CN102587380A - Construction method for wholly removing drilling pile head - Google Patents

Construction method for wholly removing drilling pile head Download PDF

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Publication number
CN102587380A
CN102587380A CN2012100276239A CN201210027623A CN102587380A CN 102587380 A CN102587380 A CN 102587380A CN 2012100276239 A CN2012100276239 A CN 2012100276239A CN 201210027623 A CN201210027623 A CN 201210027623A CN 102587380 A CN102587380 A CN 102587380A
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CN
China
Prior art keywords
pile
construction
foundation
crown
pile crown
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Pending
Application number
CN2012100276239A
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Chinese (zh)
Inventor
李永迪
谭粮好
赵志平
李再春
李妹
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Hunan No2 Engineering Co Ltd
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Hunan No2 Engineering Co Ltd
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Publication date
Application filed by Hunan No2 Engineering Co Ltd filed Critical Hunan No2 Engineering Co Ltd
Priority to CN2012100276239A priority Critical patent/CN102587380A/en
Publication of CN102587380A publication Critical patent/CN102587380A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a construction method for wholly removing a drilling pile head, which belongs to building construction methods and comprises the following steps: 1) sheathing and fixing sleeves on the upper end of a main steel bar of an exposed bearing platform of a rebar cage and the upper end of an acoustic testing pipe; 2) placing a rebar cage sheathed with a sleeve in a pile hole and pouring concrete so as to form a pile foundation; 3) excavating a bearing platform pit when the pile foundation reaches to certain strength; 4) drilling on a position about 10cm above top elevation of a preset pile top in the radial direction along the pile foundation diameter after a foundation pit is excavated; 5) inserting a separating wedge into each drilling hole, hitting the wedges with external force till that the pile head and a pile body are completely separated; and 6) lifting away the pile head from the pile body by a lifting device. The construction method for wholly removing the drilling pile head has a wide application range, materials are easily accessible, and the method is simple and convenient in construction and operation, fast in construction speed, reliable in construction quality, and economical and reasonable. The construction method can well remove the pile head, reduce labor intensity, reduce dust and noise to the greatest extent, and also protect environment and meet green construction requirements.

Description

The whole breaking construction method of a kind of drilled pile pile crown
Technical field
The present invention relates to a kind of construction techniques, specifically is the whole breaking construction method of a kind of drilled pile pile crown.
Background technology
Bored pile is because of its reliable in quality, and ground adaptability is strong, is widely used in the high building project; On the other hand, it is big that the bored pile of highrise building has a diameter, ultraly irritates many characteristics, thereby it is a difficult problem that the pile crown of large diameter pile foundation is abolished always.For a long time, in engineering construction, adopt conventional artificial to abolish basically or artificial auxiliary small-sized machine is abolished; The manpower and materials of labor; And speed is very slow, to pile quality, the damage of pile body reinforcing bar greatly, can not adapt to the desired efficient speed of application of present infrastructure development project; Pile crown is abolished in the process also because of airborne dust is big, and environment is polluted.
Summary of the invention
The technical problem that the present invention will solve is, to the defective that prior art exists, proposes the whole breaking construction method of a kind of drill-pouring pile head, and it is applied widely; Draw materials conveniently, constructing operation is easy, and speed of application is very fast; Reliable construction quality, economical rationality is when finely abolishing pile crown; Can also save manual work, reduce airborne dust and noise to greatest extent, protect bad border, satisfy the requirement of green construction.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is that the step of the whole breaking construction method of said drill-pouring pile head is:
(1) after the stake hole drill of bored pile is good, before the mounting reinforcing steel bars cage of said stake hole, puts sleeve pipe expose main muscle upper end and the sound detecting pipe of cushion cap in this reinforcing cage on, and sleeve pipe is fixed and made sleeve pipe that axial float not take place; The bottom of sleeve pipe is positioned at the predetermined following 5cm-10cm of height of pile top place, and said predetermined height of pile top is meant the height of pile top of design;
The reinforcing cage that (2) said sleeve pipe will be housed is put into a hole, and concrete perfusion forms pile foundation;
(3) after pile foundation intensity reaches 68%-72%, excavation cushion cap foundation ditch;
(4) after the cushion cap excavation of foundation pit was accomplished, at the above 8cm-12cm of predetermined height of pile top place, along the pile foundation radial bore, drilling depth was 0.18 times-0.22 times of pile foundation diameter, and drilling hole amount is 6-16;
(5) in each boring, insert to separate chock, hit chock with external force then and chock is deepened continuously in the boring, the pile body below the bore position of the pile crown more than the bore position of pile foundation and this pile foundation separates fully;
(6) with lifting appliance pile crown is hung pile body, realize that promptly pile crown integral body abolishes.
Below the present invention made further specify.
In the above-mentioned steps (1), when making reinforcing cage, must make all vertical main muscle parallel, broken line can not be arranged with the stake axle; Said sleeve pipe can be that process in advance compound takes off pine cover or PE pipe, or other suitable sleeve pipe, and these sleeve pipes make pile crown concrete and main reinforcement not bond.
In above-mentioned steps (4), implement small-sized rigs such as the available pneumatic pick of boring; A plurality of borings are preferably on same (radial section) circumference and evenly distribute.
Implement above-mentioned steps (6), the pile crown that can adopt backhoe or loader or other hanging devices to separate is fully sling, and is placed on the pile crown storage space that the foundation ditch periphery configures; In the lifting process, the pile crown of this top section is vertically carried and being carried, and the pile crown structure just looks like that honeycomb briquette is the same.
Can clear up the abandoning of pile crown to appointment that hangs out at last and put the place.
Said method of the present invention; With sleeve pipe be inserted in will the amputation pile crown main reinforcement and sound detecting pipe outer end; Just sleeve directly is inserted in main reinforcement and the sound detecting pipe outer end face that reinforcing cage exposes cushion cap; The main muscle and the sound detecting pipe that reinforcing cage are stretched into cushion cap all wrap up, seal, and concrete and reinforcing bar are isolated, thereby the pile crown concrete is not bonded with main reinforcement.Before the foundation platform construction, can directly answer amputation highly whenever at a distance from the boring of 1/8 place along stake, insert in the hole with the separation chock, pile crown is separated with pile body, utilize lifting appliance to sling, deliver to stacking place.
The inventive method is preferably the Churn drill pore-creating filling pile; Certainly, also can be abrasion drill pore-creating filling pile, underground electric borer pore-creating filling pile, drilled pressure filling castinplace pile, squeezed multi-branch bearing disk and many dish castinplace piles and adopt concrete to water the hand excavated pile of construction under water.Speed of application is fast, and operation labor intensity is low.
Compare with existing job practices, the invention has the beneficial effects as follows: job practices of the present invention is applied widely, draws materials conveniently, and constructing operation is easy, and speed of application is very fast, reliable construction quality, economical rationality; When finely abolishing pile crown, manual work be can also reduce, airborne dust and noise reduced to greatest extent, protect bad border, satisfy the requirement of green construction.
Description of drawings
Fig. 1 is the sketch map at pile crown main reinforcement upper end mounting sleeve (PE pipe) of an embodiment of the present invention.
In the drawings:
The 1-main reinforcement; The 2-stirrup; The 3-sleeve pipe.
The specific embodiment
The whole breaking construction method of a kind of drilled pile pile crown comprises:
1. material and facility
(1) material is as shown in table 1
Table 1 main material is equipped with table
(2) plant is as shown in table 2
The plant that table 2 is selected for use
2. construction technology parameter
Before the formal construction, must select rational construction technology parameter, specifically as shown in table 3.
Table 3 construction technology parameter
3. construction sequence:
(1) after the stake hole drill of bored pile is good, before the mounting reinforcing steel bars cage of said stake hole, puts sleeve pipe expose main muscle upper end and the sound detecting pipe of cushion cap in this reinforcing cage on, and sleeve pipe is fixed and made sleeve pipe that axial float not take place; The bottom of sleeve pipe is positioned at the predetermined following 5cm-10cm of height of pile top place, and said predetermined height of pile top is meant the height of pile top of design;
Wherein, the drilled pile reinforcing cage is made and should be noted: all vertical main muscle, must be parallel with the stake axle, and broken line can not be arranged.
The PE pipe of pile crown main reinforcement is installed: after boring and reinforcing bar binding are accomplished, in pile crown main reinforcement upper end PE protection tube (sleeve pipe) is installed, pile foundation reinforcing bar in place then is like Fig. 1.It mainly is before boring finishes back mounting reinforcing steel bars cage that pile crown integral body is abolished method, and sleeve pipe directly is inserted in main muscle and the sound detecting pipe outer end face that reinforcing cage exposes cushion cap, and the main muscle and the sound detecting pipe that reinforcing cage are stretched into cushion cap all wrap up, seal.Compoundly take off pine cover or the main effect of PE pipe is that pile crown concrete and main muscle are not bonded.
Among the present invention; Said sleeve pipe (compound pine cover or the PE pipe of taking off) mainly is arranged on the pile crown part, and in order to guarantee the separation of pile crown, casing shoe is located at line of cut (on the pile body; The circumference of the periphery of the radial section at bore position place) position of 75mm under; Can adopt adhesive tape to fix between body bottom and the main reinforcement, and adhesive tape can go deep into pile body 5~10cm below casing shoe, the upper end is way herewith.For the integral position that guarantees sleeve pipe is accurate, the adhesive tape colligation that can in pile crown, will be wrapped on the reinforcing bar with the 22# galvanized wire is fixed, and guarantees that play does not take place for it, with its fixed-site.
In the used sleeve pipe, the compound pine cover that takes off is the sleeve pipe of duroplasts material, to guarantee in perfusion, not squeezed flat inefficacy by concrete; Casing inner diameter should be chosen than the big 2mm~5mm of main reinforcement diameter, guarantees that reinforcing bar separates with sleeve pipe.The PE pipe directly adopts the suitable PE pipe of selling on the market of diameter to get final product.
The reinforcing cage that (2) said sleeve pipe will be housed is put into a hole, and concrete perfusion forms pile foundation;
(3) after pile foundation intensity reaches 70%, excavation cushion cap foundation ditch; In the cushion cap digging process, can not damage or crooked the main muscle of pile crown, otherwise it is unfavorable that integral body is abolished pile crown, must protect.
(4) after the cushion cap excavation of foundation pit was accomplished, at the above 10cm of predetermined height of pile top place, along the pile foundation radial bore, drilling depth was 0.2 times of pile foundation diameter, and drilling hole amount is 8, and boring evenly distributes along a circumference; Boring bar tool is a pneumatic pick;
(5) in each boring, insert the separation chock; Use external force (sledgehammer) to hit chock then and chock is deepened continuously in the boring; Simultaneously, can adopt backhoe that the pile crown that separates is rocked, the pile body below the bore position of the pile crown more than the bore position of pile foundation and this pile foundation separates fully;
(6) with lifting appliance pile crown is hung pile body, realize that promptly pile crown integral body abolishes.The pile crown that can adopt backhoe or loader or other hanging devices to separate is fully sling, and is placed on the pile crown storage space that the foundation ditch periphery configures.
The abandoning of pile crown to appointment that cleaning hangs out put the place.

Claims (6)

1. the whole breaking construction method of drilled pile pile crown is characterized in that, steps of the method are:
(1) after the stake hole drill of bored pile is good, before the mounting reinforcing steel bars cage of said stake hole, puts sleeve pipe expose main muscle upper end and the sound detecting pipe of cushion cap in this reinforcing cage on, and sleeve pipe is fixed and made sleeve pipe that axial float not take place; The bottom of sleeve pipe is positioned at the predetermined following 5cm-10cm of height of pile top place, and said predetermined height of pile top is meant the height of pile top of design;
The reinforcing cage that (2) said sleeve pipe will be housed is put into a hole, and concrete perfusion forms pile foundation;
(3) after pile foundation intensity reaches 68%-72%, excavation cushion cap foundation ditch;
(4) after the cushion cap excavation of foundation pit was accomplished, at the above 8cm-12cm of predetermined height of pile top place, along the pile foundation radial bore, drilling depth was 0.18 times-0.22 times of pile foundation diameter, and drilling hole amount is 6-16;
(5) in each boring, insert to separate chock, hit chock with external force then and chock is deepened continuously in the boring, the pile body below the bore position of the pile crown more than the bore position of pile foundation and this pile foundation separates fully;
(6) with lifting appliance pile crown is hung pile body, realize that promptly pile crown integral body abolishes.
2. according to the whole breaking construction method of the said drilled pile pile crown of claim 1, it is characterized in that in the step (4), boring evenly distributes along a circumference.
3. according to the whole breaking construction method of the said drilled pile pile crown of claim 1, it is characterized in that said casing inner diameter is than the big 2mm~5mm of main reinforcement diameter.
4. the whole breaking construction method of drilled pile pile crown according to claim 1 is characterized in that the vertical main reinforcement of all of reinforcing cage is parallel with the stake axle.
5. the whole breaking construction method of drilled pile pile crown according to claim 1 is characterized in that, adopt adhesive tape to fix between sleeve pipe body bottom and the main reinforcement, and adhesive tape gos deep into pile body 5~10cm below casing shoe; The adhesive tape colligation that in pile crown, will be wrapped on the main reinforcement with the 22# galvanized wire is fixed.
6. the whole breaking construction method of drilled pile pile crown according to claim 1 is characterized in that, when with lifting appliance pile crown being hung pile body, adopts backhoe that the pile crown that separates is rocked simultaneously, separates fully with the pile foundation concrete with reinforcing bar to guarantee pile crown.
CN2012100276239A 2012-02-08 2012-02-08 Construction method for wholly removing drilling pile head Pending CN102587380A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104294819A (en) * 2014-11-04 2015-01-21 昆明学院 Construction method of cast-in-place pile
CN104343115A (en) * 2014-11-13 2015-02-11 中交隧道工程局有限公司 Structure and method for integrally breaking pile head of pile foundation
CN106087981A (en) * 2016-06-08 2016-11-09 中国十七冶集团有限公司 A kind of cast-in-situ bored pile pile crown and pile crown restructuring bankrupt thereof
CN106120792A (en) * 2016-08-11 2016-11-16 北京城建七建设工程有限公司 A kind of pile foundation pile crown concrete prestripping assembly and construction method
CN106320328A (en) * 2016-10-31 2017-01-11 张兆吉 Pile head chiseling auxiliary device and grouting pile preparation method
CN106400802A (en) * 2016-08-24 2017-02-15 中交公局厦门工程有限公司 Integral quick lifting method for pile head of drilled pile during pre-embedding and drilling-free ring-cutting
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
CN108193684A (en) * 2017-12-18 2018-06-22 中国二十冶集团有限公司 Cast-in-situ bored pile pile crown detaches removing method
CN108589727A (en) * 2018-04-27 2018-09-28 中国建筑第八工程局有限公司 The construction method of bored concrete pile broken pile head
CN109267573A (en) * 2018-09-07 2019-01-25 江苏兴厦建设工程集团有限公司 A kind of method that cast-in-situ bored pile pile crown is abolished
CN109778843A (en) * 2019-01-29 2019-05-21 中建八局轨道交通建设有限公司 Cast-in-place pile concrete perfusion top surface control and pile crown pull out construction method
CN110185036A (en) * 2019-05-31 2019-08-30 五冶集团上海有限公司 A kind of concrete filling pile head restructuring bankrupt

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Publication number Priority date Publication date Assignee Title
JPS59192124A (en) * 1983-04-13 1984-10-31 Sumitomo Cement Co Ltd Pile head treatment and multiple tube therefor
CN101634147A (en) * 2009-07-17 2010-01-27 中冶实久建设有限公司 Method for demolishing ultra high cast-in-place pile head
CN102312429A (en) * 2011-07-12 2012-01-11 中铁西北科学研究院有限公司 Rapid separation and integral hoisting method for pile head of cast-in-place concrete pile

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JPS59192124A (en) * 1983-04-13 1984-10-31 Sumitomo Cement Co Ltd Pile head treatment and multiple tube therefor
CN101634147A (en) * 2009-07-17 2010-01-27 中冶实久建设有限公司 Method for demolishing ultra high cast-in-place pile head
CN102312429A (en) * 2011-07-12 2012-01-11 中铁西北科学研究院有限公司 Rapid separation and integral hoisting method for pile head of cast-in-place concrete pile

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104294819A (en) * 2014-11-04 2015-01-21 昆明学院 Construction method of cast-in-place pile
CN104294819B (en) * 2014-11-04 2016-04-27 昆明学院 A kind of construction method of castinplace pile
CN104343115A (en) * 2014-11-13 2015-02-11 中交隧道工程局有限公司 Structure and method for integrally breaking pile head of pile foundation
CN106087981A (en) * 2016-06-08 2016-11-09 中国十七冶集团有限公司 A kind of cast-in-situ bored pile pile crown and pile crown restructuring bankrupt thereof
CN106120792A (en) * 2016-08-11 2016-11-16 北京城建七建设工程有限公司 A kind of pile foundation pile crown concrete prestripping assembly and construction method
CN106400802A (en) * 2016-08-24 2017-02-15 中交公局厦门工程有限公司 Integral quick lifting method for pile head of drilled pile during pre-embedding and drilling-free ring-cutting
CN106320328A (en) * 2016-10-31 2017-01-11 张兆吉 Pile head chiseling auxiliary device and grouting pile preparation method
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
CN108193684A (en) * 2017-12-18 2018-06-22 中国二十冶集团有限公司 Cast-in-situ bored pile pile crown detaches removing method
CN108589727A (en) * 2018-04-27 2018-09-28 中国建筑第八工程局有限公司 The construction method of bored concrete pile broken pile head
CN109267573A (en) * 2018-09-07 2019-01-25 江苏兴厦建设工程集团有限公司 A kind of method that cast-in-situ bored pile pile crown is abolished
CN109778843A (en) * 2019-01-29 2019-05-21 中建八局轨道交通建设有限公司 Cast-in-place pile concrete perfusion top surface control and pile crown pull out construction method
CN110185036A (en) * 2019-05-31 2019-08-30 五冶集团上海有限公司 A kind of concrete filling pile head restructuring bankrupt

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Application publication date: 20120718