnified view of point A in the diagram;

[0040] Figure 10 This is a three-dimensional structural diagram of the fixing plate of the anti-tension pile provided in this application;

[0041] Figure 11 This is a top view of the tension plate of the tension pile provided in this application;

[0042] Figure 12 This is a top view of the expansion joint control plate of the pull-out pile provided in this application;

[0043] Figure 13 This is a flowchart illustrating the construction method of the tension pile provided in this application;

[0044] Explanation of reference numerals in the attached figures:

[0045] 10. Anti-tension pile; 11. Pile body; 12. Anti-tension mechanism; 13. Rotating shaft; 111. Embedded section; 112. Side circumference; 121. Fixing plate; 122. Anti-tension plate; 123. Telescopic control plate; 124. Fixing plate body; 125. Circular through hole; 126. First radial track; 127. First guide block; 128. Anti-tension plate body; 129. Limiting hole; 130. Second radial track; 131. Second guide block; 132. Guide body; 133. First guide end; 134. Second guide end; 135. Arc track; 136. First track end; 137. Second track end; 138. Connecting hole; 139. First anti-tension plate; 140. Second anti-tension plate. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0047] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] Tension piles are widely used in super high-rise buildings, heavy-load railway bridges, and large basements to resist the upward buoyancy of groundwater. They are also commonly used in the mooring systems of offshore floating platforms to resist uplift loads from wind and waves. In some large-scale projects, tension piles need to withstand significant loads. Current technology often increases the pile's uplift capacity by increasing its length or diameter, but this is costly. Furthermore, some projects require temporary tension piles because removing abandoned piles requires substantial manpower and resources. Most temporary tension piles are discarded after use, and the disposal of these abandoned piles is a problem that needs to be solved, while also causing environmental pollution.

[0050] Please refer to the following: Figures 1 to 6The first embodiment of this application provides an anti-tension pile 10, which includes a pile body 11, an anti-tension mechanism 12, and a rotating shaft 13. The pile body 11 has an embedded section 111 for insertion into the ground and a side peripheral surface 112 connected to the embedded section 111. The embedded section 111 is embedded in the ground, so that the side peripheral surface 112 is in contact with the soil, providing bearing capacity for the anti-tension pile 10. The anti-tension mechanism 12 is disposed on the embedded section 111 to enhance the bearing capacity of the anti-tension pile 10. The anti-tension mechanism 12 can be configured as one or more. When multiple anti-tension mechanisms 12 are configured, multiple anti-tension mechanisms 12 are equivalent to increasing the length and increasing the diameter. This configuration can further reduce the diameter of the anti-tension pile 10, shorten the length of the anti-tension pile 10, and reduce the anti-tension. The cost of pile 10; the pull-out mechanism 12 includes a plurality of pull-out plates 122, each of which can extend and retract radially along the pile body 11. That is, the pull-out mechanism 12 is composed of a plurality of pull-out plates 122 that can extend and retract radially along the pile body 11. The pull-out plates 122 are used to improve the bearing capacity and pull-out resistance of the pull-out pile 10. Specifically, the pull-out plates 122 extend radially along the pile body 11, allowing them to contact the soil and rub against it, transferring the ground load to the soil or other loads. Furthermore, the pull-out pile 10 also includes a rotating shaft 13, which is rotatably connected to the pile body 11, and one end of the rotating shaft 13 is connected to the pull-out mechanism 12. The rotating shaft 13 rotates... The tension plates 122 are radially extended or retracted relative to the side circumferential surface 112. Extending means the tension plates 122 protrude from the side circumferential surface 112, and retracting means the tension plates 122 are aligned with or recessed relative to the side circumferential surface 112. Specifically, during construction, the embedded section 111 of the tension pile 10 is inserted into the ground. The embedded section 111 is equipped with a tension mechanism 12, which has several tension plates 122. The tension mechanism 12 is connected to a rotating shaft 13. When it is necessary to increase the bearing capacity of the tension pile 10, the rotating shaft 13 is rotated, causing the tension plates 122 to extend relative to the side circumferential surface 112, thus... The increased contact area between the tension pile 10 and the soil enhances its bearing capacity. When the tension pile 10 needs to be retrieved, rotating the shaft 13 causes the opposing circumferential surfaces 112 of all tension plates 122 to retract inward, making the tension pile 10 easier to pull out and retrieve. The tension pile 10 provided in this application can reduce the diameter of the pile body 11, reducing the length or diameter of the tension pile 10 while ensuring bearing capacity, thus reducing costs. Moreover, the tension pile 10 is more convenient to retrieve. By controlling the expansion and contraction of the tension plates 122, the contact area with the soil can be flexibly increased or decreased, thereby improving the bearing capacity of the tension pile 10, reducing costs, and making retrieval more convenient, thus improving the sustainability of the tension pile 10's use.The anti-tension pile 10 is shorter and can be designed with a smaller diameter, making it easier to drive into the ground and improving the construction efficiency of the anti-tension pile 10.

[0051] Please refer to the following: Figures 7 to 9 In some embodiments, the end of the rotating shaft 13 facing away from the pull-out mechanism 12 extends out of the pile body 11 for easy connection of the rotating shaft 13; the pull-out mechanism 12 further includes a fixing plate 121 and a telescopic control plate 123. The fixing plate 121 is fixedly connected to the embedded section 111, and a plurality of pull-out plates 122 are disposed between the fixing plate 121 and the telescopic control plate 123. The fixing plate 121 and the telescopic control plate 123 cooperate to axially limit and radially guide the plurality of pull-out plates 122, so that the pull-out plates 122 cannot detach from the pull-out mechanism 12 and can perform radial telescopic expansion and contraction; the rotating shaft 13 passes through the fixing plate 121 and is fixedly connected to the telescopic control plate 123. The rotating shaft 13 drives the telescopic control plate 123 to rotate synchronously, so that the telescopic control plate 123 drives the plurality of pull-out plates 122 to perform radial telescopic expansion and contraction, that is, the rotation of the telescopic control plate 123 causes the plurality of pull-out plates 122 to extend or retract relative to the side circumferential surface 112. Specifically, by driving the rotating shaft 13 to rotate, the telescopic control plate 123 is simultaneously driven to rotate, and the telescopic control plate 123 drives all the tension plates 122 to radially expand and contract. When it is necessary to increase the bearing capacity of the tension pile 10, the opposite side circumferential surface 112 of the tension plate 122 extends, increasing the contact area between the tension pile 10 and the soil. When retrieving the tension pile 10, the opposite side circumferential surface 112 of the tension plate 122 retracts, making the tension pile 10 easier to pull out. The bearing capacity of the tension pile 10 can be improved without increasing its length or diameter, reducing costs. The expansion and contraction state of the tension plate 122 can be adjusted by controlling the movement of the rotating shaft 13 and the telescopic control plate 123, so that the contact area between the tension pile 10 and the soil can be increased or decreased as needed, thereby increasing or decreasing the bearing capacity of the tension pile 10. At the same time, it is also more convenient and faster to retrieve the tension pile 10, which can effectively reduce costs and improve the construction efficiency and sustainability of the tension pile 10.

[0052] Please refer to the following: Figures 7 to 10In some embodiments, the fixing plate 121 is provided with a fixing plate body 124, a circular through hole 125, a plurality of first radial tracks 126, and a plurality of first guide blocks 127. The circular through hole 125, the plurality of first radial tracks 126, and the plurality of first guide blocks 127 are all disposed on the fixing plate body 124. The fixing plate body 124 is fixedly connected to the pile body 11. The circular through hole 125 is disposed at the center of the fixing plate body 124. The rotating shaft 13 passes through the circular through hole 125 and can rotate relative to the circular through hole 125. The plurality of first guide blocks 127 are all disposed on the fixing plate body 124, and the plurality of first guide blocks 127 are each corresponding to one of the plurality of first radial tracks 126. The first guide blocks 127 are disposed on the first radial tracks 126 away from the center of the fixing plate body 124. At one end, the first guide block 127 is radially slidably connected to the tensile plate 122. The end of the first guide block 127 away from the fixed plate body 124 axially limits the tensile plate 122, that is, the first guide block 127 is fixedly connected to the fixed plate body 124, the first guide block 127 axially limits the tensile plate 122, and the first guide block 127 also makes the tensile plate 122 only able to move radially. Specifically, the fixed plate 121 allows the tensile plate 122 to slide radially and is axially limited by the first guide block 127. Since the tensile plate 122 is limited by the first guide block 127, the rotating shaft 13 can achieve radial expansion and contraction control of the tensile plate 122 by rotation, so as to flexibly adjust the expansion and contraction state of the tensile plate 122 to adapt to different engineering requirements and soil conditions.

[0053] Please refer to the following: Figures 7 to 9 and Figure 11In some embodiments, each of the several tensile-resistant plates 122 includes: a tensile-resistant plate body 128, a limiting hole 129, a second radial track 130, and a second guide block 131; the second radial track 130 and the second guide block 131 are both disposed on the angle bisector of the tensile-resistant plate body 128; the second guide block 131 includes a guide body 132, and a first guide end 133 and a second guide end 134 located at both ends of the guide body 132, the first guide end 133 being slidably connected to the first radial track 126 and axially limited by the fixed plate body 124, that is, the second guide block 131 cannot detach from the first radial track 126 in the direction of the tensile-resistant plate 122; the guide body 132 is connected to the limiting hole 129, the second guide end 134 is slidably connected to the telescopic control plate 123, the first guide block 127 is slidably connected to the second radial guide rail, and the first guide block 127 is axially limited by the tensile-resistant plate 122. The first guide block 127 cannot detach from the second radial track 130 in the direction of the fixed plate 121. Specifically, the first guide block 127 and the second guide block 131 jointly limit the axial movement of the tensile plate 122, preventing it from moving axially and allowing it to move only radially. That is, each tensile plate 122 can only extend and retract along the angle bisector of the tensile plate body 128. The connection between the first guide end 133 and the first radial track 126 ensures the stability of the tensile plate 122 in the radial direction. The connection between the second guide end 134 and the telescopic control plate 123 allows the telescopic control plate 123 to drive the tensile plate 122 to extend and retract radially. Through the above settings, when the telescopic control plate 123 rotates through the pivot 13, the sliding connection of the second guide end 134 allows the tensile plate 122 to extend or retract radially relative to the side circumferential surface 112, flexibly adjusting the extension and retraction state of the tensile plate 122 to adapt to different engineering requirements and soil conditions.

[0054] Please refer to the following: Figures 7 to 9 and Figure 12In some embodiments, the telescopic control plate is fixedly connected to the rotating shaft 13 via a connecting hole 138. The telescopic control plate 123 is provided with several arc-shaped tracks 135. The second guide end 134 is slidably connected to the arc-shaped track 135. The arc-shaped track 135 is used to allow the second guide block 131 to slide along the first radial track 126. The second guide block 131 pushes the tension plate 122 to slide along the first radial track 126. The axis of the first radial track 126 passes through the axis of the pile body 11, meaning the second guide block 131 pushes the tension plate 122 to move radially along the pile body 11, thus enabling several tension plates 122 to move radially along the pile body 11, converting the axial movement of the rotating shaft 13 into radial reciprocating linear motion of the tension plates 122. Each track 135 has a first end 136 and a second end 137. When the second guide block 131 is located at the first end 136, the tension plate 122 is in a retracted state; when the second guide block 131 is located at the second end 137, the tension plate 122 is in a state of extending beyond the side circumferential surface 112. Specifically, by controlling the position of the second guide block 131 on the arc-shaped track 135, the extension and retraction state of the tension plate 122 can be adjusted. When the second guide block 131 is located at the first end 136, the tension plate 122 is fully retracted, thereby reducing the footprint of the tension pile 10. When the second guide block 131 is located at the second end 137, the tension plate 122 is fully extended beyond the side circumferential surface 112, increasing the contact area with the soil, thereby improving the bearing capacity of the tension pile 10.

[0055] Please see Figure 12In some embodiments, on the expansion control plate 123 of the tension pile 10, the distance between the center of several arc-shaped tracks 135 and the center of the expansion control plate 123 gradually decreases along the direction from the second end 137 of the track to the first end 136 of the track; specifically, from the second end 137 of the track to the first end 136 of the track, the distance between the center of the arc-shaped track 135 and the center of the expansion control plate 123 decreases. This design allows each tension plate 122 to extend evenly from the side circumferential surface 112 when it extends out of the side circumferential surface 112, that is, the distance by which each tension plate 122 extends out of the side circumferential surface 112 is equal, so that the tension plate 122 contacts the soil evenly, thereby... The force distribution is more uniform, enhancing the stability and bearing capacity of the tension pile 10. With this layout, the axial movement of the rotating shaft 13 can be converted into the radial reciprocating linear movement of the second guide block 131 through the arc track 135, thereby driving the tension plate 122 to move radially reciprocatingly. That is, by setting the arc track 135 and setting the distance between the arc track 135 and the center of the telescopic control plate 123 to decrease from the second end 137 to the first end 136 of the track, the second guide block 131 is slidably connected in the arc track 135, thus realizing the conversion of the axial movement of the rotating shaft 13 into the radial reciprocating linear movement of the tension plate 122.

[0056] Please refer to the following: Figures 6 to 9In some embodiments, the plurality of tensile-resistant plates 122 include a plurality of first tensile-resistant plates 139 and a plurality of second tensile-resistant plates 140, which are distributed axially. The first tensile-resistant plates 139 and the second tensile-resistant plates 140 cannot leave their respective working ranges; that is, the first tensile-resistant plates 139 and the second tensile-resistant plates 140 cannot undergo any displacement other than radial expansion and contraction. The first tensile-resistant plates 139 are evenly spaced along the circumferential direction, and the second tensile-resistant plates 140 are evenly spaced along the circumferential direction. Furthermore, the first tensile-resistant plates 139 and the second tensile-resistant plates 140 are staggered along the circumferential direction, and the second tensile-resistant plates 140 are staggered along the circumferential direction. Specifically, the first tensile-resistant plates 139 and the second tensile-resistant plates 140 are staggered along the circumferential direction. Two tension plates 140 are axially distributed on the tension pile 10. The first tension plates 139 are evenly spaced along the circumferential direction to ensure an appropriate spacing between them. Similarly, the second tension plates 140 are also evenly spaced along the circumferential direction to maintain an appropriate spacing between them. This arrangement increases the number of tension plates 122, which is beneficial to enhancing the stability and bearing capacity of the tension pile 10. In addition, to further enhance the stability and bearing capacity of the tension pile 10, the first tension plates 139 and the second tension plates 140 are staggered along the circumferential direction. That is, the first tension plates 139 and the second tension plates 140 are not aligned on the same circumferential line, but are staggered. This staggered arrangement can increase the contact area between the tension plates 122 and the soil, thereby improving the stability and tensile strength of the tension pile 10.

[0057] Please refer to the following: Figures 2 to 3 In some embodiments, a plurality of first tension plates 139 and a plurality of second tension plates 140 are stacked along the axial direction; specifically, the first tension plates 139 and the second tension plates 140 are arranged in a stacked manner along the axial direction of the tension pile 10; that is, they are stacked sequentially in a direction perpendicular to the axial direction of the tension pile 10; through such a stacking arrangement, the contact area between the tension plates 122 and the soil can be increased, thereby improving the stability and bearing capacity of the tension pile 10; in addition, the stacking arrangement can also effectively utilize the space of the tension pile 10 and accommodate a greater number of tension plates 122 within a limited space.

[0058] Please continue to refer to the following: Figures 2 to 3In some embodiments, the tension pile 10 is arranged circumferentially, with each first tension plate 139 located between two adjacent second tension plates 140, and each second tension plate 140 located between two adjacent first tension plates 139. Specifically, each first tension plate 139 is arranged between two adjacent second tension plates 140, and they are evenly distributed circumferentially. That is, there is no gap or overlap between the first tension plate 139 and the adjacent second tension plate 140 on the circumference, the radial edge of the first tension plate 139 does not overlap with the second radial track 130 of the second tension plate 140, and the radial edge of the second tension plate 140 does not overlap with the second radial track 130 of the first tension plate 139. This arrangement ensures the uniformity of the tension pile 10 in the circumferential direction, and there is no interference between the radial expansion and contraction of the first tension plate 139 and the second tension plate 140, providing better stability and bearing capacity.

[0059] In some specific embodiments, two states of the pull-out pile 10 were compared to test and verify the bearing capacity of the pull-out plate 122 when it was fully contracted and fully extended. The test steps and results are as follows: Step 1: The pull-out pile 10 with the pull-out plate 122 in the contracted state was buried in saturated sand with a compaction degree of 0.75, with the end of the shaft 13 facing away from the pull-out plate 122 exposed; Step 2: The pull-out pile 10 was pulled out of the soil using a tensile testing machine, and the maximum pull-out force was recorded as N1; Step 3: Step 1 was repeated; Step 4: Rotation The rotating shaft 13 drives the telescopic control plate 123 to rotate, and the second guide block 131 slides within the first radial track 126 and the arc track 135, causing the tensile plate 122 to extend radially out of the pile body 11 under the cooperation of the first guide block 127 and the first radial track 126; Step 5: Use a tensile testing machine to pull the tensile pile 10 out of the soil and record the maximum pull-out force as N2; Step 6: Calculate that the maximum pull-out force N2 of the tensile pile 10 in the extended state is approximately 5.58 times that of the maximum pull-out force N1 of the tensile pile 10 in the contracted state. Therefore, it can be seen that the tensile pile 10 in this application, compared with the prior art, can effectively improve the bearing capacity of the tensile pile 10 at a low cost.

[0060] Please see Figure 13 The second embodiment of this application also provides a construction method, which is based on the anti-tension pile provided in the first embodiment of this application. Specifically, the anti-tension pile includes:

[0061] Step S10: Move the anti-tension pile to the designated pile driving point, and drive several anti-tension plates to retract inward relative to the side circumferential surface by rotating the shaft;

[0062] Specifically, when carrying out the construction work on the anti-uplift pile, the anti-uplift pile first needs to be moved to the designated pile driving point, and one end of the embedded section is aligned with the pile driving position. By rotating the shaft, the shaft is rotated, and the shaft drives several anti-uplift plates to retract relative to the side circumference, thereby protecting the structure of the anti-uplift mechanism and reducing the resistance to driving the anti-uplift pile.

[0063] Step S20: Apply pressure to the anti-pull pile to sink the embedded section to a predetermined depth, wherein the end of the rotating shaft opposite to the anti-pull mechanism is exposed from the pile driving point;

[0064] Specifically, after aligning one end of the embedded section with the pile driving position (pile driving point), pressure is applied to the end of the rotating shaft away from the pull-out mechanism, including but not limited to static pressure, hammering, and vibration, so that the embedded section overcomes the soil resistance and sinks into the soil, exposing the end of the rotating shaft away from the pull-out mechanism to the surface of the pile driving point. After the pull-out pile has sunk to the designed depth, measuring tools are used to confirm whether the actual pile driving depth meets the requirements.

[0065] Step S30: By rotating the shaft, several of the tension plates extend out of the side circumference, thus completing the installation of the tension pile.

[0066] Specifically, after confirming that the actual pile driving depth meets the requirements, a torque device is used to rotate the end of the shaft away from the anti-pull-out mechanism (i.e., the end of the shaft that is away from the anti-pull-out mechanism and exposed on the surface of the pile driving point). The shaft rotates, and the shaft is connected to the telescopic control plate. The telescopic control plate and the shaft rotate simultaneously, and the position of the second guide block on the arc track changes. With the cooperation of the first radial guide rail, the first guide block and the second radial guide rail, the second guide block moves from the first end of the track to the second end of the track. When the second guide block is located at the second end of the track, the anti-pull-out plate is in a state of extending out of the side circumference, thus completing the installation of the anti-pull-out pile.

[0067] Step S40: When the pull-out pile is retrieved, the shaft is rotated in the opposite direction to drive several pull-out plates back into the side circumferential surface and pull out the pull-out pile.

[0068] Specifically, after the temporary pull-out pile is used, when it needs to be retrieved, a torque device is used to rotate the shaft away from the pull-out mechanism by reversing the rotation direction (opposite to the rotation direction in step S10). The shaft is connected to the telescopic control plate, and the telescopic control plate and the shaft rotate simultaneously. The position of the second guide block on the arc track changes. With the cooperation of the first radial guide rail, the first guide block and the second radial guide rail, the second guide block moves from the second end of the track to the first end of the track. When the second guide block is at the first end of the track, the pull-out plate is fully retracted, and then the pull-out pile is pulled out of the soil, completing the retrieval of the pull-out pile.

[0069] In summary, this application provides an anti-tension pile and its construction method. The anti-tension pile includes a pile body having an embedded section inserted into the ground and a side circumferential surface connected to the embedded section; an anti-tension mechanism disposed on the embedded section, the anti-tension mechanism including a plurality of anti-tension plates, all of which can extend and retract radially along the pile body; and a rotating shaft rotatably connected to the pile body, one end of which is connected to the anti-tension mechanism. The rotating shaft drives the anti-tension plates to extend and retract radially by rotation, so that the plurality of anti-tension plates extend or retract relative to the side circumferential surface. The tension pile includes a pile body, a tension mechanism, and a rotating shaft. The tension mechanism is equipped with several tension plates. One end of the rotating shaft is connected to the tension mechanism. Rotating the other end of the rotating shaft causes the shaft to rotate, which in turn causes the tension plates to extend or retract radially relative to the side surface. When the tension plates extend relative to the side surface, the contact area between the tension pile and the soil increases, thereby improving the load-bearing capacity of the tension pile. Furthermore, the diameter of the pile body can be reduced. While maintaining the load-bearing capacity, the length or diameter of the tension pile is reduced, thus reducing costs. When the tension pile needs to be retrieved, the tension plates are retracted relative to the side surface, making the tension pile easier to pull out and retrieve, further reducing costs.

[0070] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A type of anti-tension pile, characterized in that, include: A pile body having an embedded section for insertion into the ground and a side circumferential surface connected to the embedded section; A pull-out resisting mechanism is provided on the embedded section, and the pull-out resisting mechanism includes a plurality of pull-out resisting plates, all of which can extend and retract radially along the pile body; A rotating shaft is rotatably connected to the pile body, and one end of the rotating shaft is connected to the pull-out mechanism. The rotating shaft drives the pull-out plates to extend or retract radially by rotating, so that a plurality of pull-out plates extend or retract relative to the side circumferential surface. The end of the rotating shaft that is away from the pull-out mechanism extends out of the pile body; The pull-out resistance mechanism further includes a fixed plate and a telescopic control plate. The fixed plate is fixedly connected to the embedded section. A plurality of pull-out resistance plates are disposed between the fixed plate and the telescopic control plate. The fixed plate cooperates with the telescopic control plate to axially limit and radially guide the pull-out resistance plates. The rotating shaft passes through the fixed plate and is fixedly connected to the telescopic control plate. The rotating shaft drives the telescopic control plate to rotate synchronously, so that the telescopic control plate drives a plurality of the anti-pull plates to perform radial extension and retraction, so that the plurality of anti-pull plates extend or retract relative to the side circumferential surface. The fixing plate is provided with a fixing plate body, a circular through hole, a plurality of first radial tracks and a plurality of first guide blocks disposed on the fixing plate body; the circular through hole is disposed at the center of the fixing plate body, the rotating shaft passes through the circular through hole and can rotate relative to the circular through hole; A plurality of first guide blocks are respectively disposed at one end of a plurality of first radial tracks away from the center of the fixed plate body. The first guide blocks are radially slidably connected to the pull-out plate. The end of the first guide block away from the fixed plate body axially limits the pull-out plate. Each of the aforementioned tensile plates includes: a tensile plate body, a limiting hole, and a second radial track and a second guide block disposed on the angle bisector of the tensile plate body; the second guide block is provided with a guide body, and a first guide end and a second guide end located at both ends of the guide body, the first guide end being slidably connected in the first radial track and axially limited by the fixed plate body, the guide body being connected to the limiting hole, and the second guide end being slidably connected to the telescopic control plate; The telescopic control plate is provided with several arc-shaped tracks, and the second guide end is slidably connected to the arc-shaped track. The arc-shaped track is used to drive the second guide block to slide along the first radial track. Each of the aforementioned arc-shaped tracks has a first end and a second end. When the second guide block is located at the first end of the track, the anti-pull plate is in a retracted state. When the second guide block is located at the second end of the track, the anti-pull plate is in a state of extending out of the side circumferential surface; The distance between the center of the several arc-shaped tracks and the center of the telescopic control plate decreases from the second end of the track to the first end of the track.

2. The anti-tension pile according to claim 1, characterized in that, The tensile test plates include a plurality of first tensile test plates and a plurality of second tensile test plates, which are distributed along the axial direction. The plurality of first tensile test plates are evenly spaced apart along the circumferential direction, and the plurality of second tensile test plates are evenly spaced apart along the circumferential direction. The first tensile test plates and the second tensile test plates are staggered along the circumferential direction.

3. The anti-tension pile according to claim 2, characterized in that, Several first tensile plates and several second tensile plates are stacked along the axial direction.

4. The anti-tension pile according to claim 2, characterized in that, Along the circumferential direction, several of the first tensile plates are located between two adjacent second tensile plates.

5. A construction method for an anti-tension pile based on any one of claims 1-4, characterized in that, include: Move the anti-tension pile to the designated pile driving point, and drive several anti-tension plates to retract inward relative to the side circumferential surface by rotating the shaft; Pressure is applied to the anti-pull pile to drive the embedded section to a predetermined depth, wherein the end of the rotating shaft opposite to the anti-pull mechanism is exposed from the pile driving point; By rotating the shaft, several of the tension plates extend out of the side circumference, thus completing the installation of the tension pile; When the pull-out pile is retrieved, the shaft is rotated in the opposite direction, causing several pull-out plates to retract into the side circumferential surface and the pull-out pile to be pulled out.

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