CN107268627B - One kind being suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt - Google Patents
One kind being suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt Download PDFInfo
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- CN107268627B CN107268627B CN201710575503.5A CN201710575503A CN107268627B CN 107268627 B CN107268627 B CN 107268627B CN 201710575503 A CN201710575503 A CN 201710575503A CN 107268627 B CN107268627 B CN 107268627B
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- pile crown
- pile
- absolute altitude
- inner concrete
- control line
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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
Abstract
The invention discloses one kind to be suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, comprising the following steps: is positioned by the stake heart of the center of pile crown；Rock core drill platform is set up above pile crown, and rock core drill is installed on rock core drill platform；Inner concrete face absolute altitude control line is marked in pile crown outer ring, inner concrete face absolute altitude control line is located above design of pile top absolute altitude；The inner concrete in pile crown is drilled through along straight down to be unbearable with the stake heart with rock core drill, is drilled into the specified inner concrete face absolute altitude control line of pile crown；The earthwork evacuation in region is abolished to pile crown as region is abolished in the region surrounded using the inner concrete absolute altitude control line above section of pile crown and pile crown inner concentric circular column；Laterally abolish along inner concrete face absolute altitude control pair pile crown outer concrete with pneumatic pick or electric pick.Labor intensity of workers is reduced, it is more quick manually to abolish pile crown part, reduces dust atmosphere, can preferably control and abolish crack development, guarantee pile quality.
Description
Technical field
The present invention relates to technical field of building construction, and in particular to one kind is suitable for the large-scale cast-in-situ bored pile pile crown side of abolishing
Method.
Background technique
In traditional pile foundation pile crown restructuring bankrupt, mostly using pneumatic pick in the 10~15cm of design of pile top absolute altitude that need to be abolished
Locate symmetrical perforating, after removing cover concrete, then laterally fill in crooked chisel in eye mouth, the symmetrical crooked chisel that hammers makes pile crown and pile body
It is separated.For this method when the large-scale pile foundation pile crown that diameter is more than 1.8m is abolished, labor intensity of workers is big, often removes stake
Crooked chisel, which can not once be hammered, after body cover concrete separates pile body with pile crown, repeatedly need to carry out pile crown concrete using pneumatic pick
Removing, the multiple bending that will cause reinforcing bar certainly will be caused to damage to reinforcing bar, at the same cause worker for a long time in dust fly
In the environment raised, and since Pile Diameter is excessive, crooked chisel hammering after caused by cranny development it is uncontrolled, the pile quality after abolishing
It is uncontrolled.
Summary of the invention
The technical problem to be solved by the present invention is in view of the foregoing defects the prior art has, provide one kind and be suitable for
Large-scale cast-in-situ bored pile pile crown restructuring bankrupt, reduces labor intensity of workers, and it is more quick manually to abolish pile crown part, reduces
The working time of dust atmosphere can preferably control the crack development abolished and be, ensure that pile quality.
Used technical solution is the present invention to solve above-mentioned technical problem:
One kind being suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, comprising the following steps:
1) it is positioned by the stake heart of the center of pile crown；
2) rock core drill platform is set up above pile crown, and rock core drill is installed on rock core drill platform；
3) inner concrete face absolute altitude control line is marked in pile crown outer ring, inner concrete face absolute altitude control line is located at pile crown
Design stake top absolute altitude above；
4) it is unbearable along vertically downward direction with the stake heart with rock core drill, drills through the inner concrete in pile crown, be drilled into stake
The inner concrete face absolute altitude control line of head；
5) made with the region that the inner concrete absolute altitude control line above section of pile crown and pile crown inner concentric circular column surround
To abolish region, earthwork evacuation in region is abolished to pile crown；
6) laterally abolish along inner concrete face absolute altitude control pair pile crown outer concrete with pneumatic pick or electric pick.
According to above-mentioned technical proposal, in the step 3), inner concrete absolute altitude control line is higher than design stake top absolute altitude
10cm~15cm out.
It is further comprising the steps of between the step 4) and step 5) according to above-mentioned technical proposal: will be in pile crown
Stake core hole is sealed up with waterproof cloth.
According to above-mentioned technical proposal, before with the stake core hole in waterproof cloth sealing pile crown, manually with small machine pair
Carried out in pile crown finishing and it is levelling.
According to above-mentioned technical proposal, in the step 5), the race diameter of pile crown is D, and pile crown inner concentric circular column is straight
Diameter is 0.65D~0.75D.
It is further comprising the steps of after the step 6) according to above-mentioned technical proposal: the top interface of pile crown is carried out
Finishing.
The invention has the following advantages:
Pile crown is carried out after the taking-up stake core of the present invention using rock core drill to abolish, and reduces labor intensity of workers, it is artificial broken
Except pile crown part is more quick, reduce the working time of dust atmosphere, and because taking out stake core after, the stake section at position need to be abolished
Become smaller, can preferably control the crack development abolished and be, ensure that pile quality.
Detailed description of the invention
Fig. 1 is in the embodiment of the present invention to the elevation of pile crown drilling；
Fig. 2 is in the embodiment of the present invention to the main view of pile crown drilling；
Fig. 3 is the main view abolished in the embodiment of the present invention to pile crown；
In figure, 1- pile crown, 2- boring direction, 3- abolishes direction, 4- reinforcing bar, and 5- abolishes region.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Shown in referring to Fig.1~Fig. 3, the large-scale cast-in-situ bored pile pile crown that is suitable in one embodiment provided by the invention is broken
Except method, comprising the following steps:
1) it is positioned by the stake heart of the center of pile crown 1；
2) rock core drill platform is set up above pile crown 1, and rock core drill is installed on rock core drill platform；
3) inner concrete face absolute altitude control line is marked in 1 outer ring of pile crown, inner concrete face absolute altitude control line is located at stake
Above first 1 design stake top absolute altitude；
4) it is unbearable along vertically downward direction with the stake heart with rock core drill, drills through the inner concrete in pile crown 1, be drilled into stake
First 1 inner concrete face absolute altitude control line；
5) region surrounded with the inner concrete absolute altitude control line above section of pile crown 1 and 1 inner concentric circular column of pile crown
As region 5 is abolished, the earthwork evacuation in region 5 is abolished to pile crown 1；
6) laterally abolish along 1 outer concrete of inner concrete face absolute altitude control pair pile crown with pneumatic pick or electric pick.
Further, in the step 1), the positioning method of the stake heart is to draw the positioning method of cross hairs.
Further, in the step 3), inner concrete absolute altitude control line than design stake top absolute altitude be higher by 10cm~
15cm。
Further, the outer barrel diameter of rock core drill is less than the outer diameter of a circle of pile crown 1, the outer cylinder and pile crown of rock core drill when drilling through
1 outer circle is concentric circles.
Further, further comprising the steps of between the step 4) and step 5): by the stake core hole in pile crown 1
Mouth is sealed up with waterproof cloth；Prevent water and soil from entering.
Further, before with the stake core hole in waterproof cloth sealing pile crown 1, manually pile crown 1 is bored with small machine
Carried out in hole finishing and it is levelling.
Further, in the step 5), the race diameter of pile crown 1 is D, and 1 inner concentric circular column diameter of pile crown is
0.65D~0.75D；The concentric circular diameter of rock core drill, which determines to have met, does not damage reinforcing bar 4 in location of the coring procedure and pile measurement facility is
Standard, generally 0.7D (D is stake diameter), the model specification of rock core drill, coring diameter, number and range can be rationally determined according to D value
To reach the optimization of technical solution, coring construction can pass through after concrete strength of pile is met the requirements according to the actual situation
Crossing after the units such as management are agreed to can carry out.
Further, further comprising the steps of after the step 6): the top interface of pile crown 1 is modified.
In one embodiment of the present of invention, the working principle of the invention:
Scheme used by the invention to solve above-mentioned technical problem is to abolish construction using a kind of novel pile crown 1
Method, steps are as follows: (1) 1 centralized positioning of pile crown (2) rock core drill putting up platform (3) is mechanical takes out stake core position concrete (4) stake
First 1 part earthwork evacuation (5) abolishes the finishing of 1 interface of outer concrete (6) pile crown.
The positioning of step (1) the stake heart determines that cross hairs stake wants solid and reliable using in such a way that cross hairs is drawn in drilling completion, and
Pay attention to protection, checked before concreting, total station positioning method should not be used, construction or instrument is avoided to cause error.
Step (2) rock core drill platform bearer power, stability will meet construction requirement, avoid the occurrence of uneven subsidence, and edge
The stake heart releases concentric circles, which is the sideline for needing coring.Rock core drill is in place.
Step (3) machinery answers strict control absolute altitude when taking out inner concrete, the mark in inner concrete face after general taking-up
Height should be higher by 10~15cm than design stake top absolute altitude, and small machine manual amendment, levelling is used before carrying out next process.
It is sealed up at stake core hole with waterproof cloth before step (4) earthwork evacuation, prevents the entrance of water and soil.
Step (5) outer concrete abolish before design 10~15cm of stake top carry out a circle absolute altitude control line, using pneumatic pick
Or electric pick laterally abolish.
In conclusion, by using mechanically actuated, being reduced by this method using manually being abolished after rock core drill elder generation coring
The manual working time reduces the labor intensity of worker, reduces worker in the working time of dust atmosphere and noisy environment,
The damage reduced to body is connect, during manually abolishing, since 1 section of pile crown abolished becomes smaller, can be protected in removing
It after layer concrete, laterally abolishes from top to bottom, is conducive to the protection of pile quality control and reinforcing bar 4；It saves and abolishes large-scale stake
It first 1 time, improves work efficiency；This method is smaller to pile body and 4 damaged condition of reinforcing bar；Reduce the work for abolishing pile crown 1
People is exposed to dust and wipes the time in noisy environment, reduces the damage to body indirectly.
Above is only presently preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this,
Therefore according to equivalence changes made by scope of the present invention patent, still belong to protection scope of the present invention.
Claims (6)
1. one kind is suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, which comprises the following steps:
1) it is positioned by the stake heart of the center of pile crown；
2) rock core drill platform is set up above pile crown, and rock core drill is installed on rock core drill platform；
3) inner concrete face absolute altitude control line is marked in pile crown outer ring, inner concrete face absolute altitude control line is located at setting for pile crown
It counts above stake top absolute altitude；
4) it is unbearable along vertically downward direction with the stake heart with rock core drill, drills through the inner concrete in pile crown, be drilled into pile crown
Inner concrete face absolute altitude control line；
5) using the region that the inner concrete absolute altitude control line above section of pile crown and pile crown inner concentric circular column surround as broken
Except region, earthwork evacuation in region is abolished to pile crown；
6) laterally abolish along inner concrete face absolute altitude control pair pile crown outer concrete with pneumatic pick or electric pick.
2. according to claim 1 be suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, which is characterized in that the step
It is rapid 3) in, inner concrete absolute altitude control line than design stake top absolute altitude be higher by 10cm~15cm.
3. according to claim 1 be suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, which is characterized in that described
It is further comprising the steps of between step 4) and step 5): by pile crown drill in stake core hole sealed up with waterproof cloth.
4. according to claim 3 be suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, which is characterized in that with waterproof
Cloth seal pile crown in stake core hole before, manually with small machine to carried out in pile crown finishing and it is levelling.
5. according to claim 1 be suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, which is characterized in that the step
It is rapid 5) in, the race diameter of pile crown is D, and pile crown inner concentric circular column diameter is 0.65D~0.75D.
6. according to claim 1 be suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt, which is characterized in that the step
It is rapid 6) further comprising the steps of later: the top interface of pile crown is modified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710575503.5A CN107268627B (en) | 2017-07-14 | 2017-07-14 | One kind being suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710575503.5A CN107268627B (en) | 2017-07-14 | 2017-07-14 | One kind being suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt |
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| Publication Number | Publication Date |
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| CN107268627A CN107268627A (en) | 2017-10-20 |
| CN107268627B true CN107268627B (en) | 2019-08-23 |
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| CN201710575503.5A Active CN107268627B (en) | 2017-07-14 | 2017-07-14 | One kind being suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108978659B (en) * | 2018-07-10 | 2021-06-01 | 广东省建筑工程机械施工有限公司 | Construction method for concrete precast tubular pile cutting head |
| CN112064641A (en) * | 2020-09-08 | 2020-12-11 | 成都大家液压机械有限公司 | Method for breaking pile head of cast-in-place pile |
| CN114482026B (en) * | 2022-02-18 | 2023-09-22 | 广西路桥工程集团有限公司 | Construction method for connecting piles in water |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0796948B1 (en) * | 1994-12-05 | 2002-09-25 | Shogen Okawa | Pile head treating tool for cast-in-place and pile head treating method |
| JPH10195873A (en) * | 1997-01-07 | 1998-07-28 | Toyo Techno Kk | Existing structure recovery method and apparatus in all casing construction method |
| CN101333811B (en) * | 2008-08-05 | 2011-05-18 | 中国建筑材料科学研究总院 | Concrete filling pile head static cutting and crushing method |
| CN103821146B (en) * | 2014-02-12 | 2015-08-19 | 杭州建工集团有限责任公司 | A kind of explosion cutting piles technique of PC pile tube |
| CN104762968A (en) * | 2015-04-10 | 2015-07-08 | 中铁建工集团有限公司 | Multifunctional super-short pile cutting device for precast pipe pile |
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