CN106522209A - Perfusion construction method of cast-in-situ bored pile for revolving-boring construction of karst cave - Google Patents
Perfusion construction method of cast-in-situ bored pile for revolving-boring construction of karst cave Download PDFInfo
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- CN106522209A CN106522209A CN201610875132.8A CN201610875132A CN106522209A CN 106522209 A CN106522209 A CN 106522209A CN 201610875132 A CN201610875132 A CN 201610875132A CN 106522209 A CN106522209 A CN 106522209A
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- concrete
- borehole cleaning
- situ bored
- bored pile
- engineering method
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Classifications
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
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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 relates to the technical field of pile foundation projects, in particular to a perfusion construction method of a cast-in-situ bored pile for revolving-boring construction of a karst cave. The perfusion construction method comprises the following steps: 1, borehole cleaning; 2, processing of a reinforcement cage; 3, hoisting of the reinforcement cage; 4, mounting of a conduit and a funnel; 5, pouring of first-batch concrete; 6, pouring of concrete to the pile top; and 7, pulling-out of a pile casing. According to the perfusion construction method, as sufficient water head is kept in a borehole during borehole cleaning, borehole collapse can be effectively prevented; as continuous concrete casting is adopted, pile breakage can be effectively prevented; and environmental pollution can be also avoided.
Description
Technical field
The present invention relates to pile foundation engineering technique field, and in particular to rotary digging construction solution cavity cast-in-situ bored pile perfusion engineering method.
Background technology
Quality of the relationship between quality of pile foundation engineering to whole building project subject quality, therefore the construction of pile foundation engineering is necessary
There are enough quality assurances.For the pile foundation construction in general stratum site area, existing technological level has been able to ensure stake
Base construction quality, and for complicated geological condition, during construction, difficulty is very big, need to also update in terms of technology,
It is big just because of difficulty of construction, under existing instillation process, easily there is collapse hole, broken pile, environmental pollution.
The content of the invention
Present invention aims to the defect and deficiency of prior art, there is provided a kind of rotary digging construction solution cavity drill-pouring
Stake irrigates engineering method, and its concrete engineering method is：1st, borehole cleaning；2nd, steel reinforcement cage processing；3rd, reinforcing bar cage hoisting；4th, conduit and funnel are installed；
5th, pour first batch of concrete；6th, casting concrete is to stake top；7th, extract casing.
After said structure, the present invention has the beneficial effect that：Rotary digging construction solution cavity cast-in-situ bored pile of the present invention is filled
Note engineering method, its enough head in retaining hole when borehole cleaning, can effectively prevent the hole that collapses；It adopts continuous concreting,
Broken pile can effectively be prevented；It can also prevent the pollution of the environment.
Specific embodiment
Describe the present invention below in conjunction with specific embodiment in detail, illustrative examples therein and explanation are only used for
The present invention is explained, but it is not as a limitation of the invention.
Rotary digging construction solution cavity cast-in-situ bored pile described in this specific embodiment irrigates engineering method, and its concrete engineering method is：1、
Borehole cleaning；2nd, steel reinforcement cage processing；3rd, reinforcing bar cage hoisting；4th, conduit and funnel are installed；5th, pour first batch of concrete；6th, casting concrete
To stake top；7th, extract casing.
Further：Using brill rotary digging borehole cleaning under rotary drilling rig during borehole cleaning；Mud displacement method borehole cleaning is adopted during borehole cleaning；Borehole cleaning
When retaining hole in enough heads.
Further：Hole position is directed at by human assistance during lower cage, is kept vertical, put down gently, slow play, it is to avoid collision hole wall.
Further：Under conduit, mouth retains 25-40cm with hole bottom distance；Concreting successively should be poured；Pour
During measure concrete surface with plummet, calculate the depth of conduit lower end Transducers Embedded in Concrete, and make a record；Should in casting process
The mud overflowed in wellhole is drained to into mud pit.
Borehole cleaning：After rotary drilling rig pore-forming, sediment will not be too thick, can generally individually meet design requirement, such as finds sediment thickness
More than design standard, can be using rotary digging borehole cleaning be bored under rotary drilling rig, if it is necessary, mud displacement method borehole cleaning may also be employed.Borehole cleaning
When it is noted that it is following some：
1. enough heads in retaining hole, prevent the hole that collapses；
2. the method for not handy hole depth of backbreaking substitutes borehole cleaning；
3., after steel reinforcement cage is hung in, before pouring underwater concrete, mud property index and bottom hole precipitation in hole should be checked again for
Thickness, such as exceedes regulation, should carry out second borehole cleaning, can pouring underwater concrete after meeting the requirements.
Steel reinforcement cage is processed and is lifted：
Steel reinforcement cage is processed：Steel reinforcement cage is applied in strict accordance with design drawing and related code using live processing and fabricating, processing dimension.
According to design drawing calculate stirrup materials length, cage bar distribution segment length, by after required bar straightening with cutting machine in batch
Cut it is standby, and the specification according to steel bar meter and numbering difference respectively be listed stack.
Hole position is directed at by human assistance during lower cage, is kept vertical, put down gently, slow play, it is to avoid collision hole wall.If in decentralization process
Run into obstacle to stop immediately, ascertain the reason and processed, forbid Gao Timeng to put and force down.During decentralization steel reinforcement cage, technology people
Member answers strict control cage top mark on the scene high.
Concreting：
First batch of concrete → the casting concrete of conduit and funnel → pour is installed to stake top → extract casing.Conduit is installed first,
Conduit is hung in hole with crane, position keeps placed in the middle, under conduit, mouth retains 25-40cm or so with hole bottom distance.The stake of this engineering method
Footpath 790mm, first batch of concreting amount is typically in 2m3, concreting successively should pour.Surveyed with plummet in casting process
Measurement concrete surface, calculates the depth of conduit lower end Transducers Embedded in Concrete, and makes a record, and will should overflow in wellhole in casting process
Mud be drained to mud pit, arbitrarily must not discharge, prevent pollute environment.
Karst Cave Formation filling concrete key points for operation
General stratum, first batch of concreting amount are not less than 1.0m in ensureing conduit base opening Transducers Embedded in Concrete, lead in casting process
Pipe buried depth in the concrete is answered between 2.0m-6.0m, and concreting must be continuous, prevent broken pile.The full mistake of concreting
Journey is responsible for and is made a record by engineering department special messenger.
Depth of tremie should suitably be deepened on this basis for Karst Cave Formation concrete perfusion, preferably in 5m or so.Do so
Purpose prevent the deadweight in casting concrete excessive, by hole wall at solution cavity wash open to make concrete flow into solution cavity, make concrete
Face drastically declines, and causes broken pile.
Rotary digging construction solution cavity cast-in-situ bored pile perfusion engineering method of the present invention, it is enough in retaining hole when borehole cleaning
Head, can effectively prevent the hole that collapses；It adopts continuous concreting, can effectively prevent broken pile；It can also prevent the pollution of the environment.
The above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application scope,
Equivalence changes or modification that feature and principle are done, are included in the range of present patent application.
Claims (4)
1. rotary digging construction solution cavity cast-in-situ bored pile irrigates engineering method, it is characterised in that：Its concrete engineering method is：1st, borehole cleaning；2nd, reinforcing bar
Cage is processed；3rd, reinforcing bar cage hoisting；4th, conduit and funnel are installed；5th, pour first batch of concrete；6th, casting concrete is to stake top；7th, pull out
Go out casing.
2. rotary digging construction solution cavity cast-in-situ bored pile according to claim 1 irrigates engineering method, it is characterised in that：Adopt during borehole cleaning
Rotary digging borehole cleaning is bored under rotary drilling rig；Mud displacement method borehole cleaning is adopted during borehole cleaning；Enough heads in retaining hole during borehole cleaning.
3. rotary digging construction solution cavity cast-in-situ bored pile according to claim 1 irrigates engineering method, it is characterised in that：By people during lower cage
Work auxiliary alignment hole position, keeps vertical, puts down gently, slow play, it is to avoid collision hole wall.
4. rotary digging construction solution cavity cast-in-situ bored pile according to claim 1 irrigates engineering method, it is characterised in that：Under conduit mouth with
Hole bottom distance retains 25-40cm；Concreting successively should be poured；With plummet measurement concrete surface in casting process,
The depth of conduit lower end Transducers Embedded in Concrete is calculated, and is made a record；Casting process should by wellhole in the mud that overflows be drained to
Mud pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875132.8A CN106522209A (en) | 2016-10-08 | 2016-10-08 | Perfusion construction method of cast-in-situ bored pile for revolving-boring construction of karst cave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875132.8A CN106522209A (en) | 2016-10-08 | 2016-10-08 | Perfusion construction method of cast-in-situ bored pile for revolving-boring construction of karst cave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106522209A true CN106522209A (en) | 2017-03-22 |
Family
ID=58332945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610875132.8A Pending CN106522209A (en) | 2016-10-08 | 2016-10-08 | Perfusion construction method of cast-in-situ bored pile for revolving-boring construction of karst cave |
Country Status (1)
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| CN (1) | CN106522209A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136745A (en) * | 1992-04-28 | 1994-05-17 | J D F:Kk | Construction method for hollow widened bottom cast-in-place concrete pile |
| CN102400460A (en) * | 2011-11-30 | 2012-04-04 | 昆明捷程桩工有限责任公司 | Construction method for preventing pile diameter of concrete pouring pile from being varied |
| CN103603342A (en) * | 2013-11-01 | 2014-02-26 | 中冶天工上海十三冶建设有限公司 | Construction method of ultra-long bored concrete pile with large-diameter casing combination |
| CN103615001A (en) * | 2013-11-27 | 2014-03-05 | 宁波盛宏建设工程有限公司 | Bored pile construction method for reinforcing cage framework layered installation |
| CN104153352A (en) * | 2014-07-31 | 2014-11-19 | 广西科技大学 | Karst geology rotary-drilling bored concrete pile hole forming process |
-
2016
- 2016-10-08 CN CN201610875132.8A patent/CN106522209A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136745A (en) * | 1992-04-28 | 1994-05-17 | J D F:Kk | Construction method for hollow widened bottom cast-in-place concrete pile |
| CN102400460A (en) * | 2011-11-30 | 2012-04-04 | 昆明捷程桩工有限责任公司 | Construction method for preventing pile diameter of concrete pouring pile from being varied |
| CN103603342A (en) * | 2013-11-01 | 2014-02-26 | 中冶天工上海十三冶建设有限公司 | Construction method of ultra-long bored concrete pile with large-diameter casing combination |
| CN103615001A (en) * | 2013-11-27 | 2014-03-05 | 宁波盛宏建设工程有限公司 | Bored pile construction method for reinforcing cage framework layered installation |
| CN104153352A (en) * | 2014-07-31 | 2014-11-19 | 广西科技大学 | Karst geology rotary-drilling bored concrete pile hole forming process |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |