CN108661046A - The construction method of driven cast-in-place pile - Google Patents
The construction method of driven cast-in-place pile Download PDFInfo
- Publication number
- CN108661046A CN108661046A CN201810428839.3A CN201810428839A CN108661046A CN 108661046 A CN108661046 A CN 108661046A CN 201810428839 A CN201810428839 A CN 201810428839A CN 108661046 A CN108661046 A CN 108661046A
- Authority
- CN
- China
- Prior art keywords
- pile
- pipe
- pile pipe
- concrete
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
Abstract
The present invention provides the construction methods of driven cast-in-place pile, it is characterized in that：Using having air inlet, the sealable pile pipe of other openings in addition to lower mouth；Concrete, upper pile jacking pipe or cooperation tube drawing are pushed using the blowing pressure, undergauge, folder mud, broken pile of existing driven cast-in-place pile and other issues can be well solved.
Description
Technical field
The present invention relates to the construction methods of driven cast-in-place pile, belong to piling Technology field.
Background technology
Existing driven cast-in-place pile is in the edge being eliminated because undergauge, folder mud, broken pile and other issues are more.
Invention content
To play the advantage of driven cast-in-place pile, immersed tube bored existing quality problems are solved, the present invention provides immersed tube fillings
The construction method of stake is noted, it is characterized in that：(1) using having air inlet, the sealable pile pipe of other openings in addition to lower mouth；(2)
Concrete, upper pile jacking pipe or cooperation tube drawing are pushed using the blowing pressure.
Steps are as follows for Specific construction：
A. press the prior art and complete the construction procedure before tube drawing, as needed under good steel reinforcement cage, preferably concrete once fills
Foot；
B. pile pipe opening is closed, by air inlet to air is sent in pile pipe, pushes concrete, upper pile jacking pipe；
C. if air pressure is not enough to jack up pile pipe, tube drawing can be coordinated with original pipe drawing device, until pile pipe goes out ground, terminated；
D. pile pipe goes out in face of ground, if air pressure does not increase, can apply external pressure to pile pipe.
Advantageous effect
Concrete, upper pile jacking pipe are pushed with the blowing pressure, can be well solved undergauge, folder mud, broken pile and other issues is
It will be apparent that needn't elaborate any further.
Specific implementation mode
The top-down soil layer situation of Site Soil：The silty of the miscellaneous fill of about 1m thickness, the thick soft modeling-plastic states of about 7m is viscous
Soil, about 2m thickness is slightly close, in close state fine sand, middle sand, the completely decomposed mud stone of about 1m thickness, the intense weathering munstone of about 3m thickness, below
For middle weathered mudstone.
Stake diameter 406mm, the long 15m of stake are designed, using C60 self-compacting concretes, ultimate bearing capacity 5200kN.
Using static-pressure driven cast-in-place pile, deep 2m is sent.
Pile pipe hypomere be D406*40 seamless steel pipes, long 20m, Q345 materials, epimere be D630*10 spiral steel pipes, long 5m,
Q235 materials, 60 degree of taper tube transitions of upper and lower section；Mouth thickeies height 100mm to external upset (EU) 10mm under pile pipe, and pile top is steel-
Combined concrete pile top, outer diameter D 426.
Using 800 tons of contracting static-pressure piling machines, band mast.
Construction procedure is as follows：
1. pile top is put in a point；
2. pile pipe mixes up verticality to good pile top, then start static pressure, immersed tube, 550 tons of end pressure, immersed tube depth is about
14.8m；
3. descending reinforcing cage, disposable that about 2.5 vertical C60 self-compacting concretes are perfused；
4. with closed buckle by pile pipe epimere it is suitable for reading it is closed after, by the air inlet on closed buckle, with air compressor machine to stake
Air is sent in pipe, pushes concrete, upper pile jacking pipe；While supplying gas, pile pulling pipe on side, air pressure maintains 1~2MPa；To pile pipe in soil
In there is also about when 10m, air pressure heads on to walk in pile pipe, do not have to stake machine coordinate tube drawing；Stop sending there is also about when 2m in soil to pile pipe
Air extracts pile pipe, terminates.
Pile pipe epimere overstriking, is equivalent to hopper, to reduce pile pipe total length.Clip pile pipe hypomere is only embraced, is not embraced on clip pile pipe
Section.
Claims (1)
1. the construction method of driven cast-in-place pile, it is characterized in that：(1) using having air inlet, other openings in addition to lower mouth
Closed pile pipe；(2) the blowing pressure is utilized to push concrete, upper pile jacking pipe or cooperation tube drawing；Steps are as follows for Specific construction：
A. press the prior art and complete the construction procedure before tube drawing, as needed under good steel reinforcement cage, preferably concrete is once filled with enough；
B. pile pipe opening is closed, by air inlet to air is sent in pile pipe, pushes concrete, upper pile jacking pipe；
C. if air pressure is not enough to jack up pile pipe, tube drawing can be coordinated with original pipe drawing device, until pile pipe goes out ground, terminated；
D. pile pipe goes out in face of ground, if air pressure does not increase, can apply external pressure to pile pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810428839.3A CN108661046A (en) | 2018-04-25 | 2018-04-25 | The construction method of driven cast-in-place pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810428839.3A CN108661046A (en) | 2018-04-25 | 2018-04-25 | The construction method of driven cast-in-place pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108661046A true CN108661046A (en) | 2018-10-16 |
Family
ID=63778671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810428839.3A Pending CN108661046A (en) | 2018-04-25 | 2018-04-25 | The construction method of driven cast-in-place pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108661046A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024962A (en) * | 2007-03-22 | 2007-08-29 | 建研地基基础工程有限责任公司 | Vibration pipe-sinking wind pile-pressing machine |
| CN101575852A (en) * | 2008-05-10 | 2009-11-11 | 夏传清 | Construction method of wall-retaining bottom-expanding sinking-pipe cast-in-situ piles |
| CN102817359A (en) * | 2012-08-27 | 2012-12-12 | 河北建设勘察研究院有限公司 | Sealing device of receiving port and construction method of vibrating immersed tube type sand-gravel pile of muddy soft soil foundation via air pressure balance |
| CN104711988A (en) * | 2015-03-18 | 2015-06-17 | 山东省水利科学研究院 | Device and method for eliminating concrete falling rejection and pile end suspension of sinking pipe cast-in-place pile |
-
2018
- 2018-04-25 CN CN201810428839.3A patent/CN108661046A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101024962A (en) * | 2007-03-22 | 2007-08-29 | 建研地基基础工程有限责任公司 | Vibration pipe-sinking wind pile-pressing machine |
| CN101575852A (en) * | 2008-05-10 | 2009-11-11 | 夏传清 | Construction method of wall-retaining bottom-expanding sinking-pipe cast-in-situ piles |
| CN102817359A (en) * | 2012-08-27 | 2012-12-12 | 河北建设勘察研究院有限公司 | Sealing device of receiving port and construction method of vibrating immersed tube type sand-gravel pile of muddy soft soil foundation via air pressure balance |
| CN104711988A (en) * | 2015-03-18 | 2015-06-17 | 山东省水利科学研究院 | Device and method for eliminating concrete falling rejection and pile end suspension of sinking pipe cast-in-place pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181016 |