CN203335102U - Multi-section steel pipe dislocation type shearing anchor rod - Google Patents
Multi-section steel pipe dislocation type shearing anchor rod Download PDFInfo
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- CN203335102U CN203335102U CN201320246429XU CN201320246429U CN203335102U CN 203335102 U CN203335102 U CN 203335102U CN 201320246429X U CN201320246429X U CN 201320246429XU CN 201320246429 U CN201320246429 U CN 201320246429U CN 203335102 U CN203335102 U CN 203335102U
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- steel pipe
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- steel strand
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Abstract
The utility model discloses a multi-section steel pipe dislocation type shearing anchor rod, which comprises a stranded steel wire, wherein a pallet and a fastened nut are arranged on the front end head of the stranded steel wire, a plurality of steel pipes are sleeved on most of the line segments which are close to the front end head of the stranded steel wire, and the inner diameters of the steel pipes are bigger than the diameter of the stranded steel wire. The multi-section steel pipe dislocation type shearing anchor rod is fixed in a terrane, when the terrane moves to produce shearing action to the multi-section steel pipe dislocation type shearing anchor rod, the steel pipes outside the multi-section steel pipe dislocation type shearing anchor rod deform and dislocate firstly, thereby consuming shearing force of a part of terrane, and being suitable for extrusion and dislocation of the multi-section steel pipe dislocation type shearing anchor rod in a high tectonic stress area.
Description
Technical field
The utility model relates to a kind of anchor pole, especially relates to a kind of Bolt that is applicable to opposing shearing force in underground space supporting.
Background technology
Bolt support is one of main support form in underground construction, anchor pole can bear the tensile stress brought rock stratum, shear stress etc. in Bracing Process, the design of anchor pole is intended to bear tensile stress mostly, but underground construction, especially in the industry of digging up mine, due to the movement of rock stratum, can produce shear stress to anchor pole unavoidably, so the design shear anchor arm is very significant to the effective support of underground engineering.
The Chinese patent that application number is 200320120629.7 discloses a kind of flexible shear anchor arm, the body of rod of this flexible shear anchor arm adopts steel strand, be bited into one with anchor tail steel tube extrusion, its adhesion stress surpasses the steel strand Fracture Force, the extruding anchor fixing structure of outer broken end takes full advantage of the anti-shear performance of steel strand, adapts to the extruding changing of the relative positions of the anchor pole in high tectonic stress district.This flexible roof bolt self is flexible, coiling, and length can not be limited, and can require flexible processing according to design of its support.Yet the diameter less of this flexible roof bolt, shear behavior is Shortcomings also, awaits further raising.
The utility model content
But the purpose of this utility model is to provide a kind of plurality of sections of steel pipes dislocation type shear anchor arm, it relies on the changing of the relative positions and the intrinsic shear behavior of steel strand self between pipe deformation, plurality of sections of steel pipes to improve shear behavior.
The technical solution that the utility model adopts is:
But a kind of plurality of sections of steel pipes dislocation type shear anchor arm, it comprises steel strand, front end place at steel strand is provided with pallet and clamp nut, at steel strand, near cover on most of line segment of its front end, some sections steel pipes is arranged, and the internal diameter of steel pipe is greater than the diameter of steel strand.
Preferably, at the remainder line segment place of close its end head of steel strand, several reinforcements are set.
Preferably, described reinforcement is stiffnut.
Preferably, described steel pipe joins successively, at the mouth of pipe place of outermost steel pipe, is provided with block piece.
Preferably, in described some sections steel pipes, one section steel pipe of the most close steel strand front end is close to pallet, one section steel pipe of the most close steel strand end head replaces with a reducing steel tube, and an internal diameter of described reducing steel tube is identical with pipe diameter, and the other end internal diameter is identical with the steel strand diameter.
Useful technique effect of the present utility model is:
The utility model shear anchor arm is anchored in rock stratum, and when strata movement produces shear action to anchor pole, the steel pipe in the anchor pole outside first is out of shape the changing of the relative positions, thereby consumes the shearing force of a part of rock stratum, adapts to the extruding changing of the relative positions of the anchor pole in high tectonic stress district.
The accompanying drawing explanation
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail:
The structural representation that Fig. 1 is a kind of embodiment of the utility model.
In figure: 1-steel pipe, 2-steel strand, 3-pallet, 4-clamp nut, 5-stiffnut, 6-reducing steel tube.
The specific embodiment
But a kind of plurality of sections of steel pipes dislocation type shear anchor arm, it comprises steel strand, and these steel strand select the mining industry supporting to get final product with steel strand, and himself is flexible, has stronger shear behavior.Front end place at steel strand is provided with pallet and clamp nut, and pallet and clamp nut are the kind that common bolt is used, and the adhesion stress of itself and steel strand will surpass the Fracture Force of steel strand.Near cover on most of line segment of its front end, some sections steel pipes are arranged at steel strand, the internal diameter of steel pipe is greater than the diameter of steel strand.The utility model shear anchor arm is anchored in rock stratum, and when strata movement produces shear action to anchor pole, the steel pipe in the anchor pole outside first is out of shape the changing of the relative positions, thereby consumes the shearing force of a part of rock stratum.
As to further improvement of the utility model, at the remainder line segment place of close its end head of steel strand, several reinforcements are set.Reinforcement plays the effect that strengthens anchor pole tension pull out force when anchor rod anchored.The structure of reinforcement can carry out routine to be selected, and is preferably stiffnut, and the interior circular diameter of this stiffnut is identical with the diameter of steel strand, can just be enclosed within the position of steel strand near its end head.
Further, described some sections steel pipes join successively, and are provided with block piece at the mouth of pipe place of outermost steel pipe.Block piece can be selected the structures such as circular baffle plate of mouth of pipe shutoff.This setting can prevent that when anchor rod anchored, Anchor Agent enters the space between steel pipe and steel strand.In the utility model, in order to prevent when anchor rod anchored, Anchor Agent enters the space between steel pipe and steel strand, preferably arrange as follows: in described some sections steel pipes, one section steel pipe of the most close steel strand front end is close to pallet, one section steel pipe of the most close steel strand end head replaces with a reducing steel tube, an internal diameter of described reducing steel tube is identical with pipe diameter, and the other end internal diameter is identical with the steel strand diameter.
Below in conjunction with accompanying drawing, a kind of preferred embodiment of the present utility model is described:
As shown in Figure 1, but a kind of plurality of sections of steel pipes dislocation type shear anchor arm, and it comprises steel strand 2, is provided with several stiffnuts 5 on the end segment of steel strand 2.Residue section outer race at steel strand 2 has a reducing steel tube 6 and several steel pipes 1.The internal diameter of steel pipe 1 is greater than the diameter of the steel strand 2 of internal package, between steel pipe 1 and steel strand 2, leaves certain space.An internal diameter of reducing steel tube 6 is identical with the internal diameter of steel pipe 1, and the other end internal diameter is identical with the diameter of steel strand 2, can be enclosed within steel strand 2 outsides and together with plurality of sections of steel pipes, away from anchor pole end head.Be disposed with pallet 3 and clamp nut 4 at the front end place of steel strand 2.
The utility model shear anchor arm is anchored in rock stratum, and when strata movement produces shear action to anchor pole, the steel pipe in the anchor pole outside first is out of shape the changing of the relative positions, thereby consumes the shearing force of a part of rock stratum, adapts to the extruding changing of the relative positions of the anchor pole in high tectonic stress district.And this shear anchor arm length can not be limited, can require flexible processing according to design of its support, adapt to wider reinforcing requirement, avoid or reduce the anchor pole secondary and construct, meet the roadway support requirement, greatly reduce the integrated cost of bolt support, realize the comprehensive requirement of saving of material.
It should be noted that, under the instruction of this manual, any equivalents that those skilled in the art have done, or obvious variant, all should be within protection domain of the present utility model.
Claims (5)
1. a but plurality of sections of steel pipes dislocation type shear anchor arm, it is characterized in that: comprise steel strand, front end place at steel strand is provided with pallet and clamp nut, at steel strand, near cover on most of line segment of its front end, some sections steel pipes is arranged, and the internal diameter of steel pipe is greater than the diameter of steel strand.
2. but a kind of plurality of sections of steel pipes dislocation type shear anchor arm according to claim 1 is characterized in that: at steel strand, near the remainder line segment place of its end head, several reinforcements are set.
3. but a kind of plurality of sections of steel pipes dislocation type shear anchor arm according to claim 1, it is characterized in that: described reinforcement is stiffnut.
4. but according to claim 1,2 or 3 described a kind of plurality of sections of steel pipes dislocation type shear anchor arms, it is characterized in that: described steel pipe joins successively, at the mouth of pipe place of outermost steel pipe, is provided with block piece.
5. but according to the described a kind of plurality of sections of steel pipes dislocation type shear anchor arm of claim 2 or 3, it is characterized in that: in described some sections steel pipes, one section steel pipe of the most close steel strand front end is close to pallet, one section steel pipe of the most close steel strand end head replaces with a reducing steel tube, an internal diameter of described reducing steel tube is identical with pipe diameter, and the other end internal diameter is identical with the steel strand diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320246429XU CN203335102U (en) | 2013-05-09 | 2013-05-09 | Multi-section steel pipe dislocation type shearing anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320246429XU CN203335102U (en) | 2013-05-09 | 2013-05-09 | Multi-section steel pipe dislocation type shearing anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335102U true CN203335102U (en) | 2013-12-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320246429XU Expired - Fee Related CN203335102U (en) | 2013-05-09 | 2013-05-09 | Multi-section steel pipe dislocation type shearing anchor rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN203335102U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057842A (en) * | 2018-09-20 | 2018-12-21 | 河南理工大学 | It cuts drawing conversion flexibility and allows pressure shear anchor arm and its construction supporting method |
| CN111945722A (en) * | 2020-07-31 | 2020-11-17 | 河海大学 | Multi-section series connection anti-seismic anchor rod for bridge and use method |
-
2013
- 2013-05-09 CN CN201320246429XU patent/CN203335102U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057842A (en) * | 2018-09-20 | 2018-12-21 | 河南理工大学 | It cuts drawing conversion flexibility and allows pressure shear anchor arm and its construction supporting method |
| CN109057842B (en) * | 2018-09-20 | 2024-01-26 | 河南理工大学 | Shearing-pulling conversion flexible yielding shearing-resistant anchor rod and construction supporting method thereof |
| CN111945722A (en) * | 2020-07-31 | 2020-11-17 | 河海大学 | Multi-section series connection anti-seismic anchor rod for bridge and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20140509 |