Vector pile shoe with deviation rectifying and pile sinking resistance adjusting functions

Abstract

The invention discloses a vector pile shoe with deviation rectifying and pile sinking resistance adjusting functions. The vector pile shoe comprises a pile shoe body, a vector shovel blade system, an adjusting device, a control system, a perpendicularity sensor and a resistance sensor. The vector pile shoe with the deviation rectifying and pile sinking resistance adjusting functions has the following beneficial effects that 1, the active deviation rectifying function is achieved, deviation rectifying can be achieved in the pile sinking process by adjusting the direction of the shovel blade, and the problem that the deviation rectifying difficulty of a traditional pile shoe is large is solved; 2, the pile sinking resistance is minimized: the opening angle of the shovel blade can be adjusted according to the real-time change of the stratum soil texture, the dynamic balance of the soil squeezing resistance and the soil plug resistance is realized, the pile sinking resistance is reduced, and the energy consumption is reduced; and 3, the adaptability is high, specifically, the device can adapt to different soil conditions, especially for complex stratums, and the stability and efficiency in the pile sinking process can be improved.

Description

Technical Field

[0001] This invention belongs to the field of precast pile driving technology in civil engineering, and specifically relates to a vector pile shoe with functions of correction and pile driving resistance adjustment. Background Technology

[0002] In the traditional precast pipe pile driving process, the complex and variable soil conditions often lead to pile deviation, making correction difficult. Furthermore, existing fixed pile shoes cannot adjust the soil displacement / receiving ratio in real time according to soil conditions during pile driving, resulting in high driving resistance and impacting construction efficiency. Current technology lacks a solution that can actively correct deviation and adjust driving resistance. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a vector pile shoe with functions of correction and pile driving resistance adjustment.

[0004] To achieve the above objectives, the present invention provides a vector pile shoe with functions of correction and pile driving resistance adjustment, comprising a pile shoe body, a vector blade system, an adjustment device, a control system, a verticality sensor, and a resistance sensor. The pile shoe body is a hollow tubular structure fitted onto the bottom of a precast pipe pile. The verticality sensor is installed inside the pile shoe body near the center of the pile axis. The vector blade system consists of multiple blades arranged in a ring at the lower end of the pile shoe body, with one edge of each blade hinged to the lower end edge of the pile shoe body via a pivot. The adjustment device consists of multiple hydraulic or electric actuators, with the output end of each actuator hinged to the outer surface of a blade, and the outer end of the cylinder hinged to the lower end edge of the pile shoe body near the corresponding blade. The resistance sensor is installed at the output end of the hydraulic or electric actuator to monitor in real time the reaction force or resistance differences in different directions borne by each actuator. The control system is electrically connected to the verticality sensor, the resistance sensor, and the adjustment device.

[0005] The control system uses a Siemens S7-1200 module.

[0006] The verticality sensor used is the Murata SCA100T-D02 sensor.

[0007] The resistance sensor uses a TE Connectivity FX1901 / FX29 sensor.

[0008] Both ends of the hydraulic or electric push rod are hinged to the lower port edge of the blade and the pile shoe body via connecting hinges.

[0009] The vector pile shoe with correction and pile driving resistance adjustment functions provided by this invention has the following beneficial effects:

[0010] 1. Active correction function: By adjusting the direction of the blade, it can correct deviation during the pile driving process, overcoming the problem of the difficulty of correction in traditional pile shoes.

[0011] 2. Minimize pile driving resistance: The opening angle of the shovel blade can be adjusted according to the real-time changes in the soil conditions, achieving a dynamic balance between soil displacement resistance and soil plugging resistance, reducing pile driving resistance and energy consumption.

[0012] 3. High adaptability: This device can adapt to different soil conditions, especially for complex strata, and can improve the stability and efficiency of the pile driving process. Attached Figure Description

[0013] Figure 1 A top view of a vector pile shoe with correction and pile driving resistance adjustment functions provided by the present invention.

[0014] Figure 2 A three-dimensional diagram of a vector pile shoe with correction and pile driving resistance adjustment functions provided by the present invention.

[0015] Figure 3 This is a three-dimensional view of a partial structure of a vector pile shoe with correction and pile driving resistance adjustment functions provided by the present invention. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0017] like Figures 1-3As shown, the vector pile shoe with correction and pile driving resistance adjustment functions provided by the present invention includes a pile shoe body 1, a vector blade system, an adjustment device, a control system 5, a verticality sensor, and a resistance sensor. The pile shoe body 1 is a hollow tubular structure that fits around the bottom of the precast pipe pile. The verticality sensor is installed inside the pile shoe body 1 near the center of the pile axis to avoid false inclination caused by eccentric installation. The vector blade system consists of multiple blades 2 arranged in a ring at the lower end of the pile shoe body 1. One edge of each blade 2 is hinged to the lower end edge of the pile shoe body 1 via a pivot 3, allowing the blades 2 to open and close around the pivot 3. The adjustment device consists of multiple hydraulic or electric push rods 4, with the output end of each hydraulic or electric push rod 4 hinged to a blade. On the outer surface of 2, the outer end of the cylinder is hinged to the lower port edge of the pile shoe body 1 near the corresponding blade 2; the resistance sensor is installed at the output end of the hydraulic or electric push rod 4 to monitor in real time the reaction force or resistance difference in different directions borne by each hydraulic or electric push rod 4; the control system 5 is electrically connected to the verticality sensor, the resistance sensor and the adjustment device respectively, to obtain the inclination angle and soil resistance data of the precast pipe pile in real time through the verticality sensor and the resistance sensor, and then calculate the optimal opening angle of the blade 2 based on the above data, and control the adjustment device to adjust the opening angle of the blade 1, thereby changing the interaction force between the pile shoe body 1 and the soil layer, so as to ensure the minimum verticality and pile driving resistance of the precast pipe pile during the pile driving process.

[0018] The control system 5 uses a Siemens S7-1200 module.

[0019] The verticality sensor used is the Murata SCA100T-D02 sensor.

[0020] The resistance sensor uses a TE Connectivity FX1901 / FX29 sensor.

[0021] Both ends of the hydraulic or electric push rod 4 are hinged to the lower port edge of the blade 2 and the pile shoe body 1 via connecting hinges 6.

[0022] The working principle of the vector pile shoe with correction and pile driving resistance adjustment functions provided by this invention is described below:

[0023] Before pile driving begins, the control system 5 controls each blade 2 to symmetrically unfold at the same opening angle θ. The purpose is threefold: (1) to reduce the initial end resistance and reduce the strong soil squeezing effect; (2) to form a controllable soil-carrying channel and avoid the difficulty of initial sinking of the "closed pile shoe"; and (3) to provide adjustable degrees of freedom for subsequent correction. The opening angle refers to the angle of rotation of the blade 2 relative to the axis normal plane of the precast pipe pile. In engineering, the opening angle is usually taken as follows: for soft soil, θ≈10°-15°, and for medium-dense sand / silt, θ≈5°-10°.

[0024] The pile driving construction begins. During the pile driving process, under the control of the control system 5, this vector pile shoe will acquire the tilt angle of the precast pipe pile and the soil resistance data in real time through the verticality sensor and the resistance sensor. When the pile body deviates, the control system 5 will control the action of each hydraulic or electric push rod 4 according to the deviance angle, controlling the blade 2 on the corresponding side of the deviance direction to reduce the opening angle, while the blade 2 on the other side will increase the opening angle accordingly. For example, if the verticality sensor detects that the pile body is tilted to the "east" during the precast pipe pile penetration process, the control system 5 will control the corresponding blade 2 to reduce the opening angle θ or partially close through the adjustment device located on the east side. The purpose is to reduce soil intake and increase end resistance. The blade 2 on the west side will increase the opening angle θ. The purpose is to increase soil intake and reduce resistance. The blade 2 on the north or south side will make fine adjustments according to the deviance angle provided by the verticality sensor to assist in adjusting the pile body tilt, so that the force direction of the pile head changes, thereby correcting the verticality of the pile body. Furthermore, the control system 5 will synchronously adjust the opening angle θ of multiple blades 2 according to real-time changes in the soil conditions, dynamically adjusting the ratio of soil squeezing resistance and soil plugging resistance, thereby minimizing pile driving resistance and improving construction efficiency. After the pile is in place, all blades 2 will be closed to their maximum angle to reduce post-construction settlement.

Claims

1. A vector pile shoe with functions of correction and pile driving resistance adjustment, characterized in that: The vector pile shoe with correction and pile driving resistance adjustment functions includes a pile shoe body (1), a vector blade system, an adjustment device, a control system (5), a verticality sensor, and a resistance sensor. The pile shoe body (1) is a hollow tubular structure that fits around the bottom of the precast pipe pile. The verticality sensor is installed inside the pile shoe body (1) near the center of the pile axis. The vector blade system consists of multiple blades (2) arranged in a ring at the lower port of the pile shoe body (1). One edge of each blade (2) is hinged to the lower port edge of the pile shoe body (1) via a pivot (3). The adjustment device consists of multiple hydraulic or electric push rods (4). The output end of each hydraulic or electric push rod (4) is hinged to the outer surface of a blade (2), and the outer end of the cylinder is hinged to the lower port edge of the pile shoe body (1) near the corresponding blade (2). The resistance sensor is installed at the output end of the hydraulic or electric push rod (4). The control system (5) is electrically connected to the verticality sensor, the resistance sensor, and the adjustment device.

2. The vector pile shoe with correction and pile driving resistance adjustment functions according to claim 1, characterized in that: The control system (5) adopts a Siemens S7-1200 module.

3. The vector pile shoe with correction and pile driving resistance adjustment functions according to claim 1, characterized in that: The verticality sensor used is the Murata SCA100T-D02 sensor.

4. The vector pile shoe with correction and pile driving resistance adjustment functions according to claim 1, characterized in that: The resistance sensor uses a TE Connectivity FX1901 / FX29 sensor.

5. The vector pile shoe with correction and pile driving resistance adjustment functions according to claim 1, characterized in that: Both ends of the hydraulic or electric push rod (4) are hinged to the lower port edge of the blade (2) and the pile shoe body (1) via connecting hinges (6).

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