CN103215959A - Support structure with combined V-shaped precast pile and stirring pile and construction method thereof - Google Patents

Support structure with combined V-shaped precast pile and stirring pile and construction method thereof Download PDF

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Publication number
CN103215959A
CN103215959A CN2013101337446A CN201310133744A CN103215959A CN 103215959 A CN103215959 A CN 103215959A CN 2013101337446 A CN2013101337446 A CN 2013101337446A CN 201310133744 A CN201310133744 A CN 201310133744A CN 103215959 A CN103215959 A CN 103215959A
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CN
China
Prior art keywords
pile
arrangement
preformed pile
construction
agitation
Prior art date
Application number
CN2013101337446A
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Chinese (zh)
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CN103215959B (en
Inventor
杨峰
Original Assignee
杨众
杨峰
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Publication date
Application filed by 杨众, 杨峰 filed Critical 杨众
Priority to CN201310133744.6A priority Critical patent/CN103215959B/en
Publication of CN103215959A publication Critical patent/CN103215959A/en
Application granted granted Critical
Publication of CN103215959B publication Critical patent/CN103215959B/en

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Abstract

The invention provides a support structure with a combined V-shaped precast pile and stirring pile. The support structure comprises a V-shaped precast pile and a cement stirring pile, and is characterized in that the V-shaped precast pile is of a V-shaped section consisting of an enlarged upper end part, a lower end part and a web plate; prestress steel stranded wires are embedded in the V-shaped precast pile; the cement stirring pile is arranged between adjacent reinforced concrete precast piles; and the enlarged upper end part of the V-shaped precast pile is embedded in the cement stirring pile. The V-shaped thin-wall precast pile is reasonable in section stress and less in soil squeezing; and the V-shaped pile is large in width, less in pile quantity and low in manufacturing cost.

Description

Supporting and protection structure that the V-arrangement preformed pile combines with agitation pile and job practices
Technical field
The present invention relates to the geotechnical engineering field, relate in particular to a kind of soft clay area deep foundation pit support engineering.
Background technology
The soft clay area deep foundation pit support adopts bored pile or preformed pile in conjunction with cement mixing pile or high-pressure rotary jet grouting pile retaining soil and sealing usually, the continuous solid matter setting of cement mixing pile or high-pressure rotary jet grouting pile, but be separated from each other with soldier pile, therefore cost height not only, and leak native problem and can not thoroughly solve.The monolithic supporting and protection structure and the job practices of prefabricated soldier pile of a kind of V-arrangement thin-walled and cement mixing pile interlock yet there are no report.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiency of above-mentioned prior art, and a kind of supporting and protection structure and the job practices that the cross section is stressed rationally, soil compaction is few, cost is economized and the V-arrangement preformed pile of easy construction combines with agitation pile is provided.
The supporting and protection structure that combines with agitation pile according to a kind of V-arrangement preformed pile provided by the invention, comprise V-arrangement preformed pile and cement mixing pile, described V-arrangement preformed pile is served as reasons and is enlarged the V-arrangement cross section that upper end, bottom and web are formed, be embedded with prestress wire in the V-arrangement preformed pile, described cement mixing pile is located between the adjacent steel bar concrete preformed pile, and the expansion upper end of V-arrangement preformed pile is embedded in the cement mixing pile.
The supporting and protection structure that combines with agitation pile according to a kind of V-arrangement preformed pile provided by the invention also has following attached technical characterictic:
Described V-arrangement preformed pile top is provided with the steel bar concrete ring beam, and the upper end steel strand of V-arrangement preformed pile stretch into certain-length in the steel bar concrete ring beam.
The job practices of the supporting and protection structure that combines with agitation pile according to a kind of V-arrangement preformed pile provided by the invention may further comprise the steps:
A, dig guide channel;
B, the mud agitation pile of fetching water;
C, before the cement mixing pile cement-soil does not solidify, construction V-arrangement preformed pile;
D, construction ring beam.
The construction V-arrangement preformed pile of described step C adopts to cover to be with and hangs and the vibrating hammer piling.
Establish stake before the described construction V-arrangement preformed pile at place, stake position guide locating device provided.
The supporting and protection structure and the job practices that combine with agitation pile according to a kind of V-arrangement preformed pile provided by the invention compared with prior art have following advantage:
1, V-arrangement thin-walled preformed pile cross section is stressed reasonable, and soil compaction is few, and V-arrangement stake width is big, the stake number is few, cost is low.
2, adjacent V-arrangement thin-walled preformed pile unifies 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.
3, beat earlier the frictional force of the construction technology of beating preformed pile behind the agitation pile can reduce the preformed pile piling time, pile sinking is more convenient, makes the preformed pile soil compaction simultaneously still less, influences little to surrounding enviroment.
4, employing is covered to be with and is hung the vibrating hammer pile sinking, the work plane and low that need not to drive piles to site requirements, and speed of application is fast.
Description of drawings
Fig. 1 is a composition diagram of the present invention
Fig. 2 is a soldier pile sectional drawing of the present invention
Fig. 3 is a stake of the present invention upper end constructional drawing
Fig. 4 is pile pressing technology figure of the present invention
The specific embodiment
Referring to Fig. 1 to Fig. 3, the supporting and protection structure that combines with agitation pile at a kind of V-arrangement preformed pile provided by the invention, comprise V-arrangement preformed pile 1 and cement mixing pile 2, described V-arrangement preformed pile 1 is served as reasons and is enlarged the V-arrangement cross section that upper end 11, bottom 12 and web 13 are formed, be embedded with prestress wire 14 in the V-arrangement preformed pile 1, described cement mixing pile 2 is located between the adjacent steel bar concrete preformed pile, and the expansion upper end 11 of V-arrangement preformed pile 1 is embedded in the cement mixing pile 2.Fender post adopts the V-arrangement cross section, and a width is strengthened, and the stake number reduces, and the V-arrangement cross section is stressed rationally, and anti-bending strength is good, with 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 be adopted and keep flat no side form manufacturing, work efficiency height, low cost of manufacture.Establish agitation pile between adjacent fender post and can prevent to leak soil, infiltration, quicksand between fender post, also can improve the globality of fender post, constraint enlarges the lateral deformation of upper end 11, thereby reduces the moment of flexure of web.
Referring to Fig. 3, the present invention provide on palm fibre state among the embodiment, described V-arrangement preformed pile 1 top is provided with steel bar concrete ring beam 3, the upper end steel strand of V-arrangement preformed pile 1 stretch into certain-lengths in the steel bar concrete ring beam 3.The steel bar concrete ring beam unifies fender post, can link to each other the wall of also can laying bricks on the steel bar concrete ring beam 3 retaining soil simultaneously with the support in the foundation ditch.
According to the job practices that the invention provides the supporting and protection structure that a kind of V-arrangement preformed pile combines with agitation pile, construction according to the following steps:
A, dig guide channel;
B, the mud agitation pile of fetching water;
C, before the cement mixing pile cement-soil does not solidify, construction V-arrangement preformed pile;
D, construction ring beam.
Beat earlier the job practices of beating the V-arrangement preformed pile behind the agitation pile and both can realize that agitation pile and V-arrangement preformed pile combined closely, can reduce the piling frictional force of V-arrangement construction of prefabricated piles again, can reduce pile driving pressure requirement, in addition, also can reduce the influence of soil compaction surrounding enviroment to pile press.
Referring to Fig. 4, the present invention provide on palm fibre state among the embodiment, the construction V-arrangement preformed pile 1 of described step C, employing is covered band and is hung 5 and vibrating hammer 6 pilings, be specially adapted to silt and mucky soil ground, and construction requires the planeness of ground and work plane requires to reduce greatly, and easy construction, civilization, speed are faster, and construction cost also decreases.

Claims (5)

1. supporting and protection structure that the V-arrangement preformed pile combines with agitation pile, comprise V-arrangement preformed pile and cement mixing pile, it is characterized in that described V-arrangement preformed pile is served as reasons enlarges the V-arrangement cross section that upper end, bottom and web are formed, be embedded with prestress wire in the V-arrangement preformed pile, described cement mixing pile is located between the adjacent steel bar concrete preformed pile, and the expansion upper end of V-arrangement preformed pile is embedded in the cement mixing pile.
2. the supporting and protection structure that combines with agitation pile of V-arrangement preformed pile according to claim 1 is characterized in that described V-arrangement preformed pile top is provided with the steel bar concrete ring beam, and the upper end steel strand of V-arrangement preformed pile stretch into certain-length in the steel bar concrete ring beam.
3. the job practices of the supporting and protection structure that combines with agitation pile of a V-arrangement preformed pile may further comprise the steps:
A, dig guide channel;
B, the mud agitation pile of fetching water;
C, before the cement mixing pile cement-soil does not solidify, construction V-arrangement preformed pile;
D, construction ring beam.
4. the support construction method that V-arrangement preformed pile as claimed in claim 3 combines with agitation pile is characterized in that the construction V-arrangement preformed pile of described step C, adopts to cover band and hang and the vibrating hammer piling.
5. the support construction method that V-arrangement preformed pile as claimed in claim 3 combines with agitation pile, it is guide locating device provided to it is characterized in that before the described construction V-arrangement preformed pile establishing at place, stake position stake.
CN201310133744.6A 2013-04-17 2013-04-17 The support construction method that V-arrangement preformed pile is combined with agitation pile CN103215959B (en)

Priority Applications (1)

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

Applications Claiming Priority (1)

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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CN103215959A true CN103215959A (en) 2013-07-24
CN103215959B 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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