CN204282360U - A kind of covering layer prestressed anchor fixing structure - Google Patents
A kind of covering layer prestressed anchor fixing structure Download PDFInfo
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- CN204282360U CN204282360U CN201420733773.6U CN201420733773U CN204282360U CN 204282360 U CN204282360 U CN 204282360U CN 201420733773 U CN201420733773 U CN 201420733773U CN 204282360 U CN204282360 U CN 204282360U
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- anchor cable
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Abstract
The utility model discloses a kind of covering layer prestressed anchor fixing structure, comprise anchoring section, stretch-draw section and be embedded in the anchor cable body of anchoring section and stretch-draw intersegmental part, grout stop is provided with between described anchoring section and stretch-draw section, the stretch-draw section of anchor cable body is enclosed with fire hose, described fire hose and grout stop compact siro spinning technology; Described anchoring section and stretch-draw section are respectively arranged with anchoring section inlet pipe and stretch-draw section inlet pipe, and are provided with the return pipe corresponding with stretch-draw section inlet pipe to anchoring section inlet pipe on anchoring section and stretch-draw section; Described fire hose is wrapped in the stretch-draw section of anchor cable body, and extends to the anchor cable aperture of anchor cable body always.Adopt prestressed anchor Cable Structure described in the utility model, when passing through cover-layer section, no longer need Gu Bi or follow pipe, directly anchor cable body is sent into anchor cable hole can be in the milk, its stretch-draw section slurries will all freeze solidly on anchor cable body periphery, slurry can not be altered in covering layer, enormously simplify anchor cable construction operation, accelerate construction speed.
Description
Technical field
The utility model belongs to geotechnical engineering slope retaining technical field, relates to a kind of geotechnical engineering soil-slope prestressing force supporting and protection structure, specifically relates to a kind of covering layer prestressed anchor fixing structure.
Background technology
At present, in geotechnical engineering deep covering layer slope process engineering, typically use antislide pile+stake top prestressing anchor support structure, when prestress anchorage cable passes through covering layer, its conventional method mainly adopts solid wall approach and follows tube method; Wherein, Gu wall approach carries out consolidation grouting process to hole wall holing while, the method is in work progress, one section need be crept into and admittedly fill with one section, operation is more loaded down with trivial details, and in covering layer, solid process grout consumption of filling with is comparatively large, significantly increases construction cost, especially, in built on stilts serious covering layer, the method is adopted to be difficult to carry out.Being the setting of casing follow-up when holing with tube method, in work progress, one section of follow-up, one section of sleeve pipe need be crept into, there is operation equally loaded down with trivial details, and sleeve pipe being difficult to take out, and then adds the investment cost of sleeve pipe.As can be seen here, adopt above-mentioned two kinds of methods all to there is operation loaded down with trivial details, efficiency of construction is low, the deficiency that construction cost is high.
Utility model content
For solving the problem, the utility model provides a kind of covering layer prestressed anchor fixing structure.
The utility model is achieved by following technical solution.
A kind of covering layer prestressed anchor fixing structure, comprise anchoring section, stretch-draw section and be embedded in the anchor cable body of anchoring section and stretch-draw intersegmental part, be provided with grout stop between described anchoring section and stretch-draw section, the stretch-draw section of anchor cable body is enclosed with fire hose, described fire hose and grout stop compact siro spinning technology.
Described anchoring section and stretch-draw section are respectively arranged with anchoring section inlet pipe and stretch-draw section inlet pipe, and are provided with the return pipe corresponding with stretch-draw section inlet pipe to anchoring section inlet pipe on anchoring section and stretch-draw section.
Described fire hose is wrapped in the stretch-draw section of anchor cable body, and extends to the anchor cable aperture of anchor cable body always.
Described fire hose take rubber as liner, and external surface is flax braid.There is good toughness like this, there is good water proof resistance effect.
The bore of described fire hose is greater than the anchor cable aperture of anchor cable body.
The beneficial effects of the utility model are:
Compared with prior art, prestressed anchor Cable Structure described in the utility model is adopted, when passing through cover-layer section, no longer need Gu Bi or follow pipe, directly anchor cable body is sent into anchor cable hole can be in the milk, its stretch-draw section slurries will all freeze solidly on anchor cable body periphery, can not alter slurry in covering layer; Overcome traditional prestress anchorage cable adopt solid wall approach and pass through the deficiency existing for deep covering layer with tube method, enormously simplify anchor cable construction operation, accelerate construction speed, save construction investment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A section structure for amplifying schematic diagram of Fig. 1.
In figure: 1-fire hose, 2-anchor cable body, 3-grout stop, 4-covering layer and basement rock line of demarcation, 5-anchoring section inlet pipe, 6-stretch-draw section inlet pipe, 7-anchoring section, 8-stretch-draw section.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1 and Figure 2, a kind of covering layer prestressed anchor fixing structure described in the utility model, comprise anchoring section 7, stretch-draw section 8 and be embedded in the anchor cable body 2 of anchoring section 7 and stretch-draw section 8 inside, grout stop 3 is provided with between described anchoring section 7 and stretch-draw section 8, the stretch-draw section 8 of anchor cable body 2 is enclosed with fire hose 1, described fire hose 1 and grout stop 3 compact siro spinning technology.
Described anchoring section 7 and stretch-draw section 8 are respectively arranged with anchoring section inlet pipe 5 and stretch-draw section inlet pipe 6, and on anchoring section 7 and stretch-draw section 8, be provided with the return pipe corresponding with stretch-draw section inlet pipe 6 to anchoring section inlet pipe 5.
Described fire hose 1 is wrapped in the stretch-draw section 8 of anchor cable body 2, and extends to the anchor cable aperture of anchor cable body 2 always.
Described fire hose 1 take rubber as liner, and external surface is flax braid.There is good toughness like this, there is good water proof resistance effect.
The bore of described fire hose 1 is greater than the anchor cable aperture of anchor cable body 2.
As shown in Figure 1, adopt prestressed anchor fixing structure described in the utility model to have cohere prestress anchorage cable time, anchor cable is slip casting by stages, and first phase completes the slip casting of anchoring section 7; Until anchoring section 7 grout cures and to anchor cable enforcement stretch-draw after reaching its design strength, thereafter stretch-draw section 8 slip casting (in Fig. 1, line of demarcation 4 is covering layer and basement rock line of demarcation) is carried out again, i.e. the second stage of slip casting, its slurries are frozen into body of cement in fire hose 1, form effective protection to anchor cable body 2.
To non-bonded prestressed concrete anchor cable, the second stage of slip casting of stretch-draw section 8 after first phase completes the slip casting of anchoring section 7, can be implemented, until grout cures and after reaching its design strength, implement stretch-draw work.
Above-mentionedly should adopt underflow in the inner slip casting of the second stage of fire hose 1, its water/binder ratio is advisable with 0.5:1.Fire hose 1 bore should be a bit larger tham anchor cable aperture.
Adopt the technical program to be successfully applied in hair man Hydropower Station engineering, this project is positioned at Shuicheng County, Guizhou Province, power station total installation of generating capacity 180MW (3 × 60MW).In the accumulation body harnessing project of Mao Jiahe factory building downstream, accumulation body bottom adopts antislide pile+stake top prestressing anchor support system, and arrange 51 300t level prestress anchorage cables altogether, prestress anchorage cable passes through covering and deep about 50 ~ 70m.
Application achievements shows: this prestressed anchor Cable Structure preferably resolves the problem that prestress anchorage cable passes through deep covering layer, and this anchor cable structure body has the advantage simplifying anchor cable construction operation, accelerating construction progress, saving engineering cost; This achievement achieves comparatively satisfied effect, possesses good promotion prospect.
Claims (5)
1. a covering layer prestressed anchor fixing structure, comprise anchoring section (7), stretch-draw section (8) and be embedded in the inner anchor cable body (2) of anchoring section (7) and stretch-draw section (8), it is characterized in that: between described anchoring section (7) and stretch-draw section (8), be provided with grout stop (3), the stretch-draw section (8) of anchor cable body (2) is enclosed with fire hose (1), described fire hose (1) and grout stop (3) compact siro spinning technology.
2. a kind of covering layer prestressed anchor fixing structure according to claim 1, it is characterized in that: described anchoring section (7) and stretch-draw section (8) are respectively arranged with anchoring section inlet pipe (5) and stretch-draw section inlet pipe (6), and be provided with on anchoring section (7) and stretch-draw section (8) and anchoring section inlet pipe (5) and the corresponding return pipe of stretch-draw section inlet pipe (6).
3. a kind of covering layer prestressed anchor fixing structure according to claim 1, it is characterized in that: described fire hose (1) is wrapped in the stretch-draw section (8) of anchor cable body (2), and extend to the anchor cable aperture of anchor cable body (2) always.
4. a kind of covering layer prestressed anchor fixing structure according to claim 1, is characterized in that: described fire hose (1) take rubber as liner, and external surface is flax braid.
5. a kind of covering layer prestressed anchor fixing structure according to claim 1, is characterized in that: the bore of described fire hose (1) is greater than the anchor cable aperture of anchor cable body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420733773.6U CN204282360U (en) | 2014-11-27 | 2014-11-27 | A kind of covering layer prestressed anchor fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420733773.6U CN204282360U (en) | 2014-11-27 | 2014-11-27 | A kind of covering layer prestressed anchor fixing structure |
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| CN204282360U true CN204282360U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420733773.6U Active CN204282360U (en) | 2014-11-27 | 2014-11-27 | A kind of covering layer prestressed anchor fixing structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973559A (en) * | 2016-07-04 | 2016-09-28 | 青岛建集团有限公司 | Motor train unit body colliding rigid wall test platform system |
| CN110158626A (en) * | 2019-06-20 | 2019-08-23 | 广东宏丰建设工程有限公司 | A kind of water stop curtain structure |
| CN110725312A (en) * | 2019-09-25 | 2020-01-24 | 东南大学 | Basalt fiber pre-stressed anchor cable system and anchoring method thereof |
-
2014
- 2014-11-27 CN CN201420733773.6U patent/CN204282360U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973559A (en) * | 2016-07-04 | 2016-09-28 | 青岛建集团有限公司 | Motor train unit body colliding rigid wall test platform system |
| CN105973559B (en) * | 2016-07-04 | 2018-11-20 | 青岛一建集团有限公司 | Motor train unit body hits rigid wall testing platform system |
| CN110158626A (en) * | 2019-06-20 | 2019-08-23 | 广东宏丰建设工程有限公司 | A kind of water stop curtain structure |
| CN110158626B (en) * | 2019-06-20 | 2020-11-24 | 广东宏丰建设工程有限公司 | Waterproof curtain structure |
| CN110725312A (en) * | 2019-09-25 | 2020-01-24 | 东南大学 | Basalt fiber pre-stressed anchor cable system and anchoring method thereof |
| CN110725312B (en) * | 2019-09-25 | 2021-04-16 | 东南大学 | Basalt fiber pre-stressed anchor cable system and anchoring method thereof |
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