CN114086555B - Construction method for breaking pile head of bored pile foundation - Google Patents
Construction method for breaking pile head of bored pile foundation Download PDFInfo
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- CN114086555B CN114086555B CN202111414129.3A CN202111414129A CN114086555B CN 114086555 B CN114086555 B CN 114086555B CN 202111414129 A CN202111414129 A CN 202111414129A CN 114086555 B CN114086555 B CN 114086555B
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- E—FIXED CONSTRUCTIONS
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- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
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Abstract
The invention belongs to the technical field of pile head breaking of a bored pile foundation, and solves the problems of low precision and complicated working procedures in the conventional pile head breaking. The utility model provides a combined device and construction method for breaking pile head of bored pile foundation, including the baffle of level setting in pile top design elevation department, the middle part of baffle is provided with the feed opening, the upper portion of pile foundation reinforcement cage passes the feed opening, all be fixed with the dog of butt at the baffle lower extreme on a plurality of pile foundation main reinforcements, all overlap on the pile foundation main reinforcements of baffle top and be equipped with the sleeve pipe, sheathed tube lower extreme butt is on the baffle, the upper end activity of baffle is provided with the clamp sleeve of two looks lock, the whole cover that two clamp sleeves enclose is established in the outside of pile foundation reinforcement cage, be provided with the round and prevent two clamp sleeve horizontal migration's spacing post on the baffle, two clamp sleeve enclose whole periphery and are provided with the round mounting hole, be provided with the isolation section of thick bamboo in the mounting hole. The invention has high breaking precision and simple construction process, and can quickly realize the breaking of the pile head part.
Description
Technical Field
The invention belongs to the technical field of pile head breaking of a bored pile foundation, and particularly relates to a construction method for pile head breaking of a bored pile foundation.
Background
The bored pile, also called bored pile, is a pile made by forming pile holes in foundation soil by means of mechanical boring, steel pipe soil squeezing or manual excavation and the like on an engineering site, and placing pile foundation reinforcement cages and pouring concrete in the pile holes.
In order to ensure the pile head quality during pile foundation construction, the pile top elevation is generally higher than the design elevation, when concrete is poured, sediment at the pile bottom and impurities precipitated in slurry in the pouring process can form a slurry with a certain thickness on the surface of the concrete, and after the concrete is solidified, the overcast part is required to be chiseled, so that the steel bars above the pile top elevation are exposed.
The traditional pile head chiseling adopts a manual pile breaking method to remove the ultrahigh part, so that the time is wasted, the removing effect is poor, and the steel bars in the pile foundation are easily damaged in the removing process, thereby affecting the stability of the pile foundation.
Through retrieving, chinese patent CN210887212U discloses a drilling pile foundation is broken and is used aggregate unit, including a plurality of vertical sleeve pipes, the sleeve pipe cover is on the pile foundation reinforcing bar of drilling pile head, leaves the clearance that is used for breaking away from between sleeve pipe and the pile foundation reinforcing bar, and the lower extreme of sleeve pipe is deep 10cm below the pile top design elevation, and drilling pile overcoat is equipped with the fixed bolster, is fixed with a plurality of rings and rock drill on the fixed bolster, and the aircraft nose circumference equipartition of rock drill is around drilling pile, and is located drilling pile top design elevation department.
The device breaks the pile head through handheld concrete cutting machine, rock drill, but in pile head breaking process, the pile top sets up the survey and drawing of elevation line, and the trompil of pile head breaking position all is behind concrete placement, can have the problem that the precision is insufficient at cutting and pore-forming in-process, and concrete cutting machine, rock drill installation, operation and the loaded down with trivial details slowness of process of moving out have certain security risk moreover.
Therefore, a combined device for breaking pile heads of a bored pile foundation with high breaking precision and simple working procedures and a pile head breaking construction method are urgently needed to be researched.
Disclosure of Invention
Aiming at the defects that in the pile head breaking process, the pile top is provided with the mapping of elevation lines, the holes at the pile head breaking positions are all in concrete pouring, the problem of insufficient precision possibly exists in the cutting and pore-forming processes, the process of installing, operating and moving out a concrete cutting machine and a rock drill is tedious and slow, and certain safety risks exist, the invention aims to provide a combined device for breaking the pile head of a bored pile foundation and a construction method for breaking the pile head.
In order to achieve the above purpose, the invention adopts the following technical scheme that the construction method for breaking the pile head of the foundation of the bored pile is carried out by means of a combined device for breaking the pile head of the foundation of the bored pile, the combined device for breaking the pile head of the foundation of the bored pile comprises a baffle plate horizontally arranged at the designed elevation of the pile top, a blanking opening is arranged in the middle of the baffle plate, the upper part of a pile foundation reinforcement cage penetrates through the blanking opening, a plurality of pile foundation main ribs are fixedly provided with baffle blocks which are abutted to the lower end of the baffle plate, sleeves are sleeved on the pile foundation main ribs above the baffle plate, the lower ends of the sleeves are abutted to the baffle plate, two clamping sleeves are movably arranged at the upper end of the baffle plate, the whole body surrounded by the two clamping sleeves is sleeved outside the pile foundation reinforcement cage, a circle of limiting post which prevents the two clamping sleeves from horizontally moving is arranged on the baffle plate, a circle of mounting hole is arranged at the periphery of the whole body surrounded by the two clamping sleeves, a separation cylinder is arranged in the mounting hole, and the front end of the separation cylinder is sealed and extends inwards to the position adjacent to the central axis;
the baffle plate is reinforced on the stop block through bolts, a circle of sharp corners extending outwards are arranged on the periphery of the discharging opening, pile foundation main ribs correspond to the sharp corners one by one and are clamped in the sharp corners, and the bottom ends of the sleeves are abutted to the corresponding sharp corners; the isolation cylinder is horizontally arranged and provided with a conical tip, an outward extending flange is arranged at the outer port of the isolation cylinder, and a reinforcing block matched with the inner diameter of the isolation cylinder is embedded in the isolation cylinder; the positions, corresponding to the limiting columns, on the periphery of the partition plate are provided with clamping rings, the limiting columns are inserted into the clamping rings, and the heads are clamped at the upper ends of the clamping rings.
The method specifically comprises the following steps:
s1: constructing a bored pile, and lowering a reinforcement cage; according to the design requirement of the hole pile, a drilling machine is reasonably selected to drill the hole pile, the hole pile is excavated and cleaned, a stop block is fixed on a pile foundation main reinforcement of a pile foundation reinforcement cage, the position where a pile head is required to be broken after the hole pile is constructed is accurately determined, the upper end of the stop block is guaranteed to be level with the design elevation of the pile top, the pile foundation reinforcement cage is transported to the position where the hole pile is completed, and the pile foundation reinforcement cage is lowered and primarily fixed;
s2: measuring and rechecking, and installing a partition plate; rechecking the position and the height of the lowered pile foundation reinforcement cage, accurately rechecking the pile head position after the hole pile is formed after rechecking, lowering a baffle plate after the error meets the standard requirement, and connecting and locking the baffle plate with a stop block through a bolt;
s3: mounting a jacket and an isolation cylinder; locking and closing the two jackets through bolts, lowering the whole of the two jacket surrounding areas into the horizontal limiting space of the limiting column surrounding areas, and inserting the isolation cylinder into the mounting hole on the jacket;
s4: installing a sleeve; a vertical sleeve is arranged on the pile foundation main rib, and the lower end of the sleeve is abutted on the partition plate;
s5: pouring concrete; placing down a conduit required by hole pile casting through a blanking opening of a partition plate, and casting hole pile concrete according to a construction scheme, wherein the casting concrete is positioned between the upper end of the partition plate and the upper end of a jacket;
s6: removing the jacket and the isolation cylinder; after the pile foundation concrete is initially set, excavating soil around the pile foundation, removing the jacket wrapped on the outer side of the pile foundation, removing the isolation cylinder firstly, and then removing the jacket;
s7: expanding and separating the part of the hole pile to be broken; separating the pile head to be separated from the pile foundation by using a hydraulic expander in the hole of the extracted isolation cylinder;
s8: separating the separated pile heads; after the pile head is separated from the pile foundation, separating the fixing parts related to the baffle plate and the baffle block, loosening the baffle plate again, and hanging the broken pile head by using a crane to hang the pull ring.
Preferably, the feed opening is located the central point of baffle, and the isolation cylinder is located between two adjacent pile foundation main tendons, and the pointed end points to the axis of baffle.
Preferably, the spacer is bolted to the stop.
Preferably, the two jackets are semi-annular, and the ends of the two jackets are respectively provided with a matched groove and a matched bump and are fixedly connected through a bolt.
Preferably, the periphery of the partition plate is provided with hanging lugs which are arranged oppositely, and hanging rings are arranged in the hanging lugs in a penetrating manner.
Preferably, the separator, the sleeve, the jacket and the isolation cylinder are coated with an isolating liquid or lubricating oil before concrete is poured.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has high breaking precision, simple construction procedure and capability of rapidly realizing the breaking of the pile head part;
2. according to the invention, the partition board is arranged on the pile foundation main reinforcement, and is positioned at the designed elevation of the pile top, so that the pile head to be broken is separated from the pile body in advance, and a concrete cutting machine is not required to be used for cutting after concrete pouring;
3. according to the invention, the isolation cylinder is arranged on the jacket, so that holes required by the hydraulic expansion machine can be formed during concrete pouring, and drilling of holes required by the hydraulic expansion machine by using a rock drill after concrete pouring is not required;
4. the mechanical tool of the invention has less use and avoids potential safety hazards in operation.
None of the parts of the device are the same as or can be implemented using prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an installation schematic of the present embodiment;
FIG. 2 is a top view of the present embodiment;
fig. 3 is an explosion diagram of the present embodiment.
In the figure: 1-a separator; 1.1-a feed opening; 1.2-hanging lugs; 1.3-snap ring; 2-a stop block; 3-sleeve; 4-jacket; 4.1-mounting holes; 5-a limit column; 6, an isolation cylinder; 6.1-flanges; 7-reinforcing blocks; 8-a bolt; 9-hanging rings; 10-pile foundation reinforcement cage; 11-pile foundation main tendons.
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.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The present invention provides an embodiment:
as shown in fig. 1 and 2, a combined device for breaking pile heads of a bored pile foundation comprises a partition board 1 horizontally arranged at a pile top design elevation, wherein a blanking opening 1.1 is arranged in the middle of the partition board 1, the upper part of a pile foundation reinforcement cage 10 penetrates through the blanking opening 1.1, a plurality of pile foundation main ribs 11 are fixedly provided with baffle blocks 2 abutted to the lower ends of the partition board 1, the partition board 1 is reinforced on the baffle blocks 2 through bolts, sleeves 3 are sleeved on the pile foundation main ribs 11 above the partition board 1, the lower ends of the sleeves 3 are abutted to the partition board 1, two clamping sleeves 4 are movably arranged at the upper ends of the partition board 1, the whole body surrounded by the two clamping sleeves 4 is sleeved outside the pile foundation reinforcement cage 10, a circle of limiting columns 5 for preventing the two clamping sleeves 4 from horizontally moving are arranged on the partition board 1, a circle of mounting holes 4.1 are formed in the whole periphery of the two clamping sleeves 4, a spacer cylinder 6 is arranged in the mounting holes 4.1, and the front ends of the spacer cylinder 6 are sealed and extend inwards to the position adjacent to the central axis of the partition board 1.
As shown in fig. 3, the partition plate 1 can isolate the pile foundation reinforcement cage 10 at the designed elevation of the pile top, so that the pile post after final casting is divided into an upper part and a lower part, the post is convenient to disassemble, the periphery of the blanking opening 1.1 is provided with a circle of sharp corners extending outwards, the pile foundation main ribs 11 are in one-to-one correspondence with the sharp corners and are clamped in the sharp corners, the sleeve 3 can be a pvc pipe and is abutted to the corresponding sharp corners, the sleeve 3 can be quickly installed through the arrangement of the sharp corners, the sleeve 3 can wrap the upper part of the pile foundation main ribs 11, the pile foundation main ribs 11 are isolated from casting materials when casting is performed, the shape of the blanking opening 1.1 is a hexagonal star, and the shape of the corresponding blanking opening is selected according to the number of the pile foundation main ribs 11.
The isolation cylinder 6 is horizontally arranged and is provided with a conical tip, an outwards extending flange 6.1 is arranged at the outer port of the isolation cylinder 6, a reinforcing block 7 matched with the inner diameter of the isolation cylinder 6 is embedded in the isolation cylinder 6, the shape of the isolation cylinder 6 is matched with the front end of the hydraulic expander, the reinforcing block 7 can increase the rigidity of the isolation cylinder 6, concrete is prevented from extruding and deforming the isolation cylinder 6 when pouring, a rope can be conveniently sleeved on the isolation cylinder 6 by arranging the flange 6.1, the isolation cylinder 6 is conveniently pulled out of a pile foundation by pulling the rope in the later stage, after the castable is hardened, the isolation cylinder 6 can be taken out, a preformed hole is formed in the pile foundation, and the hydraulic expander can be placed in the formed preformed hole, so that the pile head is separated from the pile foundation.
In order to make the structure more stable and compact, the feed opening 1.1 is located the central point of baffle 1 and puts, and isolation cylinder 6 is located between two adjacent pile foundation main muscle 11, and pointed to the axis of baffle 1, and isolation cylinder 6 that corresponds in this embodiment is six, and the interval sets up on two whole that the cover 4 encloses, the installation and the operation of being convenient for hydraulic expander.
The two jackets 4 are semi-annular, the ends of the two jackets 4 are respectively provided with a matched groove and a matched lug, and are fixedly connected through bolts, the jackets 4 are semi-annular in the embodiment, the two ends of one jacket 4 are provided with the lug, the two ends of the other jacket 4 are provided with grooves matched with the lug, and the grooves and the lug penetrate through bolts for connection.
Before the pile is poured, the invented device and pile foundation reinforcement cage 10 are positioned and fixed, so that when the concrete is poured, the main part of the pile foundation is divided into an upper part and a lower part, and after the pile foundation is poured, the pile heads are separated by utilizing a hydraulic expansion machine.
The invention discloses a construction method for breaking pile heads of a bored pile foundation, which specifically comprises the following steps:
s1: constructing a bored pile, and lowering a reinforcement cage; according to the design requirement of the hole pile, a drilling machine is reasonably selected to drill the hole pile, the hole pile is excavated and cleaned, a stop block 2 is fixed on a pile foundation main rib 11 of a pile foundation reinforcement cage 10, the position where a pile head needs to be broken after the hole pile is constructed is accurately determined, the upper end of the stop block 2 is level with the designed elevation of the pile top, the pile foundation reinforcement cage 10 is transported to the position where the hole pile is completed, and the pile foundation reinforcement cage 10 is lowered and primarily fixed;
s2: measuring and rechecking, and installing a partition board 1; rechecking the position and the height of the lowered pile foundation reinforcement cage 10, accurately rechecking the pile head position after the hole pile is formed after rechecking, lowering the partition board 1 after the error meets the standard requirement, and connecting and locking the partition board with the stop block 2 through bolts;
s3: a jacket 4 and an isolation cylinder 6 are arranged; the two jackets 4 are locked and closed through the bolt, the whole of the surrounding areas of the two jackets 4 is lowered into the horizontal limiting space of the surrounding areas of the limiting column 5, the isolation cylinder 6 is inserted into the mounting hole 4.1 on the jacket 4, and the size of the jacket 4 is preliminarily larger than the designed pile diameter and is matched with the pile diameter of the preliminarily excavated pile;
s4: installing a sleeve 3; a vertical sleeve 3 is arranged on a pile foundation main rib 11, and the lower end of the sleeve 3 is abutted on a partition board 1;
s5: pouring concrete; the conduit required by the pouring of the hole pile is lowered through the blanking opening 1.1 of the partition board 1, and the pouring of the hole pile concrete is carried out according to the construction scheme, wherein the height of the poured concrete is between the upper end of the partition board 1 and the upper end of the jacket 4;
s6: removing the jacket 4 and the isolation cylinder 6; after the pile foundation concrete is initially set, excavating soil around the pile foundation, removing the jacket 4 wrapped on the outer side of the pile foundation, removing the isolation cylinder 6 firstly, and then removing the jacket 4;
s7: expanding and separating the part of the hole pile to be broken; in the hole of the extracted isolation cylinder 6, the pile head to be separated is separated from the pile foundation by using a hydraulic expander;
s8: separating the separated pile heads; after the pile head is separated from the pile foundation, the fixing parts related to the baffle plate 1 and the baffle block 2 are separated, the baffle plate 1 is loosened again, and the broken pile head is lifted out by using a crane to hang a pull ring.
The equipment such as the partition plate 1, the sleeve 3, the jacket 4, the isolation cylinder 6 and the like which are in contact with the concrete needs to be smeared with isolation liquid or lubricating oil before the concrete is poured, so that the later dismantling is convenient.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. A construction method for breaking pile heads of a bored pile foundation is characterized by comprising the following steps: the combined device for breaking the pile head of the bored pile foundation is used for carrying out construction of breaking the pile head of the bored pile foundation, the combined device for breaking the pile head of the bored pile foundation comprises a baffle plate (1) horizontally arranged at the designed elevation of the pile top, a blanking port (1.1) is arranged in the middle of the baffle plate (1), the upper part of the pile foundation reinforcement cage penetrates through the blanking port (1.1), a stop block (2) abutted to the lower end of the baffle plate (1) is fixed on each pile foundation main rib, sleeves (3) are sleeved on each pile foundation main rib above the baffle plate (1), the lower ends of the sleeves (3) are abutted to the baffle plate (1), two clamping sleeves (4) are movably arranged at the upper ends of the baffle plate (1), the whole body surrounded by the two clamping sleeves (4) is sleeved on the outer side of the pile foundation reinforcement cage, a circle of limiting column (5) for preventing the two clamping sleeves (4) from horizontally moving is arranged on the baffle plate (1), a circle of mounting holes (4.1) are formed in the periphery of the whole body surrounded by the two clamping sleeves (4), the mounting holes (4.1) are abutted to the baffle plate (6), and the inner ends of the two sleeves (4.1) are arranged in the isolation cylinder (6) and extend to the front end of the baffle plate (6) to be adjacent to the front end of the baffle plate (1);
the periphery of the blanking opening (1.1) is provided with a circle of sharp corners extending outwards, pile foundation main ribs are in one-to-one correspondence with the sharp corners and are clamped in the sharp corners, and the bottom end of the sleeve (3) is abutted to the corresponding sharp corners; the isolation cylinder (6) is horizontally arranged and provided with a conical tip, an outward extending flange (6.1) is arranged at the outer port of the isolation cylinder (6), and a reinforcing block (7) matched with the inner diameter of the isolation cylinder (6) is embedded in the isolation cylinder; the positions, corresponding to the limit columns (5), on the periphery of the partition plate (1) are provided with clamping rings (1.3), the limit columns (5) are inserted into the clamping rings (1.3), and the heads of the limit columns are clamped at the upper ends of the clamping rings (1.3);
the method specifically comprises the following steps:
s1: constructing a bored pile, and lowering a reinforcement cage; according to the design requirement of the hole pile, a drilling machine is reasonably selected to drill the hole pile, the hole pile is excavated and cleaned, a stop block (2) is fixed on a pile foundation main reinforcement of a pile foundation reinforcement cage, the position where a pile head needs to be broken after the hole pile is constructed is accurately determined, the upper end of the stop block (2) is level with the designed elevation of the pile top, the pile foundation reinforcement cage is transported to the position where the hole pile is completed, and the pile foundation reinforcement cage is lowered and primarily fixed;
s2: measuring and rechecking, and installing a partition board (1); rechecking the position and the height of the lowered pile foundation reinforcement cage, accurately rechecking the pile head position after the hole pile is formed after rechecking, lowering the partition board (1) after the error meets the standard requirement, and connecting and locking the partition board and the stop block (2) through bolts;
s3: a mounting jacket (4) and an isolation cylinder (6); the two jackets (4) are locked and closed through the bolt, the whole of the surrounding areas of the two jackets (4) is lowered into the horizontal limiting space of the surrounding areas of the limiting column (5), and the isolation cylinder (6) is inserted into the mounting hole (4.1) on the jacket (4);
s4: a mounting sleeve (3); a vertical sleeve (3) is arranged on the pile foundation main reinforcement, and the lower end of the sleeve (3) is abutted on the partition board (1);
s5: pouring concrete; placing down a conduit required by hole pile pouring through a blanking opening (1.1) of the partition board (1), and pouring hole pile concrete according to a construction scheme, wherein the height of the poured concrete is between the upper end of the partition board (1) and the upper end of the jacket (4);
s6: removing the jacket (4) and the isolation cylinder (6); after the pile foundation concrete is initially set, excavating soil around the pile foundation, removing the jacket (4) wrapped on the outer side of the pile foundation, removing the isolation cylinder (6) firstly, and then removing the jacket (4);
s7: expanding and separating the part of the hole pile to be broken; separating the pile head to be separated from the pile foundation by using a hydraulic expander in the hole of the extracted isolation cylinder (6);
s8: separating the separated pile heads; after the pile head is separated from the pile foundation, separating the fixing parts related to the baffle plate (1) and the baffle block (2), loosening the baffle plate (1) again, and hanging the broken pile head by using a crane to hang a pull ring.
2. The bored pile foundation pile head breaking construction method according to claim 1, wherein: the blanking port (1.1) is located in the center of the partition board (1), the isolation barrel (6) is located between two adjacent pile foundation main ribs, and the tip points to the central axis of the partition board (1).
3. The bored pile foundation pile head breaking construction method according to claim 1, wherein: the partition plate (1) is reinforced on the stop block (2) through bolts.
4. The bored pile foundation pile head breaking construction method according to claim 1, wherein: the two jackets (4) are semi-annular, and the ends of the two jackets (4) are respectively provided with matched grooves and matched convex blocks and are fixedly connected through the bolts (8).
5. The bored pile foundation pile head breaking construction method according to claim 1, wherein: the periphery of the partition board (1) is provided with hanging lugs (1.2) which are oppositely arranged, and hanging rings (9) are arranged in the hanging lugs (1.2) in a penetrating mode.
6. The bored pile foundation pile head breaking construction method according to claim 1, wherein: the partition board (1), the sleeve (3), the jacket (4) and the isolation cylinder (6) need to be coated with isolation liquid or lubricating oil before concrete pouring.
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| CN202111414129.3A CN114086555B (en) | 2021-11-25 | 2021-11-25 | Construction method for breaking pile head of bored pile foundation |
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| CN115182334A (en) * | 2022-07-21 | 2022-10-14 | 中国五冶集团有限公司 | Construction method of rotary-excavated cast-in-place pile under miscellaneous fill high-backfill geological condition |
| CN115217097A (en) * | 2022-07-21 | 2022-10-21 | 中国五冶集团有限公司 | Rotary excavating cast-in-place pile under miscellaneous fill high backfill geological condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102587380A (en) * | 2012-02-08 | 2012-07-18 | 湖南省第二工程有限公司 | Construction method for wholly removing drilling pile head |
| CN105297729B (en) * | 2015-11-23 | 2017-12-01 | 中国葛洲坝集团第六工程有限公司 | Bridge pile foundation pile head breaking device and method |
| CN106759336A (en) * | 2016-12-19 | 2017-05-31 | 中交路桥建设有限公司 | A kind of cast-in-situ bored pile quickly abolishes pile crown construction method |
| CN106592591A (en) * | 2017-01-23 | 2017-04-26 | 中交三公局第工程有限公司 | Drilling pile head overall removal construction method |
| CN108411918A (en) * | 2018-03-27 | 2018-08-17 | 中国冶集团有限公司 | Pore-creating filling pile pile crown abolishes device and its construction method |
| CN110306537A (en) * | 2019-07-23 | 2019-10-08 | 中国一冶集团有限公司 | Filling pile head construction method |
| CN210887212U (en) * | 2019-09-25 | 2020-06-30 | 中建六局安装工程有限公司 | Combined device for breaking pile head of bored pile foundation |
| CN211646391U (en) * | 2019-12-06 | 2020-10-09 | 荆州市华升新型材料股份有限公司 | Auxiliary device for breaking pile head of concrete cast-in-place pile |
| CN111218936A (en) * | 2019-12-11 | 2020-06-02 | 山东鲁桥建设有限公司 | Construction method for rapidly and nondestructively breaking pile head |
| CN112761154A (en) * | 2020-12-31 | 2021-05-07 | 中交一公局第二工程有限公司 | Method for breaking pile head of concrete cast-in-place pile |
| CN214832668U (en) * | 2021-04-25 | 2021-11-23 | 河南省公路工程局集团有限公司 | Pile head integral breaking system for large-diameter bored pile |
| CN113089671A (en) * | 2021-04-25 | 2021-07-09 | 河南省公路工程局集团有限公司 | Pile head integral breaking system for large-diameter bored pile and construction method |
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