CN100575615C - Multistage bag-type compression anchor bar - Google Patents
Multistage bag-type compression anchor bar Download PDFInfo
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- CN100575615C CN100575615C CN 200710175927 CN200710175927A CN100575615C CN 100575615 C CN100575615 C CN 100575615C CN 200710175927 CN200710175927 CN 200710175927 CN 200710175927 A CN200710175927 A CN 200710175927A CN 100575615 C CN100575615 C CN 100575615C
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- rod body
- anchor rod
- textile bags
- frenulum
- type compression
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- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
A kind of multistage bag-type compression anchor bar is used for the reinforcement protection of foundation ditch, side slope, tunnel and underground construction at various bad grounds.It comprises the anchor rod body that an end is fixedlyed connected with guide head, wherein is set with the tubular fabric bag outside the anchoring section of anchor rod body, and the diameter of textile bags is greater than 5 centimetres～10 centimetres of armature boring diameters; The textile bags lower port that is positioned at the guiding head end is directly tightened with frenulum and anchor rod body binding, and the textile bags upper port is tightened with frenulum and the Grouting Pipe and the anchor rod body binding of inserting in it; In textile bags, pass through Grouting Pipe grout injection or cement mortar.The present invention is simple in structure, can suppress cement mortar liquid and run off, and improves the plumpness and the integrality of grouting body, strengthens radial compression power, thereby can significantly improve the multistage bag-type compression anchor bar of anchor pole unit's anchorage length uplift resistance and anchoring effect.Be specially adapted to bad ground anchoring engineerings such as rock stratum weak, that contain water and soil layer, joint fissure growth or corrosion rock stratum.
Description
Technical field
The present invention relates to a kind of multistage bag-type compression anchor bar, be used for the reinforcement protection of foundation ditch, side slope, tunnel and underground construction at various bad grounds.
Background technology
In the reinforcement protection technology of foundation ditch, side slope, tunnel and underground construction, adopt anchor pole very extensive, wherein the kind of anchor rod body is a lot, differs from one another, and corresponding construction method is basic identical.Existing anchor pole is in the stratum after the boring, and anchor rod body is packed in the boring, cement paste or cement mortar is poured in the space between the body of rod and boring by Grouting Pipe carries out anchoring again.Rock stratum or corrosion rock stratum that existing anchor pole technology is grown for loose or soil layer that Groundwater Flow is big and cracking crack, joint, the cement paste number of dropouts is big, the plumpness and the integrality of the body that can not guarantee to be in the milk; Lack the radial compression effect when being used for the big soft layer of compressive strain, can weaken the bonding frictional strength of anchoring body and ground interlayer owing to grouting.In a word, in above-mentioned bad ground, adopt current anchor structure pattern all can seriously reduce the anchor uplift resistance, anchoring effect is poor, and the long-term safety reliability of engineering is suffered damage.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple in structure, can suppress cement mortar liquid runs off, improve the plumpness and the integrality of grouting body, strengthen radial compression power, thereby can significantly improve the multistage bag-type compression anchor bar of anchor pole unit's anchorage length uplift resistance and anchoring effect.
Multistage bag-type compression anchor bar of the present invention comprises the anchor rod body that an end is fixedlyed connected with guide head, wherein is set with the tubular fabric bag outside the anchoring section of anchor rod body, and the diameter of textile bags is greater than 5 centimetres～10 centimetres of armature boring diameters; The textile bags lower port that is positioned at the guiding head end is directly tightened with frenulum and anchor rod body binding, and the textile bags upper port is tightened with frenulum and the Grouting Pipe and the anchor rod body binding of inserting in it; In textile bags, pass through Grouting Pipe grout injection or cement mortar.
Multistage bag-type compression anchor bar of the present invention, wherein anchor rod body is connected as a single entity by some reinforcing bars or steel strand and constitutes, and tightens with frenulum and the anchor rod body binding that sealed support is housed at textile bags upper port place; Centre at sealed support is provided with the slip casting through hole along axis direction, and its outer circumference surface upper edge axis direction is provided with the reinforcing bar that embeds in the anchor rod body or the groove of steel strand symmetrically; Grouting Pipe is inserted in the textile bags from the slip casting through hole.
Multistage bag-type compression anchor bar of the present invention, wherein on the outer circumference surface of sealed support, the edge is perpendicular to also being provided with the annular groove that cooperates with frenulum on the axis direction.
Multistage bag-type compression anchor bar of the present invention, wherein textile bags length is 6 meters～15 meters.
Multistage bag-type compression anchor bar of the present invention wherein on the anchor rod body between the upper and lower port of textile bags, is tightened with frenulum and the anchor rod body binding that sealed support is housed every 2.0～3.0 meters.
Multistage bag-type compression anchor bar of the present invention is the textile bags of suit energy pressure-bearing 2Mpa on the anchoring section of anchor rod body, two ends bundle securely with frenulum, form a containment pockets, or tighten a plurality of pouches of formation in the centre binding as required, use Grouting Pipe continous pouring cement paste or the cement mortar that has several apertures in the bag, be full of whole textile bags until slurries, and push to the borehole circumference stratum, form the anchoring body that the bodily form enlarges at last, can improve the uplift resistance of anchor pole unit's anchorage length significantly; Simultaneously, textile bags can prevent the loss of slurries effectively, and economical with materials reduces construction costs.Multistage bag-type compression anchor bar compliance of the present invention is strong, and wide application is specially adapted to the anchoring engineering of foundation ditch, side slope, tunnel and underground construction in the bad grounds such as rock stratum weak, that contain water and soil layer, joint fissure growth or corrosion rock stratum.
Description of drawings
Fig. 1 is multistage bag-type compression anchor bar structure of the present invention and behavior in service schematic diagram (being used for the pit pile anchor supporting);
Fig. 2 is the A-A generalized section (being sealed support structure and behavior in service) of Fig. 1;
Fig. 3 is the lateral view of Fig. 2;
Fig. 4 is the B-B generalized section of Fig. 1.
The specific embodiment
Referring to Fig. 1～Fig. 4, comprise the anchor rod body 2 that an end is fixedlyed connected with guide head 1 among the embodiment shown in the present, and anchor rod body 2 is bundled into one by 4 reinforcing bars or steel strand, outside the anchoring section of anchor rod body 2, be set with tubular fabric bag 3, length is 6 meters～15 meters, and the diameter of textile bags 3 is greater than 5 centimetres～10 centimetres of armature boring diameters; Textile bags 3 lower port that are positioned at guide head 1 end are directly tightened with frenulum and anchor rod body 2 bindings, on the anchor rod body 2 at textile bags 3 upper port places sealed support 5 are housed, and with frenulum textile bags 3 and anchor rod body 2 bindings are tightened; On the anchor rod body 2 between the textile bags 3 upper and lower ports, every 2.0～3.0 meters, sealed support 5 is housed also, with frenulum textile bags 3 and anchor rod body 2 bindings are tightened; In textile bags 3, pass through to insert Grouting Pipe 4 grout injections or cement mortar in it.
Sealed support 5 structures are provided with slip casting through hole 6 in the centre of sealed support 5 along axis direction as shown in Figures 2 and 3, and its outer circumference surface upper edge axis direction is provided with the reinforcing bar that embeds in the anchor rod body 2 or the groove 7 of steel strand symmetrically; On its outer circumference surface, the edge is perpendicular to also being provided with the annular groove 8 that cooperates with frenulum on the axis direction.Grouting Pipe 4 is inserted in it from the slip casting through hole 6 of textile bags 3 upper port.Textile bags 3 can be selected cotton, fiber crops and synthetic fibers material for use, and these materials itself and its all should be able to satisfy the requirement of withstand voltage pressure 2Mpa with binding place of frenulum.Guide head 1 can be convenient to anchor rod body 2 to boring in lay particularly long anchor pole.
Fig. 4 is the B-B generalized section of Fig. 1, promptly not at expand profile after expanding of the slip casting of binding place.
If anchor rod body 2 is a reinforcing bar, the upper port of textile bags 3 directly bundlees with anchor rod body 2 and Grouting Pipe 4 and tightens.
The operating principle of multistage bag-type compression anchor bar of the present invention: adopting aperture pressure is 0.5～1.8Mpa slip casting, and slurries are full of each textile bags, and to the borehole circumference extruding and the expansion of expanding, forms a plurality of continuous swelling pressure type anchoring sections.Its job practices is identical with other anchor pole, anchor rod body-body of rod installation-slip casing by pressure-stretch-draw the several steps that contains textile bags by boring-binding carries out, at last, exposed junction at anchor rod body 2, by structural formula waist rail 10, pressure-bearing backing plate 12 and ground tackle 9 etc., firm the rising of slope protection pile 11 and stratum on every side linked together.
Claims (5)
1, a kind of multistage bag-type compression anchor bar, comprise the anchor rod body (2) that an end is fixedlyed connected with guide head (1), it is characterized in that being set with outside the anchoring section of described anchor rod body (2) tubular fabric bag (3), the diameter of described textile bags (3) is greater than 5 centimetres～10 centimetres of armature boring diameters; Described textile bags (3) lower port that is positioned at described guide head (1) end directly uses frenulum and described anchor rod body (2) binding to tighten, and described textile bags (3) upper port is tightened with frenulum and the Grouting Pipe (4) and described anchor rod body (2) binding of inserting in it; In described textile bags (3) by described Grouting Pipe (4) grout injection or husky cement mortar.
2, multistage bag-type compression anchor bar according to claim 1, it is characterized in that described anchor rod body (2) is connected as a single entity by some reinforcing bars or steel strand constitutes, and tightens with frenulum and described anchor rod body (2) binding that sealed support (5) is housed at described textile bags (3) upper port place; Centre at described sealed support (5) is provided with slip casting through hole (6) along axis direction, and its outer circumference surface upper edge axis direction is provided with the reinforcing bar that embeds in the described anchor rod body (2) or the groove (7) of steel strand symmetrically; Described Grouting Pipe (4) is inserted in the described textile bags (3) from described slip casting through hole (5).
3, multistage bag-type compression anchor bar according to claim 1 and 2 is characterized in that on the outer circumference surface of described sealed support (5), and the edge is perpendicular to also being provided with the annular groove (8) that cooperates with frenulum on the axis direction.
4, multistage bag-type compression anchor bar according to claim 3 is characterized in that described textile bags (3) length is 6 meters～15 meters.
5, multistage bag-type compression anchor bar according to claim 4, it is characterized in that on the described anchor rod body (2) between the upper and lower port of described textile bags (3), tighten with frenulum and described anchor rod body (2) binding that described sealed support (5) is housed every 2.0～3.0 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710175927 CN100575615C (en) | 2007-10-16 | 2007-10-16 | Multistage bag-type compression anchor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710175927 CN100575615C (en) | 2007-10-16 | 2007-10-16 | Multistage bag-type compression anchor bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101148877A CN101148877A (en) | 2008-03-26 |
| CN100575615C true CN100575615C (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710175927 Active CN100575615C (en) | 2007-10-16 | 2007-10-16 | Multistage bag-type compression anchor bar |
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| CN (1) | CN100575615C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929163B (en) * | 2009-12-17 | 2011-10-05 | 浙江中联建设集团有限公司 | Support construction process of lotus root-shaped segmental expanded soil anchor rod |
| CN102926775B (en) * | 2012-11-23 | 2015-06-17 | 平顶山市安泰华矿用安全设备制造有限公司 | Grouting reinforcement device for anchor rod |
| CN103266609A (en) * | 2013-04-25 | 2013-08-28 | 中天建设集团有限公司 | Process for constructing prestressed anchor rod in deep foundation pit supporting system |
| CN103498691B (en) * | 2013-09-04 | 2016-03-02 | 中国矿业大学 | A kind of mining many steel strand combination supporting device and method |
| CN103850696B (en) * | 2014-01-22 | 2016-04-13 | 山东科技大学 | Multistage anchoring type grouting rock bolt and anchoring process thereof |
| CN105239570A (en) * | 2015-09-30 | 2016-01-13 | 常州大学怀德学院 | Multi-bag type joint-expanded anchor rod and foundation pit supporting construction method |
| CN105672312B (en) * | 2016-03-25 | 2018-08-31 | 中国京冶工程技术有限公司 | Using the cabin formula anchor and construction method of fibre reinforced composites |
| CN107882042A (en) * | 2017-12-27 | 2018-04-06 | 上海智平基础工程有限公司 | Supporting construction and its construction method are supportted before a kind of bellows |
| CN108824456B (en) * | 2018-06-26 | 2020-07-10 | 重庆交通大学 | Anchor rod positioning support piece |
| CN109024582B (en) * | 2018-06-26 | 2020-09-08 | 重庆交通大学 | Reinforced anchor rod assembly |
| CN117627700B (en) * | 2023-11-29 | 2024-05-28 | 河南龙宇能源股份有限公司 | Grouting reinforcement device for roadway broken surrounding rock |
-
2007
- 2007-10-16 CN CN 200710175927 patent/CN100575615C/en active Active
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| Publication number | Publication date |
|---|---|
| CN101148877A (en) | 2008-03-26 |
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