CN115198750B - Cast-in-place pile head blocking and cutting device and method - Google Patents
Cast-in-place pile head blocking and cutting device and method Download PDFInfo
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- CN115198750B CN115198750B CN202210702817.8A CN202210702817A CN115198750B CN 115198750 B CN115198750 B CN 115198750B CN 202210702817 A CN202210702817 A CN 202210702817A CN 115198750 B CN115198750 B CN 115198750B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a cast-in-place pile head blocking and cutting device and a method, wherein the cast-in-place pile head blocking and cutting device comprises a base, wherein the base surrounds a reinforcing ring; the reinforcing ring wraps the bottom end of the pile head; the center of the supporting plate is embedded with a driver; the bottom end of the upright post is connected with the sliding block in a welded mode; the top end of the sleeve is welded with the bottom surface of the upright post; the connecting seat is rotatably arranged on the extension plate; the rotating shaft above the driver penetrates through the large gear; the connecting transverse plate is provided with a lifting column in a threaded connection manner on the bottom surface. According to the cast-in-place pile head blocking and cutting device and method, the hollow drill bit is used for drilling holes in the pile head, so that the pile head is divided into the second pile block and the third pile block, the pile blocks are mutually impacted and broken by utilizing the hammer, small pile blocks after breaking are conveniently taken out to form an annular groove, a nozzle is used for entering a groove injection water line, annular cutting is conducted on the first pile block and the third pile block, and blocking and cutting effects are achieved.
Description
Technical Field
The invention relates to the technical field related to cast-in-place pile construction, in particular to a cast-in-place pile head blocking and cutting device and method.
Background
When pouring the cast-in-place pile, the elevation of the cast-in-place pile top is 0.5-1.0m higher than the designed pile top elevation to ensure the strength of pile head concrete, but the pile head part higher than the designed pile top elevation must be chiseled off during the construction of the subsequent procedures, the work of chiseling off the pile head concrete is called as 'pile head breaking', in the pile head breaking process, pile head reinforcing steel bars and acoustic pipes (when acoustic pipes are provided) are required to be protected, the pile head reinforcing steel bars cannot be bent at will, and the bending of the reinforcing steel bars cannot exceed 15 degrees.
In the prior art, when the pile head is removed, firstly pile head reinforcing steel bars are stripped by adopting a manual chiseling mode, then holes are drilled at the bottom of the pile head, then wedges are inserted into the drilled holes, and the concrete pile head is broken by driving the wedges, so that the time consumption is long, the efficiency is low, the reinforcing steel bars are easy to damage or bend when the pile head reinforcing steel bars are stripped, and meanwhile, cracks are easy to be generated on a pile body when the pile head is split by utilizing the wedges, so that the use of the cast-in-place pile is influenced.
Disclosure of Invention
The invention provides a cast-in-place pile head blocking and cutting device and method for making up market blank.
The invention aims to provide a pile head blocking and cutting device and method for a cast-in-place pile, which are used for solving the problems that the prior art provided in the background art is long in time consumption and low in efficiency when removing pile heads, reinforcing steel bars are easy to damage or bend when stripping the pile heads, and cracks are easy to generate on a pile body and the use of the cast-in-place pile is influenced when splitting the pile heads by utilizing wedges.
In order to achieve the above purpose, the present invention provides the following technical solutions: a bored concrete pile head blocking and cutting device, comprising:
the base surrounds the reinforcing ring, an annular chute is formed in the top of the base, and a circle of positioning pieces are uniformly welded at the edge of the top surface of the base;
the reinforcing ring wraps the bottom end of the pile head, and the height of the reinforcing ring is larger than that of the base;
the device comprises a supporting plate, a driving device, a connecting seat and a driving device, wherein the driving device is embedded in the center of the supporting plate;
the bottom end of the upright post is connected with the sliding block in a welded mode, a sliding rail is welded on the outer side face of the upright post, and the top end of the upright post penetrates through the supporting plate;
the top end of the sleeve is welded with the bottom surface of the upright post, the outer side surface of the sleeve is provided with a sliding mechanism and an extension plate, and the extension plate and the sleeve are of an integrated structure formed by casting;
the connecting seat is rotatably arranged on the extension plate, an interface is formed at the bottom end of the connecting seat, and a transmission shaft is inserted at the top end of the connecting seat;
the rotating shaft above the driver penetrates through the large gear, and the rotating shaft below the driver is rotationally connected with the connecting transverse plate;
the connecting transverse plate is characterized in that a lifting column is arranged on the bottom surface of the connecting transverse plate in a threaded connection mode, a nozzle is arranged at the bottom end of the lifting column, and the nozzle is communicated with the guide pipe.
Further, teeth are arranged on the inner wall of the sliding groove and the outer ring surface of the sliding block, the sliding groove is meshed with the sliding block, and the positioning piece is used for fixing the position of the sliding block.
Further, the backup pad is the disc structure, the diameter size of backup pad with the outer loop diameter size of base is the same, four through-holes have been seted up in the backup pad, the through-hole with the connecting seat one-to-one.
Further, the height of the stand column is larger than that of the pile head, the top end of the stand column sequentially penetrates through the sleeve and the supporting plate upwards, and the sliding rail is symmetrical to the stand column in front and back.
Further, the sleeve and the extension plate form a T-shaped structure, the extension plate is rotatably provided with a connecting seat, the length of the extension plate is smaller than the radius length of the pile head, and the extension plate is parallel to the support plate.
Further, the top end of the transmission shaft extends out of the connecting seat to be connected with the pinion, the pinion is meshed with the large gear, the hollow drill bit is of a tubular structure, and the hollow drill bit is located right above the groove.
Further, the bottom of lifting column inserts the recess, the inside and outside both sides of recess form fourth stake piece and third stake piece respectively, the parcel has the reinforcing bar in the third stake piece, stake head in the recess includes first stake piece and second stake piece, just first stake piece and second stake piece are distributed in turn.
A pile head block cutting method of a cast-in-place pile comprises the following steps:
s1, after pouring of the cast-in-place pile is completed, digging foundation soil to expose a pile head, and mounting a cutting device on the pile head;
s2, installing a hollow drill bit, driving the sleeve and the supporting plate to move downwards through the sliding mechanism, enabling the hollow drill bit to drill holes on the pile head, and after adjusting the position of the upright post, drilling holes again by using the hollow drill bit until a first pile block and a second pile block appear on the pile head;
s3, striking a gap between the first pile block and the second pile block by using a pick and a hammer to break the first pile block and the second pile block, and taking out the broken first pile block and second pile block to form a groove;
s4, installing a connecting transverse plate, driving the sleeve and the supporting plate to move downwards through the sliding mechanism, enabling the lifting column to stretch into the lifting column, connecting the high-pressure water flow device through the guide pipe, enabling the nozzle to jet out the waterline to cut the fourth pile block and the third pile block, and taking out the fourth pile block and the third pile block.
Compared with the prior art, the invention has the beneficial effects that: according to the cast-in-place pile head block cutting device and method, the hollow drill bit is used for drilling holes in the pile head, so that the pile head is divided into the second pile block and the third pile block, the pile blocks are mutually impacted and broken by using the hammer, small pile blocks after breaking are conveniently taken out to form annular grooves, the nozzles enter the groove injection water lines, the first pile block and the third pile block are subjected to annular cutting, a block cutting effect is achieved, steel bars in the pile head and pile bodies on the lower layer are prevented from being damaged, and the pile head dismantling efficiency is improved;
1. four groups of connecting seats and hollow drill bits are arranged in the cutting device, so that drilling holes are conveniently formed, pile block areas formed by the drilling holes are overlapped, so that the pile blocks are broken through impact, the drilling hole areas are positioned on the inner side of the steel bar, and the steel bar is prevented from being damaged;
2. the connecting transverse plate is utilized to connect the rotating shaft with the nozzle, and the rotating shaft drives the connecting transverse plate to rotate, so that the nozzle moves along the groove, and the circular cutting effect is conveniently realized;
3. the hollow drill bit and the connecting transverse plate in the device are of detachable structures, and cannot be installed and used at the same time, but the hollow drill bit and the connecting transverse plate are powered by a driver.
Drawings
FIG. 1 is a schematic elevational view of the structure of the present invention;
FIG. 2 is a schematic elevational cross-sectional view of an installed hollow drill bit of the present construction;
FIG. 3 is a schematic elevational cross-sectional view of a mounting connection cross plate of the structure of the present invention;
FIG. 4 is a schematic top view of the structure of the present invention;
FIG. 5 is a schematic top cross-sectional view of the structure of the present invention;
fig. 6 is a schematic top view in cross section of the structure of the present invention with the second pile block and the third pile block removed.
In the figure: 1. a base; 2. a reinforcing ring; 3. a support plate; 4. a column; 5. a sleeve; 6. a connecting seat; 7. a driver; 8. a connecting transverse plate; 9. a pile head; 11. a chute; 12. a positioning piece; 31. a through hole; 41. a slide rail; 42. a slide block; 51. a sliding mechanism; 52. an extension plate; 61. a transmission shaft; 62. an interface; 63. a pinion gear; 64. a hollow drill bit; 71. a large gear; 72. a rotating shaft; 81. lifting columns; 82. a nozzle; 83. a conduit; 91. reinforcing steel bars; 92. a first pile block; 93. a second pile block; 94. a third pile block; 95. a fourth pile block; 96. a groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The first embodiment is as follows: referring to fig. 1-6, the present invention provides a technical solution: a bored concrete pile head blocking and cutting device, comprising:
the base 1, the base 1 surrounds the reinforcement ring 2, the top of the base 1 is provided with an annular chute 11, and a circle of positioning pieces 12 are uniformly welded at the edge of the top surface of the base 1;
the reinforcing ring 2 wraps the bottom end of the pile head 9, and the height of the reinforcing ring 2 is larger than that of the base 1;
the supporting plate 3 is embedded with a driver 7 at the center of the supporting plate 3, a through hole 31 is arranged on the supporting plate 3, and a connecting seat 6 is inserted in the through hole 31;
the bottom end of the upright post 4 is welded and connected with the sliding block 42, the outer side surface of the upright post 4 is welded with the sliding rail 41, and the top end of the upright post 4 passes through the supporting plate 3;
the sleeve 5, the top end of the sleeve 5 is welded with the bottom surface of the upright post 4, the outer side surface of the sleeve 5 is provided with a sliding mechanism 51 and an extension plate 52, and the extension plate 52 and the sleeve 5 are of an integrated structure formed by casting;
the connecting seat 6 is rotatably arranged on the extension plate 52, an interface 62 is formed at the bottom end of the connecting seat 6, and a transmission shaft 61 is inserted at the top end of the connecting seat 6;
the driver 7, the rotating shaft 72 above the driver 7 penetrates the large gear 71, the rotating shaft 72 below the driver 7 is connected with the connecting transverse plate 8 in a rotating way;
the connecting cross plate 8, the lifting column 81 is installed on the bottom surface of the connecting cross plate 8 in a threaded connection mode, the nozzle 82 is installed at the bottom end of the lifting column 81, and the nozzle 82 is communicated with the guide pipe 83.
When the cast-in-place pile head blocking and cutting device is used, the cutting device is sleeved on the pile head 9 through a hoisting mechanism, a reinforcing ring 2 wraps a pile body below the elevation line of the pile head 9, a hollow drill bit 64 is mounted on a connecting seat 6, a driver 7 is started, a large gear 71 drives a pinion 63 to rotate, so that the hollow drill bit 64 rotates, a sliding mechanism 51 drives a sleeve 5 to move downwards along a sliding rail 41, the hollow drill bit 64 is close to the pile head 9 to drill holes, the pile head 9 is completely removed in a layering treatment mode, after primary drilling is completed, the sliding mechanism 51 drives the sleeve 5 to reset upwards, a stand column 4 is rotated to adjust the drilling position, the stand column 4 is locked by using a positioning piece 12, secondary drilling is repeated through the arrangement until drilling is communicated to form a ring groove, and adjacent drilling areas are partially overlapped;
the second pile block 93 and the third pile block 94 are formed on the pile head 9 after the drilling is completed, the hammers and the picks are used for knocking the pile blocks from the gap between the second pile block 93 and the third pile block 94, so that the pile blocks are mutually impacted and broken, the hollow drill bit 64 is conveniently and directly taken out, the connecting transverse plate 8 is installed, the lifting column 81 drives the nozzle 82 to enter the groove 96, the connecting guide pipe 83 and the high-pressure water spraying device are connected, the ejected waterline is used for cutting the first pile block 92 and the fourth pile block 95, the cut pile blocks are taken out, the next layer of cutting is carried out by repeating the steps until the whole pile head 9 is completely removed.
The second embodiment is as follows: in this embodiment, as shown in fig. 5 and fig. 6, teeth are disposed on the inner wall of the chute 11 and the outer ring surface of the slider 42, the chute 11 is meshed with the slider 42, the positioning member 12 is used for fixing the position of the slider 42, and when the slider 42 drives the upright post 4 to move to the positioning member 12, the insert rod in the positioning member 12 is pushed to insert into the upright post 4, so as to achieve the effect of limiting and locking, and avoid displacement of the slider 42 in the drilling process.
And a third specific embodiment: in this embodiment, as shown in fig. 2 and 4, the support plate 3 has a disc structure, the diameter of the support plate 3 is the same as the outer diameter of the base 1, four through holes 31 are formed in the support plate 3, the through holes 31 are in one-to-one correspondence with the connection seats 6, and the support plate 3 moves synchronously with the sleeve 5.
The specific embodiment IV is as follows: this embodiment is the further definition of embodiment one, and the height of stand 4 is greater than the height of pile head 9, and sleeve pipe 5 and backup pad 3 are upwards passed in proper order on the top of stand 4, and slide rail 41 is symmetrical about stand 4 front and back, sets up four stands 4 and not only improves the supporting effect, makes the device operation stable, accelerates drilling efficiency simultaneously, has improved demolishs efficiency.
Fifth embodiment: as further defined in the first embodiment, as shown in fig. 2, 3 and 6, the sleeve 5 and the extension plate 52 form a T-shaped structure, the extension plate 52 is rotatably provided with the connecting seat 6, the length of the extension plate 52 is smaller than the radius length of the pile head 9, the extension plate 52 is parallel to the support plate 3, and the length of the extension plate 52 is determined by the size of the pile head 9, so that the connecting seat 6 is always located inside the reinforcing steel bar 91 and is suitable for the pile head 9 with a large size.
Specific embodiment six: in this embodiment, as further defined in the fifth embodiment, the top end of the transmission shaft 61 extends out of the connecting seat 6 to connect with the pinion 63, the pinion 63 is meshed with the large gear 71, the hollow drill 64 has a tubular structure, and the hollow drill 64 is located right above the groove 96.
Seventh embodiment: this embodiment is further limited in that, in the fifth embodiment, the bottom end of the lifting column 81 is inserted into the groove 96, the fourth pile block 95 and the third pile block 94 are formed on the inner side and the outer side of the groove 96, the third pile block 94 is wrapped with the steel bar 91, the pile head 9 in the groove 96 includes the first pile block 92 and the second pile block 93, and the first pile block 92 and the second pile block 93 are alternately separated, because of different pile block thicknesses, the force of the nozzle 82 in cutting the fourth pile block 95 is larger, the force of cutting the first pile block 92 is smaller, and the steel bar 91 is prevented from being damaged by the waterline.
Eighth embodiment: a pile head block cutting method of a cast-in-place pile comprises the following steps:
s1, after pouring of the cast-in-place pile is completed, digging foundation soil to expose a pile head 9, and mounting a cutting device on the pile head 9;
s2, installing a hollow drill bit 64, driving the sleeve 5 and the supporting plate 3 to move downwards through the sliding mechanism 51, drilling the hollow drill bit 64 on the pile head 9, and drilling by using the hollow drill bit 64 again after adjusting the position of the upright post 4 until a first pile block 92 and a second pile block 93 appear on the pile head 9;
s3, striking a gap between the first pile block 92 and the second pile block 93 by using a pick and a hammer to fracture the first pile block 92 and the second pile block 93, and taking out the fractured first pile block 92 and second pile block 93 to form a groove 96;
s4, installing the connecting transverse plate 8, driving the sleeve 5 and the supporting plate 3 to move downwards through the sliding mechanism 51, enabling the lifting column 81 to extend into the lifting column 81, connecting a high-pressure water flow device through the guide pipe 83, enabling the nozzle 82 to emit a water line to cut the fourth pile block 95 and the third pile block 94, and taking out the fourth pile block 95 and the third pile block 94.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A bored concrete pile head blocking and cutting device, which is characterized by comprising:
the base (1), the base (1) surrounds the reinforcement ring (2), an annular chute (11) is formed in the top of the base (1), and a circle of positioning pieces (12) are uniformly welded at the edge of the top surface of the base (1);
the reinforcing ring (2) wraps the bottom end of the pile head (9), and the height of the reinforcing ring (2) is larger than that of the base (1);
the device comprises a supporting plate (3), wherein a driver (7) is embedded in the center of the supporting plate (3), a through hole (31) is formed in the supporting plate (3), and a connecting seat (6) is inserted in the through hole (31);
the bottom end of the upright post (4) is connected with the sliding block (42) in a welded mode, a sliding rail (41) is welded on the outer side face of the upright post (4), and the top end of the upright post (4) penetrates through the supporting plate (3);
the sleeve (5), the top end of the sleeve (5) is welded with the bottom surface of the supporting plate (3), a sliding mechanism (51) and an extension plate (52) are arranged on the outer side surface of the sleeve (5), and the extension plate (52) and the sleeve (5) are of an integrated structure formed by casting;
the connecting seat (6), connecting seat (6) is rotationally installed on extension board (52), interface (62) is formed at the bottom of connecting seat (6), transmission shaft (61) has been pegged graft on the top of connecting seat (6), connecting seat (6) are stretched out on the top of transmission shaft (61) and are connected pinion (63), pinion (63) meshes with gear wheel (71), hollow drill bit (64) have been installed to interface (62) bottom ann, hollow drill bit (64) are tubular structure;
the rotating shaft (72) above the driver (7) penetrates through the large gear (71), and the rotating shaft (72) below the driver (7) is rotationally connected with the connecting transverse plate (8);
connect diaphragm (8), install elevating column (81) on the bottom surface of connection diaphragm (8) spiro union, nozzle (82) are installed to the bottom of elevating column (81), nozzle (82) are linked together with pipe (83).
2. A bored pile head blocking and cutting apparatus according to claim 1, wherein: teeth are arranged on the inner wall of the sliding groove (11) and the outer ring surface of the sliding block (42), the sliding groove (11) is meshed with the sliding block (42), and the positioning piece (12) is used for fixing the position of the sliding block (42).
3. A bored pile head blocking and cutting apparatus according to claim 1, wherein: the support plate (3) is of a disc structure, the diameter of the support plate (3) is the same as the outer diameter of the base (1), four through holes (31) are formed in the support plate (3), and the through holes (31) correspond to the connecting seats (6) one by one.
4. A bored pile head blocking and cutting apparatus according to claim 1, wherein: the height of the upright post (4) is larger than that of the pile head (9), the top end of the upright post (4) sequentially penetrates through the sleeve (5) and the supporting plate (3) upwards, and the sliding rail (41) is symmetrical to the upright post (4) in front-back mode.
5. A bored pile head blocking and cutting apparatus according to claim 1, wherein: the sleeve (5) and the extension plate (52) form a T-shaped structure, the extension plate (52) is rotatably provided with a connecting seat (6), the length of the extension plate (52) is smaller than the radius length of the pile head (9), and the extension plate (52) is parallel to the support plate (3).
6. A bored pile head block cutting method using the bored pile head block cutting apparatus according to claim 1, comprising the steps of:
s1, after pouring of the cast-in-place pile is completed, digging foundation soil to expose a pile head (9), and mounting a cutting device on the pile head (9);
s2, installing a hollow drill bit (64), driving a sleeve (5) and a supporting plate (3) to move downwards through a sliding mechanism (51), drilling holes on a pile head (9) by the hollow drill bit (64), adjusting the position of a stand column (4), and drilling holes again by using the hollow drill bit (64) until the holes are communicated to form annular grooves, wherein adjacent drilling areas are partially overlapped, a first pile block (92) and a second pile block (93) are arranged on the pile head (9) of the drilling area, and the first pile block (92) and the second pile block (93) are alternately distributed;
s3, striking a gap between the first pile block (92) and the second pile block (93) by using a pick and a hammer to fracture the first pile block (92) and the second pile block (93), and taking out the fractured first pile block (92) and second pile block (93) to form an annular groove (96);
s4, installing a connecting transverse plate (8), driving the sleeve (5) and the supporting plate (3) to move downwards through the sliding mechanism (51), enabling the lifting column (81) to extend into the groove (96), connecting the high-pressure water flow device through the guide pipe (83), enabling the nozzle (82) to eject out the waterline to cut the fourth pile block (95) and the third pile block (94), and taking out the fourth pile block (95) and the third pile block (94).
7. A method of pile head sectioning and cutting of a bored pile according to claim 6, wherein: the bottom of lifting column (81) inserts recess (96), the inside and outside both sides of recess (96) form fourth pile piece (95) and third pile piece (94) respectively, the parcel has reinforcing bar (91) in third pile piece (94), pile head (9) in recess (96) include first pile piece (92) and second pile piece (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210702817.8A CN115198750B (en) | 2022-06-21 | 2022-06-21 | Cast-in-place pile head blocking and cutting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210702817.8A CN115198750B (en) | 2022-06-21 | 2022-06-21 | Cast-in-place pile head blocking and cutting device and method |
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| Publication Number | Publication Date |
|---|---|
| CN115198750A CN115198750A (en) | 2022-10-18 |
| CN115198750B true CN115198750B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210702817.8A Active CN115198750B (en) | 2022-06-21 | 2022-06-21 | Cast-in-place pile head blocking and cutting device and method |
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| CN109291263A (en) * | 2018-12-14 | 2019-02-01 | 江苏迈辰工业技术有限公司 | A kind of architectural engineering drill |
| CN111794229A (en) * | 2020-08-12 | 2020-10-20 | 陈观荣 | Combined multi-ring multi-hole construction device and method for cutting off cement concrete pile head |
| CN113718773A (en) * | 2021-08-24 | 2021-11-30 | 南京吉欧地下空间科技有限公司 | High-pressure water jet assisted pile pulling equipment and construction method |
| CN114277790A (en) * | 2021-12-16 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Defect bored concrete pile maintenance processing method |
| CN114319360A (en) * | 2021-12-16 | 2022-04-12 | 深圳市工勘岩土集团有限公司 | Method for chiseling middle part of defected cast-in-place pile |
| CN114561951A (en) * | 2022-03-21 | 2022-05-31 | 陈政杰 | Method for excavating and breaking middle part of defective cast-in-place pile |
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2022
- 2022-06-21 CN CN202210702817.8A patent/CN115198750B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03107017A (en) * | 1989-09-21 | 1991-05-07 | Nitto Kensetsu Kk | Pile head treatment method for cast-in-place concrete pile |
| JP2000002089A (en) * | 1997-07-24 | 2000-01-07 | Kajima Corp | Cutting or drilling method and device by high-pressure jet water |
| JP2002115249A (en) * | 2000-10-12 | 2002-04-19 | Geotop Corp | Device and method for treating pile head |
| CN108301401A (en) * | 2018-01-10 | 2018-07-20 | 深圳市工勘岩土集团有限公司 | The construction method of processing bored concrete pile defective section is bored using water mill |
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| CN111794229A (en) * | 2020-08-12 | 2020-10-20 | 陈观荣 | Combined multi-ring multi-hole construction device and method for cutting off cement concrete pile head |
| CN113718773A (en) * | 2021-08-24 | 2021-11-30 | 南京吉欧地下空间科技有限公司 | High-pressure water jet assisted pile pulling equipment and construction method |
| CN114277790A (en) * | 2021-12-16 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Defect bored concrete pile maintenance processing method |
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| CN114561951A (en) * | 2022-03-21 | 2022-05-31 | 陈政杰 | Method for excavating and breaking middle part of defective cast-in-place pile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115198750A (en) | 2022-10-18 |
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