CN103215959B - The support construction method that V-arrangement preformed pile is combined with agitation pile - Google Patents

The support construction method that V-arrangement preformed pile is combined with agitation pile Download PDF

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Publication number
CN103215959B
CN103215959B CN201310133744.6A CN201310133744A CN103215959B CN 103215959 B CN103215959 B CN 103215959B CN 201310133744 A CN201310133744 A CN 201310133744A CN 103215959 B CN103215959 B CN 103215959B
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China
Prior art keywords
pile
arrangement
preformed pile
combined
construction
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CN201310133744.6A
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Chinese (zh)
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CN103215959A (en
Inventor
杨峰
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杨众
杨峰
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Priority to CN201310133744.6A priority Critical patent/CN103215959B/en
Publication of CN103215959A publication Critical patent/CN103215959A/en
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Publication of CN103215959B publication Critical patent/CN103215959B/en

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Abstract

A kind of support construction method that V-arrangement preformed pile is combined with agitation pile, comprise V-arrangement preformed pile and cement mixing pile, it is characterized in that described V-arrangement preformed pile is the V-arrangement cross section be made up of expansion upper end, bottom and web, prestress wire is embedded with in V-arrangement preformed pile, described cement mixing pile is located between adjacent reinforced concret precast pile, and the expansion upper end of V-arrangement preformed pile is embedded in cement mixing pile.V-arrangement thin-walled preformed pile cross section reasonable stress, soil compaction is few, and V-arrangement stake width is large, stake number is few, cost is low.

Description

The support construction method that V-arrangement preformed pile is combined with agitation pile
Technical field
The present invention relates to geotechnical engineering field, particularly relate to a kind of soft clay area Deep Foundation Pit Supporting Project.
Background technology
Soft clay area deep foundation pit support usually adopts bored pile or preformed pile in conjunction with cement mixing pile or high-pressure rotary jet grouting pile gear is native and sealing, cement mixing pile or the continuous solid matter of high-pressure rotary jet grouting pile are arranged, but be separated from each other with soldier pile, therefore not only cost is high, and leaks native problem and can not thoroughly solve.The monolithic supporting and protection structure that the prefabricated soldier pile of a kind of V-arrangement thin-walled is engaged with cement mixing pile and construction method have not been reported.
Summary of the invention
Technical problem to be solved by this invention is the deficiency overcoming above-mentioned prior art, provides that a kind of cross section reasonable stress, soil compaction are few, cost economizes and the support construction method that is combined with agitation pile of the V-arrangement preformed pile of easy construction.
According to the support construction method that a kind of V-arrangement preformed pile provided by the invention is combined with agitation pile, comprise V-arrangement preformed pile and cement mixing pile, it is characterized in that described V-arrangement preformed pile is the V-arrangement cross section be made up of expansion upper end, bottom and web, prestress wire is embedded with in V-arrangement preformed pile, described cement mixing pile is located between adjacent reinforced concret precast pile, the expansion upper end of V-arrangement preformed pile is embedded in cement mixing pile, and the support construction method that V-arrangement preformed pile is combined with agitation pile comprises the following steps:
A, dig guide channel;
B, beat cement mixing pile;
C, before cement mixing pile cement-soil does not solidify, construction V-arrangement preformed pile;
D, construction ring beam
The support construction method be combined with agitation pile according to a kind of V-arrangement preformed pile provided by the invention also has following attached technical characteristic:
Described V-arrangement preformed pile top is provided with steel bar concrete ring beam, and the upper end steel strand of V-arrangement preformed pile stretch into certain length in steel bar concrete ring beam.
The construction V-arrangement preformed pile of described step C, employing is covered band and is hung and vibrating hammer piling.
Establish stake guide locating device provided at stake position place before described construction V-arrangement preformed pile.
The support construction method be combined with agitation pile according to a kind of V-arrangement preformed pile provided by the invention compared with prior art tool has the following advantages:
1, V-arrangement thin-walled preformed pile cross section reasonable stress, soil compaction is few, and V-arrangement stake width is large, stake number is few, cost is low.
2, adjacent V-arrangement thin-walled preformed pile is unified by agitation pile, and leakproof soil improves greatly with sealing performance, and agitation pile stake number is few, and leakproof soil reduces with the cost of sealing.
The construction technology of beating preformed pile after 3, first beating agitation pile can reduce frictional force during preformed pile piling, and pile sinking is more convenient, makes Extruded By Soil Precast Piles less simultaneously, little on surrounding enviroment impact.
4, adopt and cover band and hang vibrating hammer pile sinking, without the need to driving piles work plane and low to site requirements, speed of application is fast.
Accompanying drawing explanation
Fig. 1 is composition diagram of the present invention
Fig. 2 is soldier pile sectional drawing of the present invention
Fig. 3 is stake upper end of the present invention constructional drawing
Fig. 4 is pile pressing technology figure of the present invention
Detailed description of the invention
See Fig. 1 to Fig. 3, in the support construction method that a kind of V-arrangement preformed pile provided by the invention is combined with agitation pile, comprise V-arrangement preformed pile 1 and cement mixing pile 2, described V-arrangement preformed pile 1 is the V-arrangement cross section be made up of expansion upper end 11, bottom 12 and web 13, prestress wire 14 is embedded with in V-arrangement preformed pile 1, described cement mixing pile 2 is located between adjacent reinforced concret precast pile, and the expansion upper end 11 of V-arrangement preformed pile 1 is embedded in cement mixing pile 2.Fender post adopts V-arrangement cross section, and a width is strengthened, and stake number reduces, and V-arrangement cross section reasonable stress, anti-bending strength is good, using prestress wire 14 as main muscle, main muscle steel using amount is declined to a great extent, and the stake of V-arrangement cross section also can adopt and keep flat without side form manufacture, and work efficiency is high, low cost of manufacture.Establish agitation pile can prevent between fender post, leaking soil, infiltration, quicksand between adjacent fender post, also can improve the globality of fender post, constraint expands the lateral deformation of upper end 11, thus reduces the moment of flexure of web, and the support construction method that V-arrangement preformed pile is combined with agitation pile is constructed according to the following steps:
A, dig guide channel;
B, beat cement mixing pile;
C, before cement mixing pile cement-soil does not solidify, construction V-arrangement preformed pile;
D, construction ring beam.
The construction method of beating V-arrangement preformed pile after first beating agitation pile both can realize agitation pile and V-arrangement preformed pile is combined closely, the piling frictional force of V-arrangement construction of prefabricated piles can be reduced again, the pile driving pressure requirement to pile press can be reduced, in addition, also can reduce the impact of soil compaction on surrounding enviroment.
See Fig. 3, in above-described embodiment that the present invention provides, described V-arrangement preformed pile 1 top is provided with steel bar concrete ring beam 3, and the upper end steel strand of V-arrangement preformed pile 1 stretch into certain length in steel bar concrete ring beam 3.Fender post unifies by steel bar concrete ring beam, can be connected with the support in foundation ditch simultaneously, wall that steel bar concrete ring beam 3 also can be laid bricks gear soil.
See Fig. 4, in above-described embodiment that the present invention provides, the construction V-arrangement preformed pile 1 of described step C, employing is covered band and is hung 5 and vibrating hammer 6 piling, be specially adapted to silt and roadbed of alluvial silt, and construction requires greatly to reduce to the flatness requirement of ground and work plane, easy construction, civilization, speed are faster, and construction cost also decreases.

Claims (4)

1. the support construction method that is combined with agitation pile of a V-arrangement preformed pile, comprise V-arrangement preformed pile and cement mixing pile, it is characterized in that described V-arrangement preformed pile is the V-arrangement cross section be made up of expansion upper end, bottom and web, prestress wire is embedded with in V-arrangement preformed pile, described cement mixing pile is located between adjacent reinforced concret precast pile, the expansion upper end of V-arrangement preformed pile is embedded in cement mixing pile, and the support construction method that V-arrangement preformed pile is combined with agitation pile comprises the following steps:
A, dig guide channel;
B, beat cement mixing pile;
C, before cement mixing pile cement-soil does not solidify, construction V-arrangement preformed pile;
D, construction ring beam.
2. the support construction method that is combined with agitation pile of V-arrangement preformed pile as claimed in claim 1, it is characterized in that described V-arrangement preformed pile top is provided with steel bar concrete ring beam, the upper end steel strand of V-arrangement preformed pile stretch into certain length in steel bar concrete ring beam.
3. the support construction method that is combined with agitation pile of V-arrangement preformed pile as claimed in claim 1, it is characterized in that the construction V-arrangement preformed pile of described step C, employing is covered band and is hung and vibrating hammer piling.
4. the support construction method that is combined with agitation pile of V-arrangement preformed pile as claimed in claim 1, is characterized in that described construction V-arrangement preformed pile is front and establishes stake guide locating device provided at stake position place.
CN201310133744.6A 2013-04-17 2013-04-17 The support construction method that V-arrangement preformed pile is combined with agitation pile CN103215959B (en)

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CN201310133744.6A CN103215959B (en) 2013-04-17 2013-04-17 The support construction method that V-arrangement preformed pile is combined with agitation pile

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Application Number Priority Date Filing Date Title
CN201310133744.6A CN103215959B (en) 2013-04-17 2013-04-17 The support construction method that V-arrangement preformed pile is combined with agitation pile

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CN103215959B true CN103215959B (en) 2016-03-09

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB639829A (en) * 1945-09-25 1950-07-05 Tito Ognibeni Improvements in or relating to walls adapted to form watertight structures
CN1110352A (en) * 1994-04-04 1995-10-18 曹时中 Method for making soft foundation basement protecting structure
JP2006138095A (en) * 2004-11-11 2006-06-01 Haseko Corp Cast-in-place steel pipe reinforced concrete pile
CN102650127A (en) * 2012-03-15 2012-08-29 上海中技桩业股份有限公司 Precast U-shaped plate pile with mixed structure of steel and concrete
CN202559361U (en) * 2012-04-09 2012-11-28 东南大学 Precast high strength concrete thin-wall steel pipe pile foundation pit supporting structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB639829A (en) * 1945-09-25 1950-07-05 Tito Ognibeni Improvements in or relating to walls adapted to form watertight structures
CN1110352A (en) * 1994-04-04 1995-10-18 曹时中 Method for making soft foundation basement protecting structure
JP2006138095A (en) * 2004-11-11 2006-06-01 Haseko Corp Cast-in-place steel pipe reinforced concrete pile
CN102650127A (en) * 2012-03-15 2012-08-29 上海中技桩业股份有限公司 Precast U-shaped plate pile with mixed structure of steel and concrete
CN202559361U (en) * 2012-04-09 2012-11-28 东南大学 Precast high strength concrete thin-wall steel pipe pile foundation pit supporting structure

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