CN111424663A - Environment-friendly and efficient pile head breaking method - Google Patents
Environment-friendly and efficient pile head breaking method Download PDFInfo
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- CN111424663A CN111424663A CN202010222750.9A CN202010222750A CN111424663A CN 111424663 A CN111424663 A CN 111424663A CN 202010222750 A CN202010222750 A CN 202010222750A CN 111424663 A CN111424663 A CN 111424663A
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- drilling hole
- pile head
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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
Abstract
The invention belongs to optimization of a concrete pile head breaking construction process, and relates to an environment-friendly and efficient pile head breaking method, which comprises the following steps: 1) large-area drilling construction is carried out in daytime, drilling holes are arranged on the surface of a pile head, drilling holes and coring are carried out on corresponding hole positions according to an actual measurement elevation to a pile head breaking design elevation by using a pneumatic drill or a hydraulic drill device, 2) an expanding agent is filled in the drilling holes at night, the plugging is tight, and after 5-12 hours, concrete is cracked and divided into a plurality of blocks within the range of the broken pile head by using the natural expansion of the expanding agent; compared with the traditional manual pile head breaking process, the construction process reduces the generation of dust and noise, concrete does not need to be broken manually, the labor intensity of workers is reduced, meanwhile, the non-construction time at night is reasonably utilized, and the working efficiency is improved.
Description
Technical Field
The invention belongs to optimization of a concrete pile head breaking construction process, and relates to an environment-friendly and efficient pile head breaking method.
Background
According to the national standard requirement, after the construction of the cast-in-place pile is completed and the design strength is reached, the floating slurry at the upper part of the pile top needs to be chiseled off, and the concrete with the strength grade not meeting the standard is removed, wherein the construction process is called pile head breaking; at present, the common method for breaking the pile head in China is a manual pneumatic pick breaking method. In the process of breaking pile head concrete, because part of the main reinforcement of the reinforcement cage extends into the pile head concrete, the construction difficulty is increased, in order to separate the reinforcement from the concrete to be chiseled, the main reinforcement of the reinforcement cage is separated from the concrete by adopting a partition plate method or a reinforcement sleeve method before the concrete is poured by some new processes at present, and because the part of the concrete to be chiseled is not completely separated from the main reinforcement of the reinforcement cage due to the limitation of sealing measures in the construction process.
The traditional manual air pick can generate larger noise in the process of breaking the pile head concrete, the generated dust has certain harm to the health of constructors, the requirement on the labor intensity of the constructors is high, and the construction efficiency is lower; or measures are taken to effectively divide the steel bars and the concrete and then chiseling off the pile head, larger noise and dust can be generated, the construction method has certain disturbance to the concrete, and the whole cut concrete depends on heavy hoisting machinery.
Disclosure of Invention
Aiming at solving the problems in the prior art and aiming at the characteristics of high labor cost input, low labor efficiency, more construction dust and high noise in the pile head breaking construction process, the invention provides the environment-friendly and high-efficiency pile head breaking method.
In order to achieve the purpose, the invention adopts the following technical scheme: an environment-friendly and efficient pile head breaking method comprises the following steps:
1) large-area drilling construction is carried out in daytime, drilling holes are distributed on the surface of the pile head, and drilling holes in corresponding hole positions according to the actual measurement elevation by using a pneumatic drill or a water drill device until the pile head is broken and drilled to reach the designed elevation;
2) and filling an expanding agent in the drill hole at night, tightly sealing, and after waiting for 5-12 hours, cracking the concrete into a plurality of blocks within the range of breaking the pile head by utilizing the natural expansion of the expanding agent.
The diameter of the drill hole is selected according to the diameter of the pile head and the strength of concrete, and the range is 25mm-35 mm.
The drilling hole comprises a main drilling hole and a side drilling hole, the opening of the main drilling hole is formed in the upper end face of the concrete pile body, the opening of the side drilling hole is formed in the side face of the concrete pile body, and the bottom end face of the main drilling hole is flush with the bottom end face of the side drilling hole.
The main drilling hole comprises a first main drilling hole, a second main drilling hole, a third main drilling hole, a fourth main drilling hole and a fifth main drilling hole, an opening of the first main drilling hole is formed in the center of the upper end face of the concrete pile body, the second main drilling hole, the third main drilling hole, the fourth main drilling hole and the fifth main drilling hole are arranged around the center of the first main drilling hole, the second main drilling hole, the third main drilling hole, the fourth main drilling hole and the fifth main drilling hole are distributed in a circular ring shape, the first main drilling hole, the fourth main drilling hole and the second main drilling hole are located on a straight line a, the first main drilling hole, the third main drilling hole and the fifth main drilling hole are located on a.
The side drilling holes comprise a first side drilling hole, a second side drilling hole and a third side drilling hole, the first side drilling hole, the second side drilling hole and the third side drilling hole are uniformly distributed on the side wall of the concrete pile body, the first side drilling hole, the second side drilling hole and the third side drilling hole are obliquely arranged in the concrete pile body, and the included angles α between the first side drilling hole, the second side drilling hole and the third side drilling hole and the horizontal line are 45-55 degrees.
The included angle α is 50 degrees.
Compared with the prior art, the invention has the beneficial effects that: the invention has the characteristics of simple process, strong controllability, high efficiency, environmental protection, reduction of disturbance to concrete and suppression of generation of construction dust; compared with the traditional manual pile head breaking process, the construction process reduces the generation of dust and noise, concrete does not need to be broken manually, the labor intensity of workers is reduced, meanwhile, the non-construction time at night is reasonably utilized, and the working efficiency is improved; compared with the existing hydraulic pile head breaking machine in the industry, the hydraulic pile head breaking machine does not need the matching of large-scale hoisting equipment, reduces the construction cost, and has strong construction precision and controllability; in the prior art, a partition plate method or a steel bar sleeve method is adopted to separate the main reinforcement of the steel bar cage from the concrete before the concrete is poured, but the concrete still can be bonded with the steel bar through a damaged hole or a gap with poor sealing effect in the actual construction process.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a schematic view of the drilling construction of the present invention.
Fig. 4 is a schematic diagram of the concrete pile body detection of the invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are provided only for illustrating the present invention and are not intended to limit the scope of the present invention.
Referring to fig. 1-4, an environment-friendly and efficient pile head removing method includes the following steps:
1) large-area drilling construction is carried out in daytime, the surface of a concrete pile body 2 is provided with a drill hole 1, a pneumatic drill or a hydraulic drill is adopted to drill and core at a corresponding hole position according to an actual measurement elevation to a pile head breaking design elevation, and the diameter of the preferable drill hole 1 is selected according to the diameter of the pile head and the strength of concrete and ranges from 25mm to 35 mm;
2) and filling the expansion agent in the drill hole 1 at the evening, tightly sealing, and after waiting for 5-12 hours, cracking the concrete into a plurality of blocks within the range of breaking the concrete pile body 2 by utilizing the natural expansion of the expansion agent. And finally, manually matching with mechanical equipment to remove the cracked concrete so as to achieve the purpose of breaking the concrete of the concrete pile body 2. In order to improve the operation efficiency, large-area drilling construction can be carried out in the daytime, the expansion agent is filled in the drilled holes at the evening, and the aim of crushing pile head concrete by the expansion agent is fulfilled at the non-working time at night.
The drilling 1 includes main drilling 11 and sidetracking hole 12, and 11 openings of main drilling set up in 2 up end of concrete pile body, and the 12 openings of sidetracking hole set up in 2 sides of concrete pile body, and 11 bottom faces of main drilling are parallel and level mutually with 12 bottom faces of sidetracking hole.
The main drilling hole 11 comprises a first main drilling hole 111, a second main drilling hole 112, a third main drilling hole 113, a fourth main drilling hole 114 and a fifth main drilling hole 115, wherein an opening of the first main drilling hole 111 is formed in the center of the upper end face of the concrete pile body 2, the second main drilling hole 112, the third main drilling hole 113, the fourth main drilling hole 114 and the fifth main drilling hole 115 are arranged around the center of the first main drilling hole 111, the second main drilling hole 112, the third main drilling hole 113, the fourth main drilling hole 114 and the fifth main drilling hole 115 are distributed in a circular ring shape, the first main drilling hole 111, the fourth main drilling hole 114 and the second main drilling hole 112 are located on a straight line a, the first main drilling hole 111, the third main drilling hole 113 and the fifth main drilling hole 115 are located on a straight line b, the straight line a and the straight line b are vertically arranged, the distance between the.
The side drilling hole 12 comprises a first side drilling hole 121, a second side drilling hole 122 and a third side drilling hole 123, the first side drilling hole 121, the second side drilling hole 122 and the third side drilling hole 123 are uniformly distributed on the side wall of the concrete pile body 2, the first side drilling hole 121, the second side drilling hole 122 and the third side drilling hole 123 are obliquely arranged in the concrete pile body 2, an included angle α between the first side drilling hole 121, the second side drilling hole 122 and the third side drilling hole 123 and a horizontal line is 45-55 degrees, and the preferred included angle α is 50 degrees.
Depth of the borehole 1: h = pile head surface elevation H1-pile head breaking design elevation H2.
The pile head breaking part under the construction process is excellent in integrity of the pile body and the pile head through low-strain monitoring, and the pile head breaking phenomenon is not found within the range of 5m of the designed elevation, so that the construction process is operable.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (6)
1. An environment-friendly and efficient pile head breaking method is characterized by comprising the following steps: the method comprises the following steps:
1) large-area drilling construction is carried out in daytime, drilling holes are distributed on the surface of the pile head, and drilling holes in corresponding hole positions according to the actual measurement elevation by using a pneumatic drill or a water drill device until the pile head is broken and drilled to reach the designed elevation;
2) and filling an expanding agent in the drill hole at night, tightly sealing, and after waiting for 5-12 hours, cracking the concrete into a plurality of blocks within the range of breaking the pile head by utilizing the natural expansion of the expanding agent.
2. The environmentally friendly and efficient pile head demolition method according to claim, characterized in that: the diameter of the drill hole is selected according to the diameter of the pile head and the strength of concrete, and the range is 25mm-35 mm.
3. The environmentally friendly and efficient pile head demolition method according to claim 1, characterized in that: the drilling hole comprises a main drilling hole and a side drilling hole, the opening of the main drilling hole is formed in the upper end face of the concrete pile body, the opening of the side drilling hole is formed in the side face of the concrete pile body, and the bottom end face of the main drilling hole is flush with the bottom end face of the side drilling hole.
4. The environmentally friendly and efficient pile head demolition method according to claim 3, wherein: the main drilling hole comprises a first main drilling hole, a second main drilling hole, a third main drilling hole, a fourth main drilling hole and a fifth main drilling hole, an opening of the first main drilling hole is formed in the center of the upper end face of the concrete pile body, the second main drilling hole, the third main drilling hole, the fourth main drilling hole and the fifth main drilling hole are arranged around the center of the first main drilling hole, the second main drilling hole, the third main drilling hole, the fourth main drilling hole and the fifth main drilling hole are distributed in a circular ring shape, the first main drilling hole, the fourth main drilling hole and the second main drilling hole are located on a straight line a, the first main drilling hole, the third main drilling hole and the fifth main drilling hole are located on a.
5. The environment-friendly and efficient pile head breaking method according to claim 3, wherein the side drilling holes comprise a first side drilling hole, a second side drilling hole and a third side drilling hole, the first side drilling hole, the second side drilling hole and the third side drilling hole are uniformly distributed on the side wall of the concrete pile body, the first side drilling hole, the second side drilling hole and the third side drilling hole are obliquely arranged in the concrete pile body, and an included angle α formed by the first side drilling hole, the second side drilling hole and the third side drilling hole and a horizontal line is 45-55 degrees.
6. The environment-friendly and efficient pile head breaking method according to claim 5, wherein the included angle α is 50 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010222750.9A CN111424663A (en) | 2020-03-26 | 2020-03-26 | Environment-friendly and efficient pile head breaking method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010222750.9A CN111424663A (en) | 2020-03-26 | 2020-03-26 | Environment-friendly and efficient pile head breaking method |
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| CN111424663A true CN111424663A (en) | 2020-07-17 |
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| CN202010222750.9A Pending CN111424663A (en) | 2020-03-26 | 2020-03-26 | Environment-friendly and efficient pile head breaking method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162334A (en) * | 2022-07-13 | 2022-10-11 | 中国华冶科工集团有限公司 | Method for dismantling pile head of concrete cast-in-place pile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087981A (en) * | 2016-06-08 | 2016-11-09 | 中国十七冶集团有限公司 | A kind of cast-in-situ bored pile pile crown and pile crown restructuring bankrupt thereof |
| CN206110122U (en) * | 2016-10-11 | 2017-04-19 | 中铁三局集团有限公司 | Bridge drilled pile convenient to get rid of pile head |
| CN106958245A (en) * | 2017-04-07 | 2017-07-18 | 中交二公局第工程有限公司 | The quick structure and method for abolishing concrete pile head |
| CN107604920A (en) * | 2017-09-14 | 2018-01-19 | 云南建投第五建设有限公司 | A kind of quick construction method for abolishing filling pile head |
| CN110485421A (en) * | 2019-09-24 | 2019-11-22 | 中国五冶集团有限公司 | A kind of pile crown quickly abolishes construction technology |
-
2020
- 2020-03-26 CN CN202010222750.9A patent/CN111424663A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087981A (en) * | 2016-06-08 | 2016-11-09 | 中国十七冶集团有限公司 | A kind of cast-in-situ bored pile pile crown and pile crown restructuring bankrupt thereof |
| CN206110122U (en) * | 2016-10-11 | 2017-04-19 | 中铁三局集团有限公司 | Bridge drilled pile convenient to get rid of pile head |
| CN106958245A (en) * | 2017-04-07 | 2017-07-18 | 中交二公局第工程有限公司 | The quick structure and method for abolishing concrete pile head |
| CN107604920A (en) * | 2017-09-14 | 2018-01-19 | 云南建投第五建设有限公司 | A kind of quick construction method for abolishing filling pile head |
| CN110485421A (en) * | 2019-09-24 | 2019-11-22 | 中国五冶集团有限公司 | A kind of pile crown quickly abolishes construction technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162334A (en) * | 2022-07-13 | 2022-10-11 | 中国华冶科工集团有限公司 | Method for dismantling pile head of concrete cast-in-place pile |
| CN115162334B (en) * | 2022-07-13 | 2023-12-15 | 中国华冶科工集团有限公司 | Method for dismantling pile head of concrete filling pile |
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Application publication date: 20200717 |