CN104532834A - Energy-dissipation self-adaptive anti-seismic anchor rope structure and implementation method thereof - Google Patents
Energy-dissipation self-adaptive anti-seismic anchor rope structure and implementation method thereof Download PDFInfo
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- CN104532834A CN104532834A CN201410751411.4A CN201410751411A CN104532834A CN 104532834 A CN104532834 A CN 104532834A CN 201410751411 A CN201410751411 A CN 201410751411A CN 104532834 A CN104532834 A CN 104532834A
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- steel strand
- anchor
- spring assembly
- metal damper
- ground tackle
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses an energy-dissipation self-adaptive anti-seismic anchor rope structure which comprises a spring device, a sleeve type metal damper, an anchorage device, an anchorage device clamping piece, a bearing plate and a steel strand. The energy-dissipation self-adaptive anti-seismic anchor rope structure is characterized in that the spring device is arranged between the bearing plate on the end part of the anchor rope and the anchorage device; the sleeve type metal damper is arranged outside the spring device. A specific implementation method comprises the following steps: welding one end of the spring device with the bearing plate, penetrating the steel strand through the bearing plate and the spring device, tightly adhering the bearing plate to a concrete anchorage pier, arranging the sleeve type metal damper on the outer part of the spring device in a sleeving node, installing the anchorage device, penetrating the steel strand through the anchorage device and installing the anchorage device. The energy-dissipation self-adaptive anti-seismic anchor rope structure and the specific implementation method disclosed by the invention has the technical effects that the sleeve type metal damper and the spring device can be used for providing initial rigidity to meet the normal using function of the structure, the concentrated inner force generated on the anchorage device by earthquake load is reduced through the sleeve type metal damper, the self-restoration force after the earthquake is provided through the spring device, and the self-adaptive capacity of the structure is improved.
Description
Technical field
The present invention relates to a kind of anchor cable structure, be particularly applied in the antidetonation control structure of geological hazard control in geotechnical engineering field.
Background technology
In recent years, domesticly there occurs repeatedly great earthquake, as Wenchuan County in Sichuan, Yushu district, Qinghai, the Zhang County earthquake of Minxian County, Gansu etc. bring huge loss to the life of the people and property, therefore the protection against and mitigation of earthquake disasters situation of China is very severe.At present, prestress anchorage cable engineering protection limit (cunning) slope in water conservancy and hydropower, railway and highway sector application widely.Prestress anchorage cable is a kind of structural system bearing pulling force, its one end is fixed on (or in structure) in stable stratum, the other end be reinforced thing and combine closely, form a kind of new structural complexity, its core tension body is high strength wire.
Anchorage cable engineering has become a kind of efficient, economic and practical engineering means in geotechnical engineering.But this structure is under earthquake operating mode, because the strenuous vibration of side slope is out of shape, moment huge pulling force is produced to anchor cable, some positions of anchor cable structure very easily produce stress and concentrate, as the antiskid thread structure of Anchor Cable Anchorage intermediate plate and the steel strand position of clamping thereof, easily cause screw thread stripped thread or steel strand brittle failure when the steel strand of antiskid thread structure and clamping thereof can not bear this stress, cause the inefficacy of whole anchor cable structure, thus make slope instability cause huge harm.
Chinese patent 200910190942.X discloses a kind of quake-proof anchor rope, this anchor cable structure is when instant impact suffered by anchor cable exceedes the maximum static friction force between antidetonation ground tackle and anchor cable, anchor cable produces relative to antidetonation ground tackle and slides, thus the instant impact of buffering earthquake, the absolute growth of free section of anchor cable is elongated simultaneously, the instant impact of further reduction anchor cable, avoids anchoring system to transship or cable body is broken, and reaches the object of antidetonation.
Anchor cable structure disclosed in above-mentioned patent has certain effect to the impact force alleviating earthquake moment.But this structure mainly utilizes the telescopicing performance of free section of anchor cable to reduce the instant impact of anchor cable, and anchor cable self still may be in overload condition; When instant impact suffered by anchor cable exceedes the maximum static friction force between antidetonation ground tackle and anchor cable, anchor cable produces relative to antidetonation ground tackle and slides, and now the antiskid thread of antidetonation ground tackle may produce stripped thread, causes antidetonation ground tackle to lose efficacy.
Thus, need to be further improved existing anchor cable structure.
Summary of the invention
For limit (cunning) the slope engineering that requirements for fortification against earthquake is higher, this invention exploits a kind of energy dissipating self adaptation quake-proof anchor rope structure and implementation method.This structure mounting spring device at the outer installation sleeve cartridge type metal damper of spring assembly between the loaded plate and ground tackle of anchor cable end.When anchor cable end is subject to seismic load huge instantaneously, metal damping unit can play energy dissipating effect, reduce the Earthquake Internal Force of anchor cable end, especially reduce the instantaneous pulling force between steel strand and anchor clipper, be unlikely to the connection between destruction steel strand and ground tackle and cause the loss of anchor cable pulling force or cause the inefficacy of anchor cable structure.Spring assembly may be provided in the self-recoverage power after geological process, makes by Stress relief between spring assembly and steel strand, improves the adaptive ability of structure, reduces prestressed loss.
The present invention is realized by following scheme: a kind of energy dissipating self adaptation quake-proof anchor rope structure, this structure comprises spring assembly, telescopic metal damper, ground tackle, anchor clipper, loaded plate and steel strand.Be primarily characterized in that: mounting spring device between the loaded plate and ground tackle of anchor cable end, and at the outer installation sleeve cartridge type metal damper of spring assembly, wherein telescopic metal damper cross-sectional diameter is less than ground tackle cross-sectional diameter.In normal conditions, telescopic metal damper and spring assembly can provide initial stiffness, thus meet the rigidity requirement of anchor cable structure under normal usage function; And under earthquake operating mode, allow metal damper cross section yield rate to reach maximum, thus reduce the internal force of structure.Implementation step of the present invention is: boring, anchor cable installation, the slip casting of anchoring method, set up concrete anchor pier, install antishock device, anchorage cable stretching and concrete enclosing anchor head.Wherein installing antishock device is final steps of the present invention, specific implementation method is: first welded with loaded plate one end of spring assembly, steel strand are reserved steel strand hole and spring assembly through loaded plate, then loaded plate is close to concrete anchor pier, telescopic metal damper is placed on spring assembly outside, ground tackle is installed, anchor clipper is installed in the reserved steel strand hole of ground tackle by reserving steel strand hole through ground tackle by steel strand, then prepares the stretch-draw carrying out anchor cable.
Technique effect of the present invention is: mounting spring device and telescopic metal damper between the loaded plate and ground tackle of anchor cable end.In normal conditions, telescopic metal damper and spring assembly can provide initial stiffness, meet structure normal usage function; The concentrated internal force that the energy dissipating effect of telescopic metal damper reduction seismic load produces Anchor Cable Anchorage is utilized under earthquake operating mode, especially the concentrated force between anchor cable steel strand and anchor cable intermediate plate, and the self-recoverage power after utilizing spring assembly to be provided in geological process, make to pass through Stress relief between spring assembly and steel strand, improve the adaptive ability of structure, reduce prestressed loss.
Advantage of the present invention is: spring assembly and telescopic metal damper structure simply, be convenient to produce, and cost are low, little on construction costs impact; Secondly structure assembling of the present invention is convenient, easy for installation during site operation, spring one end welds then outside installation sleeve cartridge type metal damper with loaded plate, the other end is connected with ground tackle, and the elastic constants etc. of spring of the present invention and metal damper can be determined according to Practical Project; Again, the present invention is applied to the safety stock that engineering can improve structure, makes structure be unlikely to lose efficacy instantaneously under the unfavorable conditions of pole, easy to replace and maintain after shake.
Accompanying drawing content
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is anchor cable overall structure figure of the present invention;
Fig. 2 is anchor device structure figure of the present invention;
Fig. 3 is carrying plate structure figure of the present invention;
Fig. 4 is loaded plate of the present invention, telescopic metal damper, spring assembly and ground tackle connection diagram;
In figure: 1. spring assembly, 2. telescopic metal damper, 3. ground tackle, 4. anchor clipper, 5. loaded plate, 6. concrete enclosing anchor head, 7. concrete anchor pier, 8. reserved steel strand hole, 9. steel strand.
Detailed description of the invention
Core of the present invention is mounting spring device and telescopic metal damper between the loaded plate and ground tackle of prestress anchorage cable end, technique effect for reaching is: in normal conditions, telescopic metal damper and spring assembly can provide initial stiffness, meet structure normal usage function; The concentrated internal force that the energy dissipating effect of telescopic metal damper reduction seismic load produces Anchor Cable Anchorage is utilized under earthquake operating mode, especially the concentrated force between anchor cable steel strand and anchor cable intermediate plate, and the self-recoverage power after utilizing spring assembly to be provided in geological process, reduce prestressed loss.With reference to the accompanying drawings a kind of energy dissipating self adaptation quake-proof anchor rope structure specific implementation method is described further:
(1) hole.Boring is the critical process in anchor cable construction, and the hole depth of hole is no less than anchorage cable design length.
(2) anchor cable is installed.With the clear hole of high-pressure blast, steel strand (9) are installed in anchor cable hole.
(3) anchoring method slip casting.Adopt the construction of exhaust slip casting method, anchor cable hole slip casting adopts slurry filling machine.It is low that the hole Grouting Pipe that has a down dip is inserted to hole, and mortar is entered by hole rising pouring, and air is discharged by anchor cable hole; Updip and lateral aperture, mortar is injected by aperture, air pressure at the bottom of hole, by entering at the bottom of hole outside stack tap.
(4) concrete anchor pier (7) is set up.Effect is the Impact direction point load of ground tackle being delivered to scar and adjustment scar.
(5) antishock device is installed.This step is final steps of the present invention.First one end of spring assembly (1) is welded with loaded plate (5), by steel strand (9) through the reserved steel strand hole (8) of loaded plate (5) and spring assembly (1), then loaded plate (5) is close to concrete anchor pier (7), telescopic metal damper (2) is placed on spring assembly (1) outside, ground tackle (3) is installed, anchor clipper (4) is installed in the reserved steel strand hole (8) of ground tackle (3) by reserving steel strand hole (8) through ground tackle (3) by steel strand, then the stretch-draw carrying out anchor cable is prepared.
(6) anchorage cable stretching.Need before stretch-draw to demarcate tensioning equipment.Stay part steel strand outside can not first excising after anchorage cable stretching locking, after engineering construction completes, carry out sealing off and covering anchorage according to test case or mend stretch-draw.
(7) concrete enclosing anchor head.After steel strand (9) excision, the outer steel strand length of anchor head is not less than 10cm, ensures that the unlikely slippage of work anchor is convenient to carry out benefit stretch-draw operation when prestressing force is not enough simultaneously, does concrete enclosing anchor head (6) afterwards in outside.
Claims (4)
1. energy dissipating self adaptation quake-proof anchor rope structure and an implementation method, is characterized in that: described anchor cable structure comprises spring assembly (1), telescopic metal damper (2), ground tackle (3) anchor clipper (4), loaded plate (5) and steel strand (9), the implementation step of described anchor cable structure is: boring, anchor cable installation, the slip casting of anchoring method, set up concrete anchor pier, install antishock device, anchorage cable stretching and concrete enclosing anchor head, wherein installing antishock device is final steps of the present invention: first welded with loaded plate (5) one end of spring assembly (1), by steel strand (9) through the reserved steel strand hole (8) of loaded plate (5) and spring assembly (1), then loaded plate (5) is close to concrete anchor pier (7), telescopic metal damper (2) is placed on spring assembly (1) outside, ground tackle (3) is installed, anchor clipper (4) is installed in the reserved steel strand hole (8) of ground tackle (3) by reserving steel strand hole (8) through ground tackle (3) by steel strand, then the stretch-draw carrying out anchor cable is prepared.
2. energy dissipating self adaptation quake-proof anchor rope structure according to claim 1, it is characterized in that: mounting spring device between the loaded plate and ground tackle of anchor cable end, and at the outer installation sleeve cartridge type metal damper of spring assembly, wherein telescopic metal damper cross-sectional diameter is less than ground tackle cross-sectional diameter.
3. energy dissipating self adaptation quake-proof anchor rope structure according to claim 2, it is characterized in that: one end of spring assembly is welded with loaded plate, steel strand are reserved steel strand hole and spring assembly through loaded plate, then loaded plate is close to concrete anchor pier, telescopic metal damper is placed on spring assembly outside, ground tackle is installed, anchor clipper is installed in the reserved steel strand hole of ground tackle through ground tackle by reserving steel strand hole by steel strand.
4. energy dissipating self adaptation quake-proof anchor rope structure according to claim 1, it is characterized in that: in normal conditions, telescopic metal damper and spring assembly can provide initial stiffness, meet structure normal usage function; The concentrated internal force that the energy dissipating effect of telescopic metal damper reduction seismic load produces Anchor Cable Anchorage is utilized under earthquake operating mode, especially the concentrated force between anchor cable steel strand and anchor cable intermediate plate, and the self-recoverage power after utilizing spring assembly to be provided in geological process, make to pass through Stress relief between spring assembly and steel strand, improve the adaptive ability of structure, reduce prestressed loss.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410751411.4A CN104532834A (en) | 2014-12-11 | 2014-12-11 | Energy-dissipation self-adaptive anti-seismic anchor rope structure and implementation method thereof |
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| CN201410751411.4A CN104532834A (en) | 2014-12-11 | 2014-12-11 | Energy-dissipation self-adaptive anti-seismic anchor rope structure and implementation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245782A (en) * | 2016-10-17 | 2016-12-21 | 安徽信泽科技有限公司 | The three-dimensional shock isolation support that a kind of vertical early stage rigidity can regulate |
| CN106285145A (en) * | 2016-10-17 | 2017-01-04 | 安徽信泽科技有限公司 | A kind of three-dimensional shock isolation support that can regulate vertical rigidity in early days |
| CN106499078A (en) * | 2016-10-17 | 2017-03-15 | 安徽信泽科技有限公司 | A kind of rubber air spring damper that can adjust early stage rigidity |
| CN106759323A (en) * | 2017-01-20 | 2017-05-31 | 中铁二院工程集团有限责任公司 | Anchor pole shock-resistant and energy-dissipating is constructed |
| CN108978495A (en) * | 2018-10-16 | 2018-12-11 | 重庆交通大学 | Simply supported non-uniform bridge negative moment area steel beam prestressing force self compensation improved method |
| CN109083144A (en) * | 2018-09-29 | 2018-12-25 | 石家庄铁道大学 | A kind of energy consumption antidetonation prestress anchorage cable |
| CN109295974A (en) * | 2018-09-27 | 2019-02-01 | 中国人民解放军军事科学院国防工程研究院 | A kind of dynamic load modular controllable displacement prestress anchorage cable head elasticity system and method |
| CN110863490A (en) * | 2019-12-24 | 2020-03-06 | 中铁二院工程集团有限责任公司 | Pressure type shock-absorbing energy-dissipating pre-stressed anchor cable structure and construction method |
| CN111395333A (en) * | 2020-04-21 | 2020-07-10 | 中铁西北科学研究院有限公司 | Assembled elastic damping anchorage device suitable for high-intensity area and construction method thereof |
| CN111424700A (en) * | 2020-04-21 | 2020-07-17 | 中铁西北科学研究院有限公司 | BFRP-spiral sleeve valve type composite anchoring system for high-intensity seismic area and construction method thereof |
| CN111455994A (en) * | 2020-04-21 | 2020-07-28 | 中铁西北科学研究院有限公司 | Tuned damping type BFRP anchor cable head shock absorption yield structure and method for high-intensity seismic region |
| CN112942389A (en) * | 2021-02-07 | 2021-06-11 | 四川华佑天成科技有限公司 | A shock attenuation energy dissipation component for stock frame roof beam and stock system thereof |
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| CN203463126U (en) * | 2013-08-13 | 2014-03-05 | 长沙理工大学 | Energy-absorbing anchor rod |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011074578A (en) * | 2009-09-29 | 2011-04-14 | Kumagai Gumi Co Ltd | Ground anchor |
| CN201857612U (en) * | 2010-11-11 | 2011-06-08 | 中国科学院武汉岩土力学研究所 | Extending-elastic rock-burst-resistant anchor rod |
| CN201934112U (en) * | 2010-12-17 | 2011-08-17 | 孟志强 | Elastic and flexible anchor rod |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245782A (en) * | 2016-10-17 | 2016-12-21 | 安徽信泽科技有限公司 | The three-dimensional shock isolation support that a kind of vertical early stage rigidity can regulate |
| CN106285145A (en) * | 2016-10-17 | 2017-01-04 | 安徽信泽科技有限公司 | A kind of three-dimensional shock isolation support that can regulate vertical rigidity in early days |
| CN106499078A (en) * | 2016-10-17 | 2017-03-15 | 安徽信泽科技有限公司 | A kind of rubber air spring damper that can adjust early stage rigidity |
| CN106759323A (en) * | 2017-01-20 | 2017-05-31 | 中铁二院工程集团有限责任公司 | Anchor pole shock-resistant and energy-dissipating is constructed |
| CN109295974A (en) * | 2018-09-27 | 2019-02-01 | 中国人民解放军军事科学院国防工程研究院 | A kind of dynamic load modular controllable displacement prestress anchorage cable head elasticity system and method |
| CN109083144A (en) * | 2018-09-29 | 2018-12-25 | 石家庄铁道大学 | A kind of energy consumption antidetonation prestress anchorage cable |
| CN109083144B (en) * | 2018-09-29 | 2023-12-19 | 石家庄铁道大学 | Energy-consumption anti-seismic prestressed anchor cable |
| CN108978495A (en) * | 2018-10-16 | 2018-12-11 | 重庆交通大学 | Simply supported non-uniform bridge negative moment area steel beam prestressing force self compensation improved method |
| CN110863490A (en) * | 2019-12-24 | 2020-03-06 | 中铁二院工程集团有限责任公司 | Pressure type shock-absorbing energy-dissipating pre-stressed anchor cable structure and construction method |
| CN111395333A (en) * | 2020-04-21 | 2020-07-10 | 中铁西北科学研究院有限公司 | Assembled elastic damping anchorage device suitable for high-intensity area and construction method thereof |
| CN111424700A (en) * | 2020-04-21 | 2020-07-17 | 中铁西北科学研究院有限公司 | BFRP-spiral sleeve valve type composite anchoring system for high-intensity seismic area and construction method thereof |
| CN111455994A (en) * | 2020-04-21 | 2020-07-28 | 中铁西北科学研究院有限公司 | Tuned damping type BFRP anchor cable head shock absorption yield structure and method for high-intensity seismic region |
| CN111424700B (en) * | 2020-04-21 | 2024-04-23 | 中铁西北科学研究院有限公司 | BFRP-spiral sleeve valve type composite anchoring system for high-intensity earthquake region and construction method thereof |
| CN111395333B (en) * | 2020-04-21 | 2024-05-17 | 中铁西北科学研究院有限公司 | Assembled elastic damping anchorage device suitable for high-intensity areas and construction method thereof |
| CN112942389A (en) * | 2021-02-07 | 2021-06-11 | 四川华佑天成科技有限公司 | A shock attenuation energy dissipation component for stock frame roof beam and stock system thereof |
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Application publication date: 20150422 |
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