CN104404950B - A kind of reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown - Google Patents
A kind of reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown Download PDFInfo
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- CN104404950B CN104404950B CN201410666445.3A CN201410666445A CN104404950B CN 104404950 B CN104404950 B CN 104404950B CN 201410666445 A CN201410666445 A CN 201410666445A CN 104404950 B CN104404950 B CN 104404950B
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- pile crown
- expansion pipe
- tube
- isolated
- directional expansion
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/223—Details of top sections of foundation piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of reinforcing bar to isolate dustless orientation and autotomy the construction method of pile crown, Specific construction step includes: design the pile crown interface of level on steel reinforcement cage；At at least one directional expansion pipe that the interfacial inclined upward of pile crown is installed；The two ends up and down of described directional expansion pipe with upper plug head and lower end cap sealing, prevent concrete from entering directional expansion pipe respectively；The outside of every vertical reinforcement of steel reinforcement cage more than pile crown interface is set with isolated tube, and isolated tube and vertical reinforcing bar matched in clearance, isolated tube upper and lower side does sealing and processes；Steel reinforcement cage is put into ground well, concrete perfusion, and concrete setting obtains building lot stake after shaping；When excavating pile crown, finding out directional expansion pipe upper end, extract upper plug head, inject swelling agent in directional expansion pipe, pile crown can rupture automatically.This construction method security height, dustless environment protecting, efficient energy-saving, low cost, do not limited by environmental condition, noresidue of rupturing, both artistic and practical.
Description
Technical field
The present invention relates to a kind of building field, a kind of dustless orientation of reinforcing bar isolation applied in fields such as high speed, high ferro, harbour, wind-powered electricity generation pile foundations is autotomyed the construction method of pile crown.
Background technology
The building lot stake of large-scale fortification all uses the mode of steel reinforcement cage 1 concrete perfusion 2, and for proof strength, the height of the building lot stake obtained of first constructing is higher than object height, is removed by the pile crown of building lot stake so that it is expose a part of steel reinforcement cage the most again.
At present, building lot stake is removed the form of construction work of pile crown and is: first being driven air drill or electric drilling device to abolish the concrete beyond steel reinforcement cage by builder with air compressor machine, then punch with air drill, put into voussoir, hammering makes it rupture, and can remove pile crown；Concrete dust is there will be, after builder sucks health, it is impossible to got rid of by metabolism external, health is caused very major injury, affects working environment simultaneously during the method construction；And labor strength is big and efficiency is low, construction cost is high and security is low.
Summary of the invention
It is an object of the invention to provide a kind of security height, dustless environment protecting, efficient energy-saving, the reinforcing bar of low cost are isolated dustless orientation and are autotomyed the construction method of pile crown.
For achieving the above object, the present invention provides following technical scheme:
A kind of reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown, and Specific construction step includes:
(1) on steel reinforcement cage, design the pile crown interface of level；
(2) at least one directional expansion pipe installed at the interfacial inclined upward of pile crown；The two ends up and down of described directional expansion pipe with upper plug head and lower end cap sealing, prevent concrete from entering directional expansion pipe respectively；
(3) outside of every vertical reinforcement of steel reinforcement cage more than pile crown interface is set with isolated tube, and isolated tube and vertical reinforcing bar matched in clearance, isolated tube upper and lower side does sealing and processes；
(4) steel reinforcement cage being put into ground well, concrete perfusion, concrete setting obtains building lot stake after shaping；
(5) when excavating pile crown, finding out directional expansion pipe upper end, extract upper plug head, inject swelling agent in directional expansion pipe, pile crown can rupture automatically.
As the further scheme of the present invention: described directional expansion pipe and the interfacial angle of pile crown are 5-15 °, and steel reinforcement cage is stretched out in directional expansion pipe upper end, and the central shaft of steel reinforcement cage is pointed in lower end.
As the further scheme of the present invention: be also associated with the bracing wire for upper plug head being extracted directional expansion pipe on described upper plug head.
As the further scheme of the present invention: described directional expansion pipe includes the outer expansion tube that is set in together and interior expansion tube, and it is provided with spring between outer expansion tube and interior expansion tube, described lower spring end is connected with outer expansion tube, upper end is connected with interior expansion tube, after extracting upper plug head, outer expansion tube is stretched out in interior expansion tube upper end under the action of the spring.
As the further scheme of the present invention: described isolated tube uses plastic tube or metal tube or foam software.
Compared with prior art, the invention has the beneficial effects as follows: this construction method security height, dustless environment protecting, efficient energy-saving, low cost, do not limited by environmental condition, noresidue of rupturing, both artistic and practical.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of building lot stake.
Fig. 2 is the plan structure schematic diagram of building lot stake.
Fig. 3 is the structural representation of directional expansion pipe.
In figure: expansion tube, 45-upper plug head, 47-bracing wire, 5-isolated tube, 6-vertical reinforcement in 1-steel reinforcement cage, 2-concrete, 3-pile crown interface, 4-directional expansion pipe, 41-lower end cap, 42-outer expansion tube, 43-spring, 44-.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Referring to Fig. 1-3, a kind of reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown, and Specific construction step includes:
(1) on steel reinforcement cage 1, design the pile crown interface 3 of level；
(2) at least one directional expansion pipe 4 installed at the inclined upward of pile crown interface 3, and directional expansion pipe 4 is 5-15 ° with the angle of pile crown interface 3, and steel reinforcement cage 1 is stretched out in directional expansion pipe 4 upper end, and the central shaft of steel reinforcement cage 1 is pointed in lower end；The two ends up and down of described directional expansion pipe 4 are sealed with upper plug head 45 and lower end cap 41 respectively, prevent concrete from entering directional expansion pipe 4, the bracing wire 47 for upper plug head 45 being extracted directional expansion pipe 4 it is also associated with on described upper plug head 45, described directional expansion pipe 4 includes outer expansion tube 41 and the interior expansion tube 44 being set in together, and it is provided with spring 43 between outer expansion tube 41 and interior expansion tube 44, described spring 43 lower end is connected with outer expansion tube 41, upper end is connected with interior expansion tube 44, after extracting upper plug head 45, interior expansion tube 44 stretches out outer expansion tube 42 in upper end under spring 43 acts on, both the length of upper directional expansion pipe 4 can have been increased, can be layered again, improve the expansion rate of directional expansion pipe 4, linker can also be formed with air, contribute to the injection of swelling agent；
(3) outside of the every vertical reinforcement 6 of the steel reinforcement cage 1 of pile crown interface more than 3 is set with isolated tube 5, and isolated tube 5 and vertical reinforcing bar 6 matched in clearance, isolated tube 5 upper and lower side does sealing and processes；Described isolated tube 5 uses plastic tube (pvc pipe) or metal tube or foam software, prevents the concrete of pile crown from contacting with vertical reinforcement 6, plays insulation blocking effect；
(4) steel reinforcement cage 1 is put into ground well, concrete perfusion 2, after concrete 2 solidification forming, obtain building lot stake；
(5) when excavating pile crown, finding out directional expansion pipe 4 upper end, extract upper plug head 45, inject swelling agent in directional expansion pipe 4, after certain time, swelling agent acutely expands, and produces huge expansive force, and pile crown can rupture automatically, and does not produce sand and dust.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of specification is only for clarity sake, specification should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (4)
1. a reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown, it is characterised in that Specific construction step includes:
(1) on steel reinforcement cage, design the pile crown interface of level；
(2) at the interfacial inclined upward of pile crown, at least one directional expansion pipe is installed；The two ends up and down of described directional expansion pipe with upper plug head and lower end cap sealing, prevent concrete from entering directional expansion pipe respectively；
(3) outside of every vertical reinforcement of steel reinforcement cage more than pile crown interface is set with isolated tube, and isolated tube and vertical reinforcing bar matched in clearance, isolated tube upper and lower side does sealing and processes；
(4) steel reinforcement cage being put into ground well, concrete perfusion, concrete setting obtains building lot stake after shaping；
(5) when excavating pile crown, finding out directional expansion pipe upper end, extract upper plug head, inject swelling agent in directional expansion pipe, pile crown can rupture automatically；
Described directional expansion pipe includes the outer expansion tube that is set in together and interior expansion tube, and between outer expansion tube and interior expansion tube, it being provided with spring, described lower spring end is connected with outer expansion tube, and upper end is connected with interior expansion tube, after extracting upper plug head, outer expansion tube is stretched out in interior expansion tube upper end under the action of the spring.
Reinforcing bar the most according to claim 1 is isolated dustless orientation and is autotomyed the construction method of pile crown, it is characterised in that described directional expansion pipe and the interfacial angle of pile crown are 5-15 °, and steel reinforcement cage is stretched out in directional expansion pipe upper end, and the central shaft of steel reinforcement cage is pointed in lower end.
Reinforcing bar the most according to claim 1 is isolated dustless orientation and is autotomyed the construction method of pile crown, it is characterised in that be also associated with the bracing wire for upper plug head is extracted directional expansion pipe on described upper plug head.
Reinforcing bar the most according to claim 1 is isolated dustless orientation and is autotomyed the construction method of pile crown, it is characterised in that described isolated tube uses plastic tube or metal tube foam software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410666445.3A CN104404950B (en) | 2014-11-20 | 2014-11-20 | A kind of reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410666445.3A CN104404950B (en) | 2014-11-20 | 2014-11-20 | A kind of reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104404950A CN104404950A (en) | 2015-03-11 |
| CN104404950B true CN104404950B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410666445.3A Active CN104404950B (en) | 2014-11-20 | 2014-11-20 | A kind of reinforcing bar is isolated dustless orientation and is autotomyed the construction method of pile crown |
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Families Citing this family (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 |
| CN106400804A (en) * | 2016-11-17 | 2017-02-15 | 宁波市政工程建设集团股份有限公司 | Obstructing pulling method pile digging construction device and method |
| CN106930289B (en) * | 2017-03-10 | 2019-03-12 | 东南大学 | A kind of noiseless broken pile device and broken pile method |
| CN108589728B (en) * | 2018-05-07 | 2020-01-24 | 安徽省公路桥梁工程有限公司 | Construction method of ecological pile cutting system of cast-in-situ bored pile |
| 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 |
| CN109457690A (en) * | 2018-12-18 | 2019-03-12 | 北京市市政四建设工程有限责任公司 | A kind of application static(al) abolishes pile crown system and its restructuring bankrupt |
| CN111424664A (en) * | 2020-04-17 | 2020-07-17 | 中铁九局集团第七工程有限公司 | Construction method for removing pile head of pre-fractured bored pile |
| CN114319325A (en) * | 2022-02-21 | 2022-04-12 | 大连海事大学 | Bored concrete pile head reinforcing bar protective case |
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2014
- 2014-11-20 CN CN201410666445.3A patent/CN104404950B/en active Active
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| CN104404950A (en) | 2015-03-11 |
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