CN104711984A - Static pressure construction method of prefabricated reinforced concrete pile - Google Patents
Static pressure construction method of prefabricated reinforced concrete pile Download PDFInfo
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- CN104711984A CN104711984A CN201310681962.3A CN201310681962A CN104711984A CN 104711984 A CN104711984 A CN 104711984A CN 201310681962 A CN201310681962 A CN 201310681962A CN 104711984 A CN104711984 A CN 104711984A
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- pile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a static pressure construction method of a prefabricated reinforced concrete pile. The static pressure construction method comprises the following steps: the preparation is performed before the construction; a pile machine is in place, and piling mechanical equipment, a lifting machine and a pressure gauge are checked; a prefabricated pile is lifted, a portal support oil cylinder is started, and a portal is slightly inclined by 15 degrees; the pile is stabilized, after the tip of the pile is inserted into a pile position, a pile press oil cylinder is slightly started , when the pile is inserted into the soil by 50 cm, the verticality of the pile and the horizontality of a platform are corrected again, the pile press oil cylinder is started again, the pile is slowly pressed down, and the construction speed is controlled within 2 m/m; when the pile pressure reaches two times of designed load, or the top of the pile reaches a supporting layer, the pressure can be stabilized at any time; the pile is pressed, a special person is dispatched or automatic recording equipment is started in construction to perform the pile sinking construction recording; the pile is received and sent; and the inspection, the lifting, the carrying and the stacking are performed. Compared with the hammering, the static pile loading has such advantages as no noise, no vibration, no pollution and safety.
Description
Technical field
The present invention relates to a kind of construction method of concrete pile, specifically relate to a kind of precast reinforced concrete pile static-pressure construction method.
Background technology
The coastal area of China is the region that flourishing city is comparatively concentrated, the enormous amount of construction work.And there is identical feature in the geological conditions major part of coastal area, i.e. the content of underground water comparatively horn of plenty, have or even silt soil strata.This feature causes very large difficulty to dealing with foundation, and as adopted in situ concrete pile, the concrete of pile body is subject to the erosion of water or mud very easily to produce undergauge or broken pile, has a strong impact on bearing capacity of pile foundation.Therefore often adopt precast reinforced concrete pile, existing construction of prefabricated piles adopts hammering method often, and it is large that the method exists vibrations, and noise is large, and uneasy congruent defect of constructing.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of precast reinforced concrete pile static-pressure construction method.
The technology used in the present invention solution is:
A kind of precast reinforced concrete pile static-pressure construction method, comprises the following steps:
(1) prepare before construction;
(2) pile-forming machine perching, checks piling machinery equipment, crane tool, pressure meter;
(3) lift by crane preformed pile, start door frame support cylinder, make that door frame is micro-inclines 15 degree;
(4) steady stake, after pile top inserts stake position, slightly starts pile press oil cylinder, when stake is buried to 50 centimetres, again corrects the verticality of stake and the level of platform, and then start pile press oil cylinder, and stake pressure slowly, speed of application controls within 2 ms/min; When pile driving pressure has reached twice design load or stake end has reached bearing stratum, voltage stabilizing should be carried out at any time;
(5) piling, sends special messenger or opens self recording apparatus, carrying out piling construction record during construction;
(6) pile extension, pile follower;
(7) inspect for acceptance, lift by crane, move, stack.
In preferred steps (1), before construction, preparation specifically comprises: guarantee that place is unobstructed smooth, surveying setting-out, and the safe distance controlling skirt piles and Adjacent Buildings should be greater than more than 4 meters, uses road roller compacting within the scope of outer 5 meters of the place skirt piles axis in piling region.
Preferably, preformed pile should reach 70% of design strength and can lift by crane, and intensity reaches 100% and can transport; Horizontal handling can adopt 2 liftings, suspension centre apart from stake hold 0.207 long; Or adopting some lifting, suspension centre holds 0.29 preformed pile long apart from stake.
Preferably, control the arrisdefect degree of depth and be no more than 10 millimeters, the defect area of partial cells and arrisdefect is no more than 0.5% of whole stake surface area, and the shrinkage crack degree of depth of concrete is not more than 20 millimeters, and width is not more than 0.15 millimeter, and transverse crack length is no more than 1/2 of the length of side.
Preferably, the stacking number of plies of precast static pressure pile is less than or equal to 4 layers, stack must 2 padded, level up, pad, pad point aligns, and is that 0.21 preformed pile is long.
Preferably, the weight of press is not less than 1.2 times of bearing capacity of single pile; Static pressed pile stake end enters bearing stratum, keeps voltage stabilizing 1-2 minute.
Preferably, pile sinking adopts first deeply rear shallow, certainly middle to both sides symmetry advance, or centre is carried out to surrounding certainly; The perpendicularity deviation that stake is inserted when locating in soil is no more than 0.5%; In piling process, be no more than 2 hours idle hours halfway.
Advantageous Effects of the present invention is:
Compared with hammering, silent piling of the present invention has noiselessness, the advantage such as shockproof, pollution-free, safe, and avoid the erosion to the joint portion of pile body or pile body and carrier of water or mud, effectively improve the quality of pile body and stake end joint portion, improve pile body friction, improve work efficiency and bearing capacity.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is illustrated further:
A kind of precast reinforced concrete pile static-pressure construction method, comprises the following steps:
(1) prepare before construction, specifically comprise: guarantee that place is unobstructed smooth, surveying setting-out, the safe distance controlling skirt piles and Adjacent Buildings should be greater than more than 4 meters, uses road roller compacting within the scope of outer 5 meters of the place skirt piles axis in piling region.
(2) pile-forming machine perching, checks piling machinery equipment, crane tool, pressure meter.
(3) lift by crane preformed pile, start door frame support cylinder, make that door frame is micro-inclines 15 degree.
(4) steady stake, after pile top inserts stake position, slightly starts pile press oil cylinder, when stake is buried to 50 centimetres, again corrects the verticality of stake and the level of platform, and then start pile press oil cylinder, and stake pressure slowly, speed of application controls within 2 ms/min; When pile driving pressure has reached twice design load or stake end has reached bearing stratum, voltage stabilizing should be carried out at any time.
(5) piling, sends special messenger or opens self recording apparatus, carrying out piling construction record during construction.
(6) pile extension, pile follower.
(7) inspect for acceptance, lift by crane, move, stack.Preformed pile should reach 70% of design strength and can lift by crane, and intensity reaches 100% and can transport; Horizontal handling can adopt 2 liftings, suspension centre apart from stake hold 0.207 long; Or adopting some lifting, suspension centre holds 0.29 preformed pile long apart from stake.
Further, control the arrisdefect degree of depth and be no more than 10 millimeters, the defect area of partial cells and arrisdefect is no more than 0.5% of whole stake surface area, and the shrinkage crack degree of depth of concrete is not more than 20 millimeters, width is not more than 0.15 millimeter, and transverse crack length is no more than 1/2 of the length of side.
Further, the stacking number of plies of precast static pressure pile is less than or equal to 4 layers, stack must 2 padded, level up, pad, pad point aligns, and is that 0.21 preformed pile is long.
Further, the weight of press is not less than 1.2 times of bearing capacity of single pile; Static pressed pile stake end enters bearing stratum, keeps voltage stabilizing 1-2 minute.
Further, pile sinking adopts first deeply rear shallow, certainly middle to both sides symmetry advance, or centre is carried out to surrounding certainly; The perpendicularity deviation that stake is inserted when locating in soil is no more than 0.5%; In piling process, be no more than 2 hours idle hours halfway.
The relevant technologies content do not addressed in aforesaid way is taked or uses for reference prior art to realize.
It should be noted that, under the instruction of this manual, any equivalents done by those skilled in the art, or obvious variant, all should within protection scope of the present invention.
Claims (7)
1. a precast reinforced concrete pile static-pressure construction method, is characterized in that comprising the following steps:
(1) prepare before construction;
(2) pile-forming machine perching, checks piling machinery equipment, crane tool, pressure meter;
(3) lift by crane preformed pile, start door frame support cylinder, make that door frame is micro-inclines 15 degree;
(4) steady stake, after pile top inserts stake position, slightly starts pile press oil cylinder, when stake is buried to 50 centimetres, again corrects the verticality of stake and the level of platform, and then start pile press oil cylinder, and stake pressure slowly, speed of application controls within 2 ms/min; When pile driving pressure has reached twice design load or stake end has reached bearing stratum, voltage stabilizing should be carried out at any time;
(5) piling, sends special messenger or opens self recording apparatus, carrying out piling construction record during construction;
(6) pile extension, pile follower;
(7) inspect for acceptance, lift by crane, move, stack.
2. a kind of precast reinforced concrete pile static-pressure construction method according to claim 1, it is characterized in that, in step (1), before construction, preparation specifically comprises: guarantee that place is unobstructed smooth, surveying setting-out, the safe distance controlling skirt piles and Adjacent Buildings should be greater than more than 4 meters, uses road roller compacting within the scope of outer 5 meters of the place skirt piles axis in piling region.
3. a kind of precast reinforced concrete pile static-pressure construction method according to claim 1, is characterized in that: preformed pile should reach 70% of design strength and can lift by crane, and intensity reaches 100% and can transport; Horizontal handling can adopt 2 liftings, suspension centre apart from stake hold 0.207 long; Or adopting some lifting, suspension centre holds 0.29 preformed pile long apart from stake.
4. a kind of precast reinforced concrete pile static-pressure construction method according to claim 1, it is characterized in that: control the arrisdefect degree of depth and be no more than 10 millimeters, the defect area of partial cells and arrisdefect is no more than 0.5% of whole stake surface area, the shrinkage crack degree of depth of concrete is not more than 20 millimeters, width is not more than 0.15 millimeter, and transverse crack length is no more than 1/2 of the length of side.
5. a kind of precast reinforced concrete pile static-pressure construction method according to claim 1, is characterized in that: the stacking number of plies of precast static pressure pile is less than or equal to 4 layers, stack must 2 padded, level up, pad, pad point aligns, and is that 0.21 preformed pile is long.
6. a kind of precast reinforced concrete pile static-pressure construction method according to claim 1, is characterized in that: the weight of press is not less than 1.2 times of bearing capacity of single pile; Static pressed pile stake end enters bearing stratum, keeps voltage stabilizing 1-2 minute.
7. a kind of precast reinforced concrete pile static-pressure construction method according to claim 1, is characterized in that: pile sinking adopts first deeply rear shallow, certainly middle to both sides symmetry advance, or centre is carried out to surrounding certainly; The perpendicularity deviation that stake is inserted when locating in soil is no more than 0.5%; In piling process, be no more than 2 hours idle hours halfway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681962.3A CN104711984A (en) | 2013-12-12 | 2013-12-12 | Static pressure construction method of prefabricated reinforced concrete pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681962.3A CN104711984A (en) | 2013-12-12 | 2013-12-12 | Static pressure construction method of prefabricated reinforced concrete pile |
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| CN104711984A true CN104711984A (en) | 2015-06-17 |
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| CN201310681962.3A Pending CN104711984A (en) | 2013-12-12 | 2013-12-12 | Static pressure construction method of prefabricated reinforced concrete pile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN109208600A (en) * | 2018-08-21 | 2019-01-15 | 江苏兴厦建设工程集团有限公司 | A kind of construction of Static Pressure Pile method |
| CN115262550A (en) * | 2022-09-07 | 2022-11-01 | 邓亚光 | Multifunctional pressure-stabilizing sounding in-situ testing static-pressure pile machine |
-
2013
- 2013-12-12 CN CN201310681962.3A patent/CN104711984A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN109208600A (en) * | 2018-08-21 | 2019-01-15 | 江苏兴厦建设工程集团有限公司 | A kind of construction of Static Pressure Pile method |
| CN115262550A (en) * | 2022-09-07 | 2022-11-01 | 邓亚光 | Multifunctional pressure-stabilizing sounding in-situ testing static-pressure pile machine |
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Application publication date: 20150617 |