CN114086555A - Combined device for breaking pile head of bored pile foundation and pile head breaking construction method - Google Patents
Combined device for breaking pile head of bored pile foundation and pile head breaking construction method Download PDFInfo
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- CN114086555A CN114086555A CN202111414129.3A CN202111414129A CN114086555A CN 114086555 A CN114086555 A CN 114086555A CN 202111414129 A CN202111414129 A CN 202111414129A CN 114086555 A CN114086555 A CN 114086555A
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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
- 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 existing pile head breaking. The utility model provides a drilling pile foundation breaks off composite set for pile head and breaks off pile head construction method, including the baffle of level setting at pile bolck design elevation place, the middle part of baffle is provided with the feed opening, the feed opening is passed on pile foundation steel reinforcement cage's upper portion, all be fixed with the dog of butt at the baffle lower extreme on a plurality of pile foundation main muscle, all overlap on the pile foundation main muscle 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 cover of two looks locks, the whole cover that two clamp covers enclose is established in the outside of pile foundation steel reinforcement cage, be provided with the spacing post that the round prevented two clamp cover horizontal migration on the baffle, the holistic periphery that two clamp covers enclose is provided with the round mounting hole, be provided with an isolation section of thick bamboo in the mounting hole. The pile head breaking device is high in breaking precision, simple in construction process and capable of quickly breaking the pile head.
Description
Technical Field
The invention belongs to the technical field of pile head breaking of a bored pile foundation, and particularly relates to a combined device for the pile head breaking of the bored pile foundation and a pile head breaking construction method.
Background
A bored pile, also called a bored pile, is a pile formed by forming a pile hole in foundation soil through mechanical drilling, steel pipe soil extrusion, or manual excavation, and placing a pile foundation reinforcement cage and cast-in-place concrete therein.
In order to guarantee pile head quality in pile foundation construction, pile top elevation generally all will be higher than the design elevation, and when the concreting, the sediment at the bottom of the pile and the impurity of depositing in the mud of the filling process can form the laitance of certain thickness on the concrete surface, and after the concrete solidifies, need to chisel the partial chisel of surpassing the irrigation, expose the reinforcing bar more than pile top elevation.
The superelevation part is rejected to the broken stake method of adoption manual work when traditional chisel removes the pile head, and the waste time, the effect of rejecting are poor, and cause destruction to the reinforcing bar in the pile foundation easily at the rejection in-process to influence the stability of pile foundation.
Through the retrieval, chinese patent CN210887212U discloses a combination unit for removing pile head on a bored pile foundation, including a plurality of vertical sleeves, the sleeves are sleeved on the pile foundation reinforcing bars of the bored pile head, a gap for separation is left between the sleeves and the pile foundation reinforcing bars, and the lower end of the sleeve goes deep into 10cm below the designed elevation of the pile top, the bored pile is sleeved with a fixed support, the fixed support is fixed with a plurality of rings and rock drills, the circumferences of the heads of the rock drills are uniformly distributed around the bored pile, and the heads are located at the designed elevation of the bored pile top.
The device breaks the pile head through hand-held type concrete cutting machine, rock drill, but in the pile head process of breaking, the pile bolck sets up the survey and drawing of marking line, and the trompil that the pile head broke the position all is after concrete placement, may have the not enough problem of precision in cutting and pore-forming process, and the process that concrete cutting machine, rock drill installation, operation and shifted out is loaded down with trivial details slowly in addition, has certain safety risk.
Therefore, a combination device for breaking pile heads of a bored pile foundation and a construction method for breaking pile heads, which have high breaking accuracy and simple processes, are in urgent need of research.
Disclosure of Invention
The invention aims to provide a combination device for breaking a pile head of a drilling pile foundation and a construction method for breaking the pile head, wherein a partition plate is arranged on a main rib of a pile foundation and is positioned at the designed elevation position of the pile top, so that the pile head to be broken is separated from a pile body in advance, and holes required by a hydraulic expansion machine can be formed by arranging an isolation cylinder on a jacket during concrete pouring.
In order to achieve the purpose, the invention adopts the following technical scheme that the combined device for breaking the pile head of the bored pile foundation comprises a partition plate horizontally arranged at the designed elevation position of the pile top, a feed opening is formed in the middle of the partition plate, the upper part of a pile foundation reinforcement cage penetrates through the feed opening, a plurality of pile foundation main ribs are respectively and fixedly provided with a stop block which is abutted against the lower end of the partition plate, sleeve pipes are respectively sleeved on the pile foundation main ribs above the partition plate, the lower end of each sleeve pipe is abutted against the partition plate, the upper end of the partition plate is movably provided with two clamping sleeves which are buckled, the whole body formed by the two clamping sleeves is sleeved on the outer side of the pile foundation reinforcement cage, a circle of limiting columns for preventing the two clamping sleeves from horizontally moving are arranged on the partition plate, a circle of mounting holes are formed in the periphery of the whole body formed by the two clamping sleeves, an isolation cylinder is arranged in each mounting hole, and the front end of the isolation cylinder is sealed and extends inwards to the position close to the central axis of the partition plate.
Preferably, the baffle passes through the bolt fastening on the dog, has the closed angle of the outside extension of round in the periphery of feed opening, pile foundation main reinforcement and closed angle one-to-one, and the card is established in the closed angle, and sheathed tube bottom butt is in the closed angle department that corresponds.
Preferably, 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.
Preferably, the feed opening is located the central point of baffle and puts, and the isolation section of thick bamboo is located between two adjacent pile foundation owner muscle, and the axis of pointed end directional baffle.
Preferably, the partition is fastened to the stopper by means of bolts.
Preferably, the two clamping sleeves are semi-annular, and the ends of the two clamping sleeves are respectively provided with a groove and a bump which are matched with each other and are fixedly connected through a bolt.
Preferably, the periphery of the partition board is provided with oppositely arranged hanging lugs, and hanging rings are arranged in the hanging lugs in a penetrating mode.
Preferably, the position that corresponds spacing post on the periphery of baffle all is provided with the snap ring, and spacing post pegs graft in the snap ring, and the head card is established at the snap ring upper end.
In addition, the invention also provides a construction method for breaking the pile head of the bored pile foundation, which comprises the following steps:
s1: drilling pile construction, and putting down a reinforcement cage; according to the design requirements of hole piles, drilling of the hole piles is reasonably selected by a drilling machine, hole pile excavation and hole cleaning are completed, a baffle plate is fixed on a pile foundation main rib of a pile foundation reinforcement cage, the position where a pile head needs to be broken after the hole piles are constructed is accurately determined, the upper end of the baffle plate is ensured to be flush with the designed elevation of a pile top, the pile foundation reinforcement cage is transported to the position where the hole piles are finished, and the pile foundation reinforcement cage is lowered and preliminarily fixed;
s2: measuring and rechecking, and installing a partition plate; rechecking the position and height of the lowered pile foundation reinforcement cage, accurately rechecking the pile head position after hole pile hole forming after rechecking is finished, lowering the partition plate after the error meets the standard requirement, and connecting and locking the partition plate with the baffle plate through bolts;
s3: installing a jacket and an isolation cylinder; locking and closing the two jackets through the bolts, putting the whole body of the enclosed wall of the two jackets into a horizontal limiting space of the enclosed wall of the limiting column, and inserting the isolating 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 against the partition plate;
s5: pouring concrete; placing down a guide pipe required by hole pile pouring through a feed opening of the partition plate, 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 plate and the upper end of the jacket;
s6: removing the jacket and the isolation cylinder; after the pile foundation concrete is initially set, excavating soil around the pile foundation, dismantling a jacket wrapped outside the pile foundation, dismantling the isolation cylinder firstly, and then dismantling the jacket;
s7: expanding and separating the part of the pile to be broken; separating the pile head to be separated from the pile foundation in the hole with the isolation cylinder pulled out by using a hydraulic expander;
s8: adjusting away the separated pile head; after the pile head is separated from the pile foundation, the partition plate is separated from the fixing piece related to the baffle plate, the partition plate is loosened again, and the broken pile head is hung out by using a crane to hang the pull ring.
Preferably, the partition, the sleeve, the jacket and the isolation cylinder are coated with an isolation liquid or lubricating oil before concrete pouring.
Compared with the prior art, the invention has the following beneficial effects:
1. the pile head breaking device is high in breaking precision, simple in construction process and capable of quickly breaking the pile head;
2. according to the invention, the partition plate is arranged on the pile foundation main rib 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 isolating cylinder is arranged on the jacket, so that the hole required by the hydraulic expander can be formed during concrete pouring, and a rock drill is not required to drill the hole required by the hydraulic expander after the concrete pouring;
4. the invention has less mechanical tools and avoids the potential safety hazard in operation.
The parts of the device not involved 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 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the installation of the present embodiment;
FIG. 2 is a top view of the present embodiment;
fig. 3 is an exploded view of the present embodiment.
In the figure: 1-a separator; 1.1-a feed opening; 1.2-hanging ears; 1.3-snap ring; 2-a baffle plate; 3-sleeving a pipe; 4-jacket; 4.1-mounting holes; 5-a limiting column; 6-an isolation cylinder; 6.1-flange; 7-a reinforcing block; 8-a bolt; 9-a hoisting ring; 10-pile foundation reinforcement cage; and 11-pile foundation main reinforcement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The present invention provides an embodiment:
as shown in figures 1 and 2, the combined device for breaking the pile head of the bored pile foundation comprises a partition plate 1 horizontally arranged at the designed elevation of the pile top, a feed opening 1.1 is arranged in the middle of the partition plate 1, the upper part of a pile foundation reinforcement cage 10 penetrates through the feed opening 1.1, a plurality of pile foundation main reinforcements 11 are respectively fixed with a stop block 2 butted with the lower end of the partition plate 1, the partition plate 1 is fixed on the stop block 2 through bolts, the pile foundation main reinforcements 11 above the partition plate 1 are respectively sleeved with a sleeve 3, the lower end of the sleeve 3 is butted on the partition plate 1, the upper end of the partition plate 1 is movably provided with two clamping sleeves 4 which are buckled with each other, the whole body surrounded by the two clamping sleeves 4 is sleeved outside the pile foundation clamping sleeve 10, the partition plate 1 is provided with a circle of limiting columns 5 for preventing the two clamping sleeves 4 from horizontally moving, the periphery of the whole body surrounded by the two clamping sleeves 4 is provided with a circle of mounting holes 4.1, an isolation cylinder 6 is arranged in the mounting holes 4.1, the front end of the isolation cylinder 6 is sealed, and extends inwardly to adjacent the central axis of the partition 1.
As shown in fig. 3, baffle 1 can keep apart pile foundation steel reinforcement cage 10 at pile bolck design elevation place, make two parts about the stake after finishing pouring at last falls into, be convenient for demolish of later stage pile head, the closed angle that the round outwards extended has in feed opening 1.1's the periphery, pile foundation main muscle 11 and closed angle one-to-one, and the card is established in the closed angle, sleeve pipe 3 can be the pvc pipe, the butt is in the closed angle department that corresponds, setting through the closed angle, make the installation that sleeve pipe 3 can be quick, sleeve pipe 3 can wrap up pile foundation main muscle 11 upper portion, make pile foundation main muscle 11 and pouring material keep apart when pouring, the pile foundation main muscle 11 that this embodiment corresponds is 6 of round, so feed opening 1.1's shape is the hexagonal star, the shape of the feed opening that corresponds is selected according to pile foundation main muscle 11's quantity.
Keep apart 6 levels of a section of thick bamboo and set up, and conical pointed end has, the outer port department of keeping apart 6 is provided with flange 6.1 to outside extension, keep apart 6 embedded have with its internal diameter assorted boss 7, keep apart the shape of a section of thick bamboo 6 and the front end cooperation of hydraulic expansion machine, boss 7 can increase the rigidity of keeping apart 6, avoid concrete will keep apart 6 extrusion deformation of a section of thick bamboo when pouring, can conveniently establish the rope at the cover on keeping apart 6 through setting up flange 6.1, it will keep apart 6 follow pile foundations and extract through the pulling rope in the later stage to be convenient for, treat the casting hardening back, can take out keep apart 6, form the preformed hole in the pile foundations make it, the hydraulic expansion machine can be placed in the preformed hole of formation, thereby realize separating the pile head from the pile foundations.
In order to make the structure more stable compact, feed opening 1.1 is located the central point of baffle 1 and puts, keeps apart a section of thick bamboo 6 and is located between two adjacent pile foundation owner muscle 11, and pointed end directional baffle 1's axis, and the isolation section of thick bamboo 6 that corresponds in this embodiment is six, and the interval setting is on two whole that press from both sides the cover 4 and enclose, the installation and the operation of the hydraulic pressure expander of being convenient for.
Two clamp covers 4 are the semicircle ring-type, and two tip that press from both sides cover 4 are provided with assorted recess and lug respectively, and fix through the bolt connection, and clamp cover 4 is the semicircle ring-type in this embodiment, and one of them both ends of pressing from both sides cover 4 have the lug, and another both ends of pressing from both sides cover 4 have the recess that matches with the lug, penetrate the bolt connection in recess and the lug.
Before the hole pile is poured, the position of the device and the pile foundation reinforcement cage 10 is determined and fixed, so that when concrete is poured, the main part of the pile foundation concrete is divided into an upper part and a lower part, and after the pile foundation is poured, a hydraulic expansion machine is used for separating a pile head.
The invention relates to a construction method for breaking pile heads of a bored pile foundation, which specifically comprises the following steps:
s1: drilling pile construction, and putting down a reinforcement cage; according to the design requirements of hole piles, drilling of the hole piles is reasonably selected by a drilling machine, hole pile excavation and hole cleaning are completed, a baffle plate 2 is fixed on a pile foundation main rib 11 of a pile foundation reinforcement cage 10, after hole pile construction is accurately determined, the position where a pile head needs to be broken is ensured, the upper end of the baffle plate 2 is flush with the designed elevation of a pile top, the pile foundation reinforcement cage 10 is transported to the position where the hole piles are completed, and the pile foundation reinforcement cage 10 is placed and primarily fixed;
s2: performing measurement and rechecking, and installing a partition plate 1; rechecking the position and height of the lowered pile foundation reinforcement cage 10, after the rechecking is finished, accurately rechecking the pile head position after the hole pile is formed, lowering the partition plate 1 after the error meets the standard requirement, and connecting and locking the partition plate with the baffle plate 2 through bolts;
s3: installing a jacket 4 and an isolation cylinder 6; locking and closing the two jackets 4 through bolts, putting the whole body enclosed by the two jackets 4 into a horizontal limiting space enclosed by a limiting column 5, inserting an isolation cylinder 6 into a mounting hole 4.1 on the jackets 4, wherein the size of each jacket 4 is preliminarily larger than the designed pile diameter and is matched with the pile diameter of the pile with the preliminarily excavated hole;
s4: installing the sleeve 3; a vertical sleeve 3 is arranged on the pile foundation main reinforcement 11, and the lower end of the sleeve 3 is abutted against the partition plate 1;
s5: pouring concrete; placing down a conduit required by hole pile pouring through a feed opening 1.1 of a partition plate 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 plate 1 and the upper end of a 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, dismantling the jacket 4 wrapped outside the pile foundation, dismantling the isolation cylinder 6, and then dismantling the jacket 4;
s7: expanding and separating the part of the pile to be broken; separating the pile head to be separated from the pile foundation by using a hydraulic expander in the hole with the isolation cylinder 6 pulled out;
s8: adjusting away the separated pile head; after the pile head is separated from the pile foundation, the partition plate 1 is separated from the fixing piece related to the baffle plate 2, the partition plate 1 is loosened again, and the broken pile head is hung out by using a crane to hang the pull ring.
The partition plate 1, the sleeve 3, the jacket 4, the isolation cylinder 6 and other devices which are in contact with the concrete need to be coated with isolation liquid or lubricating oil before the concrete is poured, so that later-stage dismantling is facilitated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a combination unit for pile head is abolished to drilling pile foundation which characterized in that: comprises a partition board (1) horizontally arranged at the designed elevation position of a pile top, wherein a feed opening (1.1) is arranged in the middle of the partition board (1), the upper part of a pile foundation reinforcement cage penetrates through the feed opening (1.1), a plurality of pile foundation main reinforcements are respectively and fixedly provided with a stop block (2) which is abutted against the lower end of the partition board (1), the pile foundation main reinforcements above the partition board (1) are respectively sleeved with a sleeve (3), the lower end of the sleeve (3) is abutted against the partition board (1), the upper end of the partition board (1) is movably provided with two clamping sleeves (4) which are buckled with each other, the whole body enclosed by the two clamping sleeves (4) is sleeved outside the pile foundation reinforcement cage, the partition board (1) is provided with a circle of limiting columns (5) for preventing the two clamping sleeves (4) from horizontally moving, the periphery of the whole body enclosed by the two clamping sleeves (4) is provided with a circle of mounting holes (4.1), an isolation cylinder (6) is arranged in the mounting holes (4.1), and the front end of the isolation cylinder (6) is sealed, and extends inwardly to a position adjacent to the central axis of the partition (1).
2. The combination unit for a bored pile foundation demolition pile head according to claim 1, wherein: the periphery of feed opening (1.1) is gone up and is had the closed angle of the outside extension of round, pile foundation main reinforcement and closed angle one-to-one, and the card is established in the closed angle, and the bottom butt of sleeve pipe (3) is in the closed angle department that corresponds.
3. The combination unit for a bored pile foundation demolition pile head according to claim 2, wherein: the isolation cylinder (6) is horizontally arranged and is provided with a conical tip, a flange (6.1) extending outwards 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 (6).
4. The combination unit for a bored pile foundation demolition pile head according to claim 3, wherein: feed opening (1.1) are located the central point of baffle (1) and put, keep apart a section of thick bamboo (6) and are located between two adjacent pile foundation owner muscle, and the axis of pointed end directional baffle (1).
5. The combination unit for a bored pile foundation demolition pile head according to claim 1, wherein: the baffle plate (1) is reinforced on the stop block (2) through bolts.
6. The combination unit for a bored pile foundation demolition pile head according to claim 1, wherein: the two clamping sleeves (4) are semi-annular, and the end parts of the two clamping sleeves (4) are respectively provided with a groove and a convex block which are matched with each other and are fixedly connected through a bolt (8).
7. The combination unit for a bored pile foundation demolition pile head according to claim 1, wherein: the periphery of the partition board (1) is provided with hanging lugs (1.2) which are arranged oppositely, and hanging rings (9) are arranged in the hanging lugs (1.2) in a penetrating mode.
8. The combination unit for a bored pile foundation demolition pile head according to claim 1, wherein: the position that corresponds spacing post (5) on the periphery of baffle (1) all is provided with snap ring (1.3), and spacing post (5) are pegged graft in snap ring (1.3), and the head card is established in snap ring (1.3) upper end.
9. A construction method for breaking pile heads of a bored pile foundation is characterized by comprising the following steps: the method for constructing the pile head for foundation drilling and pile head breaking of the bored pile according to any one of claims 1 to 7, comprising the steps of:
s1: drilling pile construction, and putting down a reinforcement cage; according to the design requirements of hole piles, drilling of the hole piles is reasonably selected by a drilling machine, excavation and hole cleaning of the hole piles are completed, a baffle (2) is fixed on a pile foundation main rib of a pile foundation reinforcement cage, the position where a pile head needs to be broken after the hole piles are constructed is accurately determined, the upper end of the baffle (2) is ensured to be flush with the designed elevation of a pile top, the pile foundation reinforcement cage is transported to the position where the hole piles are completed, and the pile foundation reinforcement cage is placed and primarily fixed;
s2: measuring and rechecking, and installing a partition plate (1); rechecking the position and height of the lowered pile foundation reinforcement cage, after the rechecking is finished, accurately rechecking the pile head position after the hole pile is formed, lowering the partition plate (1) after the error meets the standard requirement, and connecting and locking the partition plate with the baffle plate (2) through bolts;
s3: installing a jacket (4) and an isolation cylinder (6); the two jackets (4) are locked and closed through bolts, the whole enclosed space of the two jackets (4) is lowered into the horizontal limiting space enclosed by the limiting column (5), and the isolating cylinder (6) is inserted into the mounting hole (4.1) on the jacket (4);
s4: mounting a bushing (3); a vertical sleeve (3) is arranged on the pile foundation main reinforcement, and the lower end of the sleeve (3) is abutted against the partition plate (1);
s5: pouring concrete; putting down a conduit required by hole pile pouring through a feed opening (1.1) of the partition plate (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 plate (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 a jacket (4) wrapped outside the pile foundation, removing the isolation cylinder (6) and then removing the jacket (4);
s7: expanding and separating the part of the pile to be broken; separating the pile head to be separated from the pile foundation by using a hydraulic expander in the hole with the isolation cylinder (6) pulled out;
s8: adjusting away the separated pile head; after the pile head is separated from the pile foundation, the partition plate (1) is separated from the fixing piece related to the baffle plate (2), the partition plate (1) is loosened again, and the broken pile head is hoisted out by utilizing a crane to hoist the pull ring.
10. The pile head demolishing construction method of the bored pile foundation according to claim 9, characterized in that: and the partition plate (1), the sleeve (3), the jacket (4) and the isolation cylinder (6) are coated with isolation liquid or lubricating oil before concrete is poured.
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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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| CN202111414129.3A CN114086555B (en) | 2021-11-25 | 2021-11-25 | Construction method for breaking pile head of bored pile foundation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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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| 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 |
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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