CN202899130U - Yield anchoring cable - Google Patents
Yield anchoring cable Download PDFInfo
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- CN202899130U CN202899130U CN 201220593574 CN201220593574U CN202899130U CN 202899130 U CN202899130 U CN 202899130U CN 201220593574 CN201220593574 CN 201220593574 CN 201220593574 U CN201220593574 U CN 201220593574U CN 202899130 U CN202899130 U CN 202899130U
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- cable body
- cable
- anchor
- allows
- sleeve
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Abstract
The utility model discloses a yield anchoring cable which comprises a cable body, a yield anchoring tool, a locking stop part fixed at the head of the cable body, and a support base plate sleeved on the cable body. The cable body is separated into an outer anchoring section and an inner anchoring section by the support base plate. The yield anchoring tool is an extrusion sleeve which wraps the cable body. The inner wall face of the extrusion sleeve is meshed with the outer surface of the cable body. Anchoring between the extrusion sleeve and the cable body is achieved by wrapping resistance between the two. During relative slide of the extrusion sleeve and the cable body, damage of the cable body is avoided, and accordingly base material performance of the cable body is guaranteed effectively. In addition, the yield anchoring cable is simple in structure, low in manufacturing cost, and convenient in construction.
Description
Technical field
The utility model relates to ground anchorage and engineering support technical field, relates in particular to a kind of pressure anchor cable that allows.
Background technology
Along with the development of Anchorage Technology, and the concern of high slope, underground construction and the mining tunnel support engineering in and Areas of High Earthquake Intensity area heavily stressed to earth formation deep, developed the ground tackle that can adapt to stratum deformation.Surrender anchor pole or anchor cable device are a kind ofly can keep predetermined anchored force and can form again anchor pole or the anchor cable that certain " distortion " amount is eliminated vibration energy or adaptive deformation, are also referred to as surrender anchor pole (rope), constant-resistance is out of shape anchor pole (rope), pressure-relieving achor bar (rope).In recent years, various pressure-relieving achor bars with constant-resistance distortion constantly are developed and are applied in side slope, underground construction or the mining tunnel support engineering, and to solve such as dynamic impact problem loads such as rock burst, earthquakes, perhaps weak surrounding rock causes the problem of stratum large deformation.
Single type allows the pressure anchor cable, document is polytype openly, but main adopt to allow press anchorage installation when anchor cable makes that the anchor cable body is stressed to be reached predetermined allowing and press load, allow and press that ground tackle is relative with cable body to allow the compressive strain function along the formation of sliding of anchor cable length direction, mainly comprise following several structure:
It is wherein a kind of that relatively layer is different for the friction sleeve, cable body realizes allowing compressive strain along anchor cable length direction straight skidding, such as Chinese patent application 201110061360.9 and 201110061303.0 disclosed friction sleeve cartridge type distortion anchor cables, Chinese patent 200920003238.4 disclosed high-drag constant-resistance significantly allow presses allowing of anchor cable and US Patent No. 5882148, Chinese patent application 201010196197.2 disclosed hollow sections and solid reinforcing bar combination press anchor cable etc., structure relative complex.
Another presses anchor set to maintain static for allowing, the anchor cable body is by allowing pressure device along the longitudinal sliding motion of anchor cable length direction, realization allows the compressive strain function, such as Chinese patent 200580031585.2 disclosed elongate element tensioning support members, disclosed the allowing of Chinese patent 200820104437.X pressed ground tackle etc., the said goods all can realize that to a certain extent anchoring allows pressure, thus the adverse effect that minimizing brings engineering because of the distortion of country rock body.
The third allows and presses anchor cable is that anchor section position is installed and allowed pressure device anchor cable hole outside, allows the pressure pipe that allows that press-fits the similar sphere of hollow that is set to two connection or Lantern, and is set between outer anchor section pallet and the locking piece (anchor cable locking ground tackle).Such as Chinese patent application 200910014402.6 disclosed high-strength pretightening force compressible glass fibre reinforced plastic anchor cables, Chinese patent 20082003745.9 is disclosed to be allowed and presses anchor cable and Chinese patent 2009200331057.2 disclosed anchor cables allow to press member etc.Compression and flattening when allowing pressure pipe surpass yield load during anchor cable work, pallet is moved outward, cable body is to the slippage of rock mass direction, realization allows the function of compressive strain, this type of anchor cable weak point is to allow the pressure pipe distortion large not, usually at 50～60mm, substantially use in the mining tunnel engineering, but (can't meet the demands in the deflection 300～500mm) in large deformation or large chamber support.
The utility model content
The utility model provides a kind of cable body that can not make impaired, and that can effectively protect cable body mother metal performance allows the pressure anchor cable.
A kind of pressure anchor cable that allows, comprise cable body, allow the pressure ground tackle, be fixed on the lock piece of cable body head, and be set on the bearing plate that on the cable body cable body is divided into outer anchor section and interior anchor section, describedly allow to press ground tackle be the extruded sleeve that bonds cable body and internal face and the interlock of cable body external surface phase.
Described extruded sleeve is assemblied on the cable body by the following method:
The steel pipe of one section inner wall smooth is set on the cable body, then pushes steel pipe, after the extrusion modling, the steel pipe axial elongation, simultaneously internal face and the complete interlock of cable body external surface forms extruded sleeve.Described cable body external surface generally has lines, because cable body hardness is greater than steel pipe hardness, steel pipe inner wall can form the lines that coincide with the cable body external surface in extrusion process, thereby realizes interlock.When the stressed load of cable body greater than between cable body and the extruded sleeve bond resistance the time, the relative cable body generation of extruded sleeve slippage.
Preferably, described cable body is steel strand and since steel strand everywhere lines be homogeneous phase with, in relative slipping, make the constant resistance of generation between extruded sleeve and the cable body.
Described allowing presses anchor cable according to extruded sleeve position difference following two kinds of structures can be arranged:
The first kind: described extruded sleeve is located on the outer anchor section of cable body, namely allows press ground tackle to be positioned at outside the anchor hole.
Preferably, the afterbody of described cable body is equipped with the retaining assistant, shell anchorage head or resin explosive roll stirring-head rise, the purpose of selecting rise shell anchorage head and retaining assistant are installed is the mechanical anchor of realization anchor cable and prevents that anchor cable from withdrawing from anchor hole, and the resin explosive roll stirring-head only is to use when adopting resin explosive roll as Anchor Agent.
Allow the pressure slippage for what realize extruded sleeve, the overwhelming majority of anchor cable in anchor hole can not bond with Anchor Agent, therefore preferred, the interior anchor section part of described cable body is provided with disrance sleeve or is coated with separation layer, described disrance sleeve or separation layer originate in bearing plate, the length of separation layer or disrance sleeve is preferably 1/2～3/4 of the interior anchor segment length of cable body, and described disrance sleeve is preferably the PE sleeve pipe that consists of non-bending steel cable with cable body.
Equations of The Second Kind: described extruded sleeve is located on the interior anchor section of cable body, and described cable body afterbody is equipped with the block piece that stops the excessive slippage of extruded sleeve, and namely extruded sleeve is located in the anchor hole.
Block piece can adopt various structures, the following structure of preferred employing: described block piece comprises the fixed cover of taper, the less end inner chamber of fixed cover diameter is stretched in cable body tail end end, one cone-shaped nail inserts the cable body center from the fixed cover other end, push fixedly cable body tail end end with fixed cover, this Standard is convenient, and barrier properties is stable.
In order to stop cable body and Anchor Agent bonding in the anchor hole, except the extruded sleeve position, all the other are provided with the interior anchor section of cable body disrance sleeve everywhere or apply separation layer equally.
Preferably, rise shell anchorage head or retaining assistant are installed on the cable body between described extruded sleeve and the bearing plate, described shell anchorage head or the close described extruded sleeve of retaining assistant of rising, the purpose that this structure is set is same as above.
With respect to prior art, the utility model beneficial effect is:
(1) the utility model allows and presses anchor cable structure simple, low cost of manufacture, and easy construction.
(2) anchorage effect between extruded sleeve and the cable body be by between the resistance that bonds realize, when doing relative slippage, can to the cable body injury, effectively not guarantee the mother metal performance of cable body.
(3) supporting under the Large Deformation Support under the adaptation condition of high ground stress and rock burst, the earthquake shock load situation.
Description of drawings
Fig. 1 is that embodiment 1 allows the structural representation of pressing anchor cable; (a) the cable body afterbody is installed the retaining assistant; (b) the cable body afterbody is installed the shell anchorage head that rises; (c) the cable body afterbody is installed the resin explosive roll agitator.
Fig. 2 is that embodiment 2 allows the structural representation of pressing anchor cable; (a) for cable body the retaining assistant is installed; (b) cable body is installed the shell anchorage head that rises.
Fig. 3 allows the A-A sectional drawing of pressing anchor cable shown in Fig. 2 (a).
Fig. 4 allows the B-B sectional drawing of pressing anchor cable shown in Fig. 2 (a).
Fig. 5 allows the C-C sectional drawing of pressing anchor cable shown in Fig. 2 (a).
Fig. 6 is the structural representation of cone nail in the block piece shown in Figure 5.
Fig. 7 is the sectional drawing of extruded sleeve and part, cable body place.
Fig. 8 is that embodiment 1 allows and presses the anchor cable construction structural representation; (a) be the extruded sleeve slippage before, (b) be the extruded sleeve slippage after.
The specific embodiment
As shown in Figure 1, a kind of pressure anchor cable that allows, comprise cable body 2, allow and press ground tackle, be fixed on the lock piece 4 of cable body 2 heads and be set on bearing plate 3 on the cable body 2, support backing plate 3 cable body 2 is divided into outer anchor section and interior anchor section two parts, press the position difference of ground tackle that as depicted in figs. 1 and 2 two kinds of embodiments are arranged according to allowing.The utility model allows presses anchor device structure as shown in Figure 7, and it is an extruded sleeve 1 that bonds on cable body 2, the complete interlock of external surface of this extruded sleeve 1 internal face and cable body 2.
Extruded sleeve can assemble in such a way: the steel pipe socket that one section internal face is smooth is on cable body 2 first, then the facility with vertically extruding push steel pipe, after the extrusion modling, the external diameter of steel pipe diminish and length along cable body 2 axial elongations, because what the present embodiment cable body was selected is steel strand, in extrusion process, the steel pipe inner wall face forms the lines with the interlock of steel strand external surface phase.Realize this assembling, the hardness of steel pipe should be less than the hardness of cable body 2, and steel pipe is preferably selected seamless steel pipe.
The present embodiment steel pipe specification is: external diameter 34mm, wall thickness 9mm, length 60mm, and No. 45, material is through modified; Steel strand are external diameter 15.24mm, Rf=1860MPa level; Steel pipe with 50 tons of extruder extrusion modlings after, steel pipe sizes becomes: external diameter 30mm, length 70mm, through test slippage occuring allows and press load P=105KN, slip length 400mm allows and presses load stable, substantially remains unchanged.
Shown in Fig. 1 (a), (b), (c), extruded sleeve 1 is located at the outer anchor section of cable body 2, namely on the cable body 2 between lock piece 4 and the bearing plate 3.Allow the pressure slippage for what realize anchor cable, cable body 2 interior anchor sections can not bond with Anchor Agent near the part of bearing plate, therefore this part of anchor section is established disrance sleeve or is applied separation layer in cable body, disrance sleeve can be the PE sleeve pipe that consists of non-bending steel cable with cable body, and insolated layer materials can be industry waxing etc.In order to stop anchor cable to withdraw from anchor hole, shown in Fig. 1 (a), cable body 2 afterbodys are equipped with retaining assistant 50, and in order to provide mechanical anchor to anchor cable, shown in Fig. 1 (b), cable body 2 afterbodys are equipped with the shell anchorage head 51 that rises.If adopt resin explosive roll as Anchor Agent, shown in Fig. 1 (c), cable body 2 afterbodys are installed resin explosive roll stirring-head 52.
As shown in Figure 2, the utility model allows the another kind of embodiment of pressing anchor cable, extruded sleeve 1 is located at the interior anchor section of cable body 2, this anchor cable is in order to stop extruded sleeve 1 excessive slippage, is provided with block piece 7 at the tail end of cable body 2, as shown in Figure 5, the present embodiment block piece spare 7 comprises fixed cover 70 and the cone-shaped nail as shown in Figure 6 71 of taper, the tail end of cable body 2 inserts into the inner the chamber from the less end of fixed cover 70 diameters, and cone-shaped nail 71 inserts the center of cable body 2 from the other end, and the steel wire extruding that consists of cable body 2 is fixing.Certainly the utility model also can adopt other block piece, such as static fixing clip etc.
Same reason bonds for fear of interior anchor section and Anchor Agent, and except extruded sleeve 1 position, all the other all are provided with interior anchor section disrance sleeve everywhere or apply separation layer, and disrance sleeve and coat can adopt embodiment 1 described material.In addition in order to stop anchor cable to withdraw from anchor hole, cable body 2 between bearing plate 3 and extruded sleeve 1 arranges and moves back only assistant 50, in order to realize mechanical anchor, at the cable body 2 between bearing plate 3 and extruded sleeve 1 expansion shell type anchoring head 51 is set, move back only that assistant 50 and expansion shell type anchoring head 51 are conventional components, they are all near extruded sleeve 1 setting.
Allow take the first and to press anchor cable as example, the utility model allows presses anchor cable construction method and anchor pole operating principle as follows:
Shown in Fig. 8 (a), at first in 101 borings of stratum end face, then whole interior anchor section is inserted in the anchor hole 100, namely finish installation behind the filling Anchor Agent, wherein the cable body length between extruded sleeve 1 and the lock piece 4 is maximum skidding distance 60; Shown in Fig. 8 (b), after the stratum deformed and crack 200 occurs, cable body 2 is stressed to surpass resistance between it and the extruded sleeve 1, extruded sleeve 1 relative cable body slippage one segment distance 61, until cable body is stressed during less than the resistance between it and the extruded sleeve 1, stop slippage.The operating principle of other embodiment and this embodiment are similar, are not repeated herein.
Claims (9)
1. one kind allows the pressure anchor cable, comprises cable body, allows the pressure ground tackle, be fixed on the lock piece of cable body head, and be set on the bearing plate that on the cable body cable body is divided into outer anchor section and interior anchor section, and it is characterized in that, describedly allow to press ground tackle be the extruded sleeve that bonds cable body and internal face and the interlock of cable body external surface phase.
2. the pressure anchor cable that allows as claimed in claim 1 is characterized in that, described cable body is steel strand.
3. the pressure anchor cable that allows as claimed in claim 1 is characterized in that, described extruded sleeve is located on the outer anchor section of cable body.
4. the pressure anchor cable that allows as claimed in claim 3 is characterized in that, the afterbody of described cable body is equipped with the retaining assistant, shell anchorage head or resin explosive roll stirring-head rise.
5. the pressure anchor cable that allows as claimed in claim 3 is characterized in that, the interior anchor section part of described cable body is provided with disrance sleeve or is coated with separation layer, and described disrance sleeve or separation layer originate in bearing plate.
6. the pressure anchor cable that allows as claimed in claim 1 is characterized in that, described extruded sleeve is located on the interior anchor section of cable body, and described cable body afterbody is equipped with the block piece that stops the excessive slippage of extruded sleeve.
7. the pressure anchor cable that allows as claimed in claim 6, it is characterized in that, described block piece comprises the fixed cover of taper, and the less end inner chamber of fixed cover diameter is stretched in cable body tail end end, one cone-shaped nail inserts the cable body center from the fixed cover other end, pushes fixedly cable body tail end end with fixed cover.
8. the pressure anchor cable that allows as claimed in claim 6 is characterized in that, except the extruded sleeve position, all the other are provided with the interior anchor section of cable body disrance sleeve everywhere or apply separation layer.
9. the pressure anchor cable that allows as claimed in claim 6 is characterized in that, rise shell anchorage head or retaining assistant are installed on the cable body between described extruded sleeve and the bearing plate, described shell anchorage head or the close described extruded sleeve of retaining assistant of rising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220593574 CN202899130U (en) | 2012-11-12 | 2012-11-12 | Yield anchoring cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220593574 CN202899130U (en) | 2012-11-12 | 2012-11-12 | Yield anchoring cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202899130U true CN202899130U (en) | 2013-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220593574 Expired - Fee Related CN202899130U (en) | 2012-11-12 | 2012-11-12 | Yield anchoring cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202899130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953377A (en) * | 2012-11-12 | 2013-03-06 | 杭州图强工程材料有限公司 | Pressure-release anchor cable |
| CN104594348A (en) * | 2015-01-27 | 2015-05-06 | 安徽同济建设集团有限责任公司 | Expanded head capsule type anchor rod and construction method thereof |
-
2012
- 2012-11-12 CN CN 201220593574 patent/CN202899130U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953377A (en) * | 2012-11-12 | 2013-03-06 | 杭州图强工程材料有限公司 | Pressure-release anchor cable |
| CN102953377B (en) * | 2012-11-12 | 2015-04-01 | 杭州图强工程材料有限公司 | Pressure-release anchor cable |
| CN104594348A (en) * | 2015-01-27 | 2015-05-06 | 安徽同济建设集团有限责任公司 | Expanded head capsule type anchor rod and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20211112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |