CN102213628B - Site testing method for anchoring force of glass fiber reinforced plastic anchor rod - Google Patents
Site testing method for anchoring force of glass fiber reinforced plastic anchor rod Download PDFInfo
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- CN102213628B CN102213628B CN2011100868330A CN201110086833A CN102213628B CN 102213628 B CN102213628 B CN 102213628B CN 2011100868330 A CN2011100868330 A CN 2011100868330A CN 201110086833 A CN201110086833 A CN 201110086833A CN 102213628 B CN102213628 B CN 102213628B
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- metal sleeve
- glass fibre
- hydraulic cylinder
- rod
- fibre reinforced
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Abstract
The invention relates to a site testing method for an anchoring force of a glass fiber reinforced plastic anchor rod, which comprises the steps of: firstly, injecting epoxy resin in a metal sleeve (7), and inserting one end of a glass fiber reinforced plastic anchor rod body to be tested; secondly, injecting cement or anchoring agent in a drilled anchoring rod hole, placing the other end of the glass fiber reinforced plastic anchor rod body (6) in the anchoring rod hole to ensure that the metal sleeve (7) is completely exposed out of the anchoring rod hole; installing a hollow hydraulic cylinder (2) on the metal sleeve (7), fastening the hollow hydraulic cylinder (2) by using a metal nut (3) screwed on the metal sleeve (7), connecting the hollow hydraulic cylinder (2), a pressure meter (5) and a manual pump (3) by using a high-pressure oil pipe; thirdly, pressurizing the hollow hydraulic cylinder (2) by using the manual pump (4) until the anchored glass fiber reinforced plastic anchor rod body (6) is loosened or damaged, recording a pressure and computing a maximum drawing force; and finally, unloading the hollow hydraulic cylinder (2), and resetting. According to the invention, during the testing, the glass fiber reinforced plastic anchor rod body (6) is not easy to extrude and damage, larger drawing force can be borne, and the characteristics of simple operation and accurate testing are obtained.
Description
Technical field
The invention belongs to the anchor pole performance test methods, be specifically related to a kind of on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force.
Background technology
The rock bolting back has at first been used in the Friedens colliery of U.S. Aberschlesin in 1911, has opened the precedent of roadway supported by bolt.Can find out that in world's mining along with adopting the mining methods of band from mobile device more widely, bolt supporting is obtaining more widespread usage.All kinds of in the world at present anchor poles are kind more than 600 nearly.Nearly 2.5 hundred million of annual experiment anchor pole amounts, reinforcing, anti-floating engineering, antidumping engineering, anchor that they are widely used in industrial civil building, tunnel bridge, mine construction, high gradient slope, large underground hole, large-scale arc door gate pier, dam and all kinds of buildingss of the dam foundation draw engineering etc.
Along with the widespread use of anchor pole, anchor rod supporting theory has also obtained further investigation and tremendous development, for the supporting effect of anchor pole provides due theoretical foundation.In bolt supporting, weigh a size that important indicator is an anchor force of its anchoring quality, the anchor force size then is to record through pull-out test.Glass fibre reinforced plastics rockbolts is a kind of novel anchor rod of being processed by compound substance, generally is made up of the fiberglass body of rod, pallet and nut.Glass fibre reinforced plastics rockbolts is different according to the forming technology of the body of rod, can be divided into two kinds basically, and a kind of is that body of rod Direct Production becomes screw thread form; A kind of in addition is to be injection molded into screw thread form at body of rod afterbody, and the glass fibre reinforced plastics rockbolts of these two kinds of shapes all directly links to each other with supporting plastic nut, thereby applies corresponding prestress or carry certain Tunnel Pressure.Glass fibre reinforced plastics rockbolts has good tensile property, and its tensile strength is than taller with the diameter thread steel anchor rod, but glass fibre reinforced plastics rockbolts form by spun glass, its anti-extrusion ability especially a little less than.When carrying out the anchor force pull-out test; Behind traditional ground tackle clamping anchor rod body; Under the effect of ground tackle pressure, the fiberglass body of rod at first receives the ground tackle extruding and destroys, and is difficult to realize the purpose of anchor pole drawing; Therefore be difficult to record the anchor force size of the glass fibre reinforced plastics rockbolts body of rod, can't estimate anchoring quality.
Summary of the invention
The present invention is intended to overcome existing method defective, and the fiberglass body of rod to be tested was difficult for the device being tested squeeze and destroy, can carries than pulling capacity greatly, simple to operate and test the on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force accurately when purpose provided a kind of the test.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: in metal sleeve, fill with earlier epoxy resin; The one end insertion of the fiberglass body of rod to be tested has been filled with in the metal sleeve of epoxy resin, made the glass fibre reinforced plastics rockbolts of test with afterbody band metal sleeve; Inject grout or anchoring agent at the bolthole that is drilled to again; The fiberglass body of rod of the glass fibre reinforced plastics rockbolts of afterbody band metal sleeve packed into inject the bolthole of grout or anchoring agent, make the metal sleeve of the glass fibre reinforced plastics rockbolts of afterbody band metal sleeve all be exposed to outside the bolthole; After grout or anchoring agent are solidified; The hollow hydraulic cylinder is contained on the metal sleeve of glass fibre reinforced plastics rockbolts of afterbody band metal sleeve; Through the fastening hollow hydraulic cylinder of the metal nuts on the precession metal sleeve, connect hollow hydraulic cylinder, tensimeter and manual pump with high-pressure oil pipe; With manual pump the hollow hydraulic cylinder is pressurizeed then, until being taken place loosening or destruction by the fiberglass body of rod of anchoring, the pressure that recording manometer shows also calculates draft, is anchor force; The reversal valve of last rotation manual pump makes the unloading of hollow hydraulic cylinder, resets.
The material of the described fiberglass body of rod is the reinforced plastic glass fibre plastics, and the fiberglass body of rod is that perfect thread or afterbody are screw thread, and the Major Diam of the fiberglass body of rod is 15mm～25mm.
The outside diameter of described metal sleeve is 30mm～50mm, and long is 40cm～60cm, and the cylindrical total length of metal sleeve is that the afterbody of screw thread or metal sleeve is a screw thread; The central through hole inner wall coarse of metal sleeve, through hole internal diameter are 20mm～40mm.
Described metal nuts is a six-sided nut, and the big footpath of the internal thread of metal nuts is with the big footpath of external thread of metal sleeve; The external diameter of metal nuts is 50mm～80mm, highly is 40mm～60mm.
Described epoxy resin is the ethylene oxidic ester based epoxy resin.
Owing to adopt technique scheme: the present invention adopts the epoxy bond metal sleeve at glass fibre reinforced plastics rockbolts body of rod afterbody; Ground tackle directly pushes the fiberglass body of rod and the fiberglass body of rod is destroyed when having avoided pull-out test; Adopt metal nuts and metal sleeve to carry out the traditional anchor clamps of screw engagement replacement; Bearing capacity when having strengthened drawing has also made things convenient for the installation of whole testing device; Adopt the epoxy bond fiberglass body of rod and metal sleeve, increased cohesive strength, the possibility of the fiberglass body of rod and metal sleeve generation bonding failure and slip when having avoided drawing.
So the present invention's fiberglass body of rod to be tested when test is difficult for the device being tested squeeze and destroy, can carries big pulling capacity, has simple to operate, characteristic of accurate test.
Description of drawings
Fig. 1 is a kind of anchor pole of the present invention and drawing instrument mounting structure synoptic diagram;
Fig. 2 is the structural representation of the glass fibre reinforced plastics rockbolts 1 of the afterbody band metal sleeve among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention being done further description, is not the restriction to protection domain.
A kind of on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force.Earlier in metal sleeve 7, fill with epoxy resin, the end insertion of the fiberglass body of rod 6 to be tested has been filled with in the metal sleeve 7 of epoxy resin, make test as shown in Figure 2 glass fibre reinforced plastics rockbolts 1 with afterbody band metal sleeve.Inject grout at the bolthole that is drilled to again, the fiberglass body of rod 6 of the glass fibre reinforced plastics rockbolts 1 of afterbody band metal sleeve is packed into inject the bolthole of grout, the metal sleeve 7 of the glass fibre reinforced plastics rockbolts 1 of afterbody band metal sleeve all is exposed to outside the bolthole.As shown in Figure 1; After treating that grout solidifies; Hollow hydraulic cylinder 2 is contained on the metal sleeve 7 of glass fibre reinforced plastics rockbolts 1 of afterbody band metal sleeve, with fastening hollow hydraulic cylinder 2, connects hollow hydraulic cylinder 2, tensimeter 5 and manual pump 4 with high-pressure oil pipe through the metal nuts on the precession metal sleeve 73.With 2 pressurizations of 4 pairs of hollow hydraulic cylinders of manual pump, until being taken place loosening or destruction by the fiberglass body of rod 6 of anchoring, the pressure that recording manometer 5 shows also calculates draft, is anchor force then; The reversal valve of last rotation manual pump 4 makes 2 unloadings of hollow hydraulic cylinder, resets.
In the present embodiment: the material of the fiberglass body of rod 6 is the reinforced plastic glass fibre plastics, and the fiberglass body of rod 6 is a perfect thread, and the Major Diam of the fiberglass body of rod 6 is 15mm～20mm; The outside diameter of metal sleeve 7 is 30mm～40mm, and long is 40cm～50cm, and the cylindrical total length of metal sleeve 7 is a screw thread, and the central through hole inner wall coarse of metal sleeve 7, through hole internal diameter are 20mm～30mm; Metal nuts 3 is a six-sided nut, and the big footpath of the internal thread of metal nuts 3 is with the big footpath of external thread of metal sleeve; The external diameter of metal nuts 3 is 50mm～70mm, highly is 40mm～50mm.
The described epoxy resin of present embodiment is the ethylene oxidic ester based epoxy resin.
A kind of on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force.In metal sleeve, fill with earlier epoxy resin, the end insertion of the fiberglass body of rod to be tested has been filled with in the metal sleeve of epoxy resin, make test as shown in Figure 2 glass fibre reinforced plastics rockbolts with afterbody band metal sleeve; Inject the anchoring agent at the bolthole that is drilled to again, the fiberglass body of rod 6 of the glass fibre reinforced plastics rockbolts 1 of afterbody band metal sleeve is packed into inject the bolthole of anchoring agent, the metal sleeve 7 of the glass fibre reinforced plastics rockbolts 1 of afterbody band metal sleeve all is exposed to outside the bolthole.After the anchoring agent was solidified, the Installation And Test of proving installation was with embodiment 1.
In the present embodiment: the material of the fiberglass body of rod 6 is the reinforced plastic glass fibre plastics, and the afterbody of the fiberglass body of rod 6 is a screw thread, and the Major Diam of the fiberglass body of rod 6 is 20mm～25mm; The outside diameter of metal sleeve 7 is 40mm～50mm, and long is 50cm～60cm, and the cylindrical afterbody of metal sleeve 7 is a screw thread; The central through hole inner wall coarse of metal sleeve 7, through hole internal diameter are 30mm～40mm; Metal nuts 3 is a six-sided nut, and the big footpath of the internal thread of metal nuts 3 is with the big footpath of external thread of metal sleeve; The external diameter of metal nuts 3 is 60mm～80mm, highly is 50mm～60mm.
The described epoxy resin of present embodiment is the ethylene oxidic ester based epoxy resin.
This embodiment adopts the epoxy bond metal sleeve at glass fibre reinforced plastics rockbolts 6 body of rod afterbodys; Ground tackle directly pushes the fiberglass body of rod 6 and the fiberglass body of rod 6 is destroyed when having avoided pull-out test; Adopt metal nuts 3 and metal sleeve 3 to carry out the traditional anchor clamps of screw engagement replacement; Bearing capacity when having strengthened drawing has also made things convenient for the installation of whole testing device; Adopt the epoxy bond fiberglass body of rod 6 and metal sleeve 7, increased cohesive strength, the possibility of bonding failures and slip takes place in the fiberglass body of rod 6 and metal sleeve 7 when having avoided drawing.
So this embodiment fiberglass body of rod 6 to be tested when test is difficult for the device being tested squeeze and destroy, can carries big pulling capacity, has simple to operate, characteristic of accurate test.
Claims (5)
1. the on-the-spot test method of a glass fibre reinforced plastics rockbolts anchor force; It is characterized in that: in metal sleeve (7), fill with epoxy resin earlier; The one end insertion of the fiberglass body of rod (6) to be tested has been filled with in the metal sleeve (7) of epoxy resin, made the glass fibre reinforced plastics rockbolts (1) of test with afterbody band metal sleeve; Inject grout or anchoring agent at the bolthole that is drilled to again; The fiberglass body of rod (6) of the glass fibre reinforced plastics rockbolts (1) of afterbody band metal sleeve packed into inject the bolthole of grout or anchoring agent, make the metal sleeve (7) of the glass fibre reinforced plastics rockbolts (1) of afterbody band metal sleeve all be exposed to outside the bolthole; After grout or anchoring agent are solidified; Hollow hydraulic cylinder (2) is contained on the metal sleeve (7) of glass fibre reinforced plastics rockbolts (1) of afterbody band metal sleeve; Through the fastening hollow hydraulic cylinder of metal nuts (3) (2) on the precession metal sleeve (7), connect hollow hydraulic cylinder (2), tensimeter (5) and manual pump (4) with high-pressure oil pipe; Use manual pump (4) to hollow hydraulic cylinder (2) pressurization then, until being taken place loosening or destruction by the fiberglass body of rod (6) of anchoring, the pressure that recording manometer (5) shows also calculates draft, is anchor force; The reversal valve of last rotation manual pump (4) makes hollow hydraulic cylinder (2) unloading, resets.
2. the on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force according to claim 1; The material that it is characterized in that the described fiberglass body of rod (6) is the reinforced plastic glass fibre plastics; The fiberglass body of rod (6) is that perfect thread or afterbody are screw thread, and the Major Diam of the fiberglass body of rod (6) is 15mm～25mm.
3. the on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force according to claim 1; The outside diameter that it is characterized in that described metal sleeve (7) is 30mm～50mm; Long is 40cm～60cm, and the cylindrical total length of metal sleeve (7) is that the afterbody of screw thread or metal sleeve (7) is a screw thread; The central through hole inner wall coarse of metal sleeve (7), through hole internal diameter are 20mm～40mm.
4. the on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force according to claim 1 is characterized in that described metal nuts (3) is six-sided nut, and the big footpath of internal thread of metal nuts (3) is with the big footpath of external thread of metal sleeve; The external diameter of metal nuts (3) is 50mm～80mm, highly is 40mm～60mm.
5. the on-the-spot test method of glass fibre reinforced plastics rockbolts anchor force according to claim 1 is characterized in that described epoxy resin is the ethylene oxidic ester based epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100868330A CN102213628B (en) | 2011-04-08 | 2011-04-08 | Site testing method for anchoring force of glass fiber reinforced plastic anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100868330A CN102213628B (en) | 2011-04-08 | 2011-04-08 | Site testing method for anchoring force of glass fiber reinforced plastic anchor rod |
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| Publication Number | Publication Date |
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| CN102213628A CN102213628A (en) | 2011-10-12 |
| CN102213628B true CN102213628B (en) | 2012-11-21 |
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| CN2011100868330A Expired - Fee Related CN102213628B (en) | 2011-04-08 | 2011-04-08 | Site testing method for anchoring force of glass fiber reinforced plastic anchor rod |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822745B (en) * | 2014-03-05 | 2016-04-13 | 河南理工大学 | A kind ofly study the device and method of anchor-holding force of anchor bolt under boring flowing water and infiltration condition |
| CN104458115A (en) * | 2014-11-27 | 2015-03-25 | 中国电建集团成都勘测设计研究院有限公司 | Stress detector calibration device |
| CN104897566A (en) * | 2015-06-11 | 2015-09-09 | 安庆市德创机电产品设计有限公司 | Positioning detection device for combination degree between protective sleeve and terminal |
| CN106225967B (en) * | 2016-07-20 | 2019-02-19 | 中国人民解放军军械工程学院 | A kind of portable blocking force detection device |
| CN112033602A (en) * | 2020-09-24 | 2020-12-04 | 罗治军 | High-strength bolt ultrasonic axial force coefficient field calibration system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747400A (en) * | 1970-07-25 | 1973-07-24 | Dyckerhoff & Widmann Ag | Device for measuring the anchoring forces in prestressed ground or rock anchors |
| US3978722A (en) * | 1974-08-20 | 1976-09-07 | Firma Franz Glotzl | Dynamometer for anchors in building constructions |
| CN2107653U (en) * | 1991-01-04 | 1992-06-17 | 赵朔柱 | Clamping type anchored force measuring device |
| RO112127B1 (en) * | 1995-02-16 | 1997-05-30 | Sc Inst De Cercetari Si Proiec | Anchors lifting power determination apparatus |
| CN2362115Y (en) * | 1999-02-11 | 2000-02-02 | 李明 | Rockbolt stress random detector |
| CN2411471Y (en) * | 1999-12-15 | 2000-12-20 | 卜照坤 | Quick hydraulic rockbolt tension meter |
| CN201476907U (en) * | 2009-08-04 | 2010-05-19 | 岳峰 | Protected anchor rod drawing instrument |
-
2011
- 2011-04-08 CN CN2011100868330A patent/CN102213628B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747400A (en) * | 1970-07-25 | 1973-07-24 | Dyckerhoff & Widmann Ag | Device for measuring the anchoring forces in prestressed ground or rock anchors |
| US3978722A (en) * | 1974-08-20 | 1976-09-07 | Firma Franz Glotzl | Dynamometer for anchors in building constructions |
| CN2107653U (en) * | 1991-01-04 | 1992-06-17 | 赵朔柱 | Clamping type anchored force measuring device |
| RO112127B1 (en) * | 1995-02-16 | 1997-05-30 | Sc Inst De Cercetari Si Proiec | Anchors lifting power determination apparatus |
| CN2362115Y (en) * | 1999-02-11 | 2000-02-02 | 李明 | Rockbolt stress random detector |
| CN2411471Y (en) * | 1999-12-15 | 2000-12-20 | 卜照坤 | Quick hydraulic rockbolt tension meter |
| CN201476907U (en) * | 2009-08-04 | 2010-05-19 | 岳峰 | Protected anchor rod drawing instrument |
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| CN102213628A (en) | 2011-10-12 |
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Granted publication date: 20121121 Termination date: 20170408 |