CN107328664A - A kind of self-balancing floating formula shearing loading device tested for rock - Google Patents
A kind of self-balancing floating formula shearing loading device tested for rock Download PDFInfo
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- CN107328664A CN107328664A CN201710507025.4A CN201710507025A CN107328664A CN 107328664 A CN107328664 A CN 107328664A CN 201710507025 A CN201710507025 A CN 201710507025A CN 107328664 A CN107328664 A CN 107328664A
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- horizontal
- normal direction
- framework
- shear box
- guide rail
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- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Abstract
The present invention relates to a kind of self-balancing floating formula shearing loading device tested for rock, shear box including horizontal addload framework, normal direction loading frame and for placing rock sample, horizontal addload framework is through normal direction loading frame in right-angled intersection, horizontal addload base of frame is provided with horizontal wheel, horizontal wheel bottom is provided with horizontal guide rail, horizontal addload framework is moved horizontally along horizontal guide rail, shear box is arranged in horizontal addload framework, one end of horizontal addload framework is provided with horizontal addload mechanism, and normal direction loading frame top is provided with normal direction load maintainer.Horizontal addload framework of the present invention is separated with normal direction loading frame, horizontal addload framework can integral level motion, facilitate large-size sample and shear box install；Antifriction linear guide rail is set, reduces frictional force between shear box and external structure in shear history, it is ensured that will not occurred level deflection so that result of the test is more accurate, reliable.
Description
Technical field
Loading frame is tested the present invention relates to a kind of rock test, and in particular to a kind of to be floated for the self-balancing that rock is tested
Dynamic formula shears loading device.
Background technology
Rock mass is made up of sillar and joint (structural plane) in nature, and the influence of the presence at joint to Rock Nature is notable
, the presence at joint not only weakens the intensity of rock mass, and provides the passage of flowing for current, induces various disasters.It is single
Individual joint as the structure of rock mass element, its engineering mechanics parameter be rock mechanics circle extensive concern and
To the focus and difficulties solved very well.
Indoor direct shear test (direct shear test) is the Main Means for carrying out single joint correlation properties research, and tradition is straight
Shear test machine level is each attached on same general frame to load cylinder and normal direction load cylinder, and shear box is simple in construction, whole
Body size is smaller, lighter in weight, directly installs shear box and sample during experiment inside general frame.In the recent period with testing machine skill
The progress of art, the shear-seepage coupling test machine at joint also begins to occur.Joint shear-seepage coupling test machine and ordinary straight
The difference of shear test machine substantially is the difference of shear box.In the shear-seepage coupling test machine of joint, joint is sheared-oozed
Coupling experiment box is flowed in order to ensure the sealing of current in shear history, whole shear box structure and sealing system are more complicated, weight
Amount is relatively large, when experiment machine frame still uses the general frame similar with common direct shear test machine, is needed in process of the test
Shear box and sample to be installed inside general frame, because shear box weight is larger, it is accurate in place that shear box is difficult to, level to
It is difficult to centering with normal direction load cylinder and shear box, this just result in the sample meeting occurred level in process of the test and offsets and vertical
Warpage so that result of the test produces certain error.
The content of the invention
The purpose of the present invention is exactly that a kind of self-balancing floating formula tested for rock is provided to solve the above problems
Shear loading device.
The purpose of the present invention is achieved through the following technical solutions：
A kind of self-balancing floating formula shearing loading device tested for rock, including the loading of horizontal addload framework, normal direction
Framework and the shear box for placing rock sample, described horizontal addload framework are handed over through normal direction loading frame in cross
Fork, described horizontal addload base of frame is provided with horizontal wheel, and described horizontal wheel bottom is provided with horizontal guide rail, described water
Flat loading frame is moved horizontally along horizontal guide rail, and described shear box is arranged in horizontal addload framework, described level
One end of loading frame is provided with the horizontal addload mechanism that horizontal shear is carried out to shear box, and described normal direction loading frame top is set
There is the normal direction load maintainer that normal direction loading is carried out to shear box, during test, horizontal addload framework is drawn out of normal direction loading frame
Go out, rock sample is placed in shear box, be pushed into normal direction loading frame, experimental test is carried out after being adjusted in place.
Further, described shear box is made up of upper shear box and down cut box, and described horizontal addload mechanism is cut
Shear force is acted on down cut box.
Further, described shear box bottom is provided with horizontal backing plate, and described horizontal backing plate bottom is provided with Antifriction linear
Guide rail, described Antifriction linear guide rail is fixed on normal direction loading frame, and Antifriction linear guide rail stretches out the portion of normal direction loading frame
Divide and be supported by Antifriction linear guide rail bearing.
Further, described horizontal backing plate is provided with elongated slot in horizontal shear direction, and described shear box bottom is caught in this
In elongated slot.
Further, described shear box two ends are connected by shearing loading head and pin with horizontal addload framework respectively
Connect.
Further, described horizontal addload mechanism and normal direction load maintainer include pressure sensor and oil cylinder.
Further, described normal direction load maintainer is provided with the spherical loading head of normal direction, described shear box top be provided with
The undertaking head that the spherical loading head of normal direction is engaged.
Further, described horizontal guide rail is two parallel guide rails, is arranged on the top of horizontal guide rail bearing, level
Guide rail is provided with the alignment pin positioned to horizontal addload framework.
Compared with prior art, the advantage of the invention is that：
1st, horizontal addload framework provided by the present invention is self-balancing floating formula shearing loading frame, with normal direction loading frame
Separation, self-balancing floating formula horizontal shear loading frame integral level can be moved on horizontal guide rail, before the test, by level plus
Carry framework to pull out inside normal direction loading frame, so that with enough space mounting sample and shear-seepage test box, sample
Normal direction loading just can be pushed into jointly with horizontal addload framework and shear-seepage test box after shear-seepage test box installation
Lower portion is tested, and more facilitates the installation of the sample and shear box of large-size.
2nd, Antifriction linear guide rail is set in horizontal backing plate bottom, Antifriction linear guide rail is fixed on normal direction loading frame base,
Antifriction linear guide rail not only reduces the frictional force in shear history between shear box and external structure to the full extent, and
Ensure that set direction is cut along in shear history to be carried out without occurred level deflection.
3rd, normal direction load maintainer is provided with the spherical loading head of normal direction, and the centre of form coincides with the shear box centre of form, it is ensured that Normal stress
Uniform accurate application, is not in the phenomenon of bias.
4th, there is positioning, orientation measure in horizontal shear direction and normal orientation, it is ensured that shear load and Normal stress exist
In process of the test will not occurred level deflection and normal direction bias so that result of the test is more accurate, reliable.
The present invention can be suitably used in the correlation engineerings such as water conservancy, traffic, mining, geology, nuclear waste storage, oil, be saved
Manage shear-seepage coupling test or carry out the shearing loading system of larger-size joint direct shear test.
Brief description of the drawings
Fig. 1 shears the side view of loading device for the present invention；
Fig. 2 shears the front view of loading device for the present invention；
Fig. 3 shears the top view of loading device for the present invention；
In figure：1st, horizontal addload framework；2nd, loading head is sheared afterwards；3rd, rear pin；4th, upper shear box；5th, down cut box；6、
Preceding pin；7th, preceding shearing loading head；8th, horizontal pressure force sensor；9th, horizontal addload oil cylinder；10th, horizontal wheel；11st, level is led
Rail；12nd, Antifriction linear guide rail；13rd, horizontal guide rail bearing；14th, Antifriction linear guide rail bearing；15th, horizontal backing plate；16th, alignment pin；
17th, normal direction loading frame；18th, spherical loading head；19th, normal pressure sensor；20th, normal direction load cylinder.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of self-balancing floating formula shearing loading device tested for rock, as Figure 1-3, including horizontal addload frame
Frame 1, rear shearing loading head 2, rear pin 3, preceding pin 6, preceding shearing loading head 7, horizontal pressure force sensor 8, horizontal addload oil cylinder
9th, horizontal wheel 10, horizontal guide rail 11, Antifriction linear guide rail 12, horizontal guide rail bearing 13, Antifriction linear guide rail bearing 14, level
Backing plate 15, alignment pin 16.The top of horizontal guide rail bearing 13 is two horizontal guide rails 11 parallel to each other, and horizontal addload framework 1 leads to
The horizontal wheel 10 for crossing its bottom can the straight reciprocating motion on horizontal guide rail 11.Shearing loading head 2 is fixed on level and added afterwards
One end of framework 1 is carried, preceding shearing loading head 7 passes through horizontal pressure force sensor 8 and the water for being fixed on the other end of horizontal addload framework 1
Flat load cylinder 9 is connected.Shear box shears loading head 7 and rear shearing loading head 2 with preceding respectively by preceding pin 6 and rear pin 3
It is connected, horizontal addload oil cylinder 9 is applied by coupled horizontal pressure force sensor 8 using preceding shearing loading head 7 to down cut box 5
Plus shearing force.There is a horizontal backing plate 15 in the inside of horizontal addload framework 1, the horizontal bottom of backing plate 15 loads frame to be fixed on normal direction
The Antifriction linear guide rail 12 of the base of frame 17, the part for stretching out normal direction loading frame 17 in Antifriction linear guide rail 12 utilizes Antifriction linear
Guide rail bearing 14 is supported.
Horizontal backing plate 15 and horizontal addload framework 1 are to separate, and any mechanically connect is not present in the two.Before the test, will
Horizontal addload framework 1 and horizontal backing plate 15 are pulled out jointly leaves normal direction loading frame 17, now normal direction loading frame 17 and level
It is noiseless between loading frame 1, sample can be easily installed.Sample is loaded in shear box, shear box is integrally hung in into level
Loading frame 1 is built on horizontal backing plate 15, and horizontal backing plate 15 has an elongated groove in shear direction, and shear box can just block
Enter in groove.The Antifriction linear guide rail 12 of the base of normal direction loading frame 17 is fixed in the horizontal bottom of backing plate 15 primarily to reducing
Frictional force between shear history reclaimed water flat bolster 15 and external structure.Antifriction linear guide rail 12 not only reduces to the full extent
Frictional force in shear history between shear box and external structure, and also assures that and cut along set side in shear history
To progress without occurred level deflection.Pin 3 after being installed after the completion of shear box lifting, by shear box and horizontal addload framework 1
Rear end is fixed.Inside the overall push-in normal direction loading frame 17 of horizontal addload framework 1, and alignment pin 16 is installed, now normal direction adds
The centre of form of spherical loading head 18 for carrying framework 17 coincides with the shear box centre of form, it is ensured that the uniform accurate application of Normal stress, will not
There is the phenomenon of normal direction bias.Apply in Normal stress to pre- constant load, pull out alignment pin 16, just can apply level afterwards and cut
Cut load.When applying horizontal shear load, upper shear box 4 is fixed by the rear end of rear pin 3 and horizontal addload framework 1, Gu
Horizontal addload oil cylinder 9 due to the front end of horizontal addload framework 1 promotes down cut box 5, and down cut box 5 is subtracting together with horizontal backing plate 15
Rub on line slideway 12 almost without friction slidably, horizontal addload framework 1 provides counter-force, and horizontal addload frame for shear load
Frame 1 apply shear load initial stage can integrally on horizontal guide rail 11 motion adjustment and shear load and Normal stress are not produced
Raw any influence.
Claims (8)
1. a kind of self-balancing floating formula shearing loading device tested for rock, including horizontal addload framework, normal direction loading frame
Frame and the shear box for placing rock sample, it is characterised in that described horizontal addload framework passes through normal direction loading frame
In right-angled intersection, described horizontal addload base of frame is provided with horizontal wheel, and described horizontal wheel bottom is provided with horizontal guide rail,
Described horizontal addload framework is moved horizontally along horizontal guide rail, and described shear box is arranged in horizontal addload framework, institute
The one end for the horizontal addload framework stated is provided with the horizontal addload mechanism that horizontal shear is carried out to shear box, described normal direction loading frame
Frame top is provided with the normal direction load maintainer that normal direction loading is carried out to shear box, during test, and horizontal addload framework is loaded from normal direction
Pulled out in framework, rock sample is placed in shear box, is pushed into normal direction loading frame, experiment survey is carried out after being adjusted in place
Examination.
2. a kind of self-balancing floating formula shearing loading device tested for rock according to claim 1, its feature exists
In described shear box is made up of upper shear box and down cut box, and the shearing force of described horizontal addload mechanism is cut under
Cut on box.
3. a kind of self-balancing floating formula shearing loading device tested for rock according to claim 2, its feature exists
In described shear box bottom is provided with horizontal backing plate, and described horizontal backing plate bottom is provided with Antifriction linear guide rail, described antifriction
Line slideway is fixed on normal direction loading frame, and the part that Antifriction linear guide rail stretches out normal direction loading frame is led by Antifriction linear
Rail bearing is supported.
4. a kind of self-balancing floating formula shearing loading device tested for rock according to claim 3, its feature exists
In described horizontal backing plate is provided with elongated slot in horizontal shear direction, and described shear box bottom is caught in the elongated slot.
5. a kind of self-balancing floating formula shearing loading device tested for rock according to claim 1, its feature exists
In described shear box two ends are attached by shearing loading head and pin with horizontal addload framework respectively.
6. a kind of self-balancing floating formula shearing loading device tested for rock according to claim 1, its feature exists
In described horizontal addload mechanism and normal direction load maintainer include pressure sensor and oil cylinder.
7. a kind of self-balancing floating formula shearing loading device tested for rock according to claim 6, its feature exists
In described normal direction load maintainer is provided with the spherical loading head of normal direction, and described shear box top is provided with and the spherical loading head of normal direction
The undertaking head being engaged.
8. a kind of self-balancing floating formula shearing loading device tested for rock according to claim 1, its feature exists
In described horizontal guide rail is two parallel guide rails, is arranged on the top of horizontal guide rail bearing, and horizontal guide rail is provided with to water
The alignment pin that flat loading frame is positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710507025.4A CN107328664B (en) | 2017-06-28 | 2017-06-28 | Self-balancing floating type shearing loading device for rock testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710507025.4A CN107328664B (en) | 2017-06-28 | 2017-06-28 | Self-balancing floating type shearing loading device for rock testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107328664A true CN107328664A (en) | 2017-11-07 |
| CN107328664B CN107328664B (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710507025.4A Active CN107328664B (en) | 2017-06-28 | 2017-06-28 | Self-balancing floating type shearing loading device for rock testing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089781A (en) * | 2020-01-16 | 2020-05-01 | 中国科学院武汉岩土力学研究所 | Rock shear test equipment and direct shear test method for rock test block |
| CN113916700A (en) * | 2021-09-30 | 2022-01-11 | 大连理工大学 | Low normal friction assembled shear box for circular shearing of rock mass structural plane |
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| CN103884608A (en) * | 2014-04-05 | 2014-06-25 | 湖南科技大学 | Rock structure surface shearing device and method |
| CN105300813A (en) * | 2015-11-21 | 2016-02-03 | 湘潭市汇丰设备制造有限公司 | Large-scale cyclic simple shear test apparatus |
| CN106124343A (en) * | 2016-08-25 | 2016-11-16 | 绍兴文理学院 | The pilot system of THMC coupling during consideration rock joint shear |
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Patent Citations (5)
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|---|---|---|---|---|
| KR20060026737A (en) * | 2004-09-21 | 2006-03-24 | 한국기계연구원 | Tension or pressing test apparatus of the rubber |
| CN103383327A (en) * | 2013-06-28 | 2013-11-06 | 中南大学 | Large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests |
| CN103884608A (en) * | 2014-04-05 | 2014-06-25 | 湖南科技大学 | Rock structure surface shearing device and method |
| CN105300813A (en) * | 2015-11-21 | 2016-02-03 | 湘潭市汇丰设备制造有限公司 | Large-scale cyclic simple shear test apparatus |
| CN106124343A (en) * | 2016-08-25 | 2016-11-16 | 绍兴文理学院 | The pilot system of THMC coupling during consideration rock joint shear |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089781A (en) * | 2020-01-16 | 2020-05-01 | 中国科学院武汉岩土力学研究所 | Rock shear test equipment and direct shear test method for rock test block |
| CN113916700A (en) * | 2021-09-30 | 2022-01-11 | 大连理工大学 | Low normal friction assembled shear box for circular shearing of rock mass structural plane |
| CN113916700B (en) * | 2021-09-30 | 2022-07-05 | 大连理工大学 | Low normal friction assembled shear box for circular shearing of rock mass structural plane |
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| Publication number | Publication date |
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| CN107328664B (en) | 2020-06-26 |
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