CN101634145B - Anti-slide pile with vertical prestressed anchor cables - Google Patents
Anti-slide pile with vertical prestressed anchor cables Download PDFInfo
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- CN101634145B CN101634145B CN2009100601515A CN200910060151A CN101634145B CN 101634145 B CN101634145 B CN 101634145B CN 2009100601515 A CN2009100601515 A CN 2009100601515A CN 200910060151 A CN200910060151 A CN 200910060151A CN 101634145 B CN101634145 B CN 101634145B
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Abstract
The invention discloses an anti-slide pile with vertical prestressed anchor cables, aiming at effectively strengthening the resistance to bending of the anti-slide pile, reducing the steel consumption and increasing the construction efficiency. The technical scheme is as follows: distribution bars (11) are arranged in a pile body (10). The anti-slide pile is characterized in that the pile body (10) comprises a bottom section (10a) and a main section (10b), which are formed through placement of concrete twice; anchor cables (20) are horizontally embedded at intervals inside the tension side of pile body (10); an anchoring section (20a) on the lower part of the anchor cable (20) is connected with the bottom section (10a) of the pile body (10) by anchoring; after vertical prestress is exerted on the pile body (10), the upper end of the anchor cable (20) is connected with the pile body (10) at the top of the pile body (10) by an anchor device. The anti-slide pile is mainly applied to landslide control engineering.
Description
Technical field
The present invention relates to be applied to the antislide pile of landslide control engineering, particularly a kind of antislide pile that pile body is applied vertical prestressing by anchor cable.
Background technology
Landslide control is that investment is huge, technical sophistication, construction are dangerous and arduous combats a natural disaster engineering.China is a country that landslide disaster is quite serious, for many years, for guaranteeing the safety of people's lives and properties, ensures carrying out smoothly of economic construction, and country has expended great amount of manpower and material resources and financial resources in preventing land slide work.The 1950's, China is many to administer the landslide with retaining wall, and no matter this retaining structure on theoretical and job practices, all is both unreasonable also uneconomical, can only administer very small-scale landslide.The later stage sixties 20th century, bring into use antislide pile to administer the landslide, because antislide pile has advantages such as littler than retaining wall excavation face, that the bricklaying volume is little, speed of application is fast, apply very soon, so far still in extensive use in the whole nation.Antislide pile has timber, steel pipe pile, reinforced concrete pile etc. by pile body material branch, and wherein the utilization of reinforced concrete pile is the most extensive.Reinforced concrete pile is to be arranged circumferentially distribution bar in pile body, along the pile body thickness direction many row's tensile reinforcements is set at interval in tension one side.For guaranteeing the bending resistance of antislide pile, tension master's muscle diameter is big, consumption is many, and steel consumption is big, is unfavorable for reducing the cost of landslide control engineering.In addition, because cloth muscle complexity in the pile body, welding, the colligation workload is big, also has the low deficiency of efficiency of construction.
Summary of the invention
Technical problem to be solved by this invention provides a kind of anti-slide pile with vertical prestressed anchor cables, can strengthen the bending resistance of antislide pile effectively, reduces steel consumption, and improves efficiency of construction.
The technical solution adopted for the present invention to solve the technical problems is: anti-slide pile with vertical prestressed anchor cables of the present invention, be provided with distribution bar in the pile body, it is characterized in that: described pile body is made of end section, the principal piece that twice placing of concrete forms, and the lateral separation is embedded with anchor cable in the pile body tension side; An anchor cable bottom anchoring section and a stake bottom section anchor connection, after pile body is applied vertical prestressing, the anchor cable upper end by anchor device in pile body top and its anchor connection.
The invention has the beneficial effects as follows, replace original tensile reinforcement, pile body is applied vertical prestressing, strengthened the bending resistance of antislide pile effectively by anchor cable with anchor cable; Compare with the conventional steel rib concrete pile, steel consumption reduces significantly, thereby helps reducing the cost of landslide control engineering; Anchor cable is easy for installation, reduces welding, the colligation workload of site operation in a large number, therefore can improve the efficiency of construction and the construction quality of antislide pile effectively.
Description of drawings
This manual comprises following three width of cloth accompanying drawings:
Fig. 1 is the structural representation of anti-slide pile with vertical prestressed anchor cables of the present invention;
Fig. 2 is the sectional view along A-A line among Fig. 1;
Fig. 3 is the sectional view along B-B line among Fig. 1.
Component shown in the figure, toponym and pairing mark: pile body 10, end section 10a, principal piece 10b, distribution bar 11, stirrup 12, spacing horizontal bar 13, connection lengthwise rib 14, anchor cable 20, anchoring section 20a, tensioner ring 21, billet 22, ground tackle 23.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
See figures.1.and.2, anti-slide pile with vertical prestressed anchor cables of the present invention is provided with distribution bar 11 in the pile body 10.Described pile body 10 is made of end section 10a, the principal piece 10b that twice placing of concrete forms, and the lateral separation is embedded with anchor cable 20 in pile body 10 tension sides.Anchor cable 20 bottom anchoring section 20a and the section 10a anchor connection of 10 end of pile body, after pile body 10 is applied vertical prestressing, anchor cable 20 upper ends by anchor device in pile body 10 tops and its anchor connection.Replace original tensile reinforcement with anchor cable 20, pile body 10 is applied vertical prestressing, strengthened the bending resistance of antislide pile effectively, and steel consumption reduces significantly, thereby help reducing the cost of landslide control engineering by anchor cable.Because it is convenient that anchor cable 20 is installed more than the laying of tensile reinforcement, can reduce welding, the colligation workload of site operation in a large number, therefore can improve the efficiency of construction and the construction quality of antislide pile effectively.
See figures.1.and.2, described anchor cable 20 adopts is 4～8 strands steel strand, and anchoring section 20a steel strand are exposed, and vertically are arranged at intervals with tensioner ring 21, and the through hole of laying at interval on the tensioner ring 21 makes each strand steel strand keep a determining deviation.With reference to Fig. 3, except that anchoring section 20a, anchor cable 20 top principal pieces are the free section of non-bending steel cable anchor cable, and it can freely stretch when applying prestressing force.With reference to Fig. 1, described anchor device is made up of ground tackle 23 and billet 22, and billet 22 has the through hole that passes through for anchor cable 20 upper ends.
With reference to Fig. 2, vertical interval is laid with spacing horizontal bar 13 in described pile body 10 end section 10a, fixedly connected with the stirrup 12 that is used for fixing distribution bar 11 in the two ends of spacing horizontal bar 13, before end section 10a pouring with anchoring section 20a positioning and fixing between tension side stirrup 12 and spacing horizontal bar 13.With reference to Fig. 1, be the connection between the end section 10a, the principal piece 10b that strengthen twice placing of concrete formation, be laid with pre-buried connection lengthwise rib 14 at interval on the end section 10a of described pile body 10 and the bonding surface of principal piece 10b, the two ends of connection lengthwise rib 14 extend into respectively in end section 10a, the principal piece 10b.
Job practices below in conjunction with specific embodiment explanation anti-slide pile with vertical prestressed anchor cables of the present invention:
1. elder generation's anchor cable anti-slide pile construction method routinely excavates a stake hole.
2. a spot of distribution bar 11 is in place all around fast by designing requirement, and carries out colligation with stirrup 12 and fix.
3. the anchor cable 20 that will make in advance manually lifts to be filled in the hole, notice that the anchor cable afterbody ties up down putting down gently slowly with rope, after the exposed anchoring section 20a in its underpart is accurately in place, with spacing horizontal bar 13 fixedly colligation be fixed on the stirrup 12, each anchoring section 20a is fixed.
4. water pile body 10 lower bottom section 10a concrete, end section 10a length is 3～4m, adds an amount of early strength admixture in the concrete.Watering to from the connection lengthwise rib 14 that begins during about 3m at the bottom of the stake on cross section every the φ 20mm of the pre-buried long 1m of 50cm, continue to water again the thick concrete of 50cm, keep this concrete surface crude as far as possible, allow connection lengthwise rib 14 expose 50cm, when treating next time pouring principal piece 10b to strengthen twice binding between the concrete.
5. treat after 3 days each anchor cable 20 usefulness stretch-draw jack are stretching, and continuous pouring principal piece 10b C30 concrete incessantly immediately, until following stake top down about 0.2m, the billet 22 that a 280mm * 280mm * 25mm is installed at every anchor cable 20 places and pile concrete pouring are together.
When treating that 6. pile concrete reaches the 7 day length of time, anchor cable 20 applied 50% design pulling force; When treating that pile concrete reaches the 14 day length of time, anchor cable 20 applied 70% design pulling force; During the 28 day length of time, anchor cable 20 is applied 100% design pulling force, and consider the super stretch-draw 5% of loss of prestress.
7. at last with ground tackle 23 outer steel strand excisions, keep the 12cm protruded length, and shut with the C30 concrete of thick 20cm.
Claims (5)
1. anti-slide pile with vertical prestressed anchor cables, be provided with distribution bar (11) in the pile body (10), it is characterized in that: the end section (10a) that described pile body (10) is formed by twice placing of concrete, principal piece (10b) constitute, and the lateral separation is embedded with anchor cable (20) in pile body (10) tension side; Anchor cable (20) bottom anchoring section (20a) and pile body (10) end section (10a) anchor connection, after pile body (10) is applied vertical prestressing, anchor cable (20) upper end by anchor device in pile body (10) top and its anchor connection.
2. anti-slide pile with vertical prestressed anchor cables according to claim 1, it is characterized in that: described anchor cable (20) adopts is 4～8 strands steel strand, anchoring section (20a) steel strand are exposed, and vertically being arranged at intervals with tensioner ring (21), tensioner ring (21) is gone up the through hole of laying at interval makes each strand steel strand keep a determining deviation.
3. as anti-slide pile with vertical prestressed anchor cables as described in the claim 2, it is characterized in that: the vertical spacing horizontal bar (13) that is laid with at interval in described pile body (10) end section (10a), fixedly connected with the stirrup that is used for fixing distribution bar (11) (12) in the two ends of spacing horizontal bar (13), before end section (10a) pouring with anchoring section (20a) positioning and fixing between tension side stirrup (12) and spacing horizontal bar (13).
4. anti-slide pile with vertical prestressed anchor cables according to claim 1, it is characterized in that: described anchor device is made up of ground tackle (23) and billet (22), and billet (22) has the through hole that passes through for anchor cable (20) upper end.
5. anti-slide pile with vertical prestressed anchor cables according to claim 1, it is characterized in that: be laid with pre-buried connection lengthwise rib (14) at interval on the end section (10a) of described pile body (10) and the bonding surface of principal piece (10b), the two ends of connection lengthwise rib (14) extend into respectively in end section (10a), the principal piece (10b).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100601515A CN101634145B (en) | 2009-07-29 | 2009-07-29 | Anti-slide pile with vertical prestressed anchor cables |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100601515A CN101634145B (en) | 2009-07-29 | 2009-07-29 | Anti-slide pile with vertical prestressed anchor cables |
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| CN101634145A CN101634145A (en) | 2010-01-27 |
| CN101634145B true CN101634145B (en) | 2011-12-28 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110805026B (en) * | 2019-11-20 | 2021-02-19 | 福建省交通规划设计院有限公司 | Portal frame type anti-slide pile with vertical prestressed anchor cables arranged in inner pile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070867A (en) * | 1974-12-13 | 1978-01-31 | Cassidy Paul G | Negative friction pile and isolating casing |
| EP0574057A1 (en) * | 1992-05-14 | 1993-12-15 | Colijn Beheer B.V. | Method for the vibration-free construction of a soil displacing foundation pile |
| JP2000303457A (en) * | 1999-04-19 | 2000-10-31 | Sekisui House Ltd | Friction pile |
| CN201016169Y (en) * | 2007-02-13 | 2008-02-06 | 陕西黄延高速公路有限责任公司 | Eccentric prestressed anchor rope friction pile |
| CN101230577A (en) * | 2007-12-28 | 2008-07-30 | 中国科学院水利部成都山地灾害与环境研究所 | Construction method for vertical prestressed anchor rope friction pile slope-sliding prevention and treatment |
| CN201459715U (en) * | 2009-07-29 | 2010-05-12 | 中铁二院工程集团有限责任公司 | Anti-slide pile for vertical prestressing anchor rope |
-
2009
- 2009-07-29 CN CN2009100601515A patent/CN101634145B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070867A (en) * | 1974-12-13 | 1978-01-31 | Cassidy Paul G | Negative friction pile and isolating casing |
| EP0574057A1 (en) * | 1992-05-14 | 1993-12-15 | Colijn Beheer B.V. | Method for the vibration-free construction of a soil displacing foundation pile |
| JP2000303457A (en) * | 1999-04-19 | 2000-10-31 | Sekisui House Ltd | Friction pile |
| CN201016169Y (en) * | 2007-02-13 | 2008-02-06 | 陕西黄延高速公路有限责任公司 | Eccentric prestressed anchor rope friction pile |
| CN101230577A (en) * | 2007-12-28 | 2008-07-30 | 中国科学院水利部成都山地灾害与环境研究所 | Construction method for vertical prestressed anchor rope friction pile slope-sliding prevention and treatment |
| CN201459715U (en) * | 2009-07-29 | 2010-05-12 | 中铁二院工程集团有限责任公司 | Anti-slide pile for vertical prestressing anchor rope |
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| CN101634145A (en) | 2010-01-27 |
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