Construction method of environment-friendly high-strength precast concrete pipe pile

Abstract

The invention belongs to the technical field of pile foundation construction, and particularly relates to a construction method of an environment-friendly high-strength precast concrete pipe pile, which comprises the following steps: step 1, before construction, carrying out detailed investigation on a construction site through a geological radar, determining underground obstacles and geological conditions, formulating a hole forming and pile planting scheme according to a geological report, and constructing a pile; and proper drill bits and pile types are selected. According to the construction method, by arranging a hydraulic static pile planting technology, energy consumption and environmental influence in the construction process are effectively reduced, and noise and vibration are reduced; the equipment integrates various piling modes such as hammering, vibration and static pressure, the modes can be switched at any time according to geological changes in the construction process, the equipment does not need to be replaced, time and cost are saved, the construction efficiency is improved, meanwhile, the construction requirements of different engineering types can be met, the application range of the equipment is widened, and the equipment is worthy of popularization and application. And the universality of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation construction, and in particular to a construction method of an environmentally friendly high-strength prefabricated concrete pipe pile. Background Art

[0002] Precast concrete piles (PHC piles) are widely used in building foundation engineering due to their high strength, fast construction speed and wide applicability. However, traditional pile implantation technology is often accompanied by high energy consumption, high noise and greater environmental impact. Especially in densely populated cities or environmentally sensitive areas, how to reduce the noise, vibration and energy consumption generated during construction has become a problem that needs to be solved urgently.

[0003] Traditional PHC pile implantation methods mainly rely on vibratory hammers, impact hammers or static pressure methods. Although these methods can meet the requirements of pile foundation bearing capacity, they will generate large noise and vibration during the construction process, which will have an adverse impact on surrounding buildings and the environment. In addition, traditional construction methods are often accompanied by high energy consumption, and the construction efficiency and energy utilization rate are relatively low, which is difficult to meet the needs of modern green building construction. Summary of the invention

[0004] Based on the existing technical problems of noise reduction in pile foundation construction and switching of pile planting modes, the present invention proposes an environmentally friendly high-strength precast concrete pipe pile construction method.

[0005] The invention provides an environmentally friendly high-strength precast concrete pipe pile construction method, comprising the following steps:

[0006] Step 1: Before construction, conduct a detailed survey of the construction site using geological radar to determine underground obstacles and geological conditions, formulate a drilling and pile planting plan based on the geological report, and select the appropriate drill bit and pile type;

[0007] Step 2: Drilling rig in place: Position the multifunctional rotary drilling rig at the designed pile position and start the frequency conversion control system to drill;

[0008] Hole drilling process: adjust the drilling speed and torque according to the geological conditions to ensure the stability of the formation during the drilling process and avoid the occurrence of hole collapse and deviation. The intelligent monitoring system monitors the hole depth, hole diameter and geological conditions in real time and automatically adjusts the drilling parameters;

[0009] Hole forming inspection: After the hole is formed, special equipment is used to inspect the hole depth and diameter to ensure that it meets the design requirements;

[0010] Step 3: Preparation for pile driving: Move the pile driving equipment to the position where pile driving is required through its own moving mechanism. After moving to the designated position, the equipment will make fine adjustments to the position to ensure the accuracy of subsequent pile driving. The controller fixed on the base of the pile driving equipment will control the extension of the hydraulic lifting cylinder carried by the pile driving equipment until the lower end of the hydraulic lifting cylinder contacts the ground. Then, the height of each hydraulic lifting cylinder will be finely adjusted to ensure that the pile driving equipment remains stable. Then, the controller will control the pile driving mechanisms retracted on both sides of the base to open to the maximum angle respectively, and the two pile driving mechanisms will be parallel. Then, the controller will control the lifting mechanism to be perpendicular to the base. At this point, the preparatory work before pile driving is completed.

[0011] Pile preparation: transport the PHC pile to the site and place it in front of the pile-pressing mechanism. The distance between the PHC pile and the two uppermost points of the lifting mechanism should be controlled within the maximum length of the lifting mechanism's traction rope. Check the quality of the pile to ensure that there are no cracks or damage.

[0012] Pile positioning: The controller controls the lengthening of the traction rope, and the traction rope is manually fixed to one end of the PHC pile. The lifting mechanism moves one end of the PHC pile to one side of the pile pressing mechanism. The PHC pile is pulled up by the lifting mechanism through the pile pressing mechanism and is in a vertical state. The lifting mechanism slowly lowers the PHC pile to the top of the hole.

[0013] Hydraulic static pressing: Start the hydraulic static pile planting system, the pile pressing mechanism and the lifting mechanism, and slowly and evenly press the pile body into the hole. The pile pressing mechanism continuously presses the pile, and monitors the pressing force and displacement in real time to ensure that the PHC pile is implanted in place as designed.

[0014] Preferably, each of the pile driving mechanisms comprises a first hydraulic cylinder, a connecting plate is fixedly connected to the surface of the first hydraulic cylinder, the upper end of the hydraulic lifting cylinder is fixedly connected to a hydraulic turntable, the upper end of the hydraulic turntable is rotatably connected to one end of the connecting plate through a bearing, one side of the plate body of the connecting plate is fixedly connected to a first bearing, the inner ring of the first bearing is fixedly connected to a guide column, one end of the guide column is rotatably connected to the plate body on the other side of the connecting plate through the first bearing, a rotating groove is provided on the plate body on the inner side of the connecting plate, a second bearing is symmetrically fixedly connected along the central axis of the inner wall of the rotating groove, a second guide column is provided between the two second bearings, and the two ends of the second guide column are respectively fixedly connected to the inner rings of the two second bearings, a guide block is provided on the upper surface of the connecting plate, a static pressure member is provided on one side of the guide block, and a cable groove is provided on the upper surface of the connecting plate.

[0015] Preferably, the guide block is configured to be in an arc shape, and the width between the guide blocks of the two pile-pressing mechanisms is 1 cm larger than the outer diameter of the PHC pile.

[0016] Preferably, the static pressure member includes a placement groove, one side of the placement groove extends to the outside of the connecting plate, the inner top wall of the placement groove is fixedly connected to the lower bottom wall of the cable groove, the inner wall of the placement groove is provided with two second hydraulic cylinders, one end of the second hydraulic cylinder is fixedly connected to a fixing part, the fixing part includes a semicircular fixing block, the upper surface and the lower surface of the fixing block are respectively slidably connected to the upper inner wall and the lower inner wall of the placement groove, the upper surface of the fixing block is axially symmetrically connected with a third hydraulic cylinder, the upper end of the connecting plate is fixedly connected to an n-type frame, and the lower end of the n-type frame is connected to the upper surface of the connecting plate through a slide rail Sliding connection, the surface of the n-type frame is fixedly connected to the cylinder body surfaces of the two third hydraulic cylinders respectively, a semicircular groove matched with the outer surface of the PHC pile is opened at the center of the fixed block, a rubber gasket is fixedly set on the surface of the semicircular groove, and a limiting groove is symmetrically opened on the side of the fixed block, and the inner wall of each limiting groove is fixedly connected with a pure iron sheet, one end of the second hydraulic cylinder is fixedly connected with an electromagnet, and the energized part of the electromagnet is fixedly connected with a power-on wire, the surface of the electromagnet is matched with the inner wall of the limiting groove, and the contact between the power-on wire and the electromagnet does not affect the electromagnetic connection between the two.

[0017] Preferably, the fixing part also includes a fixing groove symmetrically opened on the upper surface of the fixing block, the inner wall of the fixing groove is adapted to the lower end of the third hydraulic cylinder, an annular groove is opened on the outer side of the fixing groove, a fixing ring is fixedly connected between the inner top wall and the lower bottom wall of the annular groove, the fixing ring divides the annular groove into an inner groove and an outer groove, the surface of the fixing ring is opened with steel ball holes in a circular array around the center of the fixing groove, one end of the steel ball hole passes through the ring body of the fixing ring and extends to the outer groove of the annular groove, the other end of the steel ball hole passes through the inner wall of the fixing groove, a steel ball is placed in the steel ball hole, the diameter of the steel ball ball is larger than the diameter of the hole formed by the two ends of the steel ball hole respectively passing through, the outer surface of the fixing ring is slidably connected to a limiting ring up and down, the upper end of the limiting ring is fixedly connected to a first spring, the upper end of the first spring is fixedly connected to the inner top wall of the annular groove, and the surface of the first spring is slidably sleeved with the surface of the limiting ring.

[0018] Preferably, the lower end of the limit ring is symmetrically fixedly connected with a connecting column, the surface of the connecting column is slidably connected to the block body of the fixed block, and a spring groove adapted to the connecting column is symmetrically opened inside the block body of the fixed block located below the annular groove, a second spring is arranged inside the spring groove, the surface of the second spring is fixedly sleeved with the surface of the connecting column, and cylinder grooves corresponding to the two fixed grooves are symmetrically arranged at the opposite end of the fixed block, a double-headed cylinder is respectively fixedly connected to the inner wall of each of the cylinder grooves, the lower end of each of the connecting columns is located in the cylinder groove, the two piston rods of the double-headed cylinder are respectively slidably connected to the lower ends of the two connecting columns, the lower end of each of the connecting columns is arranged as an inclined surface, and each piston rod of the double-headed cylinder is respectively adapted to the lower end of the connecting column.

[0019] Preferably, the lifting mechanism includes a mast, the upper end of the mast is fixedly connected to an anchor plate, the upper end of the anchor plate is fixedly connected to a winch, the surface of the traction rope of the winch is slidably connected to the side of the anchor plate through a fixed pulley, a lifting hook is provided on one side of the anchor plate, the upper end of the mast is divided into two, and the lower end of the upper half of the mast is rotatably connected to the upper end of the lower half of the mast through a second hydraulic turntable.

[0020] Preferably, placers are symmetrically arranged with the mast as the central axis, the lower end of each placer is slidably connected to the upper surface of the base through a slide rail, a fourth hydraulic cylinder is fixedly connected to one side of each placer, and the cylinder body of each fourth hydraulic cylinder is fixedly connected to the upper surface of the base, a vibratory hammer and a diesel pile hammer are respectively placed inside the two placers, and the interiors of the two placers are respectively adapted to the surfaces of the vibratory hammer and the diesel pile hammer.

[0021] Preferably, a vibrating hammer is placed inside one of the placers, and the inside of the placer is matched with the surface of the vibrating hammer.

[0022] Preferably, a diesel pile hammer is placed inside another of the placing devices, and the interior of the placing device is adapted to the surface of the diesel pile hammer.

[0023] The beneficial effects of the present invention are:

[0024] By setting up hydraulic static piling technology, the energy consumption and environmental impact during the construction process are effectively reduced, and noise and vibration are reduced; the setting of the guide column, the second guide column and the guide block ensures high precision during the pile implantation process, improves the project quality, and avoids damage to the equipment caused by accidental impact with the pile body; the above-mentioned equipment integrates multiple piling modes such as hammering, vibration, and static pressure. The equipment can switch modes at any time during the construction process according to geological changes without the need to replace the equipment, saving time and cost, and improving construction efficiency. At the same time, it can meet the construction needs of different types of projects, broaden the application range of the equipment, and improve the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a construction method of an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0026] Figure 2 A front view of a construction method for an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0027] Figure 3 The invention provides a construction method for an environmentally friendly high-strength prefabricated concrete pipe pile. Figure 2 The enlarged view of point A in the middle;

[0028] Figure 4 A three-dimensional diagram of a pile-pressing mechanism for a construction method of an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0029] Figure 5 A cross-sectional view of a connection plate of a construction method for an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0030] Figure 6 An exploded view of the fixing part of the construction method of an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0031] Figure 7 A diagram showing the relationship between the positions of the electromagnets in the construction method of an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0032] Figure 8 A three-dimensional diagram of a third hydraulic cylinder of a construction method for an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0033] Fig. 9 A cross-sectional view of a fixing block of a construction method for an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0034] Fig.10 A top view of a fixing block of a construction method for an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0035] Fig.11 A bottom view of a fixing block of a construction method for an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0036] Fig.12 A front view of a fixing block of a construction method for an environmentally friendly high-strength precast concrete pipe pile proposed by the present invention;

[0037] Fig.13 The present invention provides a top view of an environmentally friendly high-strength precast concrete pipe pile construction method.

[0038] In the figure: 1, base; 2, pile pressing mechanism; 21, first hydraulic cylinder; 22, connecting plate; 23, hydraulic lifting cylinder; 24, hydraulic turntable; 25, guide column; 26, second bearing; 27, second guide column; 28, guide block; 29, static pressure member; 291, placement groove; 292, second hydraulic cylinder; 293, fixing part; 2930, fixing block; 2931, fixing groove; 2932, annular groove; 2933, fixing ring; 2934, steel ball; 2935, limit ring; 2936, first spring; 29 37. Connecting column; 2938. Second spring; 2939. Double-headed cylinder; 294. Third hydraulic cylinder; 295. N-type frame; 296. Rubber gasket; 297. Electromagnet; 298. Electric wire; 210. Cable trough; 211. Cylinder; 3. Lifting mechanism; 31. Mast; 32. Anchor plate; 33. Winch; 34. Second hydraulic turntable; 35. Lifting hook; 36. Diesel pile hammer; 4. Placer; 5. Vibratory hammer; 6. Fourth hydraulic cylinder; 7. Geological radar; 8. Controller; 9. PHC pile. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Reference Figure 1-Figure 13 A construction method of an environmentally friendly high-strength precast concrete pipe pile comprises the following steps:

[0041] Step 1: Before construction, conduct a detailed survey of the construction site using geological radar 7 to determine underground obstacles and geological conditions, formulate a drilling and pile planting plan based on the geological report, and select a suitable drill bit and pile type;

[0042] Step 2: Drilling rig in place: Position the multifunctional rotary drilling rig at the designed pile position and start the frequency conversion control system to drill;

[0043] Hole drilling process: adjust the drilling speed and torque according to the geological conditions to ensure the stability of the formation during the drilling process and avoid the occurrence of hole collapse and deviation. The intelligent monitoring system monitors the hole depth, hole diameter and geological conditions in real time and automatically adjusts the drilling parameters;

[0044] Hole forming inspection: After the hole is formed, special equipment is used to inspect the hole depth and diameter to ensure that it meets the design requirements;

[0045] Step 3: Preparation for pile driving: Move the pile driving equipment to the position where pile driving is required through its own moving mechanism. After moving to the designated position, the equipment performs fine position adjustment to ensure the accuracy of subsequent pile driving. The controller 8 fixed on the base 1 of the pile driving equipment controls the hydraulic lifting cylinder 23 carried by the pile driving equipment to extend until the lower end of the hydraulic lifting cylinder 23 contacts the ground. Then, the height of each hydraulic lifting cylinder 23 is finely adjusted to ensure that the pile driving equipment remains stable. Then, the controller 8 controls the pile driving mechanisms 2 retracted on both sides of the base 1 to open to the maximum angle respectively, and the two pile driving mechanisms 2 are parallel. Then, the controller 8 controls the lifting mechanism 3 to be perpendicular to the base 1. At this point, the preparatory work before pile driving is completed.

[0046] Pile preparation: transport the PHC pile 9 to the site and place it in front of the pile-pressing mechanism 2. The distance between the two uppermost points of the PHC pile 9 and the lifting mechanism 3 should be within the maximum length of the traction rope of the lifting mechanism 3. Check the quality of the pile to ensure that there are no cracks or damage.

[0047] Pile positioning: the controller 8 controls the lengthening of the traction rope, and fixes the traction rope to one end of the PHC pile 9 manually. The lifting mechanism 3 moves one end of the PHC pile 9 to one side of the pile pressing mechanism 2. The PHC pile 9 is pulled up by the lifting mechanism 3 through the pile pressing mechanism 2 and is in a vertical state. The lifting mechanism 3 slowly lowers the PHC pile 9 to the top of the hole.

[0048] Hydraulic static pressing: Start the hydraulic static pile planting system, the pile pressing mechanism 2 and the lifting mechanism 3, slowly and evenly press the pile body into the hole, the pile pressing mechanism 2 continues to press the pile, and the pressing force and displacement are monitored in real time to ensure that the PHC pile 9 is implanted in place according to the design requirements.

[0049] In this embodiment, each pile driving mechanism 2 includes a first hydraulic cylinder 21, a connecting plate 22 is fixedly connected to the surface of the first hydraulic cylinder 21, a hydraulic rotary plate 24 is fixedly connected to the upper end of the hydraulic lifting cylinder 23, and the upper end of the hydraulic rotary plate 24 is rotatably connected to one end of the connecting plate 22 through a bearing. A first bearing is fixedly connected to one side of the plate body of the connecting plate 22, and a guide column 25 is fixedly connected to the inner ring of the first bearing. One end of the guide column 25 is rotatably connected to the plate body of the other side of the connecting plate 22 through the first bearing. A rotating groove is provided on the plate body of the connecting plate 22 on the inner side, and a second bearing 26 is symmetrically fixedly connected along the central axis of the inner wall of the rotating groove. A second guide column 27 is provided between the two second bearings 26, and the two ends of the second guide column 27 are respectively fixedly connected to the inner rings of the two second bearings 26. A guide block 28 is provided on the upper surface of the connecting plate 22, and a static pressure member 29 is provided on one side of the guide block 28. A cable groove 210 is provided on the upper surface of the connecting plate 22.

[0050] Specifically, the arrangement of the hydraulic turntable 24 enables the entire pile driving mechanism 2 to shrink to a close fit with the base 1 when not in operation, thereby reducing space occupancy; the guide column 25, the second guide column 27 and the guide block 28 facilitate guiding the traction rope of the winch 33 in the lifting mechanism 3 to directly above the sequential pile hole during the dragging of the PHC pile 9, while avoiding collision with other equipment during the dragging of the PHC pile 9, thereby causing damage to the equipment.

[0051] In this embodiment, the guide block 28 is configured to be in an arc shape, and the width between the guide blocks 28 of the two pile-pressing mechanisms 2 is 1 cm larger than the outer diameter of the PHC pile 9 .

[0052] Specifically, when the PHC pile 9 is moved near the pile-pressing mechanism 2, the arc-shaped guide block 28 can provide a natural guide path for the PHC pile 9, making it easier for the PHC pile 9 to enter the area between the two guide blocks 28. This design reduces the adjustment time of the PHC pile 9 during the positioning process and improves the construction efficiency. In actual production, the diameter of the PHC pile 9 may have a certain deviation. If the width between the guide blocks 28 is completely equal to the diameter of the PHC pile 9, the PHC pile 9 may not be able to enter the pile-pressing position because the diameter is slightly larger. The slightly larger width can adapt to this error, improving the versatility of the pile-pressing mechanism 2.

[0053] In this embodiment, the static pressure member 29 includes a placement groove 291, one side of the placement groove 291 extends to the outside of the connecting plate 22, the inner top wall of the placement groove 291 is fixedly connected to the lower bottom wall of the cable groove 210, and two second hydraulic cylinders 292 are arranged on the inner wall of the placement groove 291, and one end of the second hydraulic cylinder 292 is fixedly connected to a fixing portion 293, and the fixing portion 293 includes a semicircular fixing block 2930, and the upper surface and the lower surface of the fixing block 2930 are respectively slidably connected to the upper inner wall and the lower inner wall of the placement groove 291, and the upper surface of the fixing block 2930 is axially symmetrically connected to the third hydraulic cylinder 294, and the upper end of the connecting plate 22 is fixedly connected to an n-shaped frame 295, and the lower end of the n-shaped frame 295 is connected to the connecting plate The upper surface of 22 is slidably connected by a slide rail, the surfaces of the n-shaped frame 295 are fixedly connected to the cylinder body surfaces of the two third hydraulic cylinders 294 respectively, a semicircular groove adapted to the outer surface of the PHC pile 9 is opened at the center of the fixed block 2930, a rubber gasket 296 is fixedly set on the surface of the semicircular groove, and a limiting groove is symmetrically opened on the side axis of the fixed block 2930, and a pure iron sheet is fixedly connected to the inner wall of each limiting groove, and an electromagnet 297 is fixedly connected to one end of the second hydraulic cylinder 292, and a power-on wire 298 is fixedly connected to the power-on part of the electromagnet 297, and the surface of the electromagnet 297 is adapted to the inner wall of the limiting groove, and the contact between the power-on wire 298 and the electromagnet 297 does not affect the electromagnetic connection between the two.

[0054] Specifically, during the pile pressing process, various hydraulic equipment and control systems need to be connected and powered by cables. By connecting the placement groove 291 with the cable groove 210, the cables can be easily introduced from the cable groove 210 into the hydraulic equipment in the placement groove 291, avoiding the disorder of the cables and reducing the risk of cable damage; the fixing part 293 includes a semicircular fixing block 2930, and the two fixing blocks 2930 can be tightly fitted on the outer surface of the PHC pile 9 under the action of the second hydraulic cylinder 292, providing stable pressure for the PHC pile 9; the n-type frame 295 can slide on the upper surface of the connecting plate 22 through the slide rail, thereby driving the third hydraulic cylinder 294 and the fixing block to move. The synergistic effect of these multiple hydraulic cylinders enables the static pressure part 29 to adapt to PHC piles 9 of different diameters, and the clamping force and static pressure can be adjusted according to actual needs, thereby improving the versatility and flexibility of the pile pressing mechanism 2; the semicircular groove opened at the center of the fixed block 2930 is compatible with the outer surface of the PHC pile 9, and can fit tightly on the surface of the PHC pile 9, thereby increasing the stability of the clamping. The setting of the rubber gasket 296 further enhances the clamping effect. The rubber has good elasticity and friction, which can prevent the pile from sliding during the clamping process, and can also reduce damage to the surface of the PHC pile 9; when the second hydraulic cylinder 292 pushes the fixed block 2930 to clamp the PHC pile 9, the electromagnet 297 is energized and adsorbed together with the pure iron sheet to prevent the fixed block 2930 from displacement or loosening during the pile pressing process, thereby ensuring the firmness of the clamping.

[0055] In this embodiment, the fixing portion 293 also includes a fixing groove 2931 symmetrically opened on the upper surface of the fixing block 2930, the inner wall of the fixing groove 2931 is adapted to the lower end of the third hydraulic cylinder 294, and an annular groove 2932 is opened on the outer side of the fixing groove 2931. A fixing ring 2933 is fixedly connected between the inner top wall and the lower bottom wall of the annular groove 2932. The fixing ring 2933 divides the annular groove 2932 into an inner groove and an outer groove. The surface of the fixing ring 2933 is provided with a steel groove array around the center of the fixing groove 2931. The steel ball hole has one end that penetrates the ring body of the fixing ring 2933 and extends to the outer groove of the annular groove 2932, and the other end of the steel ball hole penetrates the inner wall of the fixing groove 2931. A steel ball 2934 is placed in the steel ball hole. The diameter of the steel ball 2934 is larger than the diameter of the hole formed by the two ends of the steel ball hole. The outer surface of the fixing ring 2933 is slidably connected to the limit ring 2935 up and down. The upper end of the limit ring 2935 is fixedly connected to the first spring 2936. The upper end of the first spring 2936 is connected to the inner wall of the annular groove 2932. The top wall is fixedly connected, and the surface of the first spring 2936 is slidably sleeved with the surface of the limiting ring 2935; the lower end of the limiting ring 2935 is symmetrically fixedly connected with a connecting column 2937, and the surface of the connecting column 2937 is slidably connected to the block body of the fixed block 2930, and the block body of the fixed block 2930 located below the annular groove 2932 is symmetrically provided with a spring groove adapted to the connecting column 2937, and a second spring 2938 is arranged inside the spring groove, and the surface of the second spring 2938 is slidably sleeved with the surface of the connecting column 2937. The surface is fixedly sleeved, and the opposite end of the fixed block 2930 is symmetrically provided with cylinder grooves corresponding to the two fixed grooves 2931. The inner wall of each cylinder groove is fixedly connected with a double-headed cylinder 2939, and the lower end of each connecting column 2937 is located in the cylinder groove. The two piston rods of the double-headed cylinder 2939 are respectively slidably connected to the lower ends of the two connecting columns 2937, and the lower end of each connecting column 2937 is set as an inclined surface, and each piston rod of the double-headed cylinder 2939 is respectively adapted to the lower end of the connecting column 2937.

[0056] Specifically, through the arrangement of the above structure, when the lower end of the third hydraulic cylinder 294 enters the fixed groove 2931, the piston rod of the double-headed cylinder 2939 extends to squeeze the lower end of the connecting column 2937, and the limiting ring 2935 is subjected to the upward force of the connecting column 2937 to squeeze the first spring 2936. The first spring 2936 shrinks to the extreme. At this time, the lower end of the third hydraulic cylinder 294 squeezes the steel ball 2934 exposed in the fixed groove 2931, and the squeezed steel ball 2934 moves toward the outside. The lower end of the third hydraulic cylinder 294 enters the fixed groove 2931 normally, and then the double-headed cylinder 2939 returns to its original state, and the limiting ring 2935 quickly returns to its original state under the action of the first spring 2936. The inner wall of the limiting ring 2935 squeezes the steel ball 2934, and the steel ball 2934 moves toward the lower end of the third hydraulic cylinder 294 and is in contact with the third hydraulic cylinder. The lower end of the pressure cylinder 294 is clamped, and the electromagnet 297 is powered off. The second hydraulic cylinder 292 drives the electromagnet 297 to leave, so that the electromagnet 297 does not contact the side of the fixed block 2930. The lower end of the third hydraulic cylinder 294 continues to extend to complete the static pressure implantation of the PHC pile 9. The PHC pile 9 descends in the hole. When the third hydraulic cylinder 294 can no longer continue to extend, the cylinder 211 drives the n-type frame 295 to slide two centimeters on the surface of the connecting plate 22. The third hydraulic cylinder 294 drives the fixed part 293 to rise, and the cylinder 211 pushes the n-type frame 295 close to the PHC pile 9 again until the two fixed parts 293 complete the extrusion of the surface of the PHC pile 9 and the extrusion force reaches the specified value, and the static pressure implantation continues. At the same time, the setting of the above structure facilitates the rapid docking and separation between the third hydraulic cylinder 294 and the fixed block 2930 each time the static pressure implantation is performed, thereby improving the efficiency of the static pressure implantation.

[0057] In this embodiment, the lifting mechanism 3 includes a mast 31, the upper end of the mast 31 is fixedly connected to a hanging anchor plate 32, the upper end of the hanging anchor plate 32 is fixedly connected to a winch 33, the surface of the traction rope of the winch 33 is slidingly connected to the side of the hanging anchor plate 32 through a fixed pulley, a lifting hook 35 is provided on one side of the hanging anchor plate 32, the upper end of the mast 31 is divided into two, and the lower end of the upper half of the mast 31 is rotatably connected to the upper end of the lower half of the mast 31 through a second hydraulic turntable 34.

[0058] The placers 4 are symmetrically arranged with the mast 31 as the central axis. The lower end of each placer 4 is slidably connected to the upper surface of the base 1 through a slide rail. A fourth hydraulic cylinder 6 is fixedly connected to one side of each placer 4. The cylinder body of each fourth hydraulic cylinder 6 is fixedly connected to the upper surface of the base 1. A vibratory hammer 5 and a diesel pile hammer 36 are respectively placed inside the two placers 4, and the interiors of the two placers 4 are respectively adapted to the surfaces of the vibratory hammer 5 and the surfaces of the diesel pile hammer 36.

[0059] A vibrating hammer 5 is placed inside one of the placing devices 4 , and the inside of the placing device 4 is matched with the surface of the vibrating hammer 5 .

[0060] A diesel pile hammer 36 is placed inside the other placing device 4 , and the interior of the placing device 4 is adapted to the surface of the diesel pile hammer 36 .

[0061] The mast 31 of the lifting mechanism 3 is selected to be equipped with a manipulator for assisting the PHC pile 9 to be perpendicular to the hole. The mast 31 carrying the manipulator belongs to the existing pile planting technology and will not be described in detail. The PHC pile 9 is lifted to a height perpendicular to the hole-forming position by the traction rope of the winch 33. The manipulator fixes the surface of the PHC pile 9, and then pushes the fixing block 2930 out of the placement groove 291 through the second hydraulic cylinder 292 until it contacts the surface of the vertical PHC pile 9. The squeezing force of the second hydraulic cylinder 292 on the surface of the PHC pile 9 is appropriately adjusted according to the data transmitted by the pressure sensor embedded in the rubber gasket 296.

[0062] Embodiment 1 After the static pressure pile planting mode is changed to the pile driving pile planting mode, before the next PHC pile 9 is planted, the second hydraulic turntable 34 is controlled to drive the upper mast 31 to rotate ninety degrees. At this time, one of the fourth hydraulic cylinders 6 pushes the placement device 4 with the diesel pile hammer 36 to move on the upper surface of the base 1 until the placement device 4 moves to the bottom of the lifting hook 35 after rotating ninety degrees. The lifting hook 35 slowly descends under the control of the controller 8 to lift the diesel pile hammer 36 away from the placement device 4 adapted thereto. Then the second hydraulic turntable 34 rotates ninety degrees to restore to its original state. Then, the traction rope of the winch 33 is used to fix one end of the PHC pile 9 under manual cooperation. The winch 33 completes the lifting of the PHC pile 9. With the cooperation of the manipulator of the mast 31, the diesel pile hammer 36 hits the upper end of the PHC pile 9.

[0063] In the second embodiment, after the static pressure pile planting mode is changed to the vibration pile planting mode, before the next PHC pile 9 is planted, the second hydraulic turntable 34 is controlled to drive the mast 31 of the upper part thereof to rotate ninety degrees. At this time, another fourth hydraulic cylinder 6 pushes the placement device 4 on which the vibration hammer 5 is placed to move on the upper surface of the base 1 until the placement device 4 moves to the bottom of the lifting hook 35 after rotating ninety degrees. The lifting hook 35 slowly descends under the control of the controller 8, and lifts the vibration hammer 5 away from the placement device 4 adapted thereto. Then, the second hydraulic turntable 34 rotates ninety degrees to restore its original state. Then, the traction rope of the winch 33 is used to fix one end of the PHC pile 9 under manual cooperation. The winch 33 completes the lifting of the PHC pile 9. With the cooperation of the manipulator at the lower end of the mast 31, the vibration hammer 5 performs vibration implantation on the upper end of the PHC pile 9.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A construction method for environmentally friendly high-strength precast concrete pipe piles, characterized in that: The steps include: Step 1: Before construction, conduct a detailed survey of the construction site using geological radar (7) to determine underground obstacles and geological conditions, formulate a drilling and pile planting plan based on the geological report, and select a suitable drill bit and pile type; Step 2: Drilling rig in place: Position the multifunctional rotary drilling rig at the designed pile position and start the frequency conversion control system to drill; Hole drilling process: adjust the drilling speed and torque according to the geological conditions to ensure the stability of the formation during the drilling process, avoid the occurrence of hole collapse and deviation, and monitor the hole depth, hole diameter and geological conditions in real time through the intelligent monitoring system to automatically adjust the drilling parameters; Hole forming inspection: After the hole is formed, special equipment is used to inspect the hole depth and diameter to ensure that it meets the design requirements; Step 3, preparation for pile driving: the pile driving device is moved to the position where pile driving is required through its own moving mechanism. After moving to the designated position, the device is fine-tuned to ensure the accuracy of subsequent pile driving. The hydraulic lifting cylinder (23) carried by the pile driving device is controlled to extend by the controller (8) fixed on the base (1) of the pile driving device until the lower end of the hydraulic lifting cylinder (23) contacts the ground. Subsequently, the height of each hydraulic lifting cylinder (23) is fine-tuned to ensure that the pile driving device remains stable. Then, the controller (8) controls the pile driving mechanisms (2) retracted on both sides of the base (1) to open to the maximum angle respectively, and the two pile driving mechanisms (2) are parallel. Then, the controller (8) controls the lifting mechanism (3) to be perpendicular to the base (1). At this point, the preparatory work before pile driving is completed. Pile preparation: transport the PHC pile (9) to the site and place it in front of the pile-pressing mechanism (2). The distance between the two uppermost points of the PHC pile (9) and the lifting mechanism (3) is controlled within the maximum length of the traction rope of the lifting mechanism (3). Check the quality of the pile to ensure that there are no cracks or damage. Pile body positioning: the controller (8) controls the lengthening of the traction rope, and the traction rope is manually fixed to one end of the PHC pile (9), and the lifting mechanism (3) moves one end of the PHC pile (9) toward one side of the pile pressing mechanism (2). The PHC pile (9) is pulled up by the lifting mechanism (3) through the pile pressing mechanism (2) and is positioned in a vertical state. The lifting mechanism (3) slowly lowers the PHC pile (9) to the top of the hole. Hydraulic static pressing: Start the hydraulic static pile planting system, the pile pressing mechanism (2) and the lifting mechanism (3), slowly and evenly press the pile body into the hole, the pile pressing mechanism (2) continuously presses the pile, and monitors the pressing force and displacement in real time to ensure that the PHC pile (9) is planted in place according to the design requirements.

2. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 1 is characterized in that: Each of the pile-pressing mechanisms (2) comprises a first hydraulic cylinder (21), a surface of the first hydraulic cylinder (21) being fixedly connected to a connecting plate (22), an upper end of the hydraulic lifting cylinder (23) being fixedly connected to a hydraulic rotary plate (24), an upper end of the hydraulic rotary plate (24) being rotatably connected to one end of the connecting plate (22) via a bearing, a first bearing being fixedly connected to one side of a plate body of the connecting plate (22), an inner ring of the first bearing being fixedly connected to a guide column (25), one end of the guide column (25) being connected to the other end of the connecting plate (22) via the first bearing. The side plates are rotatably connected, a rotation groove is provided on the plate body on the inner side of the connecting plate (22), a second bearing (26) is symmetrically fixedly connected along the central axis of the inner wall of the rotation groove, a second guide column (27) is provided between the two second bearings (26), and the two ends of the second guide column (27) are respectively fixedly connected to the inner rings of the two second bearings (26), a guide block (28) is provided on the upper surface of the connecting plate (22), a static pressure piece (29) is provided on one side of the guide block (28), and a cable groove (210) is provided on the upper surface of the connecting plate (22).

3. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 2 is characterized in that: The guide block (28) is configured to be in the shape of an arc surface, and the width between the guide blocks (28) of the two pile-pressing mechanisms (2) is 1 cm larger than the outer diameter of the PHC pile (9).

4. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 3 is characterized in that: The static pressure member (29) comprises a placement groove (291), one side of which extends to the outside of the connecting plate (22), the inner top wall of the placement groove (291) is fixedly connected to the lower bottom wall of the cable groove (210), and the inner wall of the placement groove (291) is provided with two second hydraulic cylinders (292), one end of the second hydraulic cylinder (292) is fixedly connected to a fixing part (293), and the fixing part (293) comprises a semicircular fixing block (2930), the upper surface and the lower surface of the fixed block (2930) are respectively slidably connected to the upper inner wall and the lower inner wall of the placement groove (291), the upper surface of the fixed block (2930) is axially symmetrically movably connected with a third hydraulic cylinder (294), the upper end of the connecting plate (22) is fixedly connected to an n-shaped frame (295), the lower end of the n-shaped frame (295) is slidably connected to the upper surface of the connecting plate (22) via a slide rail, and the two ends of the n-shaped frame (295) are The surfaces of the two ends are fixedly connected with cylinders (211), the cylinder body of the cylinder (211) is fixedly connected to the upper surface of the connecting plate (22), the surface of the n-shaped frame (295) is fixedly connected to the cylinder body surfaces of the two third hydraulic cylinders (294), a semicircular groove matching the outer surface of the PHC pile (9) is provided at the center of the fixed block (2930), a rubber gasket (296) is fixedly arranged on the surface of the semicircular groove, and a limiting groove is symmetrically provided on the side of the fixed block (2930), and a pure iron sheet is fixedly connected to the inner wall of each limiting groove, one end of the second hydraulic cylinder (292) is fixedly connected with an electromagnet (297), the energized part of the electromagnet (297) is fixedly connected with an energized wire (298), the surface of the electromagnet (297) is matched with the inner wall of the limiting groove, and the contact between the energized wire (298) and the electromagnet (297) does not affect the electromagnetic connection between the two.

5. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 4 is characterized in that: The fixing portion (293) further comprises a fixing groove (2931) symmetrically arranged on the upper surface of the fixing block (2930), the inner wall of the fixing groove (2931) being adapted to the lower end of the third hydraulic cylinder (294), an annular groove (2932) being arranged on the outer side of the fixing groove (2931), a fixing ring (2933) being fixedly connected between the inner top wall and the lower bottom wall of the annular groove (2932), the fixing ring (2933) dividing the annular groove (2932) into an inner groove and an outer groove, the surface of the fixing ring (2933) being arranged with steel ball holes in an array around the center of the fixing groove (2931), one end of the steel ball hole passing through the fixing ring (2933) The ring body extends to the outer groove of the annular groove (2932), the other end of the steel ball hole penetrates the inner wall of the fixed groove (2931), and a steel ball (2934) is placed in the steel ball hole. The diameter of the steel ball (2934) is larger than the diameter of the hole formed by the two ends of the steel ball hole. The outer surface of the fixed ring (2933) is slidably connected to a limit ring (2935) up and down, and the upper end of the limit ring (2935) is fixedly connected to a first spring (2936), the upper end of the first spring (2936) is fixedly connected to the inner top wall of the annular groove (2932), and the surface of the first spring (2936) is slidably sleeved with the surface of the limit ring (2935).

6. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 5 is characterized in that: The lower end of the limiting ring (2935) is symmetrically fixedly connected with a connecting column (2937), the surface of the connecting column (2937) is slidably connected with the block body of the fixing block (2930), and the block body of the fixing block (2930) located below the annular groove (2932) is symmetrically provided with a spring groove adapted to the connecting column (2937), and a second spring (2938) is arranged inside the spring groove, and the surface of the second spring (2938) is fixedly sleeved with the surface of the connecting column (2937), and the fixing block (2930) is symmetrically provided with a spring groove adapted to the connecting column (2937). ) are symmetrically arranged at the opposite ends thereof with cylinder grooves corresponding to the two fixed grooves (2931), the inner wall of each of the cylinder grooves is fixedly connected with a double-headed cylinder (2939), the lower end of each of the connecting columns (2937) is located in the cylinder groove, the two piston rods of the double-headed cylinder (2939) are respectively slidably connected to the lower ends of the two connecting columns (2937), the lower end of each of the connecting columns (2937) is arranged as an inclined surface, and each piston rod of the double-headed cylinder (2939) is respectively adapted to the lower end of the connecting column (2937).

7. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 6 is characterized in that: The lifting mechanism (3) comprises a mast (31), the upper end of the mast (31) is fixedly connected to an anchor plate (32), the upper end of the anchor plate (32) is fixedly connected to a winch (33), the surface of a traction rope of the winch (33) is slidably connected to the side of the anchor plate (32) via a fixed pulley, a lifting hook (35) is provided on one side of the anchor plate (32), the upper end of the mast (31) is divided into two, and the lower end of the upper half of the mast (31) is rotatably connected to the upper end of the lower half of the mast (31) via a second hydraulic turntable (34).

8. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 7 is characterized in that: The placing devices (4) are symmetrically arranged with the mast (31) as the central axis. The lower end of each of the placing devices (4) is slidably connected to the upper surface of the base (1) through a slide rail. A fourth hydraulic cylinder (6) is fixedly connected to one side of each of the placing devices (4). The cylinder body of each of the fourth hydraulic cylinders (6) is fixedly connected to the upper surface of the base (1). A vibrating hammer (5) and a diesel pile hammer (36) are respectively placed inside the two placing devices (4). The interiors of the two placing devices (4) are respectively adapted to the surfaces of the vibrating hammer (5) and the surfaces of the diesel pile hammer (36).

9. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 8, characterized in that: A vibrating hammer (5) is placed inside one of the placing devices (4), and the inside of the placing device (4) is adapted to the surface of the vibrating hammer (5).

10. The construction method of an environmentally friendly high-strength precast concrete pipe pile according to claim 8, characterized in that: A diesel pile hammer (36) is placed inside the other placement device (4), and the interior of the placement device (4) is adapted to the surface of the diesel pile hammer (36).

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