Synchronous deviation rectifying construction device for inserting and driving super-long large-diameter PHC inclined pile

Abstract

The invention provides an ultra-long large-diameter PHC inclined pile inserting and driving synchronous deviation rectifying construction device, and belongs to the technical field of PHC inclined pile inserting and driving synchronous deviation rectifying. The ultra-long large-diameter PHC inclined pile inserting and driving synchronous deviation rectifying construction device comprises a supporting assembly, a deviation rectifying assembly, a track assembly, a pile head and an angle sensor; the horizontal plane supported by the supporting device coincides with the plane where the minimum pipe diameter of the PHC pile is located, and the supporting device is used for determining an inclined plane; and the deviation rectifying assembly is arranged in the PHC pile. The problems that in existing construction, deviation rectifying can be conducted only after the construction process is interrupted, so that the construction efficiency is low, and the construction period is long can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of synchronous deviation correction of PHC inclined pile driving, and in particular relates to a super-long large diameter PHC inclined pile driving synchronous deviation correction construction device. Background Art

[0002] Prefabricated pipe piles (PHC piles) have become a widely used pile foundation form in foundation engineering due to their excellent performance. Traditional PHC pipe piles are usually vertical structures. During construction, the prefabricated pipe piles are driven vertically into the soil layer using a pile delivery device. However, with the growing demand for design flexibility in building structures, the application of oblique pile foundations has gradually increased. The construction difficulty of oblique pile delivery is significantly higher than that of vertical pile delivery, and it is more likely to have problems such as tilting and deviation, and requires higher construction accuracy. At present, the correction measures for oblique piles are mainly concentrated in two methods: first, unloading by excavating the soil on the deviated side to alleviate the tilt of the pile foundation; second, applying horizontal thrust to the deviated side of the pile foundation in an attempt to correct it back to its original position. However, both of these correction methods have limitations. They are only applicable to conditions where the pile foundation is driven into a shallow depth and the degree of deviation is small. Once the pile foundation is driven into a deeper depth or the deviation is large, these methods will be difficult to work, and may even cause secondary damage to the pile foundation.

[0003] In addition, when adopting the above-mentioned traditional correction measures, the pile delivery operation must be suspended and construction can only be resumed after the correction is completed. This interrupted construction method not only seriously affects the overall construction efficiency, but may also prolong the construction period and increase project costs. Summary of the invention

[0004] In view of this, the present invention provides an ultra-long large diameter PHC inclined pile driving synchronous correction construction device, which can solve the problem that the construction process needs to be interrupted before correction can be carried out in the existing construction, resulting in low construction efficiency and long construction period.

[0005] The present invention is achieved in that:

[0006] The present invention provides a super-long long-diameter PHC inclined pile driving synchronous deviation correction construction device, which includes a support component, a deviation correction component, a track component, a pile head and an angle sensor. The support component goes deep into the interior of the PHC pile, and the horizontal plane of its support coincides with the plane where the minimum pipe diameter of the PHC pile is located, which is used to determine the inclined surface; the deviation correction component is arranged inside the PHC pile, and includes two, which are respectively fixed at the upper part and the lower part, and are used to adjust the inclination angle of the PHC pile by punching; the pile head is arranged at the bottom of the support component, and is used to drill a hole downward to install the PHC pile; the pile head and the support component A power shaft is arranged at the center position above the PHC pile, and the length direction of the power shaft is the same as the inclination direction of the PHC pile; the track assembly is fixed between the support assembly and the power shaft, and is used to limit the direction of the hammer force transmitted downward by the power shaft to further ensure that the installation angle of the PHC pile meets the construction requirements; the angle sensor includes two groups, one of which is fixed on the outer wall of the PHC pile, and is used to monitor the angle difference between the PHC pile and the ground during the construction process; one group of the angle sensors is fixed on the support assembly, and is used to monitor the angle difference between the support assembly and the power shaft.

[0007] The technical effects of the synchronous deviation correction construction device for driving and inserting super-long large-diameter PHC inclined piles provided by the present invention are as follows: 1. By setting a deviation correction component, when the pile body axis deviates relative to the design axis, the pile body can be corrected immediately to avoid excessive deviation of the pile foundation, which increases the difficulty of deviation correction and significantly improves the driving accuracy of the PHC inclined piles.

[0008] 2. Since the correction component can perform correction operations simultaneously, it avoids the need to stop the pile delivery operation for correction in the traditional method, thereby improving the pile planting efficiency; it can also avoid the need for rework due to excessive angle deviation, thereby improving construction efficiency and shortening the construction period.

[0009] 3. Timely correction can keep the angle of the pile body within the allowable error range required by the design, avoiding the impact of excessive angle deviation on the overall bearing capacity and stability of the pile foundation; avoiding pile foundation position deviation caused by accumulated angle deviation, and ensuring the accurate position of the pile foundation.

[0010] 4. Pile angle deviation will cause eccentric force on the pile body, increase the bending moment of the pile body, and reduce the bearing capacity and stability of the pile foundation. Timely correction can avoid this situation.

[0011] 5. Accurate pile body angle can improve the safety of pile foundation and reduce safety hazards caused by unstable pile body; pile body angle that meets design requirements can smoothly pass project acceptance and ensure project quality.

[0012] 6. Under complex geological conditions, the pile body is easily affected by the formation resistance and causes angle deviation. Timely correction can overcome the formation resistance and ensure that the pile body sinks at the predetermined angle.

[0013] On the basis of the above technical solution, the ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device of the present invention can also be improved as follows:

[0014] Wherein, the correction assembly includes a correction ring, a pressure piston and a stamping tube. The correction ring is annular, and its inner diameter matches the inner diameter of the PHC pile; the pressure piston is fan-shaped, arranged inside the correction ring, and matches the internal structure of the correction ring; the pressure piston includes two, which are respectively arranged at symmetrical positions inside the correction ring and separated by two partitions in the middle; the stamping tube includes four, which are respectively arranged at the top of the four areas of the correction ring separated by the two pressure pistons and two partitions, and are all connected with the correction ring, and are used to punch into the inside of the correction ring to push the pressure piston to apply pressure to the correction ring and the PHC pile abutted by the correction ring; the correction ring is fixed in the PHC pile by a clamping member, which is used to ensure that the correction ring moves only on the surface perpendicular to the PHC pile;

[0015] The deviation-correcting ring is made of aluminum alloy.

[0016] The beneficial effects of adopting the above improved solution are: by controlling the gas pressure, the force applied to one side of the PHC pile can be accurately adjusted, thereby achieving precise angle adjustment. The control of the pressure system is relatively simple, and the operator can make adjustments based on real-time monitoring data, making the correction process more controllable.

[0017] Compared with using mechanical force to directly apply the corrective force, the pneumatic system causes less wear on the equipment during the force application process, which can extend the service life of the equipment. It reduces the dependence on mechanical mechanisms, reduces mechanical complexity, and reduces potential failure points.

[0018] The gas force has a buffering effect, which can avoid excessive impact on the PHC pile during the force application process and protect the integrity of the pile structure.

[0019] Furthermore, a trapezoidal groove is provided on the inner wall of the correction ring, the long side of the trapezoidal groove is parallel to the axis of the correction ring, and the short side is perpendicular to the radial direction of the correction ring, so as to increase the contact area between the pressure piston and the correction ring, so as to improve the pressure transmission efficiency and reduce the friction loss;

[0020] A seal is provided at the contact position between the pressure piston and the correcting ring. The seal includes a three-layer structure, which includes a sealing layer, a pressure equalizing layer and a pushing layer in sequence along the moving direction of the PHC pile. The sealing layer, the pressure equalizing layer and the pushing layer are integrally connected; the elastic coefficient of the pressure equalizing layer is between that of the sealing layer and the pushing layer, and is used to evenly disperse the driving force exerted on the pushing layer and transfer it to the sealing layer, so as to push the sealing layer to move in parallel; the sealing layer is composed of a silicone rubber ring with a trapezoidal cross-section, and the wider bottom edge of the trapezoidal cross-section faces the inner wall of the correcting ring, so as to increase the contact area between the sealing layer and the inner wall of the correcting ring, and reduce the friction resistance at the same time.

[0021] Furthermore, the diameter of the lower bottom surface of the correcting ring is larger than the diameter of its upper top surface, and the outer ring of the lower bottom surface is connected to a pressing layer through a spring for abutting against the inner wall of the PHC pile; the clamping piece is fixed to the top of the correcting ring and is coaxially arranged with the correcting ring.

[0022] Furthermore, the clamping member includes a support tube, which is a double-layer sealing structure, sleeved on the power shaft, and the bottom is fixedly connected to the top of the correcting ring; a wedge block is arranged inside the double-layer sealing structure of the support tube; a through hole is opened on the lower surface of the wedge block, and a cover plate is arranged on the top of the through hole, the lower surface of the left side of the cover plate is rotatably connected to the inner surface of the support tube, the upper surface of the right side of the cover plate is rotatably connected to a pull plate, the upper surface of the cover plate is rotatably connected to a rotating plate, the upper surface of the left side of the rotating plate is rotatably connected to a connecting rod, the top end of the connecting rod is movably connected to a sealing plug, the outer surface of the sealing plug is slidably connected to the inner surface of the support tube; the top of the support tube is through-connected to the air pressure pump.

[0023] The beneficial effect of adopting the above-mentioned improvement scheme is that the clamping assembly can firmly fix the deviation-correcting assembly in a specific position to prevent it from axial displacement due to vibration, impact or other external forces during the piling process.

[0024] The fixing function of the tightening component helps to maintain the tilt angle of the correction component and avoid changes in the correction direction due to displacement, thereby ensuring the angle accuracy and stability of the correction.

[0025] Furthermore, the support assembly includes an outer support plate, an inner support plate and a fixing assembly, the outer support plate and the inner support plate each include 4, and the corresponding outer support plates and the inner support plates are fixedly connected by a group of the fixing assemblies; the shape of the outer support plate matches the shape of the inner wall of the PHC pile, and the shape of the inner support plate matches the shape of the outer wall of the power shaft; the fixing assemblies include two, which are symmetrically fixed between the outer support plate and the inner support plate.

[0026] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting the support assembly, it is possible to ensure that the direction of the power shaft and the pile head does not deviate, and avoid part of the impact force from being converted into useless lateral force or friction force, thereby reducing the energy transmission efficiency. The parallelism of the power shaft and the pile head with the PHC inclined pile ensures the effective utilization of power energy, reduces energy loss, ensures the uniformity of the force on the pile body, and reduces the risk of pile body damage.

[0027] Furthermore, the fixing assembly includes a mounting rod, a support arm and a multi-link cantilever, the mounting rod is arranged on the outer support plate, the support arm is arranged on the inner support plate, the multi-link cantilever is connected between the mounting rod and the support arm, and the multi-link cantilever is used to support the mounting rod and the support arm; a positioning assembly is arranged on the mounting rod, the positioning assembly includes a slide groove and a limit block, the slide groove and the limit block are arranged on the mounting rod, a guide groove is provided in the limit block, the guide groove and the slide groove are arranged to overlap, the limit block is provided with a group of multi-angle limiting positioning grooves spaced apart in the guide groove, and a sliding rod is provided at one end of the multi-link cantilever, the sliding rod passes through the slide groove and is slidably connected to the guide groove.

[0028] Furthermore, a mud output channel is provided at the side of the pile head, the mud output channel is in an arc-shaped structure, and an anti-backflow valve is provided at one end of the outlet.

[0029] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the main function of the mud output channel is to discharge the drilling debris (such as soil, rock cuttings, etc.) generated during the drilling process out of the hole through the scouring effect of the mud. The arc channel design can guide the mud flow to form a stronger scouring force and more effectively carry away the drilling debris. The arc channel can reduce the dead angle during the mud flow process, prevent the accumulation of drilling debris in the channel, keep the mud flow unobstructed, and ensure the efficiency of slag discharge.

[0030] Furthermore, a shock absorbing member is provided between the power shaft and the track assembly in the same direction as the track assembly.

[0031] Furthermore, a pile cap assembly is fixed on the top of the power shaft, and the pile cap assembly includes an upper pile cap, a lower pile cap and a plurality of connecting bolts. The upper pile cap and the lower pile cap are clamped together by the connecting bolts to form a whole. The lower pile cap is connected to the power shaft through an elastic coupling to reduce the transmission of torque so as to extend the service life of the power shaft.

[0032] The top of the upper pile cap is a friction surface, which serves as a force-bearing surface of the pile driver. The friction surface is provided with a thread spiraling toward the center position.

[0033] Compared with the prior art, the beneficial effects of the ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device provided by the present invention are:

[0034] 1. By setting up the deviation correction component, when the pile body axis deviates relative to the design axis, the pile body can be corrected immediately to avoid excessive deviation of the pile foundation, which will increase the difficulty of deviation correction and significantly improve the driving accuracy of PHC inclined piles.

[0035] 2. Since the correction component can perform correction operations simultaneously, it avoids the need to stop the pile delivery operation for correction in the traditional method, thereby improving the pile planting efficiency; it can also avoid the need for rework due to excessive angle deviation, thereby improving construction efficiency and shortening the construction period.

[0036] 3. Timely correction can keep the angle of the pile body within the allowable error range required by the design, avoiding the impact of excessive angle deviation on the overall bearing capacity and stability of the pile foundation; avoiding pile foundation position deviation caused by accumulated angle deviation, and ensuring the accurate position of the pile foundation.

[0037] 4. Pile angle deviation will cause eccentric force on the pile body, increase the bending moment of the pile body, and reduce the bearing capacity and stability of the pile foundation. Timely correction can avoid this situation.

[0038] 5. Accurate pile body angle can improve the safety of pile foundation and reduce safety hazards caused by unstable pile body; pile body angle that meets design requirements can smoothly pass project acceptance and ensure project quality.

[0039] 6. Under complex geological conditions, the pile body is easily affected by the formation resistance and causes angle deviation. Timely correction can overcome the formation resistance and ensure that the pile body sinks at the predetermined angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0041] Figure 1 It is a partial cross-sectional view of a synchronous deviation correction construction device for driving and inserting super-long-diameter PHC oblique piles;

[0042] Figure 2 A top view of a deviation-correcting assembly of a synchronous deviation-correcting construction device for driving and inserting ultra-long-diameter PHC oblique piles;

[0043] Figure 3 It is a bottom view of the pile head of a super-long-diameter PHC inclined pile driving and synchronous deviation correction construction device;

[0044] Figure 4A cross-sectional view of the pile head of a super-long-diameter PHC inclined pile driving and synchronous deviation correction construction device;

[0045] Figure 5 It is a schematic diagram of the internal structure of a clamping part of a super-long-diameter PHC inclined pile driving and synchronous deviation correction construction device;

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] 10. Support assembly; 11. Outer support plate; 12. Inner support plate; 13. Fixing assembly; 131. Mounting rod; 132. Support arm; 133. Multi-link cantilever; 20. Correction assembly; 21. Correction ring; 22. Pressure piston; 23. Stamping tube; 241. Support tube; 242. Through hole; 243. Cover plate; 244. Pull plate; 245. Turn plate; 246. Connecting rod; 247. Sealing plug; 30. Track assembly; 40. Pile head; 50. Angle sensor. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0049] like Figure 1-5 As shown in the figure, an embodiment of a super-long-diameter PHC inclined pile driving synchronous deviation correction construction device provided by the present invention is provided. In this embodiment, it includes a support component 10, a deviation correction component 20, a track component 30, a pile head 40 and an angle sensor 50. The support component 10 goes deep into the interior of the PHC pile, and the horizontal plane of its support coincides with the plane where the minimum pipe diameter of the PHC pile is located, which is used to determine the inclined surface; the deviation correction component 20 is arranged inside the PHC pile, and includes two, which are fixed at the upper part and the lower part respectively, and are used to adjust the inclination angle of the PHC pile by stamping; the pile head 40 is arranged at the bottom of the support component 10, and is used to drill a hole downward to install the PHC pile. HC pile; a power shaft is arranged above the PHC pile at the center of the pile head 40 and the support assembly 10, and the length direction of the power shaft is the same as the inclination direction of the PHC pile; the track assembly 30 is fixed between the support assembly 10 and the power shaft, and is used to limit the direction of the hammer force transmitted downward by the power shaft to further ensure that the installation angle of the PHC pile meets the construction requirements; the angle sensor 50 includes two groups, one of which is fixed on the outer wall of the PHC pile, and is used to monitor the angle difference between the PHC pile and the ground during the construction process; one group of angle sensors 50 is fixed on the support assembly 10, and is used to monitor the angle difference between the support assembly 10 and the power shaft.

[0050] Among them, in the above technical scheme, the correction component 20 includes a correction ring 21, a pressure piston 22 and a punching tube 23. The correction ring 21 is annular, and its inner diameter matches the inner diameter of the PHC pile; the pressure piston 22 is fan-shaped, arranged inside the correction ring 21, and matches the internal structure of the correction ring 21; the pressure piston 22 includes two, which are respectively arranged at symmetrical positions inside the correction ring 21, and separated by two partitions in the middle; the punching tube 23 includes four, which are respectively arranged at the top of the four areas of the correction ring 21 separated by two pressure pistons 22 and two partitions, and are all connected with the correction ring 21, and are used to punch into the correction ring 21 to push the pressure piston 22 to apply pressure to the correction ring 21 and the PHC pile abutted by the correction ring 21; the correction ring 21 is fixed in the PHC pile by a clamping member, which is used to ensure that the correction ring 21 only moves on the surface perpendicular to the PHC pile;

[0051] The deflection-correcting ring 21 is made of aluminum alloy.

[0052] Furthermore, in the above technical solution, a trapezoidal groove is provided on the inner wall of the correction ring 21, the long side of the trapezoidal groove is parallel to the axis of the correction ring 21, and the short side is perpendicular to the radial direction of the correction ring 21, so as to increase the contact area between the pressure piston 22 and the correction ring 21, so as to improve the pressure transmission efficiency and reduce the friction loss;

[0053] A seal is provided at the contact position between the pressure piston 22 and the correcting ring 21. The seal includes a three-layer structure, which includes a sealing layer, a pressure equalizing layer and a pushing layer in sequence along the moving direction of the PHC pile. The sealing layer, the pressure equalizing layer and the pushing layer are integrally connected; the elastic coefficient of the pressure equalizing layer is between the sealing layer and the pushing layer, and is used to evenly disperse the driving force exerted on the pushing layer and transfer it to the sealing layer, so as to push the sealing layer to move in parallel; the sealing layer is composed of a silicone rubber ring with a trapezoidal cross-section, and the wider bottom edge of the trapezoidal cross-section faces the inner wall of the correcting ring 21, so as to increase the contact area between the sealing layer and the inner wall of the correcting ring 21, and reduce the friction resistance at the same time.

[0054] Furthermore, in the above technical solution, the diameter of the lower bottom surface of the correcting ring 21 is larger than the diameter of its upper top surface, and the outer ring of its lower bottom surface is connected with a pressing layer through a spring, which is used to abut against the inner wall of the PHC pile; the clamping piece is fixed to the top of the correcting ring 21 and is coaxially arranged with the correcting ring 21.

[0055] Furthermore, in the above technical scheme, the clamping member includes a support tube 241, which is a double-layer sealing structure, sleeved on the power shaft, and the bottom is fixedly connected to the top of the correcting ring 21; a wedge block is arranged inside the double-layer sealing structure of the support tube 241; a through hole 242 is opened on the lower surface of the wedge block, and a cover plate 243 is arranged on the top of the through hole 242, the lower surface of the left side of the cover plate 243 is rotatably connected to the inner surface of the support tube 241, the upper surface of the right side of the cover plate 243 is rotatably connected to a pull plate 244, the upper surface of the cover plate 243 is rotatably connected to a rotating plate 245, the upper surface of the left side of the rotating plate 245 is rotatably connected to a connecting rod 246, the top of the connecting rod 246 is movably connected to a sealing plug 247, and the outer surface of the sealing plug 247 is slidably connected to the inner surface of the support tube 241; the top of the support tube 241 is through-connected to the air pressure pump.

[0056] Furthermore, in the above technical solution, the support assembly 10 includes an outer support plate 11, an inner support plate 12 and a fixing assembly 13. The outer support plate 11 and the inner support plate 12 each include 4, and the corresponding outer support plates 11 and the inner support plates 12 are fixedly connected by a group of fixing assemblies 13; the shape of the outer support plate 11 matches the inner wall shape of the PHC pile, and the shape of the inner support plate 12 matches the outer wall shape of the power shaft; the fixing assembly 13 includes two, which are symmetrically fixed between the outer support plate 11 and the inner support plate 12.

[0057] Furthermore, in the above technical scheme, the fixing assembly 13 includes a mounting rod 131, a support arm 132 and a multi-link cantilever 133, the mounting rod 131 is arranged on the outer support plate 11, the support arm 132 is arranged on the inner support plate 12, and the multi-link cantilever 133 is connected between the mounting rod 131 and the support arm 132, and the multi-link cantilever 133 is used to support the mounting rod 131 and the support arm 132; a positioning assembly is arranged on the mounting rod 131, and the positioning assembly includes a slide groove and a limit block, and the slide groove and the limit block are arranged on the mounting rod 131, and a guide groove is opened in the limit block, and the guide groove and the slide groove are arranged to overlap, and the limit block is opened with a group of limited multi-angle positioning grooves spaced apart in the guide groove, and a sliding rod is provided at one end of the multi-link cantilever 133, and the sliding rod passes through the slide groove and is slidably connected to the guide groove.

[0058] Furthermore, in the above technical solution, a mud output channel is provided at the side of the pile head 40, the mud output channel is in an arc-shaped structure, and an anti-backflow valve is provided at one end of the outlet.

[0059] Furthermore, in the above technical solution, a shock absorbing member is provided between the power shaft and the track assembly 30 in the same direction as the track assembly 30 .

[0060] Furthermore, in the above technical solution, a pile cap assembly is fixed on the top of the power shaft, and the pile cap assembly includes an upper pile cap, a lower pile cap and a plurality of connecting bolts, and the upper pile cap and the lower pile cap are clamped by the connecting bolts to form a whole; the lower pile cap is connected to the power shaft by an elastic coupling, which is used to reduce the transmission of torque to extend the service life of the power shaft;

[0061] The top of the upper pile cap is a friction surface, which serves as the force-bearing surface of the pile driver. The friction surface is provided with a thread spiraling toward the center position.

[0062] During the correction process, the angle sensor 50 is used to monitor the deviation of the pile axis relative to the design axis in real time during the pile driving process. If the pile axis deflects relative to the design axis, the correction operation is performed. The process is as follows:

[0063] (1) First, the deflection direction of the pile axis relative to the design axis is determined by the angle sensor 50;

[0064] (2) If the pile axis deflects relative to the design axis, gas is filled into the correction ring 21 through the punching tube 23, thereby pushing the pressure piston 22 to move in the correction ring 21, thereby exerting an internal force on the corresponding PHC pile and promoting the correction of the PHC pile;

[0065] (3) Hammer the pile to make it slowly sink and deflect toward the designed axis;

[0066] (4) During the hammering process, the deflection of the pile axis relative to the design axis is continuously monitored until the pile axis coincides with the design axis, and then the pile driving is temporarily stopped.

[0067] Example:

[0068] Step 1: Measurement and positioning;

[0069] 1. Before construction, the surveying department places the inclined pile positions, levels the area around the pile positions, and measures the original ground elevation of the pile positions. Since the inclined pile has a certain inclination angle, and there is a certain difference between the designed pile top elevation and the natural ground elevation, the designed pile top position and the position when driven are not on the same plumb line. Move forward or backward a certain distance along the inclination direction of the inclined pile (when the natural ground elevation is higher than the designed pile top elevation, move backward), and calculate the offset of the inclined pile injection position based on the difference between the natural ground elevation and the designed pile top and the inclination angle of the pile.

[0070] 2. In addition to controlling the position of the inclined piles, the inclination direction must also be controlled. The inclination direction should be determined according to the construction drawings. A point should be set in the opposite direction of the inclination, 15m behind the pile position. Use white lime to mark the two points and ensure that the gray line is in the center of the pile driver.

[0071] 3. Carry out regular inspections during construction. When the positioning point needs to be moved, first check its accuracy and keep measurement records. At the same time, carefully make measurement and layout records of each pile foundation, and promptly submit them to the supervisor for review. The review procedures must be timely and complete, and the pile can be injected only after approval by the supervisor.

[0072] Step 2: Pre-embed the guide sleeve;

[0073] 1. Dig down to a depth of 0.8 to 1m at the pile hole and carry out pre-embedded guide sleeve construction.

[0074] 2. To ensure the stability of the guide sleeve, C20 concrete is poured on the outside of the guide sleeve and on the original ground to provide a solid and reliable foundation for the pile driver. Steel bars are added to the concrete to improve the strength of the structure. Before and after the concrete pouring, the axis of the guide sleeve is measured to ensure that it is in a straight line with the designed axis of the PHC pile.

[0075] 3. Fill the guide sleeve with fine sand to prevent concrete from entering the guide sleeve during the construction of the concrete retaining ring, which will increase the difficulty of inserting the pipe pile.

[0076] Step 3: Processing and installation of prefabricated deviation-correcting pile heads;

[0077] 1. The prefabricated correction pile head is installed at the bottom of the PHC pipe pile. After the prefabricated correction pile head is installed, the motor is rotated to test whether it can drive the prefabricated correction pile head to rotate synchronously. At the same time, the power shaft is used to test whether the correction wing plate can be smoothly extended and retracted from the prefabricated correction pile head.

[0078] 2. After the prefabricated deviation-correcting pile head is installed and accepted, the lifting and driving operations shall be carried out.

[0079] Step 4: Pile axis adjustment;

[0080] 1. The PHC piles are hoisted on site by the winch of the pile driver. The pile cap is installed on the top of the PHC pile, and the cables, hydraulic pipelines, traction ropes, etc. on the deviation correction control system are extended from the L-shaped through hole in the pile cap to avoid breaking the cables and pipelines during the hammering process.

[0081] 2. Adjust the pile frame and the position of the pile driver during the tilting process. Generally, move the pile driver backward to ensure that the pile frame is parallel to the pipe pile, slowly tilt it to the tilt angle required for construction, and insert the lower end of the PHC pipe pile into the guide sleeve.

[0082] 3. To check the verticality of the pile, set a total station or a long plumb bob in front of the pile driver to keep the pile vertical in the inclined planing surface. Adjust the inclination angle and verticality of the pile by the lateral and sideways movement of the pile driver guide. Set the total station in a place not affected by piling and level it frequently to keep it vertical.

[0083] Step 5: Hammering piles;

[0084] 1. After the pile axis is adjusted into place and verified as qualified, the pipe pile driving operation can be carried out.

[0085] 2. Because the ground is relatively soft, the amount of sinking may be large during the initial driving. Use a low-lift hammer and hit lightly. As the pile sinks deeper, the sinking speed slows down and the height of the hammer is gradually increased. During the entire piling process, ensure that the pile hammer, pile cap and pile body are kept on the same axis. If necessary, adjust the direction of the pile hammer and the pile driver guide rod according to the direction of the pile body to prevent the pile from being hammered eccentrically. When it is difficult to sink the pile, check whether the drop hammer is tilted or eccentric, especially check whether the pile pad and pile cap are suitable. If not, replace or add soft pads; each pile should be driven continuously at one time without interruption to avoid difficulty in continuing to drive.

[0086] 3. Carry out correction work.

[0087] Specifically, the principle of the present invention is: during the process of pile driving, the deviation of the pile axis relative to the design axis is monitored in real time by the angle sensor 50. If the pile axis deflects relative to the design axis, a deviation correction operation is performed. The process is as follows:

[0088] (1) First, the deflection direction of the pile axis relative to the design axis is determined by the angle sensor 50;

[0089] (2) If the pile axis deflects relative to the design axis, gas is filled into the correction ring 21 through the punching tube 23, thereby pushing the pressure piston 22 to move in the correction ring 21, thereby exerting an internal force on the corresponding PHC pile and promoting the correction of the PHC pile;

[0090] (3) Hammer the pile to make it slowly sink and deflect toward the designed axis;

[0091] (4) During the hammering process, the deflection of the pile axis relative to the design axis is continuously monitored until the pile axis coincides with the design axis, and then the pile driving is temporarily stopped.

[0092] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A super-long diameter PHC inclined pile driving synchronous deviation correction construction device, characterized in that: The invention comprises a support component (10), a deviation correction component (20), a track component (30), a pile head (40) and an angle sensor (50); the support component (10) is inserted into the interior of a PHC pile, and the horizontal plane supported by the support component coincides with the plane where the minimum pipe diameter of the PHC pile is located, so as to determine the inclined plane; the deviation correction component (20) is arranged inside the PHC pile, and comprises two components, which are respectively fixed at the upper part and the lower part, and are used to adjust the inclination angle of the PHC pile by punching; the pile head (40) is arranged at the bottom of the support component (10) and is used to drill a hole downward to install the PHC pile; the center position of the pile head (40) and the support component (10) is oriented to the A power shaft is arranged above the PHC pile, and the length direction of the power shaft is the same as the inclination direction of the PHC pile; the track assembly (30) is fixed between the support assembly (10) and the power shaft, and is used to limit the direction of the hammer force transmitted downward by the power shaft to further ensure that the installation angle of the PHC pile meets the construction requirements; the angle sensor (50) includes two groups, one of which is fixed on the outer wall of the PHC pile and is used to monitor the angle difference between the PHC pile and the ground during the construction process; and one group of the angle sensors (50) is fixed on the support assembly (10) and is used to monitor the angle difference between the support assembly (10) and the power shaft.

2. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 1 is characterized in that: The correction assembly (20) comprises a correction ring (21), a pressure piston (22) and a punching tube (23); the correction ring (21) is annular, and its inner diameter matches the inner diameter of the PHC pile; the pressure piston (22) is fan-shaped, arranged inside the correction ring (21), and matches the internal structure of the correction ring (21); the pressure piston (22) comprises two, which are respectively arranged at symmetrical positions inside the correction ring (21) and separated by two partitions in the middle; the punching tube (23) comprises 4, respectively arranged at the top of the four areas of the correcting ring (21) separated by the two pressure pistons (22) and the two partitions, and all connected with the correcting ring (21), used for punching into the correcting ring (21) to push the pressure piston (22) to apply pressure to the correcting ring (21) and the PHC pile abutted by the correcting ring (21); the correcting ring (21) is fixed in the PHC pile by a clamping piece, used for ensuring that the correcting ring (21) moves only on a surface perpendicular to the PHC pile; The deviation correcting ring (21) is made of aluminum alloy.

3. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 2 is characterized in that: The inner wall of the correcting ring (21) is provided with a trapezoidal groove, the long side of which is parallel to the axis of the correcting ring (21) and the short side of which is perpendicular to the radial direction of the correcting ring (21), so as to increase the contact area between the pressure piston (22) and the correcting ring (21), thereby improving the pressure transmission efficiency and reducing the friction loss; A sealing member is provided at the contact position between the pressure piston (22) and the correcting ring (21), and the sealing member comprises a three-layer structure, which comprises a sealing layer, a pressure equalizing layer and a pushing layer in sequence along the moving direction of the PHC pile, and the sealing layer, the pressure equalizing layer and the pushing layer are integrally connected; the elastic coefficient of the pressure equalizing layer is between that of the sealing layer and the pushing layer, and is used to evenly disperse and transfer the pushing force exerted on the pushing layer to the sealing layer, so as to push the sealing layer to move in parallel; the sealing layer is composed of a silicone rubber ring with a trapezoidal cross section, and the wider bottom edge of the trapezoidal cross section faces the inner wall of the correcting ring (21), and is used to increase the contact area between the sealing layer and the inner wall of the correcting ring (21), and reduce the friction resistance at the same time.

4. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 3 is characterized in that: The diameter of the lower bottom surface of the correcting ring (21) is greater than the diameter of the upper top surface thereof, and the outer ring of the lower bottom surface is connected to a pressing layer via a spring for abutting against the inner wall of the PHC pile; the pressing member is fixed to the top of the correcting ring (21) and is coaxially arranged with the correcting ring (21).

5. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 4 is characterized in that: The clamping member comprises a support tube (241), the support tube (241) being a double-layer sealing structure, sleeved on the power shaft, and the bottom of which is fixedly connected to the top of the deviation-correcting ring (21); a wedge block is arranged inside the double-layer sealing structure of the support tube (241); a through hole (242) is opened on the lower surface of the wedge block, a cover plate (243) is arranged on the top of the through hole (242), and the lower surface of the left side of the cover plate (243) is rotatably connected to the inner surface of the support tube (241), The upper surface of the right side of the cover plate (243) is rotatably connected to a pull plate (244), the upper surface of the cover plate (243) is rotatably connected to a rotating plate (245), the upper surface of the left side of the rotating plate (245) is rotatably connected to a connecting rod (246), the top end of the connecting rod (246) is movably connected to a sealing plug (247), the outer surface of the sealing plug (247) is slidably connected to the inner surface of the support tube (241); the top of the support tube (241) is through-connected to the air pressure pump.

6. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 5 is characterized in that: The support assembly (10) comprises an outer support plate (11), an inner support plate (12) and a fixing assembly (13); the outer support plate (11) and the inner support plate (12) each comprise four, and the corresponding outer support plates (11) and the inner support plates (12) are fixedly connected via a group of the fixing assemblies (13); the shape of the outer support plate (11) matches the shape of the inner wall of the PHC pile, and the shape of the inner support plate (12) matches the shape of the outer wall of the power shaft; the fixing assemblies (13) comprise two, which are symmetrically fixed between the outer support plate (11) and the inner support plate (12).

7. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 6 is characterized in that: The fixing assembly (13) comprises a mounting rod (131), a bracket arm (132) and a multi-link cantilever (133); the mounting rod (131) is arranged on the outer support plate (11); the bracket arm (132) is arranged on the inner support plate (12); the multi-link cantilever (133) is connected between the mounting rod (131) and the bracket arm (132); the multi-link cantilever (133) is used to support the mounting rod (131) and the bracket arm (132); 32); A positioning assembly is arranged on the mounting rod (131), and the positioning assembly includes a slide groove and a limit block, the slide groove and the limit block are arranged on the mounting rod (131), a guide groove is opened in the limit block, the guide groove and the slide groove are arranged overlapping, the limit block is opened with a group of multi-angle positioning grooves spaced apart and distributed in the guide groove, and a sliding rod is arranged at one end of the multi-link cantilever (133), and the sliding rod passes through the slide groove and is slidably connected to the guide groove.

8. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 7 is characterized in that: A mud output channel is provided on the side of the pile head (40), the mud output channel is in an arc-shaped structure, and a backflow prevention valve is provided at one end of the outlet.

9. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 8 is characterized in that: A shock absorbing member is arranged between the power shaft and the track assembly (30) and is arranged in the same direction as the track assembly (30).

10. The ultra-long-diameter PHC inclined pile driving synchronous deviation correction construction device according to claim 9 is characterized in that: A pile cap assembly is fixed on the top of the power shaft, and the pile cap assembly includes an upper pile cap, a lower pile cap and a plurality of connecting bolts. The upper pile cap and the lower pile cap are clamped with the PHC pile by the connecting bolts to form a whole; the lower pile cap is connected to the power shaft by an elastic coupling to reduce the transmission of torque to extend the service life of the power shaft; The top of the upper pile cap is a friction surface, which serves as a force-bearing surface of the pile driver. The friction surface is provided with a thread spiraling toward the center position.

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