Suction pile with drainage function

Abstract

The utility model discloses a suction pile with a drainage function, which belongs to the technical field of pile foundation engineering and comprises a pile foundation body. The sleeve frame is arranged on the pile foundation body in a sleeving mode and provided with a plurality of insertion pipes in the perimeter direction of the pile foundation body, the top ends of the insertion pipes are closed, the bottom ends of the insertion pipes are open, drainage plates are placed in the insertion pipes, and a plurality of water guide grooves are formed in the two side faces of each drainage plate; and the pile foundation body is detachably connected with the sleeve frame through the locking assembly. The sleeve frame, the insertion pipe and the drainage plate are driven to sink together during sinking construction of the pile foundation body, then the drainage plate is left in the soft soil foundation, and the drainage plate leads out water in soft soil through the water guide groove, so that ultra-static pore water pressure generated by circulating horizontal displacement of the suction pile is dissipated, the ultra-static pore pressure in the soft soil is reduced, the displacement of the pile body is reduced, and the construction efficiency is improved. Therefore, the consolidation rate of the foundation is accelerated, and the soil strength of the foundation is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pile foundation engineering technical field, especially relate to a suction pile with drainage function. BACKGROUND

[0002] Suction pile is a kind of pile foundation technology by using soil suction and friction to enhance the bearing capacity of foundation, which has been widely used in offshore wind power, offshore drilling platform and other marine engineering.

[0003] In actual engineering, many suction pile foundations are located in marine soft soil, and these marine soft soil has high water content, low strength and poor permeability, and the suction pile foundation is subjected to long-term horizontal cyclic load, which will form disturbance to the soil around the pile, cause the increase of excess static pore pressure in soft soil and the displacement of pile body, and other adverse consequences, which need to be solved urgently. CONTENT OF UTILITY MODEL

[0004] To solve the technical problems that the suction pile foundation is subjected to long-term horizontal cyclic load, which will form disturbance to the soil around the pile, cause the increase of excess static pore pressure in soft soil and the displacement of pile body mentioned in the background, a suction pile with drainage function is provided to solve the above problems.

[0005] To achieve the above purpose, the specific technical scheme of the suction pile with drainage function of the utility model is as follows:

[0006] A suction pile with drainage function, comprising:

[0007] A pile base body;

[0008] A sleeve frame is sleeved on the pile base body and is provided with a plurality of insertion pipes along the circumferential direction of the pile base body, the top end of the insertion pipe is closed and the bottom end is open, a drainage plate is placed inside the insertion pipe, and a plurality of water guide grooves are formed on the two side surfaces of the drainage plate;

[0009] A locking assembly, the pile base body and the sleeve frame are detachably connected through the locking assembly.

[0010] Furthermore, the locking assembly includes a pin, a first fixing ring, and a second fixing ring. The pile body is provided with a connecting plate. The first fixing ring and the second fixing ring are respectively fixedly connected to the front end and the rear end of the connecting plate. The connecting plate has a first connecting hole. The sleeve has a second connecting hole at a position corresponding to the first connecting hole. The first connecting hole and the second connecting hole are connected. The pin is slidably engaged between the first fixing ring and the second fixing ring and is inserted into the first connecting hole and the second connecting hole. The pin is coaxially fixedly connected to a limiting ring and fitted with a compression spring. The limiting ring abuts against the limiting ring between the first fixing ring and the second fixing ring. One end of the compression spring is fixedly connected to the limiting ring and the other end is fixedly connected to the second fixing ring. The compression spring is used to continuously provide a thrust to the limiting ring to move closer to the first fixing ring. The connecting plate is provided with a fixed pulley. A pull rope is provided at the end of the pin away from the sleeve. The pull rope is wound around the fixed pulley and extends from the top of the pile body.

[0011] Furthermore, a hook is provided at the top of the frame.

[0012] Furthermore, the interval between adjacent cannulas is controlled at 1-2m.

[0013] Furthermore, a counterweight is fixedly installed at the bottom of the drainage board.

[0014] Furthermore, the counterweight is cone-shaped.

[0015] The suction pile with drainage function of this utility model has the following advantages: This utility model sets a detachable sleeve and insert on the outer surface of the pile body. The insert has a drainage board inside and a counterweight is connected to the bottom of the drainage board. So that the drainage board, insert, and counterweight are inserted into the marine soft soil together during the sinking of the pile body. After sinking to the designated position, the pin on the connecting plate of the pile body is pulled by the pull rope to separate the sleeve from the pile body. Then, the sleeve and insert are pulled out by the hook on the sleeve. Under the action of its own weight and the pulling force of the counterweight, the drainage board remains in the marine soft soil foundation. It draws out the water in the soft soil through the water guide channel to dissipate the excess pore water pressure generated by the cyclic horizontal displacement of the suction pile, reduce the excess pore pressure in the soft soil, reduce the pile displacement, thereby accelerating the consolidation rate of the foundation and improving the strength of the foundation soil. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the suction pile with drainage function of this utility model;

[0017] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0018] Figure 3 This is a bottom view of the sleeve and insertion tube of this utility model;

[0019] Figure 4 for Figure 3 A magnified view of part B in the diagram.

[0020] The markings in the diagram are as follows: 1. Pile base; 2. Sleeve; 3. Locking assembly; 301. Pin; 302. First fixing ring; 303. Second fixing ring; 304. Connecting plate; 305. First connecting hole; 306. Second connecting hole; 307. Limiting ring; 308. Compression spring; 309. Fixed pulley; 310. Pull rope; 4. Insert pipe; 5. Drainage board; 6. Water guide channel; 7. Hook; 8. Counterweight. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0023] The following is a reference to the appendix. Figure 1 To be continued Figure 4 This invention describes a suction pile with drainage function.

[0024] Reference Figures 1 to 4The suction pile with drainage function in this utility model includes a pile base 1, a sleeve 2, and a locking assembly 3. The sleeve 2 is fitted onto the pile base 1 and has several insertion tubes 4 arranged along the circumference of the pile base 1. The top of the insertion tubes 4 is closed and the bottom is open. A drainage plate 5 is placed inside the insertion tubes 4. Several water guide grooves 6 are opened on both sides of the drainage plate 5. The pile base 1 and the sleeve 2 are detachably connected by the locking assembly 3. The sleeve 2 is fitted onto the pile base 1 by the locking assembly 3 so that the pile base... The pile body 1, sleeve 2, insertion pipe 4, and drainage board 5 can be inserted together into the marine soft soil. After sinking to the designated position, the locking component 3 is unlocked to separate the pile body 1 from the sleeve 2. Subsequently, the sleeve 2 and insertion pipe 4 are pulled out, leaving the drainage board 5 in the soft soil. The drainage board 5 draws out the water in the soft soil through the water guide channel 6 to dissipate the excess pore water pressure generated by the cyclic horizontal displacement of the suction pile, reduce the excess pore pressure in the soft soil, reduce the pile displacement, thereby accelerating the consolidation rate of the foundation and improving the strength of the foundation soil.

[0025] Specifically, the locking assembly 3 includes a pin 301, a first fixing ring 302, and a second fixing ring 303. The pile body 1 is provided with a connecting plate 304. The first fixing ring 302 and the second fixing ring 303 are respectively fixedly connected to the front end and the rear end of the connecting plate 304. The connecting plate 304 has a first connecting hole 305. The sleeve 2 has a second connecting hole 306 at a position corresponding to the first connecting hole 305. The first connecting hole 305 communicates with the second connecting hole 306. The pin 301 is slidably engaged with the first... The fixing ring 302 and the second fixing ring 303 are inserted into the first connecting hole 305 and the second connecting hole 306. The pin 301 is coaxially fixedly connected to the limiting ring 307 and fitted with a compression spring 308. The limiting ring 307 abuts and is limited between the first fixing ring 302 and the second fixing ring 303. One end of the compression spring 308 is fixedly connected to the limiting ring 307 and the other end is fixedly connected to the second fixing ring 303. The compression spring 308 is used to continuously provide the limiting ring 307 with a proximity to the first fixing ring 302. The moving thrust is provided by a fixed pulley 309 on the connecting plate 304, and a pull rope 310 is provided at the end of the pin 301 away from the sleeve 2. The pull rope 310 is wound around the fixed pulley 309 and extends from the top of the pile body 1. When the pile body 1 is fixed to the sleeve 2 by the locking assembly 3, the compression spring 308 is in a compressed state to continuously provide thrust to the limiting ring 307, so that the limiting ring 307 continuously drives the pin 301 to move closer to the first connecting hole 305 and the second connecting hole 306, thereby maintaining the pin. In the connected state, the pile base 1 and the sleeve 2 are fixed; when the pile base 1 and the sleeve 2 are separated by the locking assembly 3, the pull rope 310 is pulled by the fixed pulley 309, so that the pin 301 is subjected to a horizontal pulling force away from the sleeve 2 and disengages from the first connecting hole 305 and the second connecting hole 306, thereby separating the pile base 1 and the sleeve 2. The pin 301 is then abutted and limited between the first fixing ring 302 and the second fixing ring 303 by the limiting ring 307 to prevent the pin 301 from coming out of the connecting plate 304.

[0026] Preferably, the top of the sleeve 2 is provided with a hook 7 so that after the pile body 1 is separated from the sleeve 2, the sleeve 2 and the insertion tube 4 can be taken out by the hook 7.

[0027] Preferably, the spacing between adjacent insertion tubes 4 is controlled at 1-2m to suit the construction conditions of marine soft soil foundation.

[0028] Preferably, a counterweight 8 is fixedly installed at the bottom of the drainage board 5. By setting the counterweight 8, the drainage board 5 can remain in the marine soft soil foundation under its own weight and the pulling force of the counterweight 8, thereby enhancing the stability of the drainage board 5 fixed to the soft soil.

[0029] Furthermore, the counterweight 8 is cone-shaped, which facilitates the insertion of the drainage pipe into the soft soil.

[0030] The working principle of this suction pile with drainage function is as follows: First, based on the dimensions of the pile base 1, the dimensions of the sleeve 2, the insertion pipe 4, the drainage board 5, and the counterweight 8 are determined. The pile base 1 is fixed to the sleeve 2 using the locking assembly 3, and the plastic drainage board 5 is placed inside the insertion pipe 4. The counterweight 8 is fixed at the bottom of the drainage board 5. During the sinking construction of the pile base 1, the sleeve 2, the insertion pipe 4, the drainage board 5, and the counterweight 8 sink together. After sinking to the designated position, the pile base 1 is separated from the sleeve 2 using the locking assembly 3. Then, the sleeve 2 and the insertion pipe 4 are lifted off by a crane using the hook 7 on the sleeve 2, so that the drainage board 5 and the counterweight 8 remain in the soft soil foundation, completing the sinking construction of the suction pile. The drainage board 5 draws out the water in the soft soil through the water guide channel 6 to dissipate the excess pore water pressure generated by the cyclic horizontal displacement of the suction pile, reduce the excess pore pressure in the soft soil, reduce the pile displacement, thereby accelerating the consolidation rate of the foundation and improving the strength of the foundation soil.

[0031] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A suction pile with drainage function, characterized in that, include Pile basic body; The frame is fitted onto the pile foundation and has several inserted tubes along the perimeter of the pile foundation. The top of the inserted tube is closed and the bottom is open. A drainage board is placed inside the inserted tube, and several water guide grooves are opened on both sides of the drainage board. The locking assembly allows for a detachable connection between the pile body and the sleeve.

2. The suction pile with drainage function according to claim 1, characterized in that, The locking assembly includes a pin, a first fixing ring, and a second fixing ring. The pile body is provided with a connecting plate. The first fixing ring and the second fixing ring are respectively fixedly connected to the front end and the rear end of the connecting plate. The connecting plate has a first connecting hole. The sleeve has a second connecting hole at a position corresponding to the first connecting hole. The first connecting hole and the second connecting hole are connected. The pin is slidably engaged between the first fixing ring and the second fixing ring and is inserted into the first connecting hole and the second connecting hole. The pin is coaxially fixedly connected to a limit ring and fitted with a compression spring. The limit ring abuts against the limit ring between the first fixing ring and the second fixing ring. One end of the compression spring is fixedly connected to the limit ring and the other end is fixedly connected to the second fixing ring. The compression spring is used to continuously provide a thrust to the limit ring to move closer to the first fixing ring. The connecting plate is provided with a fixed pulley. A pull rope is provided at the end of the pin away from the sleeve. The pull rope is wound around the fixed pulley and extends from the top of the pile body.

3. The suction pile with drainage function according to claim 1, characterized in that, The top of the frame is equipped with a hook.

4. The suction pile with drainage function according to claim 1, characterized in that, The interval between adjacent cannulas should be controlled at 1-2m.

5. The suction pile with drainage function according to claim 1, characterized in that, A counterweight is fixedly installed at the bottom of the drainage board.

6. The suction pile with drainage function according to claim 5, characterized in that, The counterweight is cone-shaped.

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