CN105735317A - Construction technology for removing pile heads of cast-in-place piles - Google Patents
Construction technology for removing pile heads of cast-in-place piles Download PDFInfo
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- CN105735317A CN105735317A CN201610132805.0A CN201610132805A CN105735317A CN 105735317 A CN105735317 A CN 105735317A CN 201610132805 A CN201610132805 A CN 201610132805A CN 105735317 A CN105735317 A CN 105735317A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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- Mining & Mineral Resources (AREA)
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Abstract
The invention discloses a construction technology for removing pile heads of cast-in-place piles. The construction technology comprises the steps of 1, installing pile head steel bar protective jackets; 2, separating pile head concrete; 3, hoisting the pile head concrete out wholly and removing the pile heads. The construction technology is reasonable in design, fast, effective and low in cost, reduces damage to main steel bars in the process of removing the pile heads and causes little damage to the parts, under the elevation of pile tops, of pile bodies, the removal interfaces are smooth, and therefore the construction quality can be guaranteed. The construction technology is suitable for being popularized.
Description
Technical field
The invention belongs to architectural construction technology field, specifically, relate to a kind of bored concrete pile and abolish pile crown construction technology.
Background technology
Bored concrete pile has the advantages such as bearing capacity height, construction technology is ripe, cost is low, is therefore widely used in the basis of industry and civil buildings, bridge.In filling pile construction, owing to a part of concrete strength of topmost is poor, in order to ensure monolithic concrete intensity, and avoid a top mark height not in place, often select perfusion absolute altitude to exceed a top mark height, then abolish unnecessary part.
The method that current broken pile head is conventional is manually to be aided with small machine cut or cut concrete cover in the above position of designed elevation, makes reinforcing bar exposed and peels off concrete.Existing broken pile head method is primarily present following weak point: 1), pile crown is abolished wastes time and energy, and manually, machinery expenses high；2), pile crown main muscle will certainly be affected when abolishing, construction quality is difficult to ensure that.
Summary of the invention
The technical problem to be solved in the present invention is to overcome drawbacks described above, it is provided that a kind of bored concrete pile abolishes pile crown construction technology, reasonable in design, quickly effectively, low cost, not only reduce the infringement to main muscle when abolishing pile crown, and it is smooth to abolish interface, thus ensureing construction quality, be suitable to promote.
For solving the problems referred to above, the technical solution adopted in the present invention is:
Bored concrete pile abolishes pile crown construction technology, it is characterised in that: step is as follows: 1), pile crown steel reinforcement protective sleeve install；2), pile crown concrete is separated；3), pile crown concrete entirety hang out, abolish pile crown.
As the technical scheme of a kind of optimization, step 1) in,
Protection set to carry out installation before transferring in stake holes after pile foundation steel bar cage machines；Protection set internal diameter is more than bar diameter 2-3cm；The two ends closure of protection set, its main purpose is to prevent concrete from contacting with pile crown reinforcing bar, and forms certain space；
Pile foundation reinforcement installation protects length, is generally the part reinforcing bar that pile foundation reinforcing bar stretches in binder, cushion cap or pier stud.
As the technical scheme of a kind of optimization, step 2) in,
Before separating pile crown concrete, should accurately being measured by stake top mark height, on design stake top mark height, 10～15cm pile foundation carries out mark line in one week, for pile crown concrete defiber；Exceeding the part of design of pile top absolute altitude, before construction subsequent processing, artificial pneumatic pick carries out cutting, repairing；
Carrying out the wind big gun symmetry perforating of mark line position；
When separating pile crown concrete, adopt rock-splitter.
As the technical scheme of a kind of optimization, step 3) in,
After pile crown concrete separates, hook pre-buried suspension ring with jack lift or hook and squeeze into the concrete bar dowel of pile crown, slow vertical lifting, pile crown concrete entirety is hung out, reaches to abolish the purpose of pile crown.
The present invention is cotton with foam, plastic flexible pipe or pvc pipe, the materials such as bamboo are as protection set, when pile foundation steel bar cage makes, above for design of pile top absolute altitude pile crown reinforcing bar is put protection set, make concrete cannot contact with reinforcing bar, reinforcing bar can not be produced bond stress and cohesion, utilize concrete tensile strength, the principle that shearing strength is less, at the above 20cm place of Pile Foundations Design absolute altitude, with air inflating machine for dismantling tyre in pile body boring uniformly in one week, pile crown is made to disconnect in bore position level with rock-splitter, then crane hangs the suspension ring being embedded in pile crown concrete, pile crown concrete entirety is hung out, reach to abolish the purpose of pile crown.
Owing to have employed technique scheme, compared with prior art, the present invention is reasonable in design, quickly effectively, low cost, not only reduce the infringement to main muscle when abolishing pile crown, and it is smooth to abolish interface, thus ensureing construction quality, is suitable to promote.
Detailed description of the invention
Embodiment:
Bored concrete pile abolishes pile crown construction technology, and step is as follows:
1), pile crown steel reinforcement protective sleeve is installed.
Protection set to carry out installation before transferring in stake holes after pile foundation steel bar cage machines；Protection set internal diameter is more than bar diameter 2-3cm；The two ends closure of protection set, its main purpose is to prevent concrete from contacting with pile crown reinforcing bar, and forms certain space.
Pile foundation reinforcement installation protects length, is generally the part reinforcing bar that pile foundation reinforcing bar stretches in binder, cushion cap or pier stud.
Protection set is, plastic water pipe cotton by foam or the material protection pile crown reinforcing bar such as pvc pipe, bamboo, makes pile crown reinforcing bar and concrete isolation.
2), pile crown concrete is separated.
Before separating pile crown concrete, should accurately being measured by stake top mark height, on design stake top mark height, 10～15cm pile foundation carries out mark line in one week, for pile crown concrete defiber.Exceeding the part of design of pile top absolute altitude, before construction subsequent processing, artificial pneumatic pick carries out cutting, repairing.
Carrying out the wind big gun symmetry perforating of mark line position.
When separating pile crown concrete, adopt rock-splitter.
3), pile crown concrete entirety hang out, abolish pile crown.
After pile crown concrete separates, hook pre-buried suspension ring with jack lift or hook and squeeze into the concrete bar dowel of pile crown, slow vertical lifting, pile crown concrete entirety is hung out, reaches to abolish the purpose of pile crown.
The present invention is cotton with foam, plastic flexible pipe or pvc pipe, the materials such as bamboo are as protection set, when pile foundation steel bar cage makes, above for design of pile top absolute altitude pile crown reinforcing bar is put protection set, make concrete cannot contact with reinforcing bar, reinforcing bar can not be produced bond stress and cohesion, utilize concrete tensile strength, the principle that shearing strength is less, at the above 20cm place of Pile Foundations Design absolute altitude, with air inflating machine for dismantling tyre in pile body boring uniformly in one week, pile crown is made to disconnect in bore position level with rock-splitter, then crane hangs the suspension ring being embedded in pile crown concrete, pile crown concrete entirety is hung out, reach to abolish the purpose of pile crown.
The present invention is reasonable in design, quickly effectively, low cost, not only reduce the infringement to main muscle when abolishing pile crown, and it is smooth to abolish interface, thus ensureing construction quality, is suitable to promote.
The present invention is not limited to above-mentioned preferred implementation, and anyone should learn the structure change made under the enlightenment of the present invention, every have with the present invention same or like like technical scheme, belong to protection scope of the present invention.
Claims (4)
1. bored concrete pile abolishes pile crown construction technology, it is characterised in that: step is as follows:
1), pile crown steel reinforcement protective sleeve is installed；
2), pile crown concrete is separated；
3), pile crown concrete entirety hang out, abolish pile crown.
2. bored concrete pile according to claim 1 abolishes pile crown construction technology, it is characterised in that: step 1) in,
Protection set to carry out installation before transferring in stake holes after pile foundation steel bar cage machines；Protection set internal diameter is more than bar diameter 2-3cm；The two ends closure of protection set, its main purpose is to prevent concrete from contacting with pile crown reinforcing bar, and forms certain space；
Pile foundation reinforcement installation protects length, is generally the part reinforcing bar that pile foundation reinforcing bar stretches in binder, cushion cap or pier stud.
3. bored concrete pile according to claim 2 abolishes pile crown construction technology, it is characterised in that: step 2) in,
Before separating pile crown concrete, should accurately being measured by stake top mark height, on design stake top mark height, 10～15cm pile foundation carries out mark line in one week, for pile crown concrete defiber；Exceeding the part of design of pile top absolute altitude, before construction subsequent processing, artificial pneumatic pick carries out cutting, repairing；
Carrying out the wind big gun symmetry perforating of mark line position；
When separating pile crown concrete, adopt rock-splitter.
4. bored concrete pile according to claim 3 abolishes pile crown construction technology, it is characterised in that: step 3) in,
After pile crown concrete separates, hook pre-buried suspension ring with jack lift or hook and squeeze into the concrete bar dowel of pile crown, slow vertical lifting, pile crown concrete entirety is hung out, reaches to abolish the purpose of pile crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610132805.0A CN105735317A (en) | 2016-03-09 | 2016-03-09 | Construction technology for removing pile heads of cast-in-place piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610132805.0A CN105735317A (en) | 2016-03-09 | 2016-03-09 | Construction technology for removing pile heads of cast-in-place piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105735317A true CN105735317A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610132805.0A Pending CN105735317A (en) | 2016-03-09 | 2016-03-09 | Construction technology for removing pile heads of cast-in-place piles |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106638600A (en) * | 2016-11-03 | 2017-05-10 | 中冶交通建设集团有限公司 | Construction method for breaking bored pile head |
| CN107130601A (en) * | 2017-05-31 | 2017-09-05 | 中建二局第二建筑工程有限公司 | It is a kind of to improve device and restructuring bankrupt that pile crown abolishes efficiency |
| 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 |
| CN108457272A (en) * | 2017-02-22 | 2018-08-28 | 中国二十冶集团有限公司 | Filling pile head restructuring bankrupt |
| CN108547304A (en) * | 2018-05-17 | 2018-09-18 | 山东电力建设第三工程有限公司 | The invalid pile crown of deposited reinforced concrete pile integrally abolishes construction technology |
| CN114837182A (en) * | 2022-04-14 | 2022-08-02 | 中建八局西北建设有限公司 | Construction method for breaking and removing dummy pile head without circular cutting |
| CN114875912A (en) * | 2022-05-29 | 2022-08-09 | 中国五冶集团有限公司 | Reinforcing steel bar protection method for hydraulic pile breaking head |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040260A (en) * | 1975-03-26 | 1977-08-09 | Pynford Limited | Pile with downwardly extending elongated elements |
| CN203654269U (en) * | 2013-11-04 | 2014-06-18 | 中铁十八局集团第三工程有限公司 | Drilling-poured pile head capable of being chipped integrally |
| CN203924040U (en) * | 2014-05-22 | 2014-11-05 | 上海绿地建设(集团)有限公司 | A kind of filling pile head is processed structure |
| CN204343285U (en) * | 2014-11-13 | 2015-05-20 | 中交隧道工程局有限公司 | A kind of pile foundation pile crown entirety abolishes structure |
-
2016
- 2016-03-09 CN CN201610132805.0A patent/CN105735317A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040260A (en) * | 1975-03-26 | 1977-08-09 | Pynford Limited | Pile with downwardly extending elongated elements |
| CN203654269U (en) * | 2013-11-04 | 2014-06-18 | 中铁十八局集团第三工程有限公司 | Drilling-poured pile head capable of being chipped integrally |
| CN203924040U (en) * | 2014-05-22 | 2014-11-05 | 上海绿地建设(集团)有限公司 | A kind of filling pile head is processed structure |
| CN204343285U (en) * | 2014-11-13 | 2015-05-20 | 中交隧道工程局有限公司 | A kind of pile foundation pile crown entirety abolishes structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638600A (en) * | 2016-11-03 | 2017-05-10 | 中冶交通建设集团有限公司 | Construction method for breaking bored pile head |
| 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 |
| CN108457272A (en) * | 2017-02-22 | 2018-08-28 | 中国二十冶集团有限公司 | Filling pile head restructuring bankrupt |
| CN107130601A (en) * | 2017-05-31 | 2017-09-05 | 中建二局第二建筑工程有限公司 | It is a kind of to improve device and restructuring bankrupt that pile crown abolishes efficiency |
| 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 |
| CN108547304A (en) * | 2018-05-17 | 2018-09-18 | 山东电力建设第三工程有限公司 | The invalid pile crown of deposited reinforced concrete pile integrally abolishes construction technology |
| CN114837182A (en) * | 2022-04-14 | 2022-08-02 | 中建八局西北建设有限公司 | Construction method for breaking and removing dummy pile head without circular cutting |
| CN114875912A (en) * | 2022-05-29 | 2022-08-09 | 中国五冶集团有限公司 | Reinforcing steel bar protection method for hydraulic pile breaking head |
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Application publication date: 20160706 |
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