Construction method of pile foundation defect detection and repair device

Abstract

The present invention discloses a construction method for a pile foundation defect detection and repair device, comprising a drive frame, a drive assembly provided on the drive frame, a rotating seat provided on the drive frame, the drive assembly being used to drive the rotating seat to move vertically along the drive frame, the drive frame being also provided with a rotating assembly, the rotating assembly being used to drive the rotating seat to rotate, a core tube and a guide tube provided on the rotating seat, both the core tube and the guide tube being detachably connected to the rotating seat, the guide tube being sleeved on the outside of the core tube, the guide tube and the core tube not interfering with each other, and the core tube being used to drill cores. After the core tube is drilled, the guide tube can be removed and taken out, and the guide tube is left in the hole to cooperate with the grouting equipment and the mixing equipment for repair. The provided guide tube can not only play a guiding role during the drilling and removal of the core, but can also be left in the pile foundation after drilling, providing a guiding role for the grouting and mixing equipment, and reducing interference with the pile foundation.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to a construction method of a pile foundation defect detection and repairing device. Background Art

[0002] Bored cast-in-place piles refer to piles that are formed in the foundation soil at the construction site through mechanical drilling, steel pipe squeezing or manual excavation. A steel cage is then set in the pile hole and concrete is poured into the pile. They are usually used as pile foundations for buildings.

[0003] In order to obtain various data and performance of pile foundations, the core drilling method is usually adopted under the existing technology. After drilling out the core from the partially completed pile foundation, the core can be visually observed and tested to obtain various data of the core and ensure that the performance of the core meets the requirements. Under the existing technology, after the core is taken out, it is necessary to choose whether to repair it according to the condition of the core. When repairing the long hole where the core is taken out, the mixing equipment and the grouting equipment are easily interfered with when extending into the hole, and are stuck in the hole or cause damage to the hole, resulting in low overall detection and repair efficiency. Summary of the Invention

[0004] In order to solve the problem that under the existing technology, after the core is taken out, it is necessary to choose whether to repair it according to the condition of the core. When repairing a longer hole where the core is taken out, the mixing equipment and the grouting equipment are easily interfered with when extending into the hole, and get stuck in the hole or cause damage to the hole, resulting in low overall detection and repair efficiency, the present application provides a construction method for a pile foundation defect detection and repair device, and the specific plan is as follows.

[0005] A construction method for a pile foundation defect detection and repair device includes a drive frame, a drive assembly provided on the drive frame, a rotating seat provided on the drive frame, the drive assembly being used to drive the rotating seat to move vertically along the drive frame, the drive frame being further provided with a rotating assembly, the rotating assembly being used to drive the rotating seat to rotate, a core barrel and a guide tube provided on the rotating seat, both of which are detachably connected to the rotating seat, the guide tube being sleeved on the outside of the core barrel, the guide tube and the core barrel not interfering with each other, and the core barrel being used to drill cores. After the core barrel is drilled, the guide tube can be removed and the core barrel can be retained in the hole to cooperate with grouting equipment and stirring equipment for repair.

[0006] By adopting the above technical solution, after the core tube and the guide tube are connected to the rotating seat, the rotating seat can simultaneously drive the core tube and the guide tube to rotate. Under the action of the driving assembly, the core tube and the guide tube are drilled into the ground to drill the core. During drilling, the guide tube can provide a guide for the core tube, reducing the situation where the core tube deviates during drilling and causes damage to the core. After drilling is completed, the guide tube can be removed and left in the drilled hole. When the extracted core has defects such as cavitation, the grouting equipment and the mixing equipment are extended along the guide tube for grouting repair. The guide tube can now provide a guide for the grouting equipment and the mixing equipment, reducing the situation where the grouting equipment and the mixing equipment interfere with the pile foundation or cause damage to the pile foundation, and can also provide a guide for the injected slurry. The guide tube provides a guide for core drilling and grouting at the same time, thereby improving the overall efficiency of detection and repair.

[0007] Optionally, a connecting screw is further included, wherein a connecting hole is provided on the rotating seat, and the connecting hole passes through the rotating seat. A corresponding connecting hole is provided on the core tube, and the connecting screw is threadedly connected to the connecting hole and passes through the core tube and the mounting seat. Fastening nuts are provided at both ends of the connecting screw, and the fastening nuts are used to tighten the outer wall of the core tube.

[0008] By adopting the above technical solution, a connecting screw is provided on the rotating seat, the connecting screw passes through the rotating seat and is connected to the core tube, and is fastened by a fastening nut, so that the core tube can rotate with the rotating seat. When the core tube is taken out, the core tube can be rotated along the connecting screw to a certain extent, and the angle can be adjusted to take out the core, thereby improving the convenience of core drilling.

[0009] Optionally, a docking hole is provided on the core tube, and the docking hole is arranged on the lower side of the connecting hole. A corresponding docking hole is also provided on the guide tube. A docking screw is provided at the docking hole, and the docking screw is threadedly connected to the docking hole. The docking screw passes through the core tube and the guide tube in sequence. Fastening nuts are provided at both ends of the docking screw corresponding to the guide tubes, and the fastening nuts at the guide tubes are used to tighten the guide tubes.

[0010] By adopting the above technical solution, a docking hole and a docking screw are provided on the core tube, and the guide tube is fixed to the core tube by a fastening nut, so that the guide tube can rotate with the core tube, is easy to assemble and disassemble, and has little impact on core drilling.

[0011] Optionally, the core tube is longer than the guide tube, and during drilling, the core tube is deeper than the guide tube.

[0012] By adopting the above technical solution, when drilling, the core tube is deeper than the guide tube, which can reduce the situation where the guide tube contacts the pile foundation and rotates before the core tube, thereby reducing the situation where broken rock enters the core tube, improving the quality of the drilled core, thereby reducing the situation of multiple drilling and improving overall work efficiency.

[0013] Optionally, the core tube includes a plurality of tube bodies, which are detachably connected to each other, and drill teeth are provided on the tube body at the bottom end of the core tube, and the drill teeth are arranged around the tube body.

[0014] By adopting the above technical solution, multiple tubes are spliced ​​together to form a core tube, and drill teeth are set on the tube at the bottom. Before drilling, different numbers of tubes can be selected for splicing according to the length to be drilled, thereby improving applicability. After the core is taken out, part of the tube can be removed to facilitate the removal of the core.

[0015] Optionally, drill teeth are provided at the bottom of the guide tube, the drill teeth are arranged around the guide tube, the drill teeth are arranged toward the core tube and are used to block rock fragments.

[0016] By adopting the above technical solution, drill teeth are provided at the bottom of the guide tube, and the guide tube can also drill out part of the rock when it moves downward and rotates with the core tube, thereby reducing the wear caused by the contact between the guide tube and the rock, and reducing the situation where the guide tube is blocked and cannot move downward. The drill teeth are arranged toward the core tube, which can reduce the situation where broken rock enters between the core tube and the guide tube, and reduce the situation where broken rock is located between the core tube and the guide tube and gets stuck between the two.

[0017] Optionally, a rubber pad is further provided on the docking screw, and the rubber pad is slidably connected to the docking screw. The rubber pad is arranged between the core tube and the guide tube, and one side of the rubber pad abuts the core tube, and the other side abuts the guide tube.

[0018] By adopting the above technical solution, a rubber pad is provided between the core tube and the guide tube to abut against the two. There is friction on both sides of the rubber pad, which makes the fixation between the guide tube and the core tube more stable, and can limit the displacement of the guide tube, reduce the deviation of the guide tube on the docking screw during rotation, and improve stability.

[0019] Optionally, a fixing frame is further provided on the outer wall of the guide tube, the fixing frame is arranged toward the outside of the guide tube, and the fixing frame is provided with a fixing seat toward the ground, and the fixing seat is used to abut against the ground.

[0020] By adopting the above technical solution, after the core tube and the core are taken out, the guide tube can be fixed to the ground using a fixing seat, which improves the stability of the core tube during grouting and mixing, further improving the stability of the work.

[0021] Optionally, the docking hole on the guide tube and the connecting hole on the rotating seat are the same in size and shape.

[0022] By adopting the above technical solution, when the retained guide tube is taken out, the guide tube can be connected to the rotating seat with the help of the docking hole and the connecting hole, and then the driving component can pull the guide tube out of the pile foundation, thereby improving convenience.

[0023] In summary, this application has at least the following beneficial effects:

[0024] 1. The present application solves the problem that under the prior art, after the core is taken out, it is necessary to choose whether to repair it according to the condition of the core. When repairing a longer hole where the core is taken out, the mixing equipment and the grouting equipment are easily interfered with each other when inserted into the hole, and are stuck in the hole or cause damage to the hole, resulting in low overall detection and repair efficiency. The present application provides a detachable guide tube on the outside of the core tube. After the core is drilled, the guide tube can be removed and left in the pile foundation. When the pile foundation is tested and found to be unqualified, the guide tube provides a guide for the mixing equipment and the grouting equipment, and reduces the situation where the mixing equipment and the grouting equipment interfere with each other in the hole of the pile foundation, damaging the hole or damaging the equipment.

[0025] 2. The core tube of the present application is spliced ​​together by multiple tube bodies. During testing, different numbers of core tubes can be selected for splicing according to the required core length. The core tube and the guide tube are spliced ​​together by docking screws, and the core tube and the rotating seat are spliced ​​together by connecting screws. The spliced ​​connecting holes are the same size as the docking holes. The guide tube can be spliced ​​outside the core tube after the rotating seat is connected to the core tube, or the rotating seat and the guide tube can be directly spliced, which makes it easy to remove the retained guide tube and improves convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a perspective view of this embodiment.

[0027] Figure 2 It is a cross-sectional view of this embodiment.

[0028] Description of reference numerals:

[0029] 1. Drive frame; 11. Guide rod; 12. Screw; 13. Drive motor; 14. Drill mouth;

[0030] 2. Moving frame; 21. Rotating seat; 22. Rotating motor;

[0031] 3. Core barrel; 31. Pipe body; 311. Threaded pipe; 312. Threaded section; 313. Connecting hole; 314. Drill tooth; 32. Connecting screw; 321. Fastening nut;

[0032] 4. Guide tube; 41. Docking hole; 42. Docking screw; 43. Rubber pad; 44. Fixing bracket; 45. Fixing seat; 451. Seat body; 452. Mounting rod; DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-2 , this application is further described in detail through specific examples.

[0034] A construction method for a pile foundation defect detection and repair device, such as Figure 1 and Figure 2 As shown, it includes a drive frame 1, a drive assembly is provided on one side of the drive frame 1, and a guide rod 11 is provided on the other side of the drive frame 1. The drive assembly includes a screw rod 12 and a drive motor 13. The rotating shaft of the drive motor 13 is fixedly connected to the screw rod 12, and the screw rod 12 is connected to the rotating wheel of the drive frame 1. The screw rod 12 and the guide rod 11 are both vertically arranged along the drive frame 1. A mobile frame 2 is provided between the guide rod 11 and the screw rod 12. One end of the mobile frame 2 is threadedly connected to the guide rod 11, and the other end is slidably connected to the guide rod 11. In specific implementation, when the drive motor 13 is working, the screw rod 12 rotates. After the screw rod 12 rotates, the mobile frame 2 cannot rotate because the other end of the rotating seat 21 is restricted on the guide rod 11. Therefore, the mobile frame 2 can only move up and down along the screw rod 12. In other embodiments, the drive assembly may also include an air cylinder and an oil cylinder. The air cylinder or the oil cylinder can be directly fixedly connected to the mobile frame 2. The guide rod 11 is provided at both ends of the mobile frame 2. The air cylinder or the oil cylinder can directly drive the mobile frame 2 to move up and down.

[0035] like Figure 1 and Figure 2 As shown, the mobile frame 2 is provided with a rotating base 21, which is rotatably connected to the mobile frame 2. A rotating assembly is provided on the mobile frame 2 corresponding to the rotating base 21. The rotating assembly includes a rotating motor 22, and the rotating shaft of the rotating motor 22 is fixedly connected to the rotating base 21. A drill hole 14 is formed at the bottom of the driving frame 1 corresponding to the rotating base 21. In a specific implementation, the drill hole 14 is placed corresponding to the position of the pile foundation, and the rotating motor 22 can drive the rotating base 21 to rotate when in operation. In other embodiments, the rotating assembly may further include a bearing, and the rotating base 21 can be rotatably connected to the mobile frame 2 via the bearing to reduce friction and improve rotation efficiency.

[0036] like Figure 1 and Figure 2As shown, the core barrel 3 also includes a plurality of tubes 31. Each tube 31 has a threaded tube 311 protruding upward from its upper end, and a threaded section 312 corresponding to the threaded tube 311 is provided at its lower end. Each tube 31 is threadedly connected to its adjacent tube 31 via the threaded tube 311 and the threaded section 312. The uppermost tube 31 and the rotating base 21 have corresponding connecting holes 313 formed therein. A connecting screw 32 is disposed within the connecting hole 313. The connecting screw 32 passes through the rotating base 21 and the tube 31 and is threadedly connected within the connecting hole 313. Fastening nuts 321 are provided at each end of the connecting screw 32 and are threadedly connected to the fastening nuts 321. The lowermost tube 31 has drill teeth 314 disposed at its bottom. The drill teeth 314 surround the tube 31 and are integrally formed with the tube 31. In specific implementation, the fastening nut 321 abuts against the tubular body 31 equipped with the connecting screw 32, and the rotating seat 21 can drive the entire core barrel 3 to rotate. With the cooperation of the moving frame 2, the core barrel 3 can move downward and rotate at the same time. The drill teeth 314 on the bottom tubular body 31 pass through the drill hole 14 of the driving frame 1 to drill out the core from the pile foundation. In other embodiments, the core barrel 3 can also be a double-layer core barrel 3 to improve the efficiency and stability of core drilling.

[0037] like Figure 1 and Figure 2 As shown, the core tube 3 also includes a guide tube 4, which is sleeved on the outside of the core tube 3, with a certain distance between the guide tube 4 and the core tube 3. A docking hole 41 is formed on the tube body 31 connected to the rotating seat 21, corresponding to the guide tube 4. The docking hole 41 is located below the connection hole 313 on the tube body 31. The guide tube 4 also has a corresponding docking hole 41. A docking screw 42 is provided at the docking hole 41 and is threadedly connected to the docking hole 41. The docking screw 42 sequentially passes through the core tube 3 and the guide tube 4. Fastening nuts 321 are also provided at both ends of the docking screw 42, which are threadedly connected to the docking screw 42. A rubber pad 43 is also provided on the docking screw 42, which is slidably connected to the docking screw 42. The rubber pad 43 is positioned between the core tube 3 and the guide tube 4. One end of the rubber pad 43 abuts the outer wall of the tube body 31 of the core tube 3, and the other end abuts the inner wall of the guide tube 4, thereby increasing friction and reducing the deviation of the guide tube 4. In a specific implementation, the docking hole 41 and the connecting hole 313 are of the same size and shape, so that the guide tube 4 can be connected to the rotating device to lift the removed guide tube 4.

[0038] like Figure 1 and Figure 2As shown, the guide tube 4 is shorter than the entire core barrel 3, and the bottom of the guide tube 4 is higher than the bottom of the core barrel 3. The bottom of the guide tube 4 is also provided with drill teeth 314. The drill teeth 314 at the bottom of the guide tube 4 are arranged around the guide tube 4, and the drill teeth 314 at the bottom of the guide tube 4 are arranged toward the core barrel 3. The drill teeth 314 of the guide tube 4 block the space between the core barrel 3 and the guide tube 4. In practice, the guide tube 4 moves toward the ground along with the core barrel 3 to perform drilling. The core barrel 3 is drilled first, and then the guide tube 4 is drilled. The broken pile foundation reduces the force required for the guide tube 4 to drill, and can reduce the risk of rock fragments currently drilled out by the guide tube 4 entering the core barrel 3. The drill teeth 314 on the guide tube 4 can prevent rock fragments from entering the space between the guide tube 4 and the core barrel 3.

[0039] like Figure 1 and Figure 2 As shown, a fixing bracket 44 is provided on the outer wall of the upper portion of the guide tube 4. The fixing bracket 44 is integrally provided with the guide tube 4 and is spaced circumferentially around the outer wall of the guide tube 4. The fixing bracket 44 has a mounting hole, and a fixing seat 45 is provided at a mounting rod 452. The fixing seat 45 includes a mounting rod 452 and a base 451. The mounting rod 452 is provided on the upper side of the base 451 and is integrally provided with the base 451. The mounting rod 452 is threadedly connected to the fixing bracket 44, and a fastening nut 321 is also provided on the mounting rod 452. In a specific implementation, the upper portion of the guide tube 4 generally does not extend into the pile foundation. When the guide tube 4 is retained in the pile foundation, the fixing bracket 45 can be mounted on the fixing bracket 44. The height of the fixing bracket 45 can be adjusted by threading so that it abuts the ground. The adjusted height can be fixed by fastening the nut 321, thereby securing the guide tube 4 to the ground.

[0040] Working principle: Align the driving frame 1 with the position of the pile foundation that needs to be drilled and tested, splice the tube body 31 into an integrated core tube 3, and then put the guide tube 4 on the outside of the core tube 3, then connect the core tube 3 with the rotating seat 21, and connect the guide tube 4 with the core tube 3 to complete the installation. At this time, the driving motor 13 and the rotating motor 22 work at the same time, and the guide tube 4 and the core tube 3 move downward and rotate at the same time to drill out the core on the pile foundation. After drilling is completed, the guide tube 4 is removed and left in the pile foundation, and the core tube 3 and the core are taken out by the driving motor 13 to observe the condition of the core. When there are defects in the core, the grouting equipment and the mixing equipment can repair the pile foundation under the guidance of the guide tube 4. While grouting and repairing, the guide tube 4 is connected to the rotating seat 21, and the guide tube 4 is pulled out of the pile foundation while repairing. When there are no defects in the core, construction can continue.

[0041] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A construction method for a pile foundation defect detection and repair device, characterized in that: The invention comprises a driving frame (1), wherein the driving frame (1) is provided with a driving assembly, and the driving frame (1) is further provided with a rotating seat (21), wherein the driving assembly is used to drive the rotating seat (21) to move vertically along the driving frame (1), and the driving frame (1) is further provided with a rotating assembly, wherein the rotating assembly is used to drive the rotating seat (21) to rotate, and the rotating seat (21) is provided with a core tube (3) and a guide tube (4), wherein the core tube (3) and the guide tube (4) are both detachably connected to the rotating seat (21), and the guide tube (4) is sleeved on the outer surface of the core tube (3). On the side, the guide tube (4) and the core tube (3) do not interfere with each other. The core is drilled out on the pile foundation. After the drilling is completed, the guide tube (4) is disassembled and left in the pile foundation. The core tube (3) and the core are taken out by the driving motor (13). The condition of the core is observed. When the core has defects, the grouting equipment and the mixing equipment can repair the pile foundation under the guidance of the guide tube (4). While the grouting and repairing are being carried out, the guide tube (4) is connected to the rotating seat (21). The guide tube (4) is pulled out of the pile foundation while repairing. When the core has no defects, the construction can be continued.

2. The construction method of a pile foundation defect detection and repair device according to claim 1, characterized in that: The invention also includes a connecting screw (32), a connecting hole (313) is provided on the rotating seat (21), the connecting hole (313) is arranged through the rotating seat (21), a corresponding connecting hole (313) is provided on the core tube (3), the connecting screw (32) is threadedly connected to the connecting hole (313) and is arranged through the core tube (3) and the mounting seat, and fastening nuts (321) are provided at both ends of the connecting screw (32), and the fastening nuts (321) are used to press against the outer wall of the core tube (3).

3. The construction method of a pile foundation defect detection and repair device according to claim 2, characterized in that: The core tube (3) is provided with a docking hole (41), which is arranged at the lower side of the connecting hole (313). The guide tube (4) is also provided with a corresponding docking hole (41). A docking screw (42) is provided at the docking hole (41), which is threadedly connected to the docking hole (41). The docking screw (42) passes through the core tube (3) and the guide tube (4) in sequence. Fastening nuts (321) are provided at both ends of the docking screw (42) corresponding to the guide tube (4). The fastening nuts (321) at the guide tube (4) are used to tighten the guide tube (4).

4. The construction method of a pile foundation defect detection and repair device according to claim 1, characterized in that: The core tube (3) is longer than the guide tube (4), and during drilling, the core tube (3) is deeper than the guide tube (4).

5. The construction method of a pile foundation defect detection and repair device according to claim 1, characterized in that: The core tube (3) comprises a plurality of tube bodies (31), the plurality of tube bodies (31) being detachably connected to each other, and a drill tooth (314) being provided on the tube body (31) at the bottom end of the core tube (3), and the drill tooth (314) being provided around the tube body (31).

6. The construction method of a pile foundation defect detection and repair device according to claim 1, characterized in that: The bottom of the guide tube (4) is provided with drill teeth (314), the drill teeth (314) are arranged around the guide tube (4), the drill teeth (314) are arranged toward the core tube (3) and are used to block rock fragments.

7. The construction method of a pile foundation defect detection and repair device according to claim 3, characterized in that: The docking screw (42) is further provided with a rubber pad (43), the rubber pad (43) being slidably connected to the docking screw (42), the rubber pad (43) being arranged between the core tube (3) and the guide tube (4), one side of the rubber pad (43) abutting against the core tube (3), and the other side abutting against the guide tube (4).

8. The construction method of a pile foundation defect detection and repair device according to claim 1, characterized in that: A fixing frame (44) is further provided on the outer wall of the guide tube (4), the fixing frame (44) being arranged toward the outside of the guide tube (4), and a fixing seat (45) being provided on the fixing frame (44) toward the ground, the fixing seat (45) being used for contacting the ground.

9. The construction method of a pile foundation defect detection and repair device according to claim 3, characterized in that: The docking hole (41) on the guide tube (4) and the connecting hole (313) on the rotating seat (21) are of the same size and shape.

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