CN104120721A - Method for constructing static pressure pile foundation - Google Patents

Method for constructing static pressure pile foundation Download PDF

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Publication number
CN104120721A
CN104120721A CN201310153841.1A CN201310153841A CN104120721A CN 104120721 A CN104120721 A CN 104120721A CN 201310153841 A CN201310153841 A CN 201310153841A CN 104120721 A CN104120721 A CN 104120721A
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CN
China
Prior art keywords
pile
stake
static pressure
verticality
static
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Pending
Application number
CN201310153841.1A
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Chinese (zh)
Inventor
杨哲
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杨哲
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Application filed by 杨哲 filed Critical 杨哲
Priority to CN201310153841.1A priority Critical patent/CN104120721A/en
Publication of CN104120721A publication Critical patent/CN104120721A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for constructing a static pressure pile foundation. The method includes the following steps: (1) measuring and lining, (2) pile machine in-position, (3) pre-cast pile lifting, (4) pile stabilizing, (5) pile pressing, (6) pile connecting, and (7) pile following. The method for constructing the static pressure pile foundation is reasonable in design, a whole pile is high in perpendicularity, various detection data obtained after pile pressing meet the standard and design requirements, and the method is worthy of application and popularization.

Description

A kind of static pressed pile foundation construction method
Technical field
The present invention relates to construction foundation working, relate in particular to a kind of static pressed pile foundation construction method, belong to technical field of building construction.
Background technology
Silent piling construction is to utilize stake machine deadweight body that counter-force is provided, and stake is sent in soil layer, when prefabricated interstitial hydraulic pressure sharply rises, the intensity of soil reduces greatly, at this moment pile body is easy to, and the resistance of stake is mainly from pile top, while penetrating soil layer downwards, the directly resistance of the punching stake end soil body, once piling termination passing in time, soil under pile pore water pressure dribbles, and the soil body occurs fixed, stake side-friction force progressively recovers and improves, thereby makes static pressure obtain larger bearing capacity.
It is poor that existing static pressed pile basis exists whole pile body verticality in the time of construction, thereby cause the pressure-bearing load force of pile body not reach the defect of the requirement of design.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, a kind of static pressed pile foundation construction method is provided, the method is reasonable in design, and whole pile body verticality is high, the various detection data after piling all meet specification and designing requirement, are worthy of popularization.
Technical scheme: a kind of static pressed pile foundation construction method of the present invention, comprises the steps:
(1) measure unwrapping wire: near piling construction region, arrange and control stake and bench mark, axial line control stake should be arranged on apart from exterior wall stake 5~10m place, to control pile foundation axis and absolute altitude;
(2) pile-forming machine perching: according to piling order, Static pressure pile driver is moved to above stake position, and align piles position, Static pressure pile driver is adjusted to level, stable, guarantee not run-off the straight and movement in construction;
(3) lifting preformed pile: the concrete strength that should first ensure concrete precast pile reaches 70% of Intensity Design value and can lift by crane, when lifting preformed pile, preformed pile is winched in Static pressure pile driver fixture, and align piles position, clamp and put into soil, mobile Static pressure pile driver regulates pile verticality, after meeting the requirements, Static pressure pile driver is adjusted to level stable;
(4) steady stake: pile top is inserted behind stake position, and mobile Static pressure pile driver makes the perpendicularity deviation of stake must not exceed 0.5%, and makes Static pressure pile driver in stable state;
(5) piling: the concrete strength that should first ensure concrete precast pile when piling reach Intensity Design value 100% and notice that pressure meter changes and record;
(6) pile extension: adopt welding method pile extension;
(7) pile follower: according to designing requirement pile follower, stake is delivered to design elevation.
Further improve technique scheme, also comprise and cut pile crown, adopt a special machine that cuts, by interior hoop packing pile tube, outer hoop, along interior hoop track travel, is cut a machine and is contained on outer hoop edge, is trapped among on desired position and cuts outward along pile tube, and cutting position is adjustable up and down.
Further, in described step (four), also include the verticality of proofreading and correct stake, adjust the extension elongation of stake machine support oil cylinder plug cock bar, make a machine platform guarantee level, stake is buried after 1~2 meter, the verticality of the plummet messenger wire peg setting up by orthogonal directions, until construction reaches specification and quality control standards (QCS).
Further, described step (six) adopts arc welding, in order to ensure the quality of pile extension, whether verticality and the center line that before welding, first will check upper and lower stake be qualified, the company's of removing steel plate foreign material, the weld seam of pile extension adopts symmetrical welding, and weld seam should be full continuous, and weld seam is no less than two layers and also within naturally cooling 10 minutes, can be pressed in soil.
Further, the centerline error that saves up and down stake in described step (six) when pile extension must not be greater than 10mm, proofreaies and correct verticality, and it is long that allowable variation is less than 1% stake.
Compared with prior art, its beneficial effect is in the present invention: a kind of static pressed pile foundation construction method of the present invention is reasonable in design, and whole pile body verticality is high, and the various detection data after piling all meet specification and designing requirement, are worthy of popularization.
Detailed description of the invention
Below technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
embodiment 1:a kind of static pressed pile foundation construction method, comprises the steps:
(1) measure unwrapping wire: near piling construction region, arrange and control stake and bench mark, axial line control stake should be arranged on apart from exterior wall stake 5~10m place, to control pile foundation axis and absolute altitude;
(2) pile-forming machine perching: according to piling order, Static pressure pile driver is moved to above stake position, and align piles position, Static pressure pile driver is adjusted to level, stable, guarantee not run-off the straight and movement in construction;
(3) lifting preformed pile: the concrete strength that should first ensure concrete precast pile reaches 70% of Intensity Design value and can lift by crane, when lifting preformed pile, preformed pile is winched in Static pressure pile driver fixture, and align piles position, clamp and put into soil, mobile Static pressure pile driver regulates pile verticality, after meeting the requirements, Static pressure pile driver is adjusted to level stable;
(4) steady stake: pile top is inserted behind stake position, and mobile Static pressure pile driver makes the perpendicularity deviation of stake must not exceed 0.5%, and makes Static pressure pile driver in stable state;
(5) piling: the concrete strength that should first ensure concrete precast pile when piling reach Intensity Design value 100% and notice that pressure meter changes and record;
(6) pile extension: adopt welding method pile extension;
(7) pile follower: according to designing requirement pile follower, stake is delivered to design elevation.
(8) cut pile crown, adopt a special machine that cuts, by interior hoop packing pile tube, outer hoop, along interior hoop track travel, is cut a machine and is contained on outer hoop edge, is trapped among on desired position and cuts outward along pile tube, and cutting position is adjustable up and down.
Wherein, in described step (four), also include the verticality of proofreading and correct stake, adjust the extension elongation of stake machine support oil cylinder plug cock bar, make a machine platform guarantee level, stake is buried after 1~2 meter, the verticality of the plummet messenger wire peg setting up by orthogonal directions, until construction reaches specification and quality control standards (QCS).
Described step (six) adopts arc welding, in order to ensure the quality of pile extension, whether verticality and the center line that before welding, first will check upper and lower stake be qualified, the company's of removing steel plate foreign material, the weld seam of pile extension adopts symmetrical welding, weld seam should be full continuous, and weld seam is no less than two layers and also within naturally cooling 10 minutes, can be pressed in soil.
The centerline error that saves up and down stake in described step (six) when pile extension must not be greater than 10mm, proofreaies and correct verticality, and it is long that allowable variation is less than 1% stake.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make in the form and details various variations to it.

Claims (5)

1. a static pressed pile foundation construction method, is characterized in that, comprises the steps:
(1) measure unwrapping wire: near piling construction region, arrange and control stake and bench mark, axial line control stake should be arranged on apart from exterior wall stake 5~10m place, to control pile foundation axis and absolute altitude;
(2) pile-forming machine perching: according to piling order, Static pressure pile driver is moved to above stake position, and align piles position, Static pressure pile driver is adjusted to level, stable, guarantee not run-off the straight and movement in construction;
(3) lifting preformed pile: the concrete strength that should first ensure concrete precast pile reaches 70% of Intensity Design value and can lift by crane, when lifting preformed pile, preformed pile is winched in Static pressure pile driver fixture, and align piles position, clamp and put into soil, mobile Static pressure pile driver regulates pile verticality, after meeting the requirements, Static pressure pile driver is adjusted to level stable;
(4) steady stake: pile top is inserted behind stake position, and mobile Static pressure pile driver makes the perpendicularity deviation of stake must not exceed 0.5%, and makes Static pressure pile driver in stable state;
(5) piling: the concrete strength that should first ensure concrete precast pile when piling reach Intensity Design value 100% and notice that pressure meter changes and record;
(6) pile extension: adopt welding method pile extension;
(7) pile follower: according to designing requirement pile follower, stake is delivered to design elevation.
2. a kind of static pressed pile foundation construction method according to claim 1, it is characterized in that, also comprise and cut pile crown, a machine is cut in employing, by interior hoop packing pile tube, outer hoop is along interior hoop track travel, and a machine that cuts is contained on outer hoop edge, be trapped among on desired position and cut outward along pile tube, cutting position is adjustable up and down.
3. a kind of static pressed pile foundation construction method according to claim 1, it is characterized in that, in described step (four), also include the verticality of proofreading and correct stake, adjust the extension elongation of stake machine support oil cylinder plug cock bar, make a machine platform guarantee level, stake is buried after 1~2 meter, and the verticality of the plummet messenger wire peg setting up by orthogonal directions, until construction reaches specification and quality control standards (QCS).
4. a kind of static pressed pile foundation construction method according to claim 1, it is characterized in that, described step (six) adopts arc welding, whether verticality and the center line that before welding, first will check upper and lower stake be qualified, the company's of removing steel plate foreign material, the weld seam of pile extension adopts symmetrical welding, and weld seam should be full continuous, and weld seam is no less than two layers and also within naturally cooling 10 minutes, can be pressed in soil.
5. a kind of static pressed pile foundation construction method according to claim 1, is characterized in that, the centerline error that saves up and down stake in described step (six) when pile extension is less than 10mm, proofreaies and correct verticality, and it is long that allowable variation is less than 1% stake.
CN201310153841.1A 2013-04-28 2013-04-28 Method for constructing static pressure pile foundation Pending CN104120721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310153841.1A CN104120721A (en) 2013-04-28 2013-04-28 Method for constructing static pressure pile foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310153841.1A CN104120721A (en) 2013-04-28 2013-04-28 Method for constructing static pressure pile foundation

Publications (1)

Publication Number Publication Date
CN104120721A true CN104120721A (en) 2014-10-29

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106677181A (en) * 2016-12-30 2017-05-17 中国十七冶集团有限公司 Construction method solving pipe pile deviation of pile foundation in pressing process
CN106759270A (en) * 2017-01-12 2017-05-31 江苏工程职业技术学院 A kind of prefabricated reinforced concrete resistance to plucking pile construction method with ribbing
CN107604909A (en) * 2017-09-29 2018-01-19 广东广强基础工程有限公司 A kind of piling technique based on factory building
CN107604913A (en) * 2017-09-29 2018-01-19 广东广强基础工程有限公司 A kind of piling technique based on house
CN108086318A (en) * 2018-01-22 2018-05-29 孙国芳 A kind of static pressure construction technique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106677181A (en) * 2016-12-30 2017-05-17 中国十七冶集团有限公司 Construction method solving pipe pile deviation of pile foundation in pressing process
CN106759270A (en) * 2017-01-12 2017-05-31 江苏工程职业技术学院 A kind of prefabricated reinforced concrete resistance to plucking pile construction method with ribbing
CN107604909A (en) * 2017-09-29 2018-01-19 广东广强基础工程有限公司 A kind of piling technique based on factory building
CN107604913A (en) * 2017-09-29 2018-01-19 广东广强基础工程有限公司 A kind of piling technique based on house
CN108086318A (en) * 2018-01-22 2018-05-29 孙国芳 A kind of static pressure construction technique

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20141029

C02 Deemed withdrawal of patent application after publication (patent law 2001)