CN101761085B - Built-in anchor head embedded-type anchoring pile - Google Patents
Built-in anchor head embedded-type anchoring pile Download PDFInfo
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- CN101761085B CN101761085B CN2009102449283A CN200910244928A CN101761085B CN 101761085 B CN101761085 B CN 101761085B CN 2009102449283 A CN2009102449283 A CN 2009102449283A CN 200910244928 A CN200910244928 A CN 200910244928A CN 101761085 B CN101761085 B CN 101761085B
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Abstract
The invention relates to an inbuilt anchor head embedded-type anchoring pile comprising a hollow anti-slide pile, an anchor head, an anchor cable and a cover plate, wherein the hollow anti-slide pile is a reinforced concrete pile of which the section is a rectangle, the upper part is a hollow body, and the lower part is a solid body; the anchor head is fixed on the inner side of the hollow rear wall of the hollow body, an anchor cable connected with the anchor head passes through the hollow rear wall to be fixed in a stable stratum on the rear side of the hollow anti-slide pile, the anchorage device of the anchor head locks one end of the anchor cable passing through the hollow rear wall on the inner side of the hollow rear wall, a steel base plate is arranged between the anchorage device and the hollow rear wall, and the outer sides of the anchorage device and the steel base plate are sealed by concrete; the cover plate is a reinforced concrete rectangular plate and is covered on the upper mouth of the hollow body of the hollow anti-slide pile to seal the top of the pile. The invention relates to the arrangement method of the inbuilt anchor head embedded-type anchoring pile, comprising: digging a pile hole, pouring concrete, drilling anchor holes, installing the anchor cable and the anchor head, and sealing the pile top. The anchoring pile of the invention has wide application prospect for treating large soil or rock-soil landslide treatment engineering.
Description
Technical field
The present invention relates to the foundation pile of Foundation Design, the anchor that particularly relates to as the anti-sliding support structure of reinforcing major landslip draws antislide pile.
Background technology
Antislide pile be with the foundation pile of Foundation Design as the retaining structure of reinforcing the landslide, by passing the pile that sliding mass embeds the following good ground of slide plane, the sliding force of a retaining sliding mass plays the reinforcement effect on stable landslide.
Fig. 1 shows and existingly directly inserts single pile anti-sliding support structure in the landslide by antislide pile.As shown in Figure 1, antislide pile 5 is the pile of cylindrical or square column type, passes sliding mass 3 and is mounted in the good ground 1 of slide plane below 2, and the sliding force of a retaining sliding mass 3 plays the effect on stable landslide.
Generally speaking, antislide pile 5 enters the building-in depth in the good ground 1, for pile designs 1/3rd of length, for pile designs 1/4th of length, designs 1/2nd of length for pile in the sliding bed of soil property in the hard rock stratum in soft rock stratum.
Antislide pile shown in Figure 1 is resisted the sliding force of sliding mass fully by the resistance to bending of pile itself, it meets with stresses limited with bending resistance, is difficult to play the stable effect in effective control landslide under the big situation of sliding mass distortion.And, adopt the required building-in depth of anti-slide pile design also bigger separately.
Fig. 2 shows the anchor anchor anti-sliding support structure that is constituted jointly by antislide pile and anchor cable.As shown in Figure 2, antislide pile 5 is the square column type pile, passes sliding mass 3 and embeds in the slide plane 2 following good grounds 1, and the front side of antislide pile 5 is provided with anchor head 6, after the anchor cable 7 of connection anchor head 6 crosses antislide pile 5, is fixed in the good ground 1 of antislide pile 5 rear sides.Antislide pile 5 embeds 1 on relatively stable stratum by means of the bottom and blocks the understable or potential sliding mass of portion 3, prestressing force by the transmission of front side, 7 pairs of antislide pile 5 top of anchor cable, reach effects such as reducing antislide pile maximal bending moment, minimizing antislide pile building-in depth, control stake top horizontal distortion, and then play the effect on stable landslide better.
But, anchor anchor anti-sliding support structure shown in Figure 2, anchor head 6 is arranged on the front side of antislide pile 5, for arranging anchor head 6 and anchor cable 7, need carry out the part excavation to soil before the stake that the preceding skid resistance of certain stake can be provided, this can influence to some extent to the resistance to overturning of landslide control engineering.
Simultaneously, be to reduce the excavation of soil before the stake, anchor head 6 can only centralized arrangement near anchor anchor top, influenced the distribution of the crooked internal force of anchor anchor, also make anchor cable quantity be subjected to bigger restriction, reduced the anti-slide performance of anchor anchor.And anchor head 6 is positioned near the stake top, has increased the anchor cable total length, and long-term loss of prestress is relatively large, because boring is longer relatively, has also increased the difficulty of drilling construction.
Summary of the invention
The anchor head that exists at the anchor anchor of above-mentioned prior art is arranged and is subjected to soil before soil restriction before the stake, the excavation stake to influence the problems such as anti-slide performance of anchor anchor again, the present invention releases the built-in anchor head anchor anchor that is constituted jointly by hollow antislide pile in top and anchor cable, on the hollow cavity rear wall that anchor head is arranged on antislide pile top, and be fixed in the good ground of antislide pile rear side after anchor cable crossed the hollow cavity rear wall, thereby soil just can utilize an anchor anchor to reinforce and a stable purpose that comes down before realizing need not excavating stake.
Inbuilt anchor head embedded-type anchoring pile involved in the present invention comprises hollow antislide pile, anchor head, anchor cable and cover plate.Hollow antislide pile is that the cross section is the reinforced concrete pile of rectangle, and hollow body is formed at top, and the bottom is a solid, and the cross section of upper hollow body is a hollow rectangle.The hollow body that top forms is surrounded by hollow antetheca, hollow rear wall and hollow sidewall.
Anchor head is fixed on the inboard of hollow rear wall, and the anchor cable that connects anchor head passes in the good ground that hollow rear wall is fixed on hollow antislide pile rear side.Anchor cable one end that the ground tackle of anchor head will pass hollow rear wall is locked in the inboard of hollow rear wall, between ground tackle and the hollow rear wall billet is set, and the outside of anchor cable outer end, ground tackle and billet is encapsulated by concrete, forms anchor head.
Cover plate is a reinforced concrete rectangular plate, covers suitable for reading at hollow antislide pile hollow body, sealing stake top.Cover plate is consistent with hollow antislide pile sectional dimension.
Inbuilt anchor head embedded-type anchoring pile involved in the present invention is arranged on the landslide that needs to reinforce and locates, and is used for a sliding force of retaining sliding mass, plays the reinforcement effect on stable landslide.The step of the method to set up of related inbuilt anchor head embedded-type anchoring pile comprises: excavate stake hole, fluid concrete, drill through anchor hole, settle anchor cable and anchor head, sealing stake to push up.
(1) excavates the stake hole
Excavate the stake hole at the place, landslide that need are reinforced, so that hollow antislide pile is set; After stake hole and panelling construction are finished, the reinforcing cage of the hollow antislide pile of colligation in the stake hole, it is the frame construction of hollow rectangle that reinforcing cage forms the cross section; Closing on installation reservation steel pipe on the rear side reinforcing cage of good ground behind the slope.
(2) fluid concrete
At bottom, stake hole disposal pouring concrete, concrete pouring forms the solid of bottom to the bottom of designed hollow antislide pile upper hollow body.Before the concrete initial set, at relevant position, the solid of fluid concrete above reinforcing cage both sides lifting and fixed form, fluid concrete in reinforcing cage again forms the hollow body on top.The hollow cavity of upper hollow body is surrounded by hollow antetheca, hollow rear wall and hollow sidewall, and the cross section of hollow body is a hollow rectangle.After above-mentioned two stage fluid concrete process was finished, formation top was that hollow body, bottom are the pile body structure of the hollow antislide pile steel concrete of solid.
(3) drill through anchor hole
After treating that hollow antislide pile pile concrete cast finished 14 days, the hollow rear wall reservation steel pipe that passes hollow cavity drills through anchor hole to the good ground of hollow antislide pile rear side.The drilling rod of rig should possess in boring procedure can be by joint lengthening and the function of removing by joint, to adapt to construction plant features of limited in the hollow cavity.
(4) settle anchor cable and anchor head
After the maintenance of hollow antislide pile pile concrete is finished, anchor cable is arranged in the anchor hole, uses the mortar injection anchor hole then.After treating that mortar strength reaches designing requirement, billet is installed on the hollow rear wall inboard of hollow cavity and is carried out prestressed stretch-draw, with ground tackle the anchor cable outer end is locked on the billet again with the outer end of jack pair anchor cable.Again with anchor cable outer end, ground tackle and billet with concrete pouring and be packaged into anchor head.
(5) sealing stake top
Cover the suitable for reading of hollow body with the prefabricated reinforced concrete cover plate, closed hollow antislide pile stake top.
Inbuilt anchor head embedded-type anchoring pile of the present invention adopts top to form the antislide pile of hollow cavity, the layout of anchor head and anchor cable can be carried out in hollow cavity, the residue skid resistance of soil before not excavating the preceding soil of stake and giving full play to stake, antislide pile bottom fixed section still adopts solid pile, add the prestressing force that anchor cable transmits antislide pile top, reach effects such as reducing antislide pile maximal bending moment, minimizing antislide pile building-in depth, control anchor anchor horizontal distortion, can utilize the anchor anchor to reinforce and stable landslide well.And top forms the antislide pile of hollow cavity and has saved concrete material largely.
Description of drawings
Fig. 1 is that the antislide pile of prior art embeds the schematic diagram in the landslide.
Fig. 2 is the schematic diagram in the anchor anchor embedding landslide that is constituted jointly by antislide pile and anchor cable.
Fig. 3 is that inbuilt anchor head embedded-type anchoring pile of the present invention embeds the schematic diagram in the landslide.
Fig. 4 cuts open figure for cutting of anchor anchor among Fig. 3.
Description of symbols among the figure:
1, good ground 2, slide plane
3, sliding mass 4, domatic
5, antislide pile 6, anchor head
7, anchor cable 8, hollow antislide pile
9, hollow body 10, hollow cavity
11, cover plate 12, solid
13, hollow antetheca 14, hollow sidewall
15, hollow rear wall 16, reservation steel pipe
17, billet 18, ground tackle
L, stake cross-sectional length W, stake breadth of section.
The specific embodiment
Further specify the concrete structure and the method to set up thereof of inbuilt anchor head embedded-type anchoring pile involved in the present invention in conjunction with the accompanying drawings.Fig. 3 shows that inbuilt anchor head embedded-type anchoring pile embeds state and the basic structure thereof in the landslide, and Fig. 4 shows the cross section structure of inbuilt anchor head embedded-type anchoring pile hollow cavity.
As shown in the figure, inbuilt anchor head embedded-type anchoring pile involved in the present invention comprises hollow antislide pile 8, anchor head 6, anchor cable 7 and cover plate 11.Hollow antislide pile 8 is that a cross section is the reinforced concrete pile of rectangle, and two limits in rectangle stake cross section are respectively a cross-sectional length L and stake breadth of section W.Hollow antislide pile 8 tops are the inner hollow body 9 that forms hollow cavity 10, and the bottom is a solid 12.The cross section of upper hollow body 9 is a hollow rectangle, and hollow cavity 10 is surrounded by hollow antetheca 13, hollow sidewall 14 and hollow rear wall 15.The thickness of hollow antetheca 13 is 0.15 times of stake cross-sectional length L, and the thickness of hollow rear wall 15 is 0.2 times of stake cross-sectional length L, and the thickness of hollow sidewall is 0.15 times of stake breadth of section W.
Anchor head 6 is fixed on the inboard of hollow rear wall 15, is encapsulated and is formed by the outside of concrete with anchor cable outer end, ground tackle 18 and billet 17.The anchor cable 7 that connects anchor head 6 passes in the good ground that hollow rear wall 15 is fixed on hollow antislide pile 8 rear sides, the end that the ground tackle 18 of anchor head 6 will pass the anchor cable 7 of hollow rear wall 15 is locked in the inboard of hollow rear wall 15, and billet 17 is arranged between ground tackle 18 and the hollow rear wall 15.Billet 17 is a square, and thickness is 10mm, and the length of side of billet 17 is 300mm.
The method to set up of inbuilt anchor head embedded-type anchoring pile involved in the present invention comprises:
Excavation is provided with the stake hole of hollow antislide pile 8, the reinforcing cage of the hollow antislide pile of colligation in the stake hole then, and it is the frame construction of hollow rectangle that reinforcing cage forms the cross section, installs on the reinforcing cage of hollow rear wall and reserves steel pipe 16, the reservation pipe diameter is 130mm.
At bottom, stake hole disposal pouring concrete, form the solid 12 of bottom.Before the concrete initial set, at inboard relevant position lifting of the reinforcing cage of hollow body 9 and fixed form, fluid concrete in reinforcing cage again forms the hollow body 12 on top.The hollow cavity 10 of upper hollow body 12 is surrounded by hollow antetheca 13, hollow rear wall 15 and hollow sidewall 14, and the cross section of hollow body 9 is a hollow rectangle.
After treating that hollow antislide pile pile concrete cast finished 14 days, pass hollow rear wall reservation steel pipe 16 and drill through anchor hole to the good ground 1 of hollow antislide pile 8 rear sides.Bore diameter is 130mm.
After the maintenance of hollow antislide pile pile concrete is finished, anchor cable 7 is arranged in the anchor hole, then perfusion M30 mortar in anchor hole.After treating that mortar strength reaches designing requirement, billet 17 is installed on hollow rear wall 15 inboards and is carried out prestressed stretch-draw with jack pair anchor cable 7, with the end locking of ground tackle 18 with anchor cable 7, outer end, ground tackle 18 and the billet 17 usefulness concrete with anchor cable are packaged into anchor head 6 then again.
Cover the suitable for reading of hollow body 9 with prefabricated reinforced concrete cover plate 11, the stake top of closed hollow antislide pile 8.
Claims (4)
1. inbuilt anchor head embedded-type anchoring pile, it is characterized in that, comprise hollow antislide pile, anchor head, anchor cable and cover plate, hollow antislide pile is that the cross section is the reinforced concrete pile of rectangle, hollow body is formed at top, the bottom is a solid, and the hollow body that top forms is surrounded by hollow antetheca, hollow rear wall and hollow sidewall; Anchor head is fixed on the inboard of hollow rear wall, and anchor cable one end that the ground tackle of anchor head will pass hollow rear wall is locked in the inboard of hollow rear wall; Cover plate is a reinforced concrete rectangular plate, covers suitable for reading at hollow antislide pile hollow body, sealing stake top.
2. inbuilt anchor head embedded-type anchoring pile according to claim 1 is characterized in that, between ground tackle and the hollow rear wall billet is set, and the outside of anchor cable outer end, ground tackle and billet is encapsulated by concrete.
3. inbuilt anchor head embedded-type anchoring pile according to claim 1 is characterized in that, cover plate is consistent with hollow antislide pile sectional dimension.
4. the method to set up of inbuilt anchor head embedded-type anchoring pile according to claim 1 is characterized in that, concrete steps comprise excavation stake hole, a fluid concrete, drill through anchor hole, settle anchor cable and anchor head, sealing stake to push up; Excavate the stake hole, excavate the stake hole at the place, landslide that need are reinforced, the reinforcing cage of the hollow antislide pile of colligation in the stake hole, it is the frame construction of hollow rectangle that reinforcing cage forms the cross section, installs on the reinforcing cage rear side and reserves steel pipe; Fluid concrete, form the solid of bottom at bottom, stake hole fluid concrete, pour into a mould the concrete of the hollow antetheca in stake top, hollow rear wall and two hollow sidewall again, formation top is that hollow body, bottom are the pile body structure of the hollow antislide pile steel concrete of solid; Drill through anchor hole, drill bit passes hollow rear wall and reserves the good ground certain depth of steel pipe to hollow antislide pile rear side; Settle anchor cable and anchor head, after the maintenance of hollow antislide pile pile concrete is finished, anchor cable is arranged in the anchor hole, perfusion mortar then, after treating that mortar strength reaches designing requirement, billet is installed on hollow rear wall inboard and anchor cable is carried out prestressed stretch-draw, with ground tackle the anchor cable end is locked again, use the mortar injection anchor hole then, anchor cable outer end, ground tackle and billet are encapsulated by concrete; Sealing stake top covers the suitable for reading of hollow body with the prefabricated reinforced concrete cover plate, closed hollow antislide pile stake top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102449283A CN101761085B (en) | 2009-12-18 | 2009-12-18 | Built-in anchor head embedded-type anchoring pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102449283A CN101761085B (en) | 2009-12-18 | 2009-12-18 | Built-in anchor head embedded-type anchoring pile |
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| CN101761085A CN101761085A (en) | 2010-06-30 |
| CN101761085B true CN101761085B (en) | 2011-05-25 |
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| CN102926384A (en) * | 2010-03-01 | 2013-02-13 | 张继红 | Prefabricated broaching pile adopting post grouting and construction method thereof |
| CN103266594A (en) * | 2013-05-21 | 2013-08-28 | 中南大学 | Slide-resistant pile |
| CN105064357B (en) * | 2015-08-10 | 2017-06-13 | 徐传召 | A kind of embedded anchor of prestress anchorage cable and anchoring process |
| CN105297750B (en) * | 2015-11-17 | 2017-07-07 | 中国铁道科学研究院铁道建筑研究所 | One kind protection side slope construction method |
| CN105887948B (en) * | 2016-04-15 | 2017-08-22 | 中铁西北科学研究院有限公司西南分院 | A kind of friction pile, which is tilted, resets correction and reinforcement means |
| CN106013180B (en) * | 2016-05-31 | 2018-04-17 | 重庆交通大学 | A kind of deep fill slope pile foundation stabilized control system |
| CN111021376A (en) * | 2019-12-18 | 2020-04-17 | 中国地质科学院探矿工艺研究所 | Three-dimensional frame pile body structure for deep landslide treatment and construction process thereof |
| CN113513034B (en) * | 2021-03-24 | 2022-11-18 | 深圳市工勘岩土集团有限公司 | Buried anchor sealing structure for pile anchor support |
| CN113513033B (en) * | 2021-03-24 | 2022-11-18 | 深圳市工勘岩土集团有限公司 | Construction method of buried anchor sealing structure |
| CN113356239B (en) * | 2021-05-25 | 2022-11-18 | 深圳市工勘岩土集团有限公司 | Slope double-row pile and anchor cable supporting structure |
| CN113655204B (en) * | 2021-08-13 | 2024-03-22 | 重庆地质矿产研究院 | Manual slide bed suitable for hydrodynamic landslide model test and preparation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058247A (en) * | 1991-07-12 | 1992-01-29 | 中国建筑东北设计院 | Multi-layer integrate working pile supporting system and job practices |
| CN2665216Y (en) * | 2003-10-31 | 2004-12-22 | 三峡大学 | Friction pile |
| WO2005038146A1 (en) * | 2003-10-17 | 2005-04-28 | University Of Southampton | Marine foundations |
| CN2753557Y (en) * | 2004-12-21 | 2006-01-25 | 颜剑鸣 | Concrete hollow square pile centrifugal forming mould |
| CN2876180Y (en) * | 2005-12-05 | 2007-03-07 | 颜小荣 | Normal polygon prestressed hollow pile end plate |
-
2009
- 2009-12-18 CN CN2009102449283A patent/CN101761085B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058247A (en) * | 1991-07-12 | 1992-01-29 | 中国建筑东北设计院 | Multi-layer integrate working pile supporting system and job practices |
| WO2005038146A1 (en) * | 2003-10-17 | 2005-04-28 | University Of Southampton | Marine foundations |
| CN2665216Y (en) * | 2003-10-31 | 2004-12-22 | 三峡大学 | Friction pile |
| CN2753557Y (en) * | 2004-12-21 | 2006-01-25 | 颜剑鸣 | Concrete hollow square pile centrifugal forming mould |
| CN2876180Y (en) * | 2005-12-05 | 2007-03-07 | 颜小荣 | Normal polygon prestressed hollow pile end plate |
Non-Patent Citations (14)
| Title |
|---|
| JP昭61-072124A 1986.04.14 |
| JP昭62-129414A 1987.06.11 |
| JP特开2001-90080A 2001.04.03 |
| 刘小渝 |
| 刘小渝;赵勇;林新.钢筋砼空心截面抗滑桩的研究.《重庆交通学院学报》.2006,第25卷(第3期),59-61. * |
| 刘志贵 |
| 刘志贵;李俊雄.园形空心抗滑桩在滑坡治理中的运用及成效.《中国地质灾害与防治学报》.1995,第6卷(第3期),63-65. * |
| 彭书林 |
| 彭书林;高大水.马槽岭滑坡拉锚抗滑桩支挡及新型无粘结锚索应用.《湖北省三峡库区地质灾害防治工程论文集》.2005,186-190. * |
| 李俊雄.园形空心抗滑桩在滑坡治理中的运用及成效.《中国地质灾害与防治学报》.1995,第6卷(第3期),63-65. |
| 李明镇.关于空心抗滑桩的研究.《铁道建筑》.1993,(第11期), * |
| 林新.钢筋砼空心截面抗滑桩的研究.《重庆交通学院学报》.2006,第25卷(第3期),59-61. |
| 赵勇 |
| 高大水.马槽岭滑坡拉锚抗滑桩支挡及新型无粘结锚索应用.《湖北省三峡库区地质灾害防治工程论文集》.2005,186-190. |
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Address after: No. 10, Zhongshan Road, Tianjin, Hebei District Patentee after: China Railway Design Group Limited Address before: No. 10, Zhongshan Road, Tianjin, Hebei District Patentee before: China Railway Third Survey and Design Institute Group Ltd. |