High-slenderness-ratio pile foundation construction deviation rectifying device and method based on pile body posture self-adaption

Abstract

The invention discloses a large-slenderness-ratio pile foundation construction deviation rectifying device based on pile body posture self-adaption, and relates to the technical field of construction deviation rectifying, the large-slenderness-ratio pile foundation construction deviation rectifying device comprises a pile foundation bearing platform, a pile body and deviation rectifying assemblies, the deviation rectifying assemblies are used for automatically correcting the axial direction when the pile body deviates, and the multiple deviation rectifying assemblies are arranged, so that the deviation rectifying effect is good; the multiple deviation rectifying assemblies are distributed on the four sides of the pile body correspondingly. The inclination angle sensors are used for collecting inclination angle data of the pile body, when it is found that the pile body inclines, the inclination angle sensors automatically correspond to the correction assemblies on one side, and therefore the pile body is automatically corrected under the action of the hydraulic jacks, and when the numerical value of one set of pressure sensors is abnormally increased, automatic correction is carried out, and the working efficiency is improved. The pile body is kept vertical, and the problem that an existing pile body deflects due to the fact that the slenderness ratio is too large, the geological hardness is not uniform and confined water influences is solved.

Description

Technical Field

[0001] This invention relates to the field of construction deviation correction technology, specifically to a device and method for deviation correction of large slenderness ratio pile foundations based on pile posture self-adaptation. Background Technology

[0002] In areas with soft soil, high water levels, and complex geological conditions, such as the Hangzhou coastal plain, the construction of ultra-long and ultra-slender pile foundations with a slenderness ratio of ≥80 faces severe challenges. In traditional pile foundation construction, the pile body is prone to deflection due to factors such as uneven geology, disturbance from confined water, and vibration of construction machinery.

[0003] In existing technologies, excessively large slenderness ratios of the pile body lead to weak resistance to lateral displacement. Uneven geological conditions cause stress imbalance in the pile body, and disturbances from confined water further exacerbate the deviation of the pile body's posture. Traditional construction methods can only correct the deviation afterward, which is not only inefficient and prolongs the construction period, but also easily exacerbates the deviation because the pile body has already sunk into the soil. Once the deviation exceeds the specifications, it will directly reduce the bearing safety of the pile foundation and even cause settlement of the surrounding structure. The rework operations such as pile cutting and pile replacement caused by the deviation also significantly increase the project cost.

[0004] Therefore, we propose a correction device and method for large slenderness ratio pile foundation construction based on pile posture self-adaptation, in order to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a pile foundation construction correction device and method based on pile posture self-adaptation, in order to solve the problem of pile body deviation caused by excessive slenderness ratio, uneven geological hardness, and the influence of confined water in the existing piles mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pile foundation construction correction device based on adaptive pile posture with a large slenderness ratio, comprising a pile cap, a pile body, and correction components. The correction components are used to automatically correct the axial direction when the pile body deviates. Multiple correction components are provided, distributed on the four sides of the pile body. Multiple strain gauge modules are provided on the outer surfaces of the four sides of the pile body, and these strain gauge modules are used to monitor the stress of the pile body in real time to prevent correction damage. Bearing steel plates are fixedly connected to the outer surfaces of the four sides of the pile body. Each bearing steel plate has an outer... Inclination sensors are installed on all surfaces, and these sensors are used to detect the axial attitude of the pile body in real time. The correction assembly includes a hydraulic jack and a support truss. An adjusting wedge is fixedly connected to the top end of the hydraulic jack, and a fixed frame is fixedly connected to the top of the support truss. A fixed shaft is fixedly connected between the inner walls of the fixed frame, and a correction plate is rotatably fitted onto the outer surface of the fixed shaft. A semi-circular mounting groove is opened near the top end of the correction plate, and multiple pressure sensors are installed on the inner wall of the semi-circular mounting groove. These pressure sensors are used to sense the pressure changes generated by the pile body on the correction plate in real time.

[0007] Preferably, the top of the pile foundation cap is provided with a pile embedding hole, the main body of the pile is embedded in the pile embedding hole, the top of the pile foundation cap is fixedly connected to an integrated base plate, the correction component is fixedly installed on the top of the integrated base plate, and the top of the integrated base plate is fixedly installed with a grouting component.

[0008] Preferably, the bottom end of the correction plate is provided with a connecting groove, and a connecting shaft is fixedly connected between the inner walls of the connecting groove. An adjusting gravity roller is rotatably connected to the outer surface of the connecting shaft.

[0009] Preferably, one side of the outer surface of the adjusting block is inclined, and an anti-slip slope is provided on the inclined side. The top of the anti-slip slope is in contact with the outer surface of the adjusting gravity roller. Limiting side plates are fixedly connected to the outer surface of the supporting truss near both sides, and the limiting side plates are used to limit the vertical movement direction of the adjusting block.

[0010] Preferably, a return spring is provided on the inner bottom surface of the fixing frame. The top end of the return spring is fixedly connected to the bottom of the correction plate near the top end. The return spring is used to elastically support the correction plate so that the adjusting gravity roller remains in contact with the anti-slip slope.

[0011] Preferably, the grouting assembly includes a connecting pipe, which is located outside the main body of the pile, and the two ends of the connecting pipe are connected by hinges to form a ring.

[0012] Preferably, a positioning bracket is fixedly connected to the bottom of the connecting pipe near the four corners, and an installation base plate is fixedly connected to the bottom of each of the four positioning brackets. The four installation base plates are fixedly installed on the top of the integrated base plate. A liquid pump is installed on the top of the pile foundation cap, and a grouting pipe is fixedly connected to the output end of the liquid pump. The top end of the grouting pipe is fixedly inserted through the connecting pipe into its interior.

[0013] Preferably, the grouting assembly further includes an injection mechanism, and four injection mechanisms are provided. Each injection mechanism includes a connecting U-shaped pipe, both ends of which are fixedly connected to a connecting pipeline, and the bottom of the connecting U-shaped pipe is fixedly connected to a conveying pipeline.

[0014] Preferably, the bottom end of the conveying pipe is fixedly connected to a grouting double-ended pipe, the outer surface of the conveying pipe is provided with an electromagnetic valve, and the outer surfaces of both ends of the grouting double-ended pipe are fixedly connected with reinforcing rods, the top end of each reinforcing rod being fixedly installed at the bottom of the connecting pipe.

[0015] The method for correcting the deviation of pile foundations with large slenderness ratio based on pile attitude self-adaptation includes the following steps: S1. During the construction of the main body of the pile, the attitude of the main body of the pile is monitored in real time. When the deviation is detected, the correction action is automatically triggered. Before the main body of the pile is inserted into the pile hole, the zero point calibration is completed by the tilt sensor, the initial vertical reference of the main body of the pile is recorded, and the initial stress value of the main body of the pile is collected synchronously by the strain gauge module as the reference for the subsequent safety threshold. S2. The tilt angle data of the main body of the pile is collected by the tilt angle sensor. When the tilt of the main body of the pile is detected, the abnormal signal is sent to the external main control system. The corresponding correction component on one side is automatically adjusted to the correct position under the action of the hydraulic jack. If the pressure sensor value increases abnormally, it means that the main body of the pile is tilted to that side, so automatic correction is performed to keep the main body of the pile vertical. During the correction process, the strain gauge module monitors the stress of the main body of the pile. S3. When the tilt sensor detects that the main body of the pile body is tilted, the pressure sensor in the direction of the tilt will increase the pressure. By activating the hydraulic jack, it will push the adjusting block upward and the adjusting gravity roller upward. The correction plate will rotate around the fixed axis as the rotation center, thereby causing the correction plate to push the main body of the pile body to correct the tilt. S4. Connect the two ends of the U-shaped pipe with a hinge to form a loop around the outside of the pile body. When the pile body is tilted, a gap will appear between the pile body and the pile embedding hole. The control system will open the corresponding solenoid valve and start the liquid pump to pump the mud into the grouting double-ended pipe, thereby injecting the mud into the gap.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. During use, the tilt angle data of the main body of the pile are collected by the tilt angle sensor. When the tilt of the main body of the pile is detected, the corresponding correction component on one side is automatically adjusted. Under the action of the hydraulic jack, the main body of the pile is automatically corrected. When the value of one set of pressure sensors increases abnormally, the automatic correction is performed to keep the main body of the pile vertical. This solves the problem of pile body tilt caused by excessive slenderness ratio, uneven geological hardness, and the influence of pressurized water. During the correction process, the strain gauge module monitors the stress of the main body of the pile. When the stress is too high, it automatically adjusts to the small step lifting mode to avoid damage to the pile body. 2. During use, when the main body of the pile body is tilted and automatic attitude correction is performed, a gap will appear between the main body of the pile body and the pile embedding hole. By opening the corresponding solenoid valve at this point and starting the liquid pump, the mud is allowed to enter the connecting pipe through the grouting pipe, then enter the connecting U-shaped pipe with the solenoid valve opened, and then inject the mud into the gap through the grouting double-ended pipe. This can prevent the main body of the pile body from tilting again and improve the stability of the self-adaptive attitude correction of the main body of the pile body. 3. During use, when the tilt sensor detects that the main body of the pile is tilted, the pressure sensor in the direction of the tilt will increase the pressure. By activating the hydraulic jack, it pushes the adjusting block upward, and the adjusting block pushes the adjusting gravity roller upward. Then the correction plate will rotate around the fixed axis as the rotation center, so that the end of the correction plate with the pressure sensor installed pushes the main body of the pile, thereby completing the correction of the main body of the pile. Attached Figure Description

[0017] Figure 1 This is a first-view perspective perspective view of the large slenderness ratio pile foundation construction correction device based on pile body posture self-adaptation according to the present invention. Figure 2 This is a second-view perspective perspective view of the large slenderness ratio pile foundation construction correction device based on pile body attitude self-adaptation according to the present invention. Figure 3 This is a three-dimensional view of the pile cap portion of the large slenderness ratio pile foundation construction correction device based on pile body posture self-adaptation according to the present invention. Figure 4 This is a three-dimensional view of the grouting component of the large slenderness ratio pile foundation construction correction device based on pile posture self-adaptation of the present invention. Figure 5 This is a perspective view of the injection mechanism of the pile foundation construction correction device with large slenderness ratio based on pile posture self-adaptation according to the present invention. Figure 6 This is a perspective view of the correction component of the correction device for large slenderness ratio pile foundation construction based on pile body attitude self-adaptation according to the present invention. Figure 7This is a perspective view of another part of the correction component of the correction device for large slenderness ratio pile foundation construction based on pile body attitude self-adaptation according to the present invention. Figure 8 This is a three-dimensional view of the structure of the correction component of the correction device for large slenderness ratio pile foundation construction based on pile posture self-adaptation according to the present invention.

[0018] In the picture: 1. Pile cap; 2. Pile body; 3. Strain gauge module; 4. Correction assembly; 401. Hydraulic jack; 402. Adjusting ramp; 403. Support truss; 404. Limiting side plate; 405. Fixing frame; 406. Return spring; 407. Fixing shaft; 408. Correction plate; 409. Connecting groove; 410. Connecting shaft; 411. Adjusting gravity roller; 412. Anti-slip ramp; 413. Semi-circular mounting groove ; 414, Pressure sensor; 5, Grouting assembly; 501, Connecting pipeline; 502, Mounting base plate; 503, Positioning bracket; 504, Grouting pipeline; 505, Liquid pump; 51, Injection mechanism; 510, Connecting U-shaped pipe; 511, Delivery pipeline; 512, Solenoid valve; 513, Grouting double-ended pipeline; 514, Reinforcing rod; 6, Integrated base plate; 7, Pile embedding hole; 8, Bearing steel plate; 9, Tilt sensor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Refer to Figures 1-8As shown, the present invention provides a technical solution: a large slenderness ratio pile foundation construction correction device based on pile posture self-adaptation, including a pile foundation cap 1, a pile body 2, and correction components 4. The correction components 4 are used to automatically correct the axial direction when the pile body 2 deviates. Multiple correction components 4 are provided, and the multiple correction components 4 are distributed on the four sides of the pile body 2. Multiple strain gauge modules 3 are provided on the outer surface of each of the four sides of the pile body 2. The strain gauge modules 3 are used to monitor the stress of the pile body 2 in real time to prevent correction damage. Bearing steel plates 8 are fixedly connected to the outer surface of each of the four sides of the pile body 2. An inclination sensor 9 is provided on the outer surface of each bearing steel plate 8. The inclination sensor 9 is used to detect the axial posture of the pile body 2 in real time. The correction components 4 include hydraulic jacks 401 and support trusses 403. An adjusting inclined block 402 is fixedly connected to the top end of 01. A fixed frame 405 is fixedly connected to the top of the supporting truss 403. A fixed shaft 407 is fixedly connected between the inner walls of the fixed frame 405. A correction plate 408 is rotatably sleeved on the outer surface of the fixed shaft 407. A semi-circular mounting groove 413 is opened at the top end of the correction plate 408. Multiple pressure sensors 414 are set on the inner wall of the semi-circular mounting groove 413. The pressure sensors 414 are used to sense the pressure changes generated by the pile body 2 on the correction plate 408 in real time. A pile embedding hole 7 is opened at the top of the pile foundation 1. The pile body 2 is embedded in the pile embedding hole 7. An integrated base plate 6 is fixedly connected to the top of the pile foundation 1. The correction component 4 is fixedly installed on the top of the integrated base plate 6. A grouting component 5 is fixedly installed on the top of the integrated base plate 6.

[0021] In this embodiment, during use, the pile body 2 is inserted into the pile embedding hole 7, and the pile foundation cap 1 is connected to the pile body 2. During the construction of the pile body 2, the attitude of the pile body 2 is monitored in real time. When a deviation is detected, the correction action is automatically triggered without interrupting construction, avoiding the inefficiency and damage to the pile body 2 caused by traditional post-correction. This ensures that the verticality deviation of the large slenderness ratio pile foundation is controlled within the specification requirements. Before the pile body 2 is inserted into the pile embedding hole 7, zero-point calibration is completed by the tilt sensor 9, and the initial vertical reference of the pile body 2 is recorded. The initial stress value of the pile body 2 is synchronously collected by the strain gauge module 3 as the reference for subsequent safety thresholds. The tilt sensor 9 installed on the four sides of the pile body 2 can collect the tilt data of the pile body 2. When the tilt of the pile body 2 is detected, the abnormal signal is sent to the external main control system, which automatically corresponds to the correction component 4 on one side. Thus, under the action of the hydraulic jack 401, the pile body 2 is automatically corrected. Meanwhile, the pressure sensors 414 installed on the four sides will exert initial pressure on the pile body 2 upon contact. When the value of one set of pressure sensors 414 increases abnormally, it indicates that the pile body 2 is tilting to that side. Then, automatic correction is performed to keep the pile body 2 vertical, solving the problem of pile body tilting caused by excessive slenderness ratio, uneven geological hardness, and the influence of pressurized water. At the same time, during the correction process, the strain gauge module 3 monitors the stress of the pile body 2. When the stress is too high, it automatically adjusts to a small-step jacking mode to avoid damage to the pile body. During correction, the hydraulic jack 401 will push the pile body 2 to correct the tilt. The strain gauge module 3 is like the eye of force measurement, observing the force on the pile body 2 when it is pushed by the hydraulic jack 401. Once it is found that the force is about to reach the point where the pile body 2 cannot withstand it, the control system will automatically change from "high force, large amplitude jacking" to "low force, small amplitude multiple jacking" to slowly straighten the pile body 2 and prevent the pile body 2 from being damaged.

[0022] Example 2: Figures 1-8As shown, a pile embedment hole 7 is provided on the top of the pile cap 1, and the pile body 2 is embedded in the pile embedment hole 7. An integrated base plate 6 is fixedly connected to the top of the pile cap 1. The correction component 4 is fixedly installed on the top of the integrated base plate 6. A grouting component 5 is fixedly installed on the top of the integrated base plate 6. The grouting component 5 includes a connecting pipe 501, which is located outside the pile body 2. The two ends of the connecting pipe 501 are connected by hinges to form a ring. Positioning brackets 503 are fixedly connected to the bottom of the connecting pipe 501 near the four corners. Mounting base plates 502 are fixedly connected to the bottom of the four positioning brackets 503. The four mounting base plates 502 are fixedly installed on the top of the integrated base plate 6. A liquid pump 50 is provided on the top of the pile cap 1. 5. The output end of the liquid pump 505 is fixedly connected to the grouting pipeline 504. The top end of the grouting pipeline 504 is fixedly connected through the connecting pipeline 501 to its interior. The grouting assembly 5 also includes an injection mechanism 51, and four injection mechanisms 51 are provided. The injection mechanism 51 includes a connecting U-shaped pipe 510. Both ends of the connecting U-shaped pipe 510 are fixedly connected to the connecting pipeline 501. The bottom of the connecting U-shaped pipe 510 is fixedly connected to a conveying pipeline 511. The bottom end of the conveying pipeline 511 is fixedly connected to a grouting double-ended pipe 513. The outer surface of the conveying pipeline 511 is provided with a solenoid valve 512. The outer surfaces of both ends of the grouting double-ended pipe 513 are fixedly connected with reinforcing rods 514. The top end of each reinforcing rod 514 is fixedly installed at the bottom of the connecting pipeline 501.

[0023] In this embodiment, during use, the two ends of the connecting U-shaped pipe 510 are connected by hinges to form a loop around the outside of the pile body 2. The mounting base plate 502 is installed on top of the integrated base plate 6, thereby supporting the connecting pipe 501. When the pile body 2 tilts and automatic attitude correction is performed, a gap will appear between the pile body 2 and the pile embedding hole 7. At this time, the control system controls the opening of the corresponding solenoid valve 512, so that the connecting U-shaped pipe 510, the conveying pipe 511, and the grouting double-ended pipe 513 at the installation location of the solenoid valve 512 are connected to the connecting pipe 501. Then, the mud storage container is connected to the input end of the liquid pump 505. By starting the liquid pump 505, the mud in the container is extracted under its pressure and enters the connecting pipe 501 through the grouting pipe 504. Next, the mud enters the connecting U-shaped pipe 510 with the solenoid valve 512 opened. After being transported by the conveying pipe 511, it enters the grouting double-head pipe 513. The two outlets of the grouting double-head pipe 513 are aligned with the gap between the pile body 2 and the pile embedding hole 7. By injecting mud into the gap, the pile body 2 can be prevented from tilting again, and the stability of the pile body 2's attitude self-adaptation correction can be improved.

[0024] Example 3: Figures 1-8As shown, the correction assembly 4 includes a hydraulic jack 401 and a support truss 403. An adjusting wedge 402 is fixedly connected to the top end of the hydraulic jack 401. A fixing frame 405 is fixedly connected to the top of the support truss 403. A fixing shaft 407 is fixedly connected between the inner walls of the fixing frame 405. A correction plate 408 is rotatably fitted onto the outer surface of the fixing shaft 407. A pile embedding hole 7 is opened at the top of the pile foundation cap 1. The pile body 2 is embedded inside the pile embedding hole 7. An integrated base plate 6 is fixedly connected to the top of the pile foundation cap 1. The correction assembly 4 is fixedly installed on the top of the integrated base plate 6. A grouting assembly 5 is fixedly installed on the top of the integrated base plate 6. A connecting groove 409 is opened at the bottom end of the correction plate 408. A connecting shaft is fixedly connected between the inner walls of the connecting groove 409. 410, an adjusting gravity roller 411 is rotatably connected to the outer surface of the connecting shaft 410. One side of the outer surface of the adjusting inclined block 402 is inclined, and an anti-slip inclined surface 412 is provided on the inclined side. The top of the anti-slip inclined surface 412 is in contact with the outer surface of the adjusting gravity roller 411. Limiting side plates 404 are fixedly connected to the outer surface of the supporting truss 403 near both sides. The limiting side plates 404 are used to limit the vertical movement direction of the adjusting inclined block 402. A return spring 406 is provided on the inner bottom surface of the fixed frame 405. The top of the return spring 406 is fixedly connected to the bottom of the correction plate 408 near the top. The return spring 406 is used to elastically support the correction plate 408 so that the adjusting gravity roller 411 is kept in contact with the anti-slip inclined surface 412.

[0025] In this embodiment, during use, the hydraulic jacks 401 arranged on the four sides of the pile body 2 are connected to an external control system, thus allowing different hydraulic jacks 401 to be driven separately. When the tilt sensor 9 detects a deviation in the posture of the pile body 2, the pressure sensor 414 in the direction of deviation will increase in pressure. Initially, the pressure sensor 414 is only in contact with the surface of the pile body 2 and will not be subjected to much pressure. During the correction process, the hydraulic jacks 401 are activated, causing them to push the adjusting block 402 upward. At this time, under the extension of the return spring 406 and the gravity of the adjusting gravity roller 411, the pile body 2 is adjusted upward. This ensures that the adjusting gravity roller 411 is always pressed against the anti-slip slope 412, which improves the wear resistance of the inclined surface of the adjusting block 402. By pushing the adjusting gravity roller 411 upward with the adjusting block 402, the correction plate 408 will rotate around the fixed shaft 407 as the rotation center. This causes the end of the correction plate 408 with the pressure sensor 414 installed to push the pile body 2, thereby completing the correction of the pile body 2. In actual construction, correction components 4 can be added according to the width of the pile body 2, so that multiple hydraulic jacks 401 located on the same side can be lifted simultaneously to avoid insufficient lifting force.

[0026] The method and working principle of this device are as follows: During use, the pile body 2 is inserted into the pile embedment hole 7, connecting the pile foundation cap 1 to the pile body 2. During the construction of the pile body 2, its posture is monitored in real time. When deviation is detected, a correction action is automatically triggered without interrupting construction, avoiding the inefficiency and damage to the pile body 2 caused by traditional post-construction correction. This ensures that the verticality deviation of large slenderness ratio piles is controlled within the specified requirements. Before the pile body 2 is inserted into the pile embedment hole 7, zero-point calibration is performed using an inclination sensor 9 to record the initial vertical reference of the pile body 2. The initial stress value of the pile body 2 is simultaneously collected by the strain gauge module 3 as a reference for subsequent safety thresholds. The inclination sensors 9 installed on the four sides of the pile body 2 are used to measure the stress. The system can collect tilt angle data of the pile body 2. When tilting of the pile body 2 is detected, an abnormal signal is sent to the external main control system, which automatically adjusts the corresponding correction component 4 on one side. Under the action of the hydraulic jack 401, the pile body 2 is automatically straightened. At the same time, the pressure sensors 414 installed on the four sides will exert initial pressure on the pile body 2 upon contact. When the value of one set of pressure sensors 414 increases abnormally, it indicates that the pile body 2 is tilting to that side, so automatic correction is performed to keep the pile body 2 vertical. During the correction process, the strain gauge module 3 monitors the stress of the pile body 2. If the stress is too high, it automatically adjusts to a small-step jacking mode to avoid damage to the pile body. During correction, the hydraulic jack 401... The hydraulic jack 401 pushes the pile body 2 to correct the tilt. The strain gauge module 3 acts as the force measuring eye, observing the force on the pile body 2 when it is pushed by the hydraulic jack 401. By connecting the hydraulic jacks 401, which are set on the four sides of the pile body 2, to the external control system, different hydraulic jacks 401 can be driven separately. When the tilt sensor 9 detects that the pile body 2 is tilted, the pressure sensor 414 in the tilt direction will increase the pressure. In the initial state, the pressure sensor 414 is only in contact with the surface of the pile body 2 and will not be subjected to much pressure. During the correction process, the hydraulic jack 401 is activated, which pushes the adjusting block 402 upward. At this time, the return spring 406 extends and the adjusting weight... The gravity of the adjusting gravity roller 411 ensures that it remains in constant contact with the anti-slip inclined surface 412. By pushing the adjusting gravity roller 411 upwards with the adjusting block 402, the correction plate 408 rotates around the fixed shaft 407. This causes the end of the correction plate 408 equipped with the pressure sensor 414 to push the pile body 2, thus correcting the pile body 2. In actual construction, correction components 4 can be added according to the width of the pile body 2, allowing multiple hydraulic jacks 401 located on the same side to lift simultaneously. The two ends of the connecting U-shaped pipe 510 are connected by hinges to form a loop around the outside of the pile body 2. The mounting base plates 502 are then installed on top of the integrated base plate 6.This allows the connecting pipe 501 to be supported. When the pile body 2 tilts and automatic attitude correction is performed, a gap will appear between the pile body 2 and the pile embedding hole 7. At this time, the control system opens the corresponding solenoid valve 512, so that the connecting U-shaped pipe 510, the conveying pipe 511, and the grouting double-ended pipe 513 at the installation location of the solenoid valve 512 are connected to the connecting pipe 501. Then, the mud storage container is connected to the input end of the liquid pump 505, and the pump is started. The hydraulic pump 505, under its pressurization, extracts the slurry from the container, which then flows through the grouting pipe 504 into the connecting pipe 501. Next, the slurry enters the connecting U-shaped pipe 510 with the solenoid valve 512 open, and after being conveyed through the conveying pipe 511, it enters the double-ended grouting pipe 513. The two outlets of the double-ended grouting pipe 513 are aligned with the gap between the pile body 2 and the pile embedment hole 7. By injecting slurry into the gap, the pile body 2 can be prevented from tilting again.

[0027] The wiring diagrams for the strain gauge module 3, hydraulic jack 401, tilt sensor 9, pressure sensor 414, hydraulic pump 505, and solenoid valve 512 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring arrangements for the strain gauge module 3, hydraulic jack 401, tilt sensor 9, pressure sensor 414, hydraulic pump 505, and solenoid valve 512 will not be explained in detail.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio, comprising a pile cap (1), a pile body (2), and correction components (4), wherein the correction components (4) are used to automatically correct the axial direction when the pile body (2) deviates, and multiple correction components (4) are provided, the multiple correction components (4) being distributed on the four sides of the pile body (2), characterized in that: Multiple strain gauge modules (3) are provided on the four outer surfaces of the pile body (2), and the strain gauge modules (3) are used to monitor the stress of the pile body (2) in real time to prevent correction damage. The four outer surfaces of the pile body (2) are fixedly connected with bearing steel plates (8). Each bearing steel plate (8) is provided with an inclination sensor (9) on its outer surface, and the inclination sensor (9) is used to detect the axial attitude of the pile body (2) in real time. The correction assembly (4) includes a hydraulic jack (401) and a support truss (403). An adjusting wedge (402) is fixedly connected to the top end of the hydraulic jack (401). A fixed frame (405) is fixedly connected to the top of the support truss (403). A fixed shaft (407) is fixedly connected between the inner walls of the fixed frame (405). A correction plate (408) is rotatably sleeved on the outer surface of the fixed shaft (407). A semi-circular mounting groove (413) is opened at one end of the correction plate (408) near the top. Multiple pressure sensors (414) are provided on the inner wall of the semi-circular mounting groove (413). The pressure sensors (414) are used to sense the pressure changes generated by the pile body (2) on the correction plate (408) in real time.

2. The pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio as described in claim 1, characterized in that: The top of the pile foundation (1) is provided with a pile embedding hole (7), the main body of the pile (2) is embedded in the pile embedding hole (7), the top of the pile foundation (1) is fixedly connected with an integrated base plate (6), the correction component (4) is fixedly installed on the top of the integrated base plate (6), and the top of the integrated base plate (6) is fixedly installed with a grouting component (5).

3. The pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio as described in claim 2, characterized in that: The bottom end of the correction plate (408) is provided with a connecting groove (409), and a connecting shaft (410) is fixedly connected between the inner walls of the connecting groove (409). An adjusting gravity roller (411) is rotatably connected to the outer surface of the connecting shaft (410).

4. The large slenderness ratio pile foundation construction correction device based on pile posture self-adaptation according to claim 3, characterized in that: The outer surface of the adjusting block (402) is inclined on one side, and an anti-slip slope (412) is provided on the inclined side. The top of the anti-slip slope (412) is in contact with the outer surface of the adjusting gravity roller (411). The outer surface of the supporting truss (403) is fixedly connected to the limiting side plate (404) near the two sides, and the limiting side plate (404) is used to limit the vertical movement direction of the adjusting block (402).

5. The pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio as described in claim 4, characterized in that: The bottom surface of the fixed frame (405) is provided with a return spring (406). The top end of the return spring (406) is fixedly connected to the bottom of the correction plate (408) near the top end. The return spring (406) is used to elastically support the correction plate (408) so that the adjusting gravity roller (411) is kept in contact with the anti-slip slope (412).

6. The pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio as described in claim 5, characterized in that: The grouting assembly (5) includes a connecting pipe (501), which is located outside the pile body (2), and the two ends of the connecting pipe (501) are connected by hinges to form a ring.

7. The pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio as described in claim 6, characterized in that: The bottom of the connecting pipe (501) is fixedly connected to the four corners with positioning brackets (503), and the bottom of the four positioning brackets (503) is fixedly connected to the mounting base plate (502). The four mounting base plates (502) are fixedly installed on the top of the integrated base plate (6). A liquid pump (505) is installed on the top of the pile foundation (1). The output end of the liquid pump (505) is fixedly connected to the grouting pipe (504). The top end of the grouting pipe (504) is fixedly inserted through the connecting pipe (501) into its interior.

8. The pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio as described in claim 7, characterized in that: The grouting assembly (5) also includes an injection mechanism (51), and four injection mechanisms (51) are provided. Each injection mechanism (51) includes a connecting U-shaped pipe (510). Both ends of the connecting U-shaped pipe (510) are fixedly connected to the connecting pipeline (501), and the bottom of the connecting U-shaped pipe (510) is fixedly connected to a conveying pipeline (511).

9. The pile foundation construction correction device based on pile posture self-adaptation with large slenderness ratio as described in claim 8, characterized in that: The bottom end of the conveying pipe (511) is fixedly connected to a grouting double-ended pipe (513). An electromagnetic valve (512) is provided on the outer surface of the conveying pipe (511). Both ends of the grouting double-ended pipe (513) are fixedly connected to a reinforcing rod (514). The top end of each reinforcing rod (514) is fixedly installed at the bottom of the connecting pipe (501).

10. A method for using a pile foundation construction correction device with a large slenderness ratio based on pile posture self-adaptation, characterized in that... The method of using the pile posture adaptive large slenderness ratio pile foundation construction correction device according to claim 9 includes the following steps: S1. During the construction of the main body of the pile (2), the posture of the main body of the pile (2) is monitored in real time. When the deviation is detected, the correction action is automatically triggered. Before the main body of the pile (2) enters the pile embedding hole (7), the zero point calibration is completed by the tilt sensor (9), the initial vertical reference of the main body of the pile (2) is recorded, and the initial stress value of the main body of the pile (2) is collected synchronously by the strain gauge module (3) as the reference for the subsequent safety threshold. S2. The tilt angle data of the pile body (2) is collected by the tilt angle sensor (9). When the tilt of the pile body (2) is detected, the abnormal signal is sent to the external control system. The correction component (4) on one side is automatically adjusted under the action of the hydraulic jack (401). The value of the pressure sensor (414) increases abnormally, indicating that the pile body (2) is tilted to that side. Automatic correction is then performed to keep the pile body (2) vertical. During the correction process, the strain gauge module (3) monitors the stress of the pile body (2). S3. When the tilt sensor (9) detects that the main body of the pile (2) is tilted, the pressure of the pressure sensor (414) in the tilt direction will increase. By starting the hydraulic jack (401), it will push the adjusting block (402) upward, and then push the adjusting gravity roller (411) upward. The correction plate (408) will rotate around the fixed shaft (407) as the rotation center, so that the correction plate (408) pushes the main body of the pile (2) to correct the tilt. S4. Connect the two ends of the connecting U-shaped pipe (510) with a hinge to form a loop around the outside of the pile body (2). When the pile body (2) is tilted, a gap will appear between the pile body (2) and the pile embedding hole (7). The corresponding electromagnetic valve (512) and the liquid pump (505) are opened by the control system to pump the mud into the grouting double-ended pipe (513) and inject the mud into the gap.

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