CN204780897U - Detachable prestressed anchorage pole structure - Google Patents

Detachable prestressed anchorage pole structure Download PDF

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Publication number
CN204780897U
CN204780897U CN201520342543.1U CN201520342543U CN204780897U CN 204780897 U CN204780897 U CN 204780897U CN 201520342543 U CN201520342543 U CN 201520342543U CN 204780897 U CN204780897 U CN 204780897U
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China
Prior art keywords
detachable
anchor
section
utility
thick liquid
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Active
Application number
CN201520342543.1U
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Chinese (zh)
Inventor
张伟狄
吴关叶
祝青
王贤彪
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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Priority to CN201520342543.1U priority Critical patent/CN204780897U/en
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Abstract

The utility model relates to a detachable prestressed anchorage pole structure. The utility model aims at providing a detachable prestressed anchorage pole structure that can arrange in advance in high crustal stress, the basic excavation of easily lax rock mass prevents or reduce the long -term lax off -load in basis, assurance engineering construction quality, and simple and convenient, the economic nature of structure is better. The utility model provides a: a detachable prestressed anchorage pole structure which characterized in that: this stock structure comprises the interior anchor section of inboard, the anchor the dismantled section in the outside and the straight screw sleeve that the interior anchor duan yuke of connection dismantled the anchor section be equipped with in the interior anchor section of straight screw sleeve below and end the thick liquid package, the ligature has into thick liquid pipe and return pipe on can dismantling the anchor section, should advance thick liquid pipe and return pipe and all pass only thick liquid package. The utility model is suitable for an engineering fields such as water conservancy water and electricity.

Description

A kind of detachable prestressed anchor structure
Technical field
The utility model patent relates to a kind of detachable prestressed anchor structure, is applicable to the engineering fields such as water conservancy and hydropower.
Background technology
The basis of high-ground stress, easily lax off-load is often run in water conservancy and hydropower, traffic, base pit engineering; before building concrete after this basic top covering rockmass excavation covers; the release of rock mass internal stress may cause basic rock mass to occur, and stratiform is come to nothing, relaxation; reduce the rear rock-mass quality of excavation and integrality; need by reserving certain thickness rock mass topping on excavation face top, in topping, the dismountable prestressed anchor of early excise carries out anchoring.
There is one " expansion shell type detachable hollow slip casting prestressed anchor " in the market, cardinal principle utilizes the anchorage head placing an expansion shell type at anchor rod anchored end, anchor pole is inserted after at the bottom of bolthole and rotate anchor pole by expansion shell type anchoring head unit unlatching (expansion shell type anchoring head flicks and contacts with hole wall), carry out stretch-draw by the frictional force fixing anchor bar of expansion shell type anchoring head and hole wall, finally carry out slip casting.In practice of construction process, because expansion shell type anchoring head requires higher to bore diameter, if bore diameter is slightly biased large, if it is slightly biased little to contact bore diameter with hole wall after easily causing expansion shell type anchoring head to flick, can not ensure after easily causing expansion shell type anchoring head to flick and enough grab wall power, above-mentioned two situations all easily cause anchor pole in stretching process directly to be pulled out bolthole.In quick supporting engineering in enormous quantities, be difficult to the requirement meeting expansion shell type prestressed anchor pole pair aperture, and cause that anchor pole is on the high side, the economy of high volume applications is poor due to the application of expansion shell type anchoring head and hollow slip casting.
Summary of the invention
The technical problems to be solved in the utility model is: for above-mentioned existing problems, a kind of detachable prestressed anchor structure can arranged in advance in high-ground stress, easily lax rock mass foundation excavation is provided, prevent or reduce the long-term lax off-load in basis, guarantee engineering construction quality, and features simple structure, better economy.
The technical scheme that the utility model adopts is: a kind of detachable prestressed anchor structure, it is characterized in that, this anchor structure is made up of the Anchoring part of inner side, the detachable anchor section in outside and the straight screw sleeve that connects Anchoring part and detachable anchor section, the Anchoring part below described straight screw sleeve is provided with grouting bag; Described detachable anchor section is banded with inlet pipe and return pipe, and this inlet pipe and return pipe are all through grouting bag.
Described detachable anchor section overcoat has PVC sleeve pipe; Be surrounded by geotextiles outside described straight screw sleeve, and sealed by galvanized wire colligation.
Described inlet pipe cuts off the half of its section in grouting bag.
The beneficial effects of the utility model are: the utility model adopts regular screw threads steel as prestressed anchor club shaft, what coordinate the conventional construction material such as straight screw sleeve, geotextiles, grouting bag, quick anchoring agent is combined to form a kind of easy construction, economy, reliable, the detachable prestressed anchor structure that is more suitable for extensive rapid construction, can prevent and reduce the long-term lax off-load in high-ground stress, easily lax rock mass foundation excavation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, the present embodiment is a kind of detachable prestressed anchor structure, and the diameter of this anchor pole is 32mm, overall length is about 9m.
In the present embodiment, detachable prestressed anchor club shaft adopts common high-strength finish rolling deformed bar, inner side 7m is Anchoring part 1, outside 2m is detachable anchor section 2, Anchoring part 1 and detachable anchor section 2 adopt straight screw sleeve 3 (internal thread painting butter) to be connected with for convenience detach, geotextiles is surrounded by prevent slurry placement outside straight screw sleeve 3, and by galvanized wire 5 colligation (twining mackintosh outward) sealing; The Anchoring part 1 at straight screw sleeve less than 3 20cm place is arranged grouting bag 8 (being about 20cm) in case grouting liquid string is to detachable anchor section 2, and be that the PVC sleeve pipe 4 of 40mm is as further safeguard protection at detachable anchor section 2 overcoat diameter; Inlet pipe 6 and return pipe 7 colligation are in detachable anchor section 2, and all fix through grouting bag 8, inlet pipe 6 is longer than return pipe 7, the half that inlet pipe 6 cuts off its section in grouting bag 8 (is grown for 10cm, the section of cutting off of this inlet pipe is conducive to carrying out slip casting to grouting bag fast, and grouting bag is filled boring after being full of slurries spreading and closed).
The implementation process of the present embodiment: squeeze into the dark quick anchoring agent of about 300cm 9 in bolthole, to be inserted detachable anchor in bolthole and will high-strength mortar 12 be adopted outside hole levelling, then being fixed by this anchor pole by billet 11 and nut 10 outside hole.Realized the quick anchoring of Anchoring part 1 by the effect of quick anchoring agent 9, quick anchoring agent 9 carries out stretch-draw and slip casting to anchor pole after reaching design strength.The section that during slip casting, first slurries are cut off in grouting bag 8 injects, and grouting bag is filled boring after being full of slurries spreading and closed, and prevent slurries from sealing in detachable anchor section 2, then slurries inject Anchoring part 1 along inlet pipe 6; Reach nut 10 after design strength outside dismountable bolthole and billet 11 until mortar, reversely rotate anchor pole by spanner and pull down detachable anchor section 2.

Claims (3)

1. a detachable prestressed anchor structure, it is characterized in that: this anchor structure is made up of with the straight screw sleeve (3) of detachable anchor section (2) the Anchoring part (1) of inner side, the detachable anchor section (2) in outside and connection Anchoring part (1), and the Anchoring part (1) of described straight screw sleeve (3) below is provided with grouting bag (8); Described detachable anchor section (2) is banded with inlet pipe (6) and return pipe (7), and this inlet pipe and return pipe are all through grouting bag (8).
2. the detachable prestressed anchor structure of one according to claim 1, is characterized in that: described detachable anchor section (2) overcoat has PVC sleeve pipe (4); Described straight screw sleeve is surrounded by geotextiles outside (3), and by galvanized wire (5) colligation sealing.
3. the detachable prestressed anchor structure of one according to claim 1, is characterized in that: described inlet pipe (6) cuts off the half of its section in grouting bag (8).
CN201520342543.1U 2015-05-25 2015-05-25 Detachable prestressed anchorage pole structure Active CN204780897U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520342543.1U CN204780897U (en) 2015-05-25 2015-05-25 Detachable prestressed anchorage pole structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520342543.1U CN204780897U (en) 2015-05-25 2015-05-25 Detachable prestressed anchorage pole structure

Publications (1)

Publication Number Publication Date
CN204780897U true CN204780897U (en) 2015-11-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520342543.1U Active CN204780897U (en) 2015-05-25 2015-05-25 Detachable prestressed anchorage pole structure

Country Status (1)

Country Link
CN (1) CN204780897U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593499A (en) * 2016-11-21 2017-04-26 中国水利水电第九工程局有限公司 Construction method of prestressed anchor rods of underground powerhouse arch crown

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593499A (en) * 2016-11-21 2017-04-26 中国水利水电第九工程局有限公司 Construction method of prestressed anchor rods of underground powerhouse arch crown

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