CN110286029A - A kind of anchor rod drawing experimental provision and system - Google Patents
A kind of anchor rod drawing experimental provision and system Download PDFInfo
- Publication number
- CN110286029A CN110286029A CN201910672585.4A CN201910672585A CN110286029A CN 110286029 A CN110286029 A CN 110286029A CN 201910672585 A CN201910672585 A CN 201910672585A CN 110286029 A CN110286029 A CN 110286029A
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- disk
- experimental provision
- rod
- anchor rod
- drawing experimental
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- 238000007586 pull-out test Methods 0.000 claims abstract description 12
- 238000004873 anchoring Methods 0.000 abstract description 41
- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of anchor rod drawing experimental provision and systems, belong to anchoring experimental technique field.A kind of anchor rod drawing experimental provision, comprising: the edge of spaced clamping disk and press disk, clamping disk is connect by more connecting rods with the edge of press disk;The middle part of clamping disk is equipped with supporting rod, and supporting rod extends along backwards to the direction of press disk;The middle part for pressing disk is equipped with through-hole;Connecting rod is equipped with fixator placed in the middle.Anchor rod drawing experimental provision of the invention replaces anchoring body to be clamped, when avoiding anchoring body directly clamped, clamp pressure impacts final load displacement curve, simultaneously, fixator placed in the middle can limit anchoring body from multiple orientation, keep the Impact direction of anchoring body consistent with the force direction of pull-out test machine, avoid the inclination due to Impact direction and influences the accuracy of load displacement curve.
Description
Technical field
The present invention relates to anchoring experimental technique fields, and in particular to a kind of anchor rod drawing experimental provision and system.
Background technique
Currently, prestressed anchor/rope supporting is wide as one of core supporting measure in tunneling and underground engineering supporting
General application, and anchoring material used in anchor pole is mostly cement slurry, cement mortar and resin anchoring agent, now to the anchor pole containing anchoring body
The excessively vertical hydraulic anchor drawing instrument of anchoring strength research multi-pass carries out drawing.Under normal conditions, hydraulic drawing testing machine can be direct
Clamping anchorage body is tested, although pressure pull-out test machine can obtain complete load-displacement curve, in experimentation
In, direct clamping anchorage body carries out drawing, it will lead to final load displacement curve by large effect, meanwhile, directly press from both sides
It holds anchoring body and is not easily accomplished centering, thus the problem of will appear Impact direction inclination.
Summary of the invention
The purpose of the present invention is to provide a kind of anchor rod drawing experimental provision and systems, to solve existing anchor rod drawing experiment
In, direct clamping anchorage body carries out drawing, will lead to the problem of final load displacement curve is affected.
The technical scheme to solve the above technical problems is that
A kind of anchor rod drawing experimental provision, comprising: spaced clamping disk and press disk, the edge of clamping disk pass through more
Root connecting rod is connect with the edge of press disk;The middle part of clamping disk is equipped with supporting rod, and supporting rod prolongs along backwards to the direction of press disk
It stretches;The middle part for pressing disk is equipped with through-hole;Connecting rod is equipped with fixator placed in the middle.
After being connected between clamping disk and press disk of the invention by connecting rod, entirety is formed, is placed between connecting rod
Anchoring body.For connecting with pull-out test machine, the through-hole pressed on disk passes through supporting rod on clamping disk for anchor pole.Pass through
Supporting rod is pulled, fixed pressuring plate contacts with the end of anchoring body and generate pressure, to carry out the drawing between anchor pole and anchoring body
Experiment, when avoiding anchoring body directly clamped, clamp pressure impacts final load displacement curve.It is set in connecting rod
The fixator placed in the middle set can limit anchoring body from multiple orientation, make the Impact direction of anchoring body and pull-out test machine
Force direction is consistent, avoids the inclination due to Impact direction and influences the accuracy of load displacement curve, it is also possible to avoid
Since one end injustice that anchoring body is contacted with press disk causes Impact direction to tilt.
In addition, the normal pressure that press disk applies anchoring body, it is not easy to cause to damage to anchoring body, avoid direct clamping
Anchoring body and occur skidding, anchoring body damaged surfaces the problems such as.
Further, above-mentioned fixator placed in the middle includes screw rod, the first locking nut, jacking block and U-shaped fixing piece;First lock
Tight nut and jacking block are separately positioned on the both ends of screw rod;U-shaped fixing piece includes two tail ends and connecting pin;Two tail ends are arranged
At the middle part of screw rod, connecting pin is set in connecting rod.
U-shaped fixing piece of the invention is used to fixator placed in the middle being fixed on connecting rod, and the connecting pin of U-shaped fixing piece is arranged
After in connecting rod, two tail ends are sequentially sleeved on the screw rod with jacking block, then screw the first locking nut, make U-shaped fixation
Part can be collapsed to middle part, so that U-shaped fixing piece is fixed in connecting rod by frictional force.Jacking block is used to press anchoring body,
Realize the limit of anchoring body.
Further, above-mentioned jacking block one side is equipped with arc groove, and the corresponding another side of jacking block is equipped with adjusting rod;It adjusts
Pole runs through screw rod.
The arc groove that the present invention is arranged on jacking block with anchoring body surface of test piece for matching.Adjusting rod passes through screw rod
When, the position of adjustable jacking block, consequently facilitating the cooperation between jacking block and anchoring body.It is U-shaped when screwing the first locking nut
Fixing piece can slide in connecting rod, to contact with adjusting rod, continue screw on nut, can make U-shaped fixing piece and adjusting rod
It is in close contact, so that jacking block be fixed.
Further, inside the region that the arc groove of above-mentioned jacking block is surrounded towards more connecting rods.
The arc top groove of multiple jacking blocks can form the form encircled to limit to jacking block, while can be by corresponding
Jacking block adjust the extending direction of anchoring body, keep the Impact direction of anchoring body consistent with the force direction of pull-out test machine.
Further, above-mentioned jacking block is in crescent.
Further, the shapes and sizes of the inner sidewall of above-mentioned connecting pin and the shapes and sizes of connecting rod match.
When the connecting pin of U-shaped fixing piece and connecting rod are mutually matched, contact area can be increased, keep fixation more firm.
Further, above-mentioned more connecting rods are arranged in parallel, and the fixator placed in the middle in more connecting rods is positioned at same
Perpendicular in the plane of connecting rod.
When multiple fixators placed in the middle are located in the same plane perpendicular to connecting rod, the power of each jacking block is mutually balanced same
When, anchoring body will not generate shearing force, avoid impacting final load displacement curve.
Further, the both ends of above-mentioned connecting rod extend through press disk and clamping disk and are separately connected there are two nut.
After two nuts are contacted and screwed, two nuts can be made to be each attached to connecting rod by self-locking between nut
On, so that press disk and clamping disk are limited in connecting rod, in drawing experiment, press disk and clamping disk do not allow malleable its
Position.
A kind of anchor rod drawing experimental system, comprising: pull-out test machine and above-mentioned anchor rod drawing experimental provision;Pull-out test
Machine includes the first clamping end and the second clamping end;First clamping end is connect with supporting rod, and the second clamping end is oppositely arranged with through-hole.
The invention has the following advantages:
(1) anchor rod drawing experimental provision of the invention replaces anchoring body to be clamped, when avoiding anchoring body directly clamped,
Clamp pressure impacts final load displacement curve, meanwhile, fixator placed in the middle can from multiple orientation to anchoring body into
Row limit, keeps the Impact direction of anchoring body consistent with the force direction of pull-out test machine, avoid the inclination due to Impact direction and
Influence the accuracy of load displacement curve.
(2) fixation between fixator placed in the middle and connecting rod and right can be realized by disposable adjusting nut in the present invention
The fixation of jacking block can adjust the position of height and jacking block of the fixator placed in the middle in connecting rod simultaneously, convenient for anchoring body
Fixation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of anchor rod drawing experimental provision of the invention;
Fig. 2 is the structural schematic diagram of fixator placed in the middle of the invention;
Fig. 3 is the structural schematic diagram of U-shaped fixing piece of the invention;
Fig. 4 is the structural schematic diagram of anchor rod drawing experimental system of the invention.
In figure: 10- clamping disk;11- supporting rod;20- presses disk;21- through-hole;30- connecting rod;40- fixator placed in the middle;
41- screw rod;The first locking nut of 42-;43- jacking block;44-U type fixing piece;45- arc groove;46- adjusting rod;51- first is pressed from both sides
Hold end;The second clamping end 52-;60- anchoring body;70- anchor pole;441- tail end;The connecting pin 442-.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment
Please refer to Fig. 1, a kind of anchor rod drawing experimental provision, including successively interval setting and parallel clamping from top to bottom
Disk 10 and press disk 20.The top of clamping disk 10 is equipped with supporting rod 11, and supporting rod 11 is perpendicular to clamping disk 10.It presses in disk 20
Portion is equipped with through-hole 21, and the axis of through-hole 21 is overlapped with the axis of supporting rod 11.Press the edge of disk 20 by 8 connecting rods 30 with
The edge of clamping disk 10 connects, and connecting rod 30 is parallel to each other and vertically with clamping disk 10, and the both ends of connecting rod 30 extend through
Press disk 20 and clamping disk 10 are simultaneously separately connected there are two nut, after two nuts contact with each other, by self-locking between nut,
Press disk 20 and clamping disk 10 can be limited, the middle part of connecting rod 30 is equipped with fixator 40 placed in the middle, multiple placed in the middle solid
Determine device 40 to be located in same level.
Referring to figure 2. and Fig. 3, fixator 40 placed in the middle include screw rod 41, the first locking nut 42, jacking block 43, U-shaped fixing piece
44 and adjusting rod 46.One end of screw rod 41 is threadedly coupled with the first locking nut 42, and the other end is equipped with adjustment hole, adjusting rod 46
Through adjustment hole, and can be slided in adjustment hole.U-shaped fixing piece 44 includes two tail ends 441 and connecting pin 442.Screw rod 41
Middle part run through two tail ends 441, be placed in two tail ends 441 between first locking nut 42 and adjusting rod 46.Connecting pin
442 is arc-shaped, and the shapes and sizes of the shapes and sizes and connecting rod 30 of inner sidewall match, and enables connecting pin 442
It is set in connecting rod 30 well.
The both ends of U-shaped fixing piece 44 are limited by the first locking nut 42 and adjusting rod 46, the first locking nut 42
When squeezing U-shaped fixing piece 44, two tail ends 441 of U-shaped fixing piece 44 can be collapsed to middle part, to make connecting pin 442 and connect
Extension bar 30 closely connects, meanwhile, adjusting rod 46 is fixed in adjustment hole by the U-shaped meeting of fixing piece 44 squeeze adjustments bar 46.
Jacking block 43 is in crescent comprising arc groove 45, side corresponding with arc groove 45 and adjusting rod 46
End connection, moves jacking block 43 with the movement of adjusting rod 46, so as to adjust anchoring body by jacking block 43
60 position.In other embodiments of the invention, the shape of jacking block 43 can also be the groove type with arc groove 45
Etc. other shapes, groove can also be V-groove etc..
A kind of anchor rod drawing experimental system, including above-mentioned anchor rod drawing experimental provision and pull-out test machine.Pull-out test
Machine includes the first clamping end 51 and the second clamping end 52.First clamping end 51 is connect with supporting rod 11, the second clamping end 52 and anchor
Bar 70 connects, and anchor pole 70 is extend between clamping disk 10 and press disk 20 from through-hole 21.The anchoring body being connect with anchor pole 70
60 are placed between clamping disk 10 and press disk 20, and the tip contact of the bottom end of anchoring body 60 and press disk 20.Multiple jacking blocks
43 arc groove 45 carries out clamping limit to anchoring body 60 from multiple directions, and by adjusting rod 46 to the position of anchoring body 60
It is adjusted, anchoring body 60 is avoided to influence the accuracy of load displacement curve due to the inclination of Impact direction.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of anchor rod drawing experimental provision characterized by comprising spaced clamping disk (10) and press disk (20),
The edge of the clamping disk (10) is connect by more connecting rods (30) with the edge of press disk (20);The clamping disk
(10) middle part is equipped with supporting rod (11), and the supporting rod (11) extends along backwards to the direction of press disk (20);The top
The middle part of platen (20) is equipped with through-hole (21);The connecting rod (30) is equipped with fixator placed in the middle (40).
2. anchor rod drawing experimental provision according to claim 1, which is characterized in that the fixator (40) placed in the middle includes spiral shell
Bar (41), the first locking nut (42), jacking block (43) and U-shaped fixing piece (44);First locking nut (42) and described
Jacking block (43) is separately positioned on the both ends of the screw rod (41);The U-shaped fixing piece (44) includes two tail ends (441) and connection
It holds (442);Two tail ends (441) are set in the middle part of the screw rod (41), and the connecting pin (442) is set in the connection
On bar (30).
3. anchor rod drawing experimental provision according to claim 2, which is characterized in that jacking block (43) one side is equipped with arc
Connected in star (45), the corresponding another side of the jacking block (43) are equipped with adjusting rod (46);The adjusting rod (46) is through described
Screw rod (41).
4. anchor rod drawing experimental provision according to claim 3, which is characterized in that the arc groove of the jacking block (43)
(45) inside the region surrounded towards more connecting rods (30).
5. anchor rod drawing experimental provision according to claim 4, which is characterized in that the jacking block (43) is in crescent.
6. anchor rod drawing experimental provision according to claim 5, which is characterized in that the inner sidewall of the connecting pin (46)
Shapes and sizes and the shapes and sizes of the connecting rod (30) match.
7. anchor rod drawing experimental provision according to any one of claims 1 to 6, which is characterized in that more connecting rods (30)
It is arranged in parallel, and the fixator placed in the middle (40) on more connecting rods (30) is located at the same plane perpendicular to connecting rod (30)
On.
8. anchor rod drawing experimental provision according to claim 7, which is characterized in that distinguish at the both ends of the connecting rod (30)
Through the press disk (20) and the clamping disk (10) and it is separately connected there are two nut.
9. a kind of anchor rod drawing experimental system characterized by comprising any one of pull-out test machine and claim 1 to 8 institute
The anchor rod drawing experimental provision stated;The pull-out test machine includes the first clamping end (51) and the second clamping end (52);Described
One clamping end (51) is connect with the supporting rod (11), and second clamping end (52) is oppositely arranged with the through-hole (21).
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CN201910672585.4A CN110286029B (en) | 2019-07-24 | 2019-07-24 | Anchor rod drawing experimental device and system |
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CN201910672585.4A CN110286029B (en) | 2019-07-24 | 2019-07-24 | Anchor rod drawing experimental device and system |
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CN110286029B CN110286029B (en) | 2024-07-09 |
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Cited By (2)
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CN114486493A (en) * | 2022-01-25 | 2022-05-13 | 郑州大学 | Universal device for anchoring end part of FRP (fiber reinforced plastic) rod test piece and steel sleeve and using method |
CN114594001A (en) * | 2022-05-09 | 2022-06-07 | 武汉工程大学 | Auxiliary assembly and experiment appearance for anchor rod drawing experiment |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114486493A (en) * | 2022-01-25 | 2022-05-13 | 郑州大学 | Universal device for anchoring end part of FRP (fiber reinforced plastic) rod test piece and steel sleeve and using method |
CN114486493B (en) * | 2022-01-25 | 2023-10-10 | 郑州大学 | Universal device for anchoring end part of FRP rod material test piece and steel sleeve and use method |
CN114594001A (en) * | 2022-05-09 | 2022-06-07 | 武汉工程大学 | Auxiliary assembly and experiment appearance for anchor rod drawing experiment |
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