CN1619063A - Post stress method stake body prestressed antislid stake and construction method - Google Patents
Post stress method stake body prestressed antislid stake and construction method Download PDFInfo
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- CN1619063A CN1619063A CN 200410081456 CN200410081456A CN1619063A CN 1619063 A CN1619063 A CN 1619063A CN 200410081456 CN200410081456 CN 200410081456 CN 200410081456 A CN200410081456 A CN 200410081456A CN 1619063 A CN1619063 A CN 1619063A
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Abstract
The present invention adopts construction on ground surface, and makes post-tensional pile-body prestressed anti-slide pile. Its structure is as follows: firstly-poured concrete interior has steel reinforcement cage, cage edge interior has corrugated pipe, in the corrugated pipe interior a stranded wire is placed, two ends of said stranded wire are extended from said corrugated pipe, lower end of said stranded wire is connected with anchorage device of anchored part in the pile bottom, its upper end is connected with anchorage device of pile top, and the upper portion of anchorage device of pile type has secondary poured concrete. Said invention also provides its construction method.
Description
One, technical field
The present invention relates to prestressed reinforced concrete construction and job practices.
Two, background technology
Along with the application and the development of reinforced-concrete structure, prestressing technique constantly improves and has obtained promoting rapidly.
Sliding ripple training works often uses antislide pile, and antislide pile is by stake and ground acting in conjunction on every side, and Thrust of Landslide is delivered to a kind of antiskid structure of good ground, mainly be that skid resistance is strong because it has, the stake position flexibly, advantages such as easy construction, safety.At present, China's use is at most a reinforced concrete pile.In engineering practice, because the difference of landslide type, geological conditions topography and geomorphology adopts different antislide pile patterns, its regulation effect is also different with construction costs.
The anti-slide pile structure form has at present: common antislide pile, rigid frame formula antislide pile, pre-stress anti-slide pile, hollow antislide pile etc.
At number of patent application 00132690.2, " a kind of prestressed slip-resisting pile and method thereof that is used for reinforcing side slope " patented technology is disclosed, this patented technology, be to carry out prestressed column in factory, that is to say it is pre-tensioned prestressing method antislide pile, exist precast prestressed cylinder in problems such as transportation, liftings, make troubles to construction.
Three, summary of the invention
It is simple to the purpose of this invention is to provide a kind of structure and job practices, and making full use of the required ground tackle of prestressed slip-resisting pile structure, presstressed reinforcing steel all has availablely than the product of horn of plenty, and construction equipment, execution conditions, construction technology etc. are comparative maturity all.
The present invention adopts in face of land construction, carries out post-tensioned prestressing stretch-draw and builds, and reaches easy construction, reduces cost, improves the antislide pile performance.
Structure of the present invention: the ordinary reinforced concrete that includes reinforcing cage, it has reinforcing cage in concreting for the first time, reinforcing cage has bellows by in the cage limit, be placed with steel strand in the bellows pipe, steel strand stretch out bellows for two sections, anchoring section ground tackle, upper end were connected with a top ground tackle at the bottom of the steel strand lower end was connected with, and concreting is for the second time arranged at stake ground tackle top, top.
The present invention, stake end anchoring section ground tackle is the fixed end ground tackle.
The present invention, stake top ground tackle is a stretch-draw end ground tackle.
Job practices of the present invention, its job practices comprises the steps:
A. dig a hole:,, carry out fore shaft, retaining wall protection and hand excavation according to common antislide pile mode in design attitude excavation antislide pile hole according to on-the-spot geological condition;
B. reinforcing cage is made and installed: reinforcing cage and reinforcing bar adopt common antislide pile mode that colligation is installed in the stake hole, the bellows of in reinforcing cage, vertically laying by sliding direction, at the bottom of the end distance stake certain distance is arranged under the bellows, steel wire bundle is penetrated in the bellows, the steel wire bundle lower end is at the bottom of being connected after the embossing on the anchoring section ground tackle, and steel wire bundle carried out colligation in the lump together with the antislide pile reinforcing bar, the punching jack and the prefab form of the application of force arranged at the bellows top;
C. concreting for the first time: coagulate native continuous placing pile body with ordinary Portland cement and remove stake top, bellows top ground tackle and reserve the position, build and be integral;
D. concrete curing: undertaken by the concrete curing job specfication;
E. prestressed stretch-draw: after treating antislide pile concreting intensity reaching more than 70% for the first time, anchor cable steel wire bundle upper end is connected stake top ground tackle self-locking device and punching jack, starting oil pump makes punching jack pair steel strand carry out Y stretch-draw, to be tensioned behind the design stretching force, stop oil pump work, stake top ground tackle is the steel wire bundle automatic locking, cuts off with the punching jack to be connected steel wire bundle, taking-up punching jack;
F. duct grouting, sealing off and covering anchorage: after removing the prefab form that is equipped with at the bellows top, carry out pressure grouting in the bellows pipe, the concreting second time is carried out at last bellows top.
The present invention has:
(1) the required ground tackle of prestressed slip-resisting pile structure, presstressed reinforcing steel etc. all have than the product of horn of plenty and can select, and construction equipment, execution conditions, construction technology etc. are comparative maturity all.
(2) construction technology of prestressed slip-resisting pile is fairly simple, and prestressed stretch-draw that increases and grouting etc. are in face of land construction, and condition is convenient, and the measure expense that engineering prestressing force increases is less.
(3) pile body adopts prestressing force, and intensity is higher, avoids pile body to produce cracking under the Thrust of Landslide effect.
(4) and common antislide pile of the same type Comparatively speaking, amount of reinforcement significantly reduces, section can dwindle, construction costs can be saved more than 15%.
(5) in the construction, owing to reduced the weight of reinforcing cage, reinforcing bar cage hoisting is comparatively convenient.
Four, description of drawings
Further specify the present invention with accompanying drawing below.
Accompanying drawing is a concrete component sectional structure schematic diagram of the present invention.
Among the figure: the solid section ground tackle 7-concreting first time at the bottom of the 1-concreting 2-stake for the second time top ground tackle 3-reinforcing cage 4-steel strand 5-bellows 6-stake
Five, the specific embodiment
As shown in drawings, in the concreting 7 reinforcing cage 3 is arranged for the first time, reinforcing cage 3 has bellows 5 by in the cage, be placed with steel strand 4 in the bellows 5, bellows 5 is stretched out at steel strand 4 two ends, anchoring section ground tackle 6, upper end were connected with a top ground tackle 2 at the bottom of steel strand 4 lower ends were connected with, and concreting 1 is for the second time arranged at stake ground tackle 2 tops, top.
Before making member of the present invention, according to the actual project situation in landslide,, obtain the selection of presstressed reinforcing steel quantity to antislide pile condition of work and the stressed Force Calculation of carrying out of work, and the quantity of plain bars, structural form, and concrete label.
The present invention makes job practices: according to on-the-spot geological condition, in design attitude excavation antislide pile hole, carry out fore shaft according to conventional common antislide pile mode, retaining wall protection and population excavation, when digging projected depth, reinforcing cage also adopts common antislide pile mode to install in the stake hole, in reinforcing cage, vertically lay bellows by sliding direction, at the bottom of the end distance stake certain distance is arranged under the bellows, the anchor cable steel wire bundle is penetrated in the bellows, the steel wire bundle lower end is at the bottom of being connected after the embossing on the anchoring section ground tackle, and steel wire bundle carried out colligation in the lump together with the antislide pile reinforcing bar, after the bellows top is equipped with the punching jack and prefab form of the application of force, concreting for the first time, remove ground tackle position, stake top, bellows top with portland cement concrete continuous placing pile body, build simultaneously and be integral, carry out maintenance by the concrete curing job specfication, after treating that the concreting pile strength reaches 75% for the first time, anchor cable steel wire bundle upper end is connected stake top ground tackle self-locking device and punching jack, starting oil pump makes punching jack pair steel wire bundle carry out Y stretch-draw, to be tensioned behind the design stretching force, stop oil pump work, stake top ground tackle is with the steel wire bundle automatic locking, cut off the punching jack and connect steel wire bundle, take out the punching jack, after removing the prefab form that is equipped with at the bellows top, in the bellows pipe, carry out the concreting for the second time of pressure grouting and bellows top.
Claims (4)
1. post stress method stake body prestressed antislid stake, include the ordinary reinforced concrete of reinforcing cage (3), it is characterized in that in the concreting (7) reinforcing cage (3) being arranged for the first time, reinforcing cage (3) has bellows (5) by in the cage limit, be placed with steel strand (4) in bellows (5) pipe, steel strand stretch out bellows (5) for (4) two sections, and anchoring section ground tackle (6), upper end were connected with a top ground tackle (2) at the bottom of steel strand (4) lower end was connected with, and concreting (1) is for the second time arranged at stake top ground tackle (2) top.
2. a kind of post stress method stake body prestressed antislid stake according to claim 1, anchoring section ground tackle (6) is the fixed end ground tackle at the bottom of it is characterized in that.
3. a kind of post stress method stake body prestressed antislid stake according to claim 1 is characterized in that a top ground tackle is a stretch-draw end ground tackle.
4. post stretching stake power prestressed slip-resisting pile job practices is characterized in that job practices comprises following steps:
A. dig a hole:,, carry out fore shaft, retaining wall protection and hand excavation according to common antislide pile mode in design attitude excavation antislide pile hole according to on-the-spot geological condition;
B. reinforcing cage is made and installed: reinforcing cage and reinforcing bar adopt common antislide pile mode that colligation is installed in the stake hole, the bellows of in reinforcing cage, vertically laying by sliding direction, at the bottom of the end distance stake certain distance is arranged under the bellows, steel wire bundle is penetrated in the bellows, the steel wire bundle lower end is at the bottom of being connected after the embossing on the anchoring section ground tackle, and steel wire bundle carried out colligation in the lump together with the antislide pile reinforcing bar, the punching jack and the prefab form of the application of force arranged at the bellows top;
C. concreting for the first time: coagulate native continuous placing pile body with ordinary Portland cement and remove stake top, bellows top ground tackle and reserve the position, build and be integral;
D. concrete curing: undertaken by the concrete curing job specfication;
E. prestressed stretch-draw: after treating antislide pile concreting intensity reaching more than 70% for the first time, anchor cable steel strand upper end is connected stake top ground tackle self-locking device and punching jack, starting oil pump makes punching jack pair steel wire bundle carry out Y stretch-draw, to be tensioned behind the design stretching force, stop oil pump work, stake top ground tackle is the steel wire bundle automatic locking, cuts off with the punching jack to be connected steel wire bundle, taking-up punching jack;
F. duct grouting, sealing off and covering anchorage: after removing the prefab form that is equipped with at the bellows top, carry out pressure grouting in the bellows pipe, the concreting second time is carried out at last bellows top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100814561A CN1298938C (en) | 2004-12-08 | 2004-12-08 | Post stress method stake body prestressed antislid stake and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100814561A CN1298938C (en) | 2004-12-08 | 2004-12-08 | Post stress method stake body prestressed antislid stake and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1619063A true CN1619063A (en) | 2005-05-25 |
| CN1298938C CN1298938C (en) | 2007-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100814561A Expired - Fee Related CN1298938C (en) | 2004-12-08 | 2004-12-08 | Post stress method stake body prestressed antislid stake and construction method |
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| CN (1) | CN1298938C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550695A (en) * | 2009-02-10 | 2009-10-07 | 叶长青 | Construction method of reinforcing broken stump by using prestress steel twist-beam replacement grouting method |
| CN101168975B (en) * | 2007-08-30 | 2010-11-03 | 武汉舒居科技有限公司 | Method for manufacturing inner stretch-draw prestressing force ultra-light structure unit |
| WO2011131062A1 (en) * | 2010-04-22 | 2011-10-27 | 斯君哲 | Pouring pile structure without tension |
| CN102345292A (en) * | 2011-07-21 | 2012-02-08 | 从卫民 | Composite prestressed uplift pile with expansion heads |
| CN103031841A (en) * | 2012-12-31 | 2013-04-10 | 中国建筑西南勘察设计研究院有限公司 | Post-tensioned prestressing rectangular hollow foundation pit support pile |
| CN103616265A (en) * | 2013-10-28 | 2014-03-05 | 湖南省交通科学研究院 | Pipeline detector calibrating model making method and calibrating model |
| CN108532615A (en) * | 2018-04-23 | 2018-09-14 | 武汉工程大学 | Cable adjustable power anchor draws friction pile and its construction method |
| CN109898501A (en) * | 2019-04-17 | 2019-06-18 | 中铁上海设计院集团有限公司 | Pretensioned prestressing stake applies method under a kind of low-headroom condition |
| CN109898502A (en) * | 2019-04-17 | 2019-06-18 | 中铁上海设计院集团有限公司 | Post-stressed stake applies method under a kind of low-headroom condition |
| CN109944254A (en) * | 2019-04-22 | 2019-06-28 | 重庆大学 | A kind of cast-type prestressed concrete pit supporting construction and its construction method |
| CN113863291A (en) * | 2021-10-21 | 2021-12-31 | 中建三局集团有限公司 | Novel construction method of unbonded prestressed poured uplift pile |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100535259C (en) * | 2007-04-12 | 2009-09-02 | 北京建材地质工程公司 | Partial adhered prestressed pile against drawing and floating and its construction |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2067633B (en) * | 1980-01-14 | 1983-07-27 | Lee P | Concrete foundation pile |
| JPH05247933A (en) * | 1991-05-10 | 1993-09-24 | Taisei Corp | Construction method of cast-in-place concrete pile |
| CN1120917C (en) * | 2000-11-17 | 2003-09-10 | 中国科学院地质研究所 | Prestressed slip-resisting pile for reinforcing side slope and its method |
-
2004
- 2004-12-08 CN CNB2004100814561A patent/CN1298938C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168975B (en) * | 2007-08-30 | 2010-11-03 | 武汉舒居科技有限公司 | Method for manufacturing inner stretch-draw prestressing force ultra-light structure unit |
| CN101550695A (en) * | 2009-02-10 | 2009-10-07 | 叶长青 | Construction method of reinforcing broken stump by using prestress steel twist-beam replacement grouting method |
| CN101550695B (en) * | 2009-02-10 | 2013-11-13 | 叶长青 | Construction method of reinforcing broken stump by using prestress steel twist-beam replacement grouting method |
| WO2011131062A1 (en) * | 2010-04-22 | 2011-10-27 | 斯君哲 | Pouring pile structure without tension |
| CN102345292A (en) * | 2011-07-21 | 2012-02-08 | 从卫民 | Composite prestressed uplift pile with expansion heads |
| CN103031841A (en) * | 2012-12-31 | 2013-04-10 | 中国建筑西南勘察设计研究院有限公司 | Post-tensioned prestressing rectangular hollow foundation pit support pile |
| CN103616265A (en) * | 2013-10-28 | 2014-03-05 | 湖南省交通科学研究院 | Pipeline detector calibrating model making method and calibrating model |
| CN103616265B (en) * | 2013-10-28 | 2016-06-08 | 湖南省交通科学研究院 | Manufacture the method for pipeline detector peg model, peg model |
| CN108532615A (en) * | 2018-04-23 | 2018-09-14 | 武汉工程大学 | Cable adjustable power anchor draws friction pile and its construction method |
| CN109898501A (en) * | 2019-04-17 | 2019-06-18 | 中铁上海设计院集团有限公司 | Pretensioned prestressing stake applies method under a kind of low-headroom condition |
| CN109898502A (en) * | 2019-04-17 | 2019-06-18 | 中铁上海设计院集团有限公司 | Post-stressed stake applies method under a kind of low-headroom condition |
| CN109944254A (en) * | 2019-04-22 | 2019-06-28 | 重庆大学 | A kind of cast-type prestressed concrete pit supporting construction and its construction method |
| CN113863291A (en) * | 2021-10-21 | 2021-12-31 | 中建三局集团有限公司 | Novel construction method of unbonded prestressed poured uplift pile |
| CN113863291B (en) * | 2021-10-21 | 2023-03-03 | 中建三局集团有限公司 | Construction method of unbonded prestressed poured uplift pile |
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|---|---|
| CN1298938C (en) | 2007-02-07 |
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