CN102536279B - Elastic and flexible anchor rod - Google Patents
Elastic and flexible anchor rod Download PDFInfo
- Publication number
- CN102536279B CN102536279B CN201010607683.9A CN201010607683A CN102536279B CN 102536279 B CN102536279 B CN 102536279B CN 201010607683 A CN201010607683 A CN 201010607683A CN 102536279 B CN102536279 B CN 102536279B
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- elastic
- rod
- anchor pole
- flexible device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention provides an elastic and flexible anchor rod, comprising a locking end, a supporting plate, a rod body and further an elastic and flexible device, wherein the elastic and flexible device is sleeved on the rod body and is arranged between the locking end and the supporting plate. According to such anchor rod, the elastic and flexible device is arranged between the locking end and the supporting plate, so that the anchor rod nearly cannot be deformed in a normal situation, namely, under a normal pretightening force, and only when a pulling force of the anchor rod is instantly increased due to a certain external force, the elastic and flexible device can be deformed, thereby protecting the anchor rod to a certain extent. In addition, the flexible device can adopt a form of connecting two steel pipes in series which are easily available on site, so that the flexible device is convenient to process and mount and can meet the need of timely construction. The rod body of the anchor rod is coated with asphalt, so that on one hand, the friction force is reduced favorably, and on the other hand, the anchor rod is protected from being corroded. Therefore, the service life of the anchor rod is prolonged.
Description
Technical field
The present invention relates to a kind of support apparatus, be specially a kind of anchor pole compliant member, that can produce certain stroke of bullet that has.
Background technology
A kind of support form using is the earliest to build arch supporting, and this support form construction labour intensity is large, efficiency is low, construction costs is high, the amount of overhauling is large, and down-hole is substantially superseded now.In rock tunnel, tunnel and chamber support, it is one of the most frequently used, most economical method that anchor pole coordinates the supportings such as net, beam now.Bolt support is except having that labour intensity is low, efficiency is high, construction costs is low and engineering is overhauled the advantage such as few, the more important thing is that it is combined as a whole supporting and protection structure and country rock, can give full play to the supporting capacity that country rock self is pressed over the ground, improve the stress of country rock, be conducive to the monolithic stability of country rock.
Because traditional anchor pole extensional rigidity is large, there is no enough pressure buffer performances, it is larger that press on ground, rock mass deformation to a certain extent time often anchor pole and country rock pull, or anchor pole drawn bad, large deformation that can not suitable for surrounding rock.These environment have: soft rock, the earth nip territory, bump, traditional bolt support has larger defect.
In order to give full play to the supporting capacity of country rock self, on ground, press anchor pole when very large to need elder generation " allow ", provide a larger distortion, especially when pressing suddenly or bump occurs.Along with further applying of technology, scalable anchor pole progresses into people's sight line.Anchor pole and traditional anchor pole that this support pattern adopts are different.There is a telescopic mechanism, make anchor pole be subject to can produce in this part certain dilatation amount after pulling force, make it the distortion of suitable for surrounding rock.This is the place that more traditional anchor pole makes moderate progress.
But above-mentioned adopted scalable anchor pole is a kind of specific anchor pole, mainly at anchor pole middle part, improve, there is pipe seam formula, carve piece formula etc., these anchor poles have two large drawbacks in application: the one, and stretching device has inevitably reduced anchor pole useful cross section size, reduced the intensity of anchor pole own, anchor pole consumption is strengthened, and need special parameter during design; The 2nd, the constructional difficulties of this anchor pole, anchor pole middle part must be thicker than common bolt, when boring, just need to strengthen boring aperture, sometimes even needs reducing, both increased work and installation strength, is not easy again anchoring.
Summary of the invention
The application's technical problem to be solved:
Existing telescopic anchor pole is all a kind of specific anchor pole, need special manufacture, cannot directly improve and obtain from existing common bolt, thereby the application proposes a kind of flexible roof bolt, by existing anchor pole is simply improved, common anchor pole is adapted as to telescopic anchor pole, makes common anchor pole there is certain stroke, can well bear large pressure of moment.This anchor structure is simple, has also reduced cost simultaneously.
The application is the technical scheme that solves the problems of the technologies described above proposition:
For solving the problems of the technologies described above, the application proposes a kind of bullet flexible roof bolt, comprise locking end, supporting plate, the body of rod, in addition, also comprise that plays a flexible apparatus, this bullet flexible apparatus is enclosed within on the body of rod, can compressive strain when pressing suddenly, show as within the specific limits elastic deformation, surpass rear generation plastic strain, between locking end and supporting plate.
Further, in such scheme, described bullet flexible apparatus can be steel pipe or spring body, and steel pipe is because himself characteristic not only can be born larger pressure, and can produce certain elastic potential energy at suitable pressures, when deflection is large, show as flexibility or plastic strain; Spring body can, with the good elastic buffer pressure of moment, utilize elastic deformation to produce extra amount of contraction.
Further, in such scheme, described flexible apparatus is the two joint steel pipes that are cascaded.Mutual extruding between steel pipe can absorb instantaneous pressure preferably, meanwhile, produces plastic strain when pressure increases to the yield strength of steel pipe, is out of shape with tunnel simultaneously, and the steel pipe of two joint series connection can produce larger deflection.
Further, in such scheme, the surface of described anchor rod body lower end scribbles one deck pitch.Pitch both can reduce the frictional force between wall body and the body of rod, can reduce the degree that anchor pole is corroded again, played the effect of protection anchor pole.
The obtained beneficial effect of the application is:
This plays flexible roof bolt, by add a bullet flexible apparatus between locking end and supporting plate, thereby make this anchor pole in normal situation, in normal pretightning force, can deform hardly, only have when causing rockbolt stress moment to become large because of external force, flexible apparatus just can produce distortion, and anchor pole is not destroyed when being subject to large type suddenly, thereby has improved the safety of supporting.
In addition, owing to playing flexible apparatus and can adopt the form of the two or more steel pipes of series connection, and steel pipe in down-hole or building site more common, be convenient to the needs of construction in time.
Anchor rod body coat pitch, be conducive to reduce on the one hand the frictional force of anchor pole free end and hole wall, protect on the other hand anchor pole to be corroded less, the application life of prolongation anchor pole.
Accompanying drawing explanation
Fig. 1 is the assembly drawing of the embodiment of the present invention;
Fig. 2 is the assembly drawing of an alternative embodiment of the invention;
Fig. 3 is the sectional view of anchor rod body.
1, locking end; 2, supporting plate; 3, the body of rod; 4, flexible apparatus; 5, pitch;
The specific embodiment
Fig. 1 is a kind of embodiment of the present invention.In Fig. 1, described bullet flexible apparatus 4 is enclosed within on the body of rod 3, and between locking end 1 and supporting plate 2, this flexible apparatus can be steel pipe or spring body.Under normal pretightning force, flexible apparatus can deform hardly; When moment is subject to a certain pressure, flexible apparatus, because the extruding of locking end and supporting plate produces distortion, has cushioned the stressed of anchor pole, thereby has protected to a certain extent anchor pole.
Fig. 2 is an alternative embodiment of the invention, flexible apparatus has adopted the form of two steel pipes of connecting, owing to being easy to obtain waste and old steel pipe on building site, so not only reduced cost, and because the extruding of the steel pipe self of connecting also can be offset a part of pressure, therefore can bear larger instantaneous pressure.
Fig. 3 is the sectional view of the body of rod, and pitching on the body of rod is conducive to reduce friction on the one hand, protects on the other hand anchor pole to be corroded less.Thereby extend the application life of anchor pole.
Claims (2)
1. one kind plays flexible roof bolt, comprise locking end (1), supporting plate (2), the body of rod (3), also comprise that plays a flexible apparatus (4), it is upper that this flexible apparatus (4) is enclosed within the body of rod (3), and be positioned between locking end (1) and supporting plate (2); It is characterized in that: the two joint steel pipes of described bullet flexible apparatus (4) for being cascaded along outer wall of steel pipe, and the central axis of described steel pipe is vertical with the described body of rod (3).
2. bullet flexible roof bolt as claimed in claim 1, is characterized in that, the surface of described anchor rod body (3) lower end scribbles one deck pitch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010607683.9A CN102536279B (en) | 2010-12-28 | 2010-12-28 | Elastic and flexible anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010607683.9A CN102536279B (en) | 2010-12-28 | 2010-12-28 | Elastic and flexible anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536279A CN102536279A (en) | 2012-07-04 |
| CN102536279B true CN102536279B (en) | 2014-03-12 |
Family
ID=46344152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010607683.9A Expired - Fee Related CN102536279B (en) | 2010-12-28 | 2010-12-28 | Elastic and flexible anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536279B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950552A (en) * | 1961-08-22 | 1964-02-26 | William George Burton Mcclean | Improvements in or relating to visual warning devices for indicating loss of tensionin bolts |
| SU1384782A1 (en) * | 1986-09-09 | 1988-03-30 | А. И. Степанов | Roof bolt |
| CN2830644Y (en) * | 2004-06-03 | 2006-10-25 | 中国科学院武汉岩土力学研究所 | Controllable prestressed super-strength anchor arm |
| CN201074521Y (en) * | 2007-08-13 | 2008-06-18 | 周玉华 | Anchor pile equipped with compressible means |
| CN201486580U (en) * | 2009-08-12 | 2010-05-26 | 济宁矿安支护材料有限公司 | Controllable pretightening force pressure relief anchor rope |
| CN201934112U (en) * | 2010-12-17 | 2011-08-17 | 孟志强 | Elastic and flexible anchor rod |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725364A (en) * | 2009-11-24 | 2010-06-09 | 中国科学院力学研究所 | Displacement release type anchor head device |
-
2010
- 2010-12-28 CN CN201010607683.9A patent/CN102536279B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950552A (en) * | 1961-08-22 | 1964-02-26 | William George Burton Mcclean | Improvements in or relating to visual warning devices for indicating loss of tensionin bolts |
| SU1384782A1 (en) * | 1986-09-09 | 1988-03-30 | А. И. Степанов | Roof bolt |
| CN2830644Y (en) * | 2004-06-03 | 2006-10-25 | 中国科学院武汉岩土力学研究所 | Controllable prestressed super-strength anchor arm |
| CN201074521Y (en) * | 2007-08-13 | 2008-06-18 | 周玉华 | Anchor pile equipped with compressible means |
| CN201486580U (en) * | 2009-08-12 | 2010-05-26 | 济宁矿安支护材料有限公司 | Controllable pretightening force pressure relief anchor rope |
| CN201934112U (en) * | 2010-12-17 | 2011-08-17 | 孟志强 | Elastic and flexible anchor rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102536279A (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206397530U (en) | A kind of self extending large deformation anchor rod | |
| CN204401822U (en) | A kind of built-in steel plate RPC compound shear wall | |
| CN204898665U (en) | Prestressing force that non -corrosibility ability is high supports crab -bolt | |
| GR1006782B (en) | Hydraulic tension mechanism for construction works | |
| CN204691297U (en) | The Tenon node of the large timber frame of ancient building that a kind of marmem is reinforced | |
| CN210564548U (en) | Tunnel combined supporting system under strong to extremely strong rockburst condition | |
| CN201934112U (en) | Elastic and flexible anchor rod | |
| CN101230579A (en) | Annular bearing bottom plate grillage beam type wind-power generating tower foundation | |
| CN102536279B (en) | Elastic and flexible anchor rod | |
| CN209483384U (en) | A kind of achievable three-dimensional allows the buffering stand of pressure | |
| CN205778957U (en) | A kind of delayed section of support system of workings subject to dy namic pressure | |
| CN102409809A (en) | Concrete-filled steel tube column provided with soft steel bushing and embedded with high-tenacity material and manufacturing method thereof | |
| CN106560562B (en) | A kind of sandwich steel pipe pile foundation in sea | |
| CN211621606U (en) | Construction structure of double-pipe inclined strut supporting foundation pit | |
| CN101586344B (en) | Square pressure-bearing grid-embedded wind power generation power foundation of wind power generating set | |
| CN203114302U (en) | Contractive protective support frame of roadway | |
| CN204728356U (en) | The hardened system of generation power foundation of wind power cyclic group plinth | |
| CN204225096U (en) | The stake of lower-prestressed prefabricated concrete solid | |
| CN202380638U (en) | Concrete filled steel tube column with bottom provided with soft steel sleeve and inside embedded with high toughness materials | |
| CN207512733U (en) | A kind of pretensioned prestressing high-performance concrete pipe pile | |
| CN102518459B (en) | High-strength anchor rope steel channel beam capable of yielding automatically for deep well coal roadways | |
| CN101935999B (en) | Front leaning-resistance device for forced ramming device | |
| CN104389306A (en) | Low-prestress prefabricated concrete solid pile | |
| CN215173146U (en) | Water supply and drainage pipeline protection device for building construction | |
| CN205503369U (en) | Embedded prestressed concrete wind power tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI UNIVERSITY OF ENGINEERING Free format text: FORMER OWNER: MENG ZHIQIANG Effective date: 20140527 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100083 CHAOYANG, BEIJING TO: 056038 HANDAN, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140527 Address after: 056038 Guangming South Street, Hebei, Handan, No. 199 Patentee after: Hebei University of Engineering Address before: 100083 box office, School of earth ring, University of Science and Technology Beijing, 396 Patentee before: Meng Zhiqiang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20141228 |
|
| EXPY | Termination of patent right or utility model |