Anti-seismic construction device and method for ultrahigh-strength concrete pipe pile

Abstract

The invention discloses an anti-seismic construction device for an ultrahigh-strength concrete pipe pile. The anti-seismic construction device comprises a supporting frame mechanism, a pile grooving mechanism and a pipe pile sinking mechanism. The support frame mechanism comprises a bottom support frame, a vertical support steel plate and a top steel plate; the pile grooving mechanism comprises a grooving rod assembly, a rod rotating assembly, a mounting assembly of the rod rotating assembly and a lifting assembly. The pipe pile sinking mechanism comprises an impact block, a block movable limiting rod and an impact block hoisting assembly. The construction method comprises the following steps that 1, firstly, the pile grooving mechanism is used for deeply digging and grooving; 2, sinking the pipe pile section by section by using a pipe pile sinking mechanism, and impacting to sink; 3, a reinforcement cage is arranged below, concrete grout is injected, and solidification is waited; soil is extruded into the soil retaining barrel, the soil is convenient to pull out, deep excavation is not prone to deviation, the tubular pile can permeate concrete to the outside, the multiple protrusions are formed on the outer wall of the tubular pile, friction between the tubular pile and the soil is easily increased, and the tubular pile is not prone to falling down.

Description

Technical Field

[0001] This invention relates to the field of concrete pipe pile technology, and in particular to an anti-seismic construction device and method for ultra-high strength concrete pipe piles. Background Technology

[0002] In concrete pipe pile construction, the usual method is to first measure the pile placement point, then insert the pipe pile into the placement point and drive it in. This construction method is laborious during pile driving and prone to pipe pile displacement, affecting construction. When placing the pipe pile into the placement point, a crane is usually used. Most cranes are hook-type, which are inconvenient for fixing the pipe pile, requiring auxiliary devices such as chains for support, wasting time. When fixing pipe piles of different thicknesses, the fixation is unstable and prone to accidents. Furthermore, impacting the insertion of the pipe pile into the soil is very difficult, especially in hard soil. While pre-drilling a slot for the pipe pile and then inserting it is relatively easier, using a propeller blade to drill holes in the soil makes soil extraction difficult. When the pipe pile is long, the trench depth is also relatively deep. If a long propeller blade is used, the deeper the insertion depth, the more difficult it becomes to excavate and extract soil. If the propeller blade is only at the head, soil extraction is difficult, and the long boom is prone to swinging and bending, causing the trench to deviate. It is relatively difficult to make concrete pipe piles seismically resistant. The outer wall of the pipe pile is flat and has low friction with the soil, making it easy to lay in layers. When the ground vibrates, it transmits the vibration force relatively quickly and cannot reduce the vibration. Many pipe piles are made of multiple sections spliced ​​together, but the construction and installation of splicing are troublesome and the splicing position is not strong enough. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide an ultra-high strength concrete pipe pile seismic-resistant construction device and method, which solves problems such as difficulty in removing soil during pile trench excavation, easy subsidence of the pipe pile at the bottom, and poor seismic resistance.

[0004] An anti-seismic construction device for ultra-high strength concrete pipe piles according to the present invention includes a support frame mechanism, a pile trenching mechanism, and a pipe pile sinking mechanism;

[0005] The support frame mechanism includes a bottom support frame, a vertical support steel plate, and a top steel plate. A support beam is fixed to the bottom end of the vertical support steel plate, and the support beam is movably installed inside the bottom support frame. A top steel plate is fixed to the top of the vertical support steel plate, and the middle positions on both sides of the vertical support steel plate are installed on the front mounting frame of the piling vehicle.

[0006] The grooving mechanism includes a grooving rod assembly, a rod rotation assembly, a rod rotation assembly mounting assembly, and a lifting assembly;

[0007] The slotting rod assembly includes a slotting rod, an extension connecting rod, and a sleeve for stabilizing the connection position. A section of propeller blade is fitted onto the bottom end of the slotting rod. A mud retention bucket is fitted onto the slotting rod above the top of the propeller blade. The mud retention bucket is connected to the slotting rod via multiple connecting rods. The top end of the slotting rod is a tongue-and-groove joint. The bottom end of the extension connecting rod is a U-shaped joint, and the top end is a tongue-and-groove joint. The tongue-and-groove joint of the slotting rod and the U-shaped joint of the extension connecting rod are connected by two pins. The top end of the slotting rod and both ends of the extension connecting rod are provided with four bolt holes, which are staggered at the same end. The sleeve has four staggered bolt buckles on the upper and lower outer walls. The ends of the slotting rod and the extension connecting rod are screwed into the corresponding bolt holes from the bottom and top axial positions of the sleeve, respectively.

[0008] The rod rotation assembly includes a rotating motor, a motor mounting block, a first vertical frame, a downward lead screw, and a downward servo motor. The rotating motor is embedded in the motor mounting block and a bearing is sleeved on the motor shaft. The structure of the rotating motor shaft end is the same as the structure of the bottom end of the extension connecting rod. Two vertical limiting rods are provided on the inner side of the first vertical frame. The two sides of the motor mounting block are movably sleeved on the vertical limiting rods. A grooving lead screw is spirally passed through the middle position of the motor mounting block, and the two ends of the grooving lead screw are rotatably mounted on the two ends of the first vertical frame. A downward servo motor is provided at the top of the first vertical frame, and the shaft of the downward servo motor is connected to the top of the grooving lead screw.

[0009] The installation assembly includes a second vertical slat frame, two second vertical limiting rods, an abutment plate, an abutment screw, and an abutment motor. The bottom end of the second vertical slat frame is fixed to the left side wall of the vertical support steel plate with a fixing block, and the top end is fixed to the lower surface of the top steel plate. Two parallel second vertical limiting rods are provided at the upper and lower ends of the inner side of the second vertical slat frame. The two sides of the first vertical slat frame are movably sleeved on the two second vertical limiting rods. The upper half of the second vertical slat frame has a movable slot hole for the abutment plate in the middle. An abutment screw is vertically provided between the back of the second vertical slat frame and the vertical support steel plate, and the two ends of the abutment screw are rotatably installed. The abutment plate is spirally sleeved on the abutment screw and passes through the movable slot hole of the abutment plate and is located above the first vertical slat frame. An abutment motor is installed at the top of the abutment screw.

[0010] The lifting assembly includes a first lifting brake motor, a first wire winding reel, and a hook. The first lifting brake motor is installed on the left half of the top steel plate, and the first wire winding reel is sleeved on the shaft of the first lifting brake motor. The end of the wire wound on the first wire winding reel is attached to the hook. The wire moves through the top steel plate below the position of the first wire winding reel.

[0011] The pipe pile sinking mechanism includes an impact block, a block movable limit rod, and an impact block lifting assembly. Two mounting blocks are symmetrically arranged on the right side of the vertical support steel plate near the top and bottom, and a block movable limit rod connects the corresponding mounting blocks. Sleeve blocks are symmetrically arranged in the middle of both sides of the impact block, and the sleeve blocks are movably fitted onto the block movable limit rods. The impact block lifting assembly includes a second lifting brake motor and a second wire winding reel. The second wire winding reel is fitted onto the shaft of the second lifting brake motor. The wire wound on the second wire winding reel moves through the vertical support steel plate below the second wire winding reel and is tied to the top of the impact block.

[0012] In some embodiments of the present invention, the length of the slotting rod is equal to that of the extension connecting rod, and the length of the downward lead screw is not less than the length of the slotting rod.

[0013] In other embodiments of the present invention, the length of the two second vertical limiting rods on the second vertical frame is not less than the depth of the pile groove.

[0014] In some other embodiments of the present invention, the diameter of the cylindrical shape formed by the rotation of the propeller blades is 2-3 cm larger than the outer diameter of the mud retention bucket.

[0015] In other embodiments of the present invention, the bottom of the impact block is provided with an impact rubber pad, and the two sides of the impact block near the bottom are symmetrically provided with hanging rings.

[0016] In other embodiments of the present invention, the bottom support frame includes two main support plates, a secondary connecting plate connecting the two ends of the main support plates, and a limiting inverted U-shaped plate. The limiting inverted U-shaped plates are fixedly fastened to the two main support plates. The two ends of the support beam are inserted into the limiting inverted U-shaped plates. Three sets of positioning bolt holes are provided between the main support plates and the corresponding limiting inverted U-shaped plates. Holes matching the positioning bolt holes are provided on both ends of the support beam.

[0017] In other embodiments of the present invention, the ultra-high strength concrete pipe pile constructed by the construction device includes a bottom concrete pipe pile and multiple sections of butt-jointed concrete pipe piles. The bottom end of the bottom concrete pipe pile is frustum-shaped. The bottom concrete pipe pile and the butt-jointed concrete pipe pile are provided with an inner steel sleeve. The bottom concrete pipe pile does not have an inner steel sleeve near the top, but is covered with an outer steel sleeve. The structure of the butt-jointed concrete pipe pile is the same as the top structure of the bottom concrete pipe pile near the top, but the inner steel sleeve extends downward at the bottom end. The outer steel sleeve is provided with multiple first through bolt holes. The butt-jointed concrete pipe pile is provided with second through bolt holes that match the first through bolt holes at the bottom end where it extends downward at the inner steel sleeve.

[0018] The bottom concrete pipe pile and the multi-section butt-jointed concrete pipe pile Z2 are provided with multiple extension columns around the bottom end, and multiple leakage strip holes are provided on the side wall of the bottom concrete pipe pile or the multi-section butt-jointed concrete pipe pile Z2 above the extension columns.

[0019] A construction method for an ultra-high strength concrete pipe pile seismic-resistant construction device, using the aforementioned construction device, with the specific construction steps as follows:

[0020] S1: Move the entire construction device of the pile driver to the position where the pipe pile needs to be driven, press the bottom support frame on the ground and adjust it to be level. The pile trench needs to be driven first. At this time, adjust the position of the support beam at the bottom end of the vertical support steel plate on the bottom support frame and fix it, and ensure that the rotating motor in the rod rotating assembly is directly above the pile trench. First, use the downward servo motor to move the motor mounting block to the top. Take a drilling rod and insert the propeller blade at the bottom end into the pile trench position on the ground and place it vertically. Put a sleeve on the top of the drilling rod. Then, connect the connecting structure on the rotating motor shaft to the tongue connector at the top of the drilling rod and connect it with a pin. Push the sleeve up and use a bolt to screw into the corresponding bolt hole from the bolt thread to install the sleeve.

[0021] S2: During the initial deep excavation of the pile driving trench, the rotating motor rotates, and at the same time, the downward servo motor rotates slowly and moves downward through the downward lead screw. Combined with the downward movement of the propeller blades, synchronous downward movement is achieved. The propeller blades tangle the soil into the gaps of the propeller blades and push it upward. Since the mud retention bucket has openings at the top and bottom, the soil will be pushed into the mud retention bucket. Based on experience, ensure that the mud retention bucket is filled with no less than 80% soil. At this time, without rotating the propeller blades, move the abutment plate to the top position, hook it onto or tie it to the sleeve below the downward servo motor, and use the first lifting brake motor to drive the first wire winding reel to wind up the wire, pulling the drilling rod upward. The soil in the mud retention bucket will not fall, making it easy to lift. After lifting the mud retention bucket, use a rod or equipment to remove the soil from the propeller blades and the mud retention bucket. Repeat the above steps S2 until it is impossible to continue excavating the pile trench using the drilling rod.

[0022] S3: When it is impossible to continue digging the pile trench using the drill rod, loosen the bolts on the sleeve and remove the fixed sleeve. Then, move the sleeve down and remove the pin at the docking position between the connecting structure on the rotating motor shaft and the tongue connector at the top of the drill rod. Then, install an extension connecting rod at the top of the drill rod and install a sleeve at the top of the extension connecting rod. Connect the top of the extension connecting rod to the connecting structure on the rotating motor shaft. Before connecting, first put on a sleeve. The sleeve extension connecting rod is installed in the same way. Then, according to step S2, dig the pile trench deeper and remove the soil. Connect the extension connecting rod as needed. After the extension connecting rod enters the pile trench, the sleeve also has the function of stabilizing the swing of the drill rod extension connecting rod and the extension connecting rod and the extension connecting rod connection position.

[0023] S4: After completing the deep excavation of the pile trench, adjust and fix the position of the extended connecting rod of the support beam on the bottom support frame, and make the extended connecting rod of the impact block directly above the pile trench. Move the concrete pipe pile and tie the top end with a steel wire and tie the steel wire below the extended connecting rod of the impact block. At this time, the impact block is at the bottom. Use the extended connecting rod of the second lifting brake motor to pull up the extended connecting rod of the impact block and lift the concrete pipe pile. The bottom end of the concrete pipe pile is inserted into the top opening of the pile trench. Due to the certain gravity of the concrete pipe pile, it will move down a certain distance, but the opening of the excavated pile trench must be smaller than the outer diameter of the concrete pipe pile. Then, by continuously releasing the impact block to impact the top of the concrete pipe pile, the concrete pipe pile gradually moves down into the pile trench.

[0024] S4: After impacting the lower concrete pipe pile, inject concrete grout into the matching steel cage inside the concrete pipe pile until it solidifies, thus completing the concrete pipe pile construction.

[0025] In other embodiments of the present invention, the ultra-high strength concrete pipe pile includes a bottom concrete pipe pile extension connecting rod and a multi-section butt-joint concrete pipe pile extension connecting rod. The bottom concrete pipe pile and the butt-joint concrete pipe pile are provided with an inner steel sleeve. The bottom concrete pipe pile does not have an inner steel sleeve near the top, but is covered with an outer steel sleeve. The butt-joint concrete pipe pile has the same structure as the top structure of the bottom concrete pipe pile near the top, but the inner steel sleeve extends downward at the bottom end. The outer steel sleeve is provided with a plurality of first through bolt holes. The butt-joint concrete pipe pile is provided with a second through bolt hole matching the first through bolt holes at the bottom end where it extends downward at the inner steel sleeve.

[0026] The bottom concrete pipe pile and the multi-section butt-jointed concrete pipe pile are provided with multiple extension columns around the bottom end, and the bottom concrete pipe pile or the multi-section butt-jointed concrete pipe pile above the extension columns are provided with multiple leakage strip holes on the side wall.

[0027] First, lower the bottom concrete pipe pile. During the process of lowering the bottom concrete pipe pile, when the top of the bottom concrete pipe pile Z1 is exposed 20-30cm above the ground, stop lowering. Then, lift the connecting concrete pipe pile and insert the inner steel sleeve of the connecting concrete pipe pile, which extends downwards a certain distance from the bottom, into the top of the bottom concrete pipe pile. Use connecting bolts to connect the first and second through bolt holes to complete the connection installation. Continue to sink until all the connecting concrete pipe piles have been sunk. Then, inject concrete grout into the matching reinforcement cage inside the entire concrete pipe pile. The concrete grout will seep out from the leakage strip holes, forming a raised retaining strip, until it solidifies.

[0028] In this invention, the propeller blades at the front end of the drilling rod are used for deep excavation, and the soil is squeezed into the mud retention bucket, making it easy to pull out. Depending on the depth of excavation, different numbers of extension connecting rods are used for deep excavation. Sleeves are used to stabilize the rods and prevent them from swinging in the trench. Moreover, the deep excavation is less prone to deviation. Multi-section pipe piles are inserted section by section by impact, and the pipe piles are firmly spliced ​​and have seismic resistance. The pipe piles have the ability to penetrate concrete to the outside, which makes multiple protrusions on the outer wall of the pipe piles, increasing the friction between the pipe piles and the soil, and making it difficult for the pipe piles to be lowered. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a structural schematic diagram of an ultra-high strength concrete pipe pile seismic construction device proposed in this invention.

[0031] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0032] Figure 3 This is a schematic diagram of the slotted rod assembly proposed in this invention.

[0033] Figure 4 This is a schematic diagram of the structure of the mud retention bucket proposed in this invention during installation.

[0034] Figure 5 This is a schematic diagram of the disassembled structure of the slotted rod assembly proposed in this invention.

[0035] Figure 6 This is a schematic diagram of the side structure of the pipe pile sinking mechanism proposed in this invention.

[0036] Figure 7 This is a schematic diagram of the bottom support frame proposed in this invention.

[0037] Figure 8 This is an enlarged structural diagram of the pipe pile proposed in this invention at the splicing position.

[0038] Figure 9 This is a schematic diagram of the bottom concrete pipe pile proposed in this invention.

[0039] In the diagram: 1. Main support plate; 11. Secondary connecting plate; 12. Limiting inverted U-shaped plate; 13. Positioning bolt hole; 2. Vertical support steel plate; 21. Support beam; 3. Top steel plate; 4. Rod rotation assembly; 41. First vertical U-shaped frame; 42. Downward servo motor; 421. Downward lead screw; 43. Motor mounting block; 44. Rotating motor; 45. Sleeve; 451. Bolt buckle; 452. Bolt; 5. Second vertical U-shaped frame Frame; 6. First lifting brake motor; 7. Abutment motor; 71. Abutment screw; 72. Abutment plate; 8. Second lifting brake motor; 9. Impact block; 90. Sleeve block; 91. Block movement limit rod; 92. Impact rubber pad; 93. Hanging ring; 10. Drilling rod; 101. Mud retention bucket; 102. Propeller blade; 103. Bolt hole; 104. Pin; 1041. Tongue joint; 1042. U-shaped joint;

[0040] Z1, bottom concrete pipe pile; Z11, inner steel sleeve; Z12, outer steel sleeve; Z13, bolt hole; Z14, extension column; Z15, leakage strip hole;

[0041] Z2, connecting concrete pipe pile; Z21, connecting inner steel sleeve; Z22, second through bolt hole; Z23, shock-absorbing rubber ring. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] like Figure 1-9 As shown, the present invention proposes an ultra-high strength concrete pipe pile seismic construction device, which includes a support frame mechanism, a pile trenching mechanism, and a pipe pile sinking mechanism.

[0044] The support frame mechanism includes a bottom support frame, a vertical support steel plate 2 and a top steel plate 3. A support beam 21 is fixed at the bottom end of the vertical support steel plate 2. The support beam 21 is movably installed in the bottom support frame. A top steel plate 3 is fixed at the top end of the vertical support steel plate 2. The middle positions on both sides of the vertical support steel plate 2 are installed on the front mounting frame of the piling vehicle.

[0045] The grooving mechanism includes a grooving rod assembly, a rod rotation assembly, a rod rotation assembly mounting assembly, and a lifting assembly;

[0046] The grooving rod assembly includes a grooving rod 10, an extension connecting rod, and a connecting position stabilizing sleeve 45. A section of propeller blade 102 is fitted onto the bottom end of the grooving rod 10. A mud trap 101 is fitted onto the grooving rod 10 above the top of the propeller blade 102. The mud trap 101 is connected to the grooving rod 10 via multiple connecting rods 1011. The top end of the grooving rod 10 is a tongue connector 1041. The bottom end of the extension connecting rod is a U-shaped connector 1042, and the top end is a tongue connector 1041. The tongue of the grooving rod 10... After the connector 1041 and the U-shaped connector 1042 of the extension connecting rod are mated, they are connected by two pins 104. The top of the slotting rod 10 and both ends of the extension connecting rod are provided with four bolt holes 103, and the four bolt holes 103 at the same end are staggered. The sleeve 45 is provided with four staggered bolt buckles 451 on the upper and lower outer walls. The ends of the slotting rod 10 and the extension connecting rod are screwed into the corresponding bolt holes from the bolt buckles 451 from the bottom and top axial positions of the sleeve 45, respectively.

[0047] Depending on the depth of the trench used for the pipe pile, several extension connecting rods are configured. The propeller blade 102 rotates as it digs deeper into the soil, causing the soil to rise (relative to the propeller blade) and be squeezed into the mud-retaining bucket 101. When the mud-retaining bucket 101 contains sufficient soil, the trenching rod 10 is pulled up (using a lifting assembly), but the propeller blade 102 is not rotated (the propeller blade prevents the soil from falling). At this point, the soil is pulled out of the trench for cleaning. The tongue connector 1041 of the trenching rod 10 is connected to the U-shaped connector 1042 of the extension connecting rod and then fixed with two pins 104 for easy installation and disassembly. A sleeve 45 (first fitted at the top and bottom, then pushed up after connection) is then placed at the connection position. The bolts are aligned with one of the bolt holes 103; aligning the other positions is relatively simple, and the bolt hole misalignment provides good stability. The sleeve 45 further increases the stability of the connection position and also prevents the rod from swinging when inserted into the trench.

[0048] The rod rotation assembly includes a rotation motor 44, a motor mounting block 43, a first vertical frame 41, a downward lead screw 421, and a downward servo motor 42. The rotation motor 44 is embedded in the motor mounting block 43 and a bearing is sleeved on the motor shaft. The structure of the end of the shaft of the rotation motor 44 is the same as the structure of the bottom of the extension connecting rod. Two vertical limiting rods are provided on the inner side of the first vertical frame 41. The two sides of the motor mounting block 43 are movably sleeved on the vertical limiting rods. A grooving lead screw 421 is spirally passed through the middle position of the motor mounting block 43, and the two ends of the grooving lead screw 421 are rotatably mounted on the two ends of the first vertical frame 41. The top of the first vertical frame 41 is provided with a downward servo motor 42, and the shaft of the downward servo motor 42 is connected to the top of the grooving lead screw 421.

[0049] During the deep drilling process, the motor mounting block 43 is pressed against the bottom and fixed. The downward servo motor 42 drives the downward lead screw 421 to rotate, which slowly moves the motor mounting block 43 downward. Combined with the slow downward movement of the propeller blade 102, the trench is drilled.

[0050] The installation assembly includes a second vertical slat frame 5, two second vertical limiting rods, an abutment plate 72, an abutment screw 71, and an abutment motor 7. The bottom of the second vertical slat frame 5 is fixed to the left side wall of the vertical support steel plate 2 with a fixing block, and the top is fixed to the lower surface of the top steel plate 3. Two parallel second vertical limiting rods are provided at the upper and lower ends of the inner side of the second vertical slat frame 5. The two sides of the first vertical slat frame 41 are movably sleeved on the two second vertical limiting rods. The upper half of the second vertical slat frame 5 is provided with an abutment plate movable strip hole 51 in the middle. An abutment screw 71 is vertically provided between the back of the second vertical slat frame 5 and the vertical support steel plate 2, and the two ends of the abutment screw 71 are rotatably installed. The abutment plate 72 is spirally sleeved on the abutment screw 71 and passes through the abutment plate movable strip hole 51 and is located above the first vertical slat frame 41. An abutment motor 7 is installed at the top of the abutment screw 71.

[0051] The abutment motor 7 drives the abutment screw 71 to rotate, causing the abutment plate 72 to move up and down. When it moves down, the first vertical sill frame 41 is abutted to prevent it from swaying or moving up. When it moves up, the first vertical sill frame 41 can move up and down when the drilling rod 10 is pulled out, making it easy to pull up the first vertical sill frame 41 with the lifting assembly, so that the drilling rod 10 can move up. The movable slot 51 limits the abutment plate 72 to prevent it from rotating.

[0052] The lifting assembly includes a first lifting brake motor 6, a first wire winding reel, and a hook. The first lifting brake motor 6 is installed on the left half of the top steel plate 3, and the first wire winding reel is sleeved on the shaft of the first lifting brake motor 6. The end of the wire wound on the first wire winding reel is attached to the hook. The wire moves through the top steel plate 3 below the position of the first wire winding reel.

[0053] The first lifting and braking motor 6 is sufficient to achieve lifting and braking, similar to an elevator motor.

[0054] The pipe pile sinking mechanism includes an impact block 9, a block movable limiting rod 91, and an impact block lifting assembly. On the right side of the vertical support steel plate 2, two mounting blocks are symmetrically arranged near the top and bottom, and the corresponding mounting blocks are connected by the block movable limiting rod 91. On both sides of the impact block 9, there are symmetrically arranged sleeve blocks 90 at the middle position. The sleeve blocks 90 are movably fitted on the block movable limiting rod 91. The impact block lifting assembly includes a second lifting brake motor 8 and a second wire winding reel. The second wire winding reel is fitted on the shaft of the second lifting brake motor 8. The wire wound on the second wire winding reel moves through the vertical support steel plate 2 below the second wire winding reel and is tied to the top of the impact block 9.

[0055] For lifting pipe piles, the impact block 9 can be lifted by using the impact block lifting assembly to lift the pipe pile. Then, it is first inserted into one end of the groove, and then the impact block 9 is lowered multiple times to impact it. Since the pipe pile is 1-5cm larger than the groove diameter, it still needs to be impacted, but it is much less laborious to impact without a groove.

[0056] The length of the grooving rod 10 is equal to that of the extension connecting rod, and the length of the lowering screw 421 is not less than the length of the grooving rod 10. The adjustable height of the lowering screw 421 is greater than that of one grooving rod 10, which facilitates grooving and upward pulling.

[0057] The length of the two second vertical limiting rods on the second vertical frame 5 is not less than the depth of the pile trench. The maximum drilling rod 10 can also be pulled out when spliced ​​with the extension connecting rod, which facilitates the cleaning of soil.

[0058] The diameter of the cylindrical shape formed by the rotating propeller blade 102 is 2-3 cm larger than the outer diameter of the mud retention bucket 101. Lowering the mud retention bucket 101 is less labor-intensive and does not affect the entry of soil into the mud retention bucket 101.

[0059] The impact block 9 has an impact rubber pad at its bottom, and hanging rings 93 are symmetrically arranged on both sides near the bottom of the impact block 9. The impact rubber pad is to prevent impact damage to the top of the pipe pile. The hanging rings 93 are for lifting the pipe pile.

[0060] The bottom support frame includes two main support plates 1, a secondary connecting plate 11 connecting the two ends of the main support plates 1, and a limiting inverted U-shaped plate 12. The limiting inverted U-shaped plates 12 are fixedly fastened on the two main support plates 1. The two ends of the support beam 21 are inserted into the limiting inverted U-shaped plates 12. Three sets of positioning bolt holes 13 are provided between the main support plates 1 and the corresponding limiting inverted U-shaped plates 12. The two ends of the support beam 21 are provided with holes that match the positioning bolt holes 13.

[0061] The main support plate 1 and the secondary connecting plate 11 are spliced ​​together to form a frame, which has high stability and a large contact area with the ground. The support beam 21 can be pulled and moved within the limiting inverted U-shaped plate 12 without falling off. After the positioning bolt hole 13 is aligned with the upper hole of the support beam 21, it can be fixed with bolts.

[0062] The ultra-high strength concrete pipe piles constructed by the construction device include a bottom concrete pipe pile Z1 and multiple sections of butt-jointed concrete pipe piles Z2. The bottom concrete pipe pile Z1 has a frustum-shaped bottom Z16. The bottom concrete pipe pile Z1 and the butt-jointed concrete pipe pile Z2 are provided with an inner steel sleeve Z11. The bottom concrete pipe pile Z1 does not have an inner steel sleeve Z11 near the top, but it is covered with an outer steel sleeve Z12. The butt-jointed concrete pipe pile Z2 has the same structure as the top of the bottom concrete pipe pile Z1 near the top, but it is connected to the inner steel sleeve Z21 at the bottom and extends downward for a distance. The outer steel sleeve Z12 is provided with multiple first through bolt holes Z13. The butt-jointed concrete pipe pile Z2 is provided with a second through bolt hole Z22 that matches the first through bolt holes Z13 at the bottom and extends downward for a distance from the inner steel sleeve Z21.

[0063] The bottom concrete pipe pile Z1 and the multi-section butt-jointed concrete pipe pile Z2 are provided with multiple extension columns Z14 around the bottom end, and multiple leakage strip holes Z15 are provided on the side wall of the bottom concrete pipe pile Z1 or the multi-section butt-jointed concrete pipe pile Z2 above the extension columns Z14.

[0064] The bottom concrete pipe pile Z1 and the multi-section butt-jointed concrete pipe pile Z2 are used to splice the pipe piles. The splicing position has a shock absorption effect. In addition, the concrete grout can seep out from the leakage strip hole Z15 to form a protrusion, which increases the friction between the outer wall of the pipe pile and the soil, making the pipe pile less prone to sinking.

[0065] A construction method for an ultra-high strength concrete pipe pile seismic-resistant construction device, using the aforementioned construction device, with the specific construction steps as follows:

[0066] S1: Move the entire construction device of the pile driver to the position where the pipe pile needs to be driven, press the bottom support frame on the ground and adjust the level. The pile trench needs to be driven first. At this time, adjust the position of the support beam 21 at the bottom end of the vertical support steel plate on the bottom support frame and fix it, and ensure that the rotating motor 44 in the rod rotating assembly is directly above the pile trench. First, use the downward servo motor 42 to move the motor mounting block 43 to the top. Take a drilling rod 10 and insert the propeller blade 102 at the bottom end into the pile trench position on the ground and place it vertically. Put a sleeve 45 on the top of the drilling rod 10. Then, connect the connecting structure on the rotating shaft of the rotating motor 44 to the tongue connector 1041 at the top of the drilling rod 10 and connect it with the pin 104. Push the sleeve 45 up and use the bolt 452 to screw into the corresponding bolt hole 103 from the bolt buckle 451 to install the sleeve 45.

[0067] S2: During the initial deep excavation of the piling trench, the rotary motor 44 rotates, and simultaneously, the downward servo motor 42 slowly rotates and is moved downward via the downward lead screw 421. Combined with the downward movement of the propeller blade 102, synchronous downward movement is achieved. The propeller blade 102 tucks soil into its gaps and pushes it upward. Because the mud retention bucket 101 has openings at both ends, soil is pushed into it. Based on experience, the mud retention bucket 101 should be filled with at least 80% soil. At this time, without rotating the propeller blade 102, move the abutment plate to the top position, hook the hook onto or tie it to the sleeve 45 below the downward servo motor 42, use the first lifting brake motor 6 to drive the first wire winding reel to wind up the wire, pull up the drilling rod 10, the soil in the mud retention bucket 101 will not fall, making it easy to lift. After lifting the mud retention bucket 101, use a rod or equipment to remove the soil from the propeller blade 102 and the mud retention bucket 101. Repeat the above steps S2 process until it is impossible to continue digging the pile trench using the drilling rod 10.

[0068] S3: When it is impossible to continue digging the pile trench using the drill rod 10, loosen the bolt 452 on the sleeve 45 and remove the fixed sleeve 45. Then, move the sleeve 45 down and remove the pin 104 at the docking position between the connecting structure on the rotating motor 44 shaft and the tongue connector 1041 at the top of the drill rod 10. Then, install an extension connecting rod at the top of the drill rod 10 and install the sleeve 45 at the top of the extension connecting rod. Connect the top of the extension connecting rod to the connecting structure on the rotating motor shaft. Before connecting, first put on a sleeve. The sleeve extension connecting rod is installed in the same way. Then, according to step S2, dig the pile trench deeper and remove the soil. Connect the extension connecting rod as needed. After the extension connecting rod enters the pile trench, the sleeve 45 also has the function of stabilizing the swing of the connection position between the drill rod 10 extension connecting rod and the extension connecting rod and the extension connecting rod.

[0069] S4: After completing the deep excavation of the pile trench, adjust and fix the position of the extended connecting rod of the support beam on the bottom support frame, and make the extended connecting rod of the impact block directly above the pile trench. Move the concrete pipe pile and tie the top end with a steel wire and tie the steel wire below the extended connecting rod of the impact block. At this time, the impact block is at the bottom. Use the extended connecting rod of the second lifting brake motor to pull up the extended connecting rod of the impact block and lift the concrete pipe pile. The bottom end of the concrete pipe pile is inserted into the top opening of the pile trench. Due to the certain gravity of the concrete pipe pile, it will move down a certain distance, but the opening of the excavated pile trench must be smaller than the outer diameter of the concrete pipe pile. Then, by continuously releasing the impact block to impact the top of the concrete pipe pile, the concrete pipe pile gradually moves down into the pile trench.

[0070] S4: After impacting the lower concrete pipe pile, inject concrete grout into the matching steel cage inside the concrete pipe pile until it solidifies, thus completing the concrete pipe pile construction.

[0071] In other embodiments of the present invention, the ultra-high strength concrete pipe pile includes a bottom concrete pipe pile extension connecting rod and a multi-section butt-joint concrete pipe pile extension connecting rod. The bottom concrete pipe pile Z1 and the butt-joint concrete pipe pile Z2 are provided with an inner steel sleeve Z11. The bottom concrete pipe pile Z1 does not have an inner steel sleeve Z11 near the top, but is covered with an outer steel sleeve Z12. The butt-joint concrete pipe pile Z2 has the same structure as the top of the bottom concrete pipe pile Z1 near the top, but extends downwards from the bottom end where it is connected to the inner steel sleeve Z21. The outer steel sleeve Z12 is provided with a plurality of first through bolt holes Z13. The butt-joint concrete pipe pile Z2 is provided with a second through bolt hole Z22 that matches the first through bolt holes Z13 at the bottom end where it is connected to the inner steel sleeve Z21.

[0072] The bottom concrete pipe pile Z1 and the multi-section butt-joint concrete pipe pile Z2 are provided with multiple extension columns Z14 around the bottom end, and multiple leakage strip holes Z15 are provided on the side wall of the bottom concrete pipe pile Z1 or the multi-section butt-joint concrete pipe pile Z2 above the extension columns Z14.

[0073] First, lower the bottom concrete pipe pile Z1. During the process of lowering the bottom concrete pipe pile Z1, when the top of the bottom concrete pipe pile Z1 is exposed 20-30cm above the ground, stop lowering. Then, lift the connecting concrete pipe pile Z2. Insert the inner steel sleeve Z21, which extends downwards from the bottom of the connecting concrete pipe pile Z2, into the top of the bottom concrete pipe pile Z1. Connect the first through bolt hole Z13 and the second through bolt hole Z22 with connecting bolts to complete the connection installation. Continue to lower until all the connecting concrete pipe piles Z2 have been lowered. Then, inject concrete grout into the matching steel cage inside the entire concrete pipe pile. The concrete grout will seep out from the leakage strip hole Z15, forming a raised retaining strip, until it solidifies.

[0074] The above method is a more detailed usage instruction. Insert the inner steel sleeve Z21 into the top of the bottom concrete pipe pile Z1, leaving a distance of 1-3 cm to ensure contact with the inner steel sleeve Z11 inside the bottom concrete pipe pile Z1, so as to compress the shock-absorbing rubber ring Z23. This achieves a shock-absorbing effect.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An ultra-high-strength concrete pipe pile seismic construction device, characterized in that: It includes a support frame mechanism, a pile slot opening mechanism and a pipe pile sinking mechanism; The support frame mechanism comprises a bottom support frame, a vertical support steel plate (2) and a top steel plate (3); a support crossbeam (21) is fixed at the bottom end of the vertical support steel plate (2); the support crossbeam (21) is movably installed in the bottom support frame; a top steel plate (3) is fixed at the top end of the vertical support steel plate (2); and the middle positions of both sides of the vertical support steel plate (2) are installed on the front mounting frame of the pile driver; The pile slotting mechanism comprises a slotting rod assembly, a rod rotating assembly, a mounting assembly of the rod rotating assembly and a hoisting assembly; The slotted rod assembly comprises a slotted drill rod (10), an extended connecting rod and a sleeve (45) for stabilizing the connection position. A propeller blade (102) is sleeved on the bottom end of the slotted drill rod (10). A mud bucket (101) is sleeved on the top of the screw blade (102) of the slotted drill rod (10). The mud bucket (101) is connected to the slotted drill rod (10) via a plurality of connecting rods (1011). The top end of the slotted drill rod (10) is a tongue joint (1041). The bottom end of the extended connecting rod is a U-shaped joint (1042) and the top end is a tongue joint (1041). The slotted drill rod (10) The tongue joint (1041) of the drill groove rod (10) and the U-shaped joint (1042) of the extended connecting rod are connected by two pins (104) after being butted together. The top of the drill groove rod (10) and the two ends of the extended connecting rod are each provided with four bolt holes (103), and the four bolt holes (103) at the same end are staggered. The outer walls of the upper and lower halves of the sleeve (45) are each provided with four staggered bolt buckles (451). The ends of the drill groove rod (10) and the extended connecting rod are respectively screwed into the corresponding bolt holes from the bolt buckles (451) from the bottom and top axis positions of the sleeve (45) with bolts (452); The rod rotating assembly (4) comprises a rotating motor (44), a motor mounting block (43), a first vertical shaped frame (41), a downward moving screw rod (421) and a downward moving servo motor (42); the rotating motor (44) is embedded in the motor mounting block (43) and a bearing is sleeved on the motor rotating shaft; the rotating shaft end structure of the rotating motor (44) is the same as the bottom end structure of the extended connecting rod; two vertical limiting rods are arranged on the inner side of the first vertical shaped frame (41); the two sides of the motor mounting block (43) are movably sleeved on the vertical limiting rods; a grooved screw rod (421) is spirally penetrated through the middle position of the motor mounting block (43) and the two ends of the grooved screw rod (421) are rotatably mounted on the two ends of the first vertical shaped frame (41); a downward moving servo motor (42) is arranged at the top end of the first vertical shaped frame (41) and the rotating shaft of the downward moving servo motor (42) is connected to the top end of the grooved screw rod (421); The mounting assembly comprises a second vertical shaped frame (5), two second vertical limiting rods, an abutment plate (72), an abutment screw rod (71) and an abutment motor (7); the bottom end of the second vertical shaped frame (5) is mounted on the left side wall of the vertical support steel plate (2) by a fixing block, and the top end is fixed on the lower surface of the top steel plate (3); two parallel second vertical limiting rods are arranged at the upper and lower ends of the inner side of the second vertical shaped frame (5); the two sides of the first vertical shaped frame (41) are movably sleeved on the two second vertical limiting rods. On the rod, a contact plate movable strip hole (51) is provided in the middle of the upper half of the second vertical shaped frame (5), a contact screw rod (71) is vertically provided between the back of the second vertical shaped frame (5) and the vertical support steel plate (2), and both ends of the contact screw rod (71) are rotatably installed, the contact plate (72) is spirally sleeved on the contact screw rod (71) and passes through the contact plate movable strip hole (51) and is located above the first vertical shaped frame (41), and a contact motor (7) is installed at the top of the contact screw rod (71); The lifting assembly comprises a first lifting brake motor (6), a first steel wire reel and a hook, wherein the first lifting brake motor (6) is mounted on the left half of the top steel plate (3), the first steel wire reel is sleeved on the rotating shaft of the first lifting brake motor (6), and the end of the steel wire wound on the first steel wire reel is tied with a hook, and the steel wire movably passes through the top steel plate (3) below the position of the first steel wire reel; The pipe pile sinking mechanism comprises an impact block (9), a block movable limiting rod (91) and an impact block lifting assembly. Two mounting blocks are symmetrically arranged on the right side of the vertical support steel plate (2) near the top and bottom ends, and a block movable limiting rod (91) is connected between the corresponding mounting blocks. Sleeve blocks (90) are symmetrically arranged at the middle positions on both sides of the impact block (9). The sleeve blocks (90) are movably mounted on the block movable limiting rod (91). The impact block lifting assembly comprises a second lifting brake motor (8) and a second steel wire winding drum. The second lifting brake motor (8) is mounted on the rotating shaft with the second steel wire winding drum. The steel wire wound on the second steel wire winding drum is movably passed through the vertical support steel plate (2) below the second steel wire winding drum and is tied to the top of the impact block (9).

2. The ultra-high-strength concrete pipe pile seismic construction device according to claim 1, characterized in that: The drilling groove rod (10) is equal to the length of the extended connecting rod, and the length of the downward moving screw rod (421) is not less than the length of the drilling groove rod (10).

3. The ultra-high-strength concrete pipe pile seismic construction device according to claim 1, characterized in that: The length of the two second vertical limiting rods on the second vertical profile frame (5) is not less than the depth of the pile groove.

4. The ultra-high-strength concrete pipe pile seismic construction device according to claim 1, characterized in that: The diameter of the cylindrical shape formed by the rotation of the propeller blades (102) is 2-3 cm larger than the outer diameter of the mud retaining bucket (101).

5. The ultra-high-strength concrete pipe pile earthquake-resistant construction device according to claim 1, characterized in that: An impact rubber pad (92) is provided at the bottom of the impact block (9), and hanging rings (93) are symmetrically provided on both sides of the impact block (9) close to the bottom.

6. The ultra-high-strength concrete pipe pile earthquake-resistant construction device according to claim 1, characterized in that: The bottom support frame comprises two main support plates (1) at two sides, a secondary connection plate (11) connecting the two ends of the main support plates (1) and a limit inverted shaped plate (12); the limit inverted shaped plates (12) are fixedly buckled on the two main support plates (1); the two ends of the support crossbeam (21) are inserted into the limit inverted shaped plates (12); three groups of positioning bolt holes (13) are correspondingly arranged between the main support plates (1) and the corresponding limit inverted shaped plates (12); and holes matching the positioning bolt holes (13) are arranged on the two ends of the support crossbeam (21).

7. An ultra-high strength concrete pipe pile seismic construction device according to any one of claims 1 to 6, characterized in that: The ultra-high-strength concrete pipe pile constructed by the construction device comprises a bottom concrete pipe pile (Z1) and a multi-section butt-jointed concrete pipe pile (Z2), the bottom end of the bottom concrete pipe pile (Z1) is truncated (Z16), the inner sides of the bottom concrete pipe pile (Z1) and the butt-jointed concrete pipe pile (Z2) are provided with inner steel sleeves (Z11), the bottom concrete pipe pile (Z1) is not provided with an inner steel sleeve (Z11) at a distance near the top end, but is covered with an outer steel sleeve (Z12) on the outside, the butt-jointed concrete pipe pile (Z2) has the same structure as the top end structure of the bottom concrete pipe pile (Z1) at a distance near the top end, but is butt-jointed with the inner steel sleeve (Z21) at the bottom end and extends downward for a distance, the outer steel sleeve (Z12) is provided with a plurality of first through bolt holes (Z13), and the butt-jointed concrete pipe pile (Z2) is provided with second through bolt holes (Z22) matching the first through bolt holes (Z13) at a distance from the bottom end to the inner steel sleeve (Z21) and extending downward for a distance; The bottom concrete pipe pile (Z1) and the multi-section butt-jointed concrete pipe pile (Z2) are provided with a plurality of extension columns (Z14) around the bottom end, and a plurality of leakage holes (Z15) are provided on the side wall of the bottom concrete pipe pile (Z1) or the multi-section butt-jointed concrete pipe pile (Z2) above the extension columns (Z14).

8. A construction method for an ultra-high-strength concrete pipe pile earthquake-resistant construction device, characterized in that: The construction device according to any one of claims 1 to 7 is used for construction, and the specific construction steps are as follows: S1: The pile driver moves the entire construction device to the position where the pipe pile needs to be driven, presses the bottom support frame on the ground to adjust the level, and needs to drive the pile groove first. At this time, adjust the support crossbeam (21) at the bottom end of the vertical support steel plate on the bottom support frame and fix it, and ensure that the rotating motor (44) in the rod rotating assembly is directly above the pile groove. First, use the downward servo motor (42) to move the motor mounting block (43) to the top, take a drilling groove rod (10) and move the propeller blade ( 102) is appropriately inserted into the pile driving groove position on the ground and placed vertically, a sleeve (45) is sleeved on the top of the drilling groove rod (10), then, the connecting structure on the rotating shaft of the rotating motor (44) is connected to the tongue joint (1041) at the top of the drilling groove rod (10) and connected through a pin (104), the sleeve (45) is pushed up, and the bolt (452) is screwed from the bolt buckle (451) into the corresponding bolt hole (103) to install the sleeve (45); S2: The pile driving groove is excavated in the early stage. The rotating motor (44) rotates. At the same time, the downward servo motor (42) rotates slowly and moves the rotating motor (44) downward through the downward screw rod (421). The propeller blade (102) moves downward when it rotates, and synchronous downward movement is achieved. The propeller blade (102) twists the soil into the gap of the propeller blade (102) and pushes it upward. Since the mud bucket (101) is opened at the top and bottom, the soil will be pushed into the mud bucket (101). According to experience, it is ensured that the mud bucket (101) is filled with no less than 80% of the soil. When the screw blade (102) is not rotated, the contact plate is moved to the topmost position, the hook is hooked or tied to the sleeve (45) below the downward servo motor (42), and the first lifting brake motor (6) is used to drive the first wire reel to reel in the wire, so as to pull up the drilling slot rod (10), and the soil in the mud bucket (101) will not fall down, so it is easy to lift. After the mud bucket (101) is lifted out, the screw blade (102) and the mud in the mud bucket (101) are cleared with a rod or equipment, and the above step S2 process is repeated until the drilling slot rod (10) can no longer be used to continue digging the pile groove; S3: When it is impossible to continue digging the pile groove using the drilling groove rod (10), loosen the bolt (452) on the sleeve (45) and remove the fixed sleeve (45). At this time, move the sleeve (45) downward, remove the pin (104) at the docking position of the connecting structure on the rotating shaft of the rotating motor (44) and the tongue joint (1041) at the top end of the drilling groove rod (10), and then install an extended connecting rod at the top end of the drilling groove rod (10), and install the sleeve (45) at the top end of the extended connecting rod, and extend the extended connecting rod to the connecting rod. The top end is connected to the connecting structure on the rotating shaft of the extended connecting rod of the rotating motor. Before the connection, a sleeve is first put on. The sleeve and the extended connecting rod are installed in the same way. At this time, the pile groove is deeply excavated and the soil is cleared according to step S2. The extended connecting rod and the number of extended connecting rods are connected as needed. After the extended connecting rod () enters the pile groove, the sleeve (45) also has the function of stabilizing the swing of the drilling groove rod (10) and the extended connecting rod and the extended connecting rod; S4: After the deep excavation of the pile groove is completed, the position of the support beam extension connecting rod on the bottom support frame is adjusted and fixed, and the impact block extension connecting rod is placed directly above the pile groove. The concrete pipe pile is moved and the top is tied with a steel wire and the steel wire is tied below the impact block extension connecting rod. At this time, the impact block is at the bottom. The second lifting brake motor is used to extend the connecting rod to pull up the impact block extension connecting rod and lift the concrete pipe pile. The bottom end of the concrete pipe pile is inserted into the top opening of the pile groove. Since the concrete pipe pile has a certain gravity, it will move down a distance, but the excavated pile groove opening is smaller than the outer diameter of the concrete pipe pile. Then, the impact block is continuously released to impact the top of the concrete pipe pile, so that the concrete pipe pile gradually moves down into the pile groove. S4: After impacting the lower concrete pile, concrete slurry is injected into the matching steel cage at the bottom of the concrete pile until it solidifies, completing the construction of the concrete pile.

9. The construction method of the ultra-high-strength concrete pipe pile earthquake-resistant construction device according to claim 8, characterized in that: The concrete pipe pile ultra-high strength concrete pipe pile comprises a bottom concrete pipe pile extension connecting rod () and a multi-section butt concrete pipe pile extension connecting rod, the bottom concrete pipe pile (Z1) and the butt concrete pipe pile (Z2) are provided with an inner steel sleeve (Z11) on the inner side, the bottom concrete pipe pile (Z1) and the butt concrete pipe pile (Z2) are provided with an inner steel sleeve (Z11) on the inner side, the bottom concrete pipe pile (Z1) is not provided with an inner steel sleeve (Z11) at a distance near the top, but is covered with an outer steel sleeve on the outside (Z12), the butt-jointed concrete pipe pile (Z2) has the same structure as the top of the bottom concrete pipe pile (Z1) at a distance near the top, but is butt-jointed with the inner steel sleeve (Z21) at the bottom and extends downward for a distance, and the outer steel sleeve (Z12) is provided with a plurality of first through bolt holes (Z13), and the butt-jointed concrete pipe pile (Z2) has a second through bolt hole (Z22) matching the first through bolt hole (Z13) at a distance from the bottom to the inner steel sleeve (Z21) and extending downward for a distance; The bottom concrete pipe pile (Z1) and the multi-section butt-jointed concrete pipe pile (Z2) are provided with a plurality of extension columns (Z14) around the bottom end, and the side wall of the bottom concrete pipe pile (Z1) or the multi-section butt-jointed concrete pipe pile (Z2) above the extension columns (Z14) is provided with a plurality of liquid leakage holes (Z15); First, lower the bottom concrete pipe pile (Z1), move the bottom concrete pipe pile (Z1) downward until the top of the bottom concrete pipe pile (Z1) is exposed 20-30 cm above the ground, then stop moving downward, then hoist the butt-jointed concrete pipe pile (Z2), insert the butt-jointed inner steel sleeve (Z21) extending downward from the bottom of the butt-jointed concrete pipe pile (Z2) into the top of the bottom concrete pipe pile (Z1), connect the first through bolt hole (Z13) and the second through bolt hole (Z22) with a butt-jointed bolt, complete the butt-jointed installation, continue to sink until all the butt-jointed concrete pipe piles (Z2) are sunk, then inject concrete slurry into the matching steel cage at the bottom of the entire concrete pipe pile, and the concrete slurry will seep out from the leakage strip hole (Z15) to form a raised card strip until solidification.

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