CN101393093A - Cementing granule contact anti-shearing and torsion resistant test device - Google Patents
Cementing granule contact anti-shearing and torsion resistant test device Download PDFInfo
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- CN101393093A CN101393093A CNA200710046139XA CN200710046139A CN101393093A CN 101393093 A CN101393093 A CN 101393093A CN A200710046139X A CNA200710046139X A CN A200710046139XA CN 200710046139 A CN200710046139 A CN 200710046139A CN 101393093 A CN101393093 A CN 101393093A
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Abstract
The invention discloses a device for a contact shear resistant and torsion resistant test of cement particles, which comprises an L-shaped part one and a Z-shaped part two, wherein the part one consists of a horizontal part (11) and a vertical part (12), the part two consists of a first vertical part (21), a first horizontal part (22) and a second vertical part (23), opposite surfaces (6) of the first horizontal part (22) of the part two and the horizontal part (11) of the part one is positioned in the horizontal direction, the opposite surfaces (6) of the part two and the part one are respectively provided with fixing devices (71, 72) which can fix the cement particles, and the central connecting line of the opposite surfaces (6) is in the vertical direction. With the structure, the shearing and torsion mechanical characteristics of contact points of the cement particles at different normal pressures can be measured precisely.
Description
Technical field
The present invention relates to a kind of shearing resistance, torsion resistant test device, particularly a kind of cementing granule contact anti-shearing, torsion resistant test device.
Background technology
Usually run into sand foundation in foundation works and the underground works.This class engineering design at present or by rule of thumb, or adopt Finite Element to carry out numerical simulation.But Finite Element is based on the numerical method of continuum mechanics, is used to analyze sand and has very big defective, and analysis result is often unreliable.Analyze this discreteness particulate material of sand, a kind of more efficient methods is a discrete element method.Discrete element method is a kind of numerical simulation technology based on the discontinuous media mechanics.The crucial part of discrete element method is the contact mechanics between the particle, promptly contacts constitutive relation.Discrete element method successfully has been used for the numerical simulation of non-cement particle mechanics of materials behaviors such as dry sand.But on-the-spot topsoil and dry sand have some distinct mechanical behaviors, and this is because most of topsoil has micromechanism, promptly has cementing matter between the soil particle.Set up the cement particle contact mechanics by test, can realize the discrete element numerical simulation of topsoil, for the design of foundation works and underground works provides theoretical direction.Existing test result has only been measured the mechanical characteristic of cement particle contact point when shearing merely and reversing merely, and can not measure the cement particle contact point at different normal pressure down cuts and the mechanical characteristic that reverses.
Summary of the invention
The technical problem to be solved in the present invention provides the shearing resistance of a kind of mensuration cement particle contact point, torsion resistant test device.
For solving the problems of the technologies described above, cementing granule contact anti-shearing of the present invention, torsion resistant test device comprise L shaped part one, Z-shaped part two, part one is made up of horizontal part and vertical component effect, part two is made up of first vertical component effect, first horizontal part and second vertical component effect, the opposite face of first horizontal part of part two and the horizontal part of part one is a horizontal direction, two fixedly stationary installations of cement particle are set respectively on the opposite face of part two and part one, and its line of centres is a vertical direction.
The stationary installation of described fixedly cement particle is provided with the tapped through hole vertical with groove for the groove that can put into cement particle is set respectively on part one on opposite face.
Second vertical component effect of part two and the horizontal part horizontal direction of part one and vertical direction all are provided with the gap; First vertical component effect of part two and the horizontal part of part one are provided with the gap in the horizontal direction.The horizontal part upper groove arranged outside of part one is the inclined-plane.Like this, can guarantee to realize smoothly shearing and reversing not disturbance mutually in certain load and displacement range between the part.
First horizontal part of part two outside is provided with an arc groove, and its center is on the stationary installation line of centres of fixing cement particle.First vertical component effect of part two outside is provided with two arc grooves, and one of them groove is located on the surface level at opposite face place of part two and part one, and another groove is located at the end of part 2 first vertical component effects; Second vertical component effect outside close end of part two is provided with an arc groove, and the vertical component effect outside of part one also is provided with an arc groove, and the line of centres of these two grooves is on surface level.
After adopting such structure, the present invention can measure the cement particle contact point at different normal pressure down cuts and the mechanical characteristic that reverses.This microcosmic contact constitutive relation for cement particle is very important.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural drawing of cementing granule contact anti-shearing of the present invention, torsion resistant test device.
Fig. 2 is the structural drawing that reverses test of cementing granule contact anti-shearing of the present invention, torsion resistant test device.
Fig. 3 is the structural drawing of the shearing test of cementing granule contact anti-shearing of the present invention, torsion resistant test device.
Fig. 4 is the front view of the part one of cementing granule contact anti-shearing of the present invention, torsion resistant test device.
Fig. 5 is the front view of the part two of cementing granule contact anti-shearing of the present invention, torsion resistant test device.
Embodiment
Cementing granule contact anti-shearing, torsion resistant test device comprise L shaped part one, Z-shaped part two, part one is made up of horizontal part 11 and vertical component effect 12, part two is made up of first vertical component effect 21, first horizontal part 22 and second vertical component effect 23, first horizontal part 22 of part two is a horizontal direction with the opposite face 6 of the horizontal part 11 of part one, two fixedly stationary installations 71,72 of cement particle are set respectively on the opposite face 6 of part two and part one, and its line of centres is a vertical direction.
Fixedly the stationary installation 71,72 of cement particle is for being provided with the groove 73,74 that can put into cement particle respectively on opposite face 6, and the tapped through hole 75,76 vertical with groove 73,74 is set on part one.
Second vertical component effect 23 of part two all is provided with the gap with horizontal part 11 horizontal directions and the vertical direction of part one; First vertical component effect 21 of part two is provided with the gap in the horizontal direction with the horizontal part 11 of part one.
First horizontal part, 22 outsides of part two are provided with an arc groove 221, and its center is on the line of centres of the fixing stationary installation 71,72 of cement particle.First vertical component effect, 21 outsides of part two are provided with two arc grooves 211,212, and groove 211 is on the surface level at opposite face 6 places of part two and part one, and groove 212 is located at the end of part 2 first vertical component effects 21; Second vertical component effect, 23 outside close ends of part two are provided with an arc groove 231, and vertical component effect 12 outsides of part one also are provided with an arc groove 121, and the groove 121 of part one and groove 211 lines of centres on the part two are on surface level.
In the groove 221 of the part two horizontal parts outside, a unidirectional force application apparatus 8 is set.Unidirectional force application apparatus 8 comprises force bearing plate, application of force rod and force bearing bar, one side of described force bearing plate is provided with an application of force rod, embeds in the groove 221 at least two force bearing bars of opposite side setting, three force bearing bars or more can also be set, set according to actual conditions and needs.
A unidirectional force application apparatus 8 respectively is set in the groove 121,211 of part one and part two when carrying out shearing test, in the groove 212,231 of part two a unidirectional force application apparatus 8 is set respectively when reversing test.
At least two rollers of part one horizontal part, 11 arranged outside 9, described roller 9 also is arranged on the cushion block 5.
The present invention can test the shearing of cement particle contact point under the different normal pressures respectively and reverse mechanical characteristic on twin shaft loading equipemtn (as rock twin shaft flow graph).
According to employed cement particle shape and size, required maximum displacement and required hard-over when reversing during shearing, and the concrete size of each parts of the present invention is determined in the restriction of loading equipemtn.What accompanying drawing was given is the device that designs at cylindrical particle.
The twisting test operating process:
1, with cement particle by mode shown in Figure 2 this device of packing into, tight a bolt.Concrete clamping process is as follows: the horizontal part 22 of the horizontal part 11 of part one and part two is relative, and with the vertical component effect 12 of part one and part two vertical component effects 23 towards being placed down on the horizontal stand, then the cylindrical particle that cements is put into the fixedly groove 73 and 74 of cement particle device, tightening fixedly at last, the bolt 75 and 76 of cement particle device gets final product.
2, this device is installed to twin shaft compression-loaded equipment such as rock twin shaft flow graph by mode shown in Figure 2.Two unidirectional force application apparatus 8 on first vertical component effect 21 of part two and second vertical component effect 23 load axle 3 with level and are connected, and cushion block 5 is connected with vertical loading axle 4 with unidirectional force application apparatus 8 on part 2 first horizontal parts 22.In each contact point coating lubricating oil, and make each parts contact good.
3, at first apply vertical load to certain certain value, and then apply horizontal loading.Use displacement control when level loads, set loading speed as required.What measure is that the granular cementation place is not having under pressure and the different pressures respectively, the mechanics parameter of shearing and torque failure, and pressure is a disposable stationary value that applies, shearing and torsion load are to apply according to certain rate of displacement.Application of force order can not exchanging order.
Each parts stressing conditions when applying vertical load: part two horizontal parts are subjected to the pressure effect straight down of application of force rod, and this pressure passes to top coupon by the fixing bolt of coupon device, passes to glue-line by coupon again; The horizontal part of part one is subjected to the pressure effect straight up of application of force rod, and this power passes to following coupon by the fixing bolt of coupon device, passes to glue-line by coupon again, and glue-line is subjected to up and down that the effect of two pressure keeps balance.When applying horizontal loading, part one does not stress in the horizontal direction; Two vertical component effects of part two are subjected to the horizontal force action of application of force rod respectively, these two horizontal force sizes are identical, direction is opposite, but not on same straight line, form a pair of couple, so part one is subjected to anticlockwise moment, will rotates counterclockwise around the glue-line central point of glued pole, glue-line produces a clockwise moment of resistance during rotation, the equalising torque that this moment and couple produce.Can calculate the angle of rotation and the arm of force of couple according to measured horizontal shift, calculate moment according to the horizontal force of measuring again.
The shear test operating process:
1, with cement particle by mode shown in Figure 3 this device of packing into, tight a bolt.
2, this device is installed to twin shaft compression-loaded equipment such as rock twin shaft flow graph by Fig. 3 mode.In each contact point coating lubricating oil, and make each parts contact good.
3, at first apply vertical load to certain certain value, and then apply horizontal loading.Use displacement control when level loads, set loading speed as required.
Claims (5)
1. a cementing granule contact anti-shearing, torsion resistant test device, it is characterized in that: comprise L shaped part one, Z-shaped part two, part one is made up of horizontal part (11) and vertical component effect (12), part two is made up of first vertical component effect (21), first horizontal part (22) and second vertical component effect (23), first horizontal part (22) of part two is a horizontal direction with the opposite face (6) of the horizontal part (11) of part one, two fixedly stationary installations of cement particle (71,72) are set respectively on the opposite face of part two and part one (6), and its line of centres is a vertical direction.
2. cementing granule contact anti-shearing according to claim 1, torsion resistant test device, it is characterized in that: the stationary installation of described fixedly cement particle (71,72) is provided with the tapped through hole (75,76) vertical with groove (73,74) for the groove (73,74) that can put into cement particle is set respectively on part one on opposite face (6).
3. cementing granule contact anti-shearing according to claim 1, torsion resistant test device is characterized in that: second vertical component effect (23) of part two all is provided with the gap with horizontal part (11) horizontal direction and the vertical direction of part one; First vertical component effect (21) of part two is provided with the gap in the horizontal direction with the horizontal part (11) of part one.
4. cementing granule contact anti-shearing according to claim 1, torsion resistant test device is characterized in that: the horizontal part of part one (11) upper groove (73) arranged outside is the inclined-plane.
5. cementing granule contact anti-shearing according to claim 1, torsion resistant test device, it is characterized in that: first horizontal part of part two outside is provided with an arc groove (221), and its center is on the fixing stationary installation of cement particle (71, the 72) line of centres.First vertical component effect (21) outside of part two is provided with two arc grooves (211,212), and groove (211) is on the surface level at opposite face (6) place of part two and part one, and groove (212) is located at the end of part 2 first vertical component effects (21); Second vertical component effect (23) outside close end of part two is provided with an arc groove (231), the vertical component effect of part one (12) outside also is provided with an arc groove (121), and groove (211) line of centres on groove on the part one (121) and the part two is on surface level.
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| CN200710046139XA CN101393093B (en) | 2007-09-19 | 2007-09-19 | Cementing granule contact anti-shearing and torsion resistant test device |
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| CN200710046139XA CN101393093B (en) | 2007-09-19 | 2007-09-19 | Cementing granule contact anti-shearing and torsion resistant test device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102175601A (en) * | 2010-12-24 | 2011-09-07 | 燕山大学 | Testing machine for evaluating cementing compound anti-torsion shearing performance |
| CN104614258A (en) * | 2015-01-22 | 2015-05-13 | 同济大学 | Testing device for contact shear resistance, bending resistance and torsion resistance of hemispherical ideal cementation particles |
| CN104897459A (en) * | 2015-06-23 | 2015-09-09 | 北京航空航天大学 | Multidirectional loading system used for mechanical test of particles |
| CN105842161A (en) * | 2016-03-28 | 2016-08-10 | 盐城工学院 | Test device and test method for tensile and compression performance of cement among particles |
| CN105891108A (en) * | 2016-03-28 | 2016-08-24 | 盐城工学院 | Device and method for testing shearing performance of inter-particle cement |
| CN106813977A (en) * | 2017-01-18 | 2017-06-09 | 浙江科技学院（浙江中德科技促进中心） | Carefully see strain gauge means and measuring method in the cementing area of sand particle nanogel |
| CN106814031A (en) * | 2017-01-18 | 2017-06-09 | 浙江科技学院（浙江中德科技促进中心） | The cementing shearing of sand particle nanogel and bending strength test device and its method |
| CN106840921A (en) * | 2017-01-23 | 2017-06-13 | 浙江科技学院（浙江中德科技促进中心） | The cementing area's torsional strength of sand particle nanogel and shearing strain test device and method |
| CN107402181A (en) * | 2017-08-25 | 2017-11-28 | 中国石油大学(华东) | Cement particle strength testing device and method under different loads in a kind of hot environment |
| CN110186816A (en) * | 2019-05-16 | 2019-08-30 | 中国地质大学（武汉） | A kind of experimental rig for testing granular materials micro kinetics characteristic |
| CN114562633A (en) * | 2022-01-12 | 2022-05-31 | 广东大鹏液化天然气有限公司 | Online repair method and device for shearing resistance of composite material of pressure pipeline |
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| CN201301456Y (en) * | 2008-10-23 | 2009-09-02 | 同济大学 | Rotation prevention clamp for testing contact mechanics characteristic of cementation granules |
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2007
- 2007-09-19 CN CN200710046139XA patent/CN101393093B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175601A (en) * | 2010-12-24 | 2011-09-07 | 燕山大学 | Testing machine for evaluating cementing compound anti-torsion shearing performance |
| CN104614258A (en) * | 2015-01-22 | 2015-05-13 | 同济大学 | Testing device for contact shear resistance, bending resistance and torsion resistance of hemispherical ideal cementation particles |
| CN104897459B (en) * | 2015-06-23 | 2018-03-30 | 北京航空航天大学 | A kind of multidirectional loading system for particulate matter mechanical test |
| CN104897459A (en) * | 2015-06-23 | 2015-09-09 | 北京航空航天大学 | Multidirectional loading system used for mechanical test of particles |
| CN105842161A (en) * | 2016-03-28 | 2016-08-10 | 盐城工学院 | Test device and test method for tensile and compression performance of cement among particles |
| CN105891108A (en) * | 2016-03-28 | 2016-08-24 | 盐城工学院 | Device and method for testing shearing performance of inter-particle cement |
| CN106813977B (en) * | 2017-01-18 | 2019-05-17 | 浙江科技学院（浙江中德科技促进中心） | Carefully see strain gauge means and measurement method in the cementing area of sand particle nanogel |
| CN106814031A (en) * | 2017-01-18 | 2017-06-09 | 浙江科技学院（浙江中德科技促进中心） | The cementing shearing of sand particle nanogel and bending strength test device and its method |
| CN106814031B (en) * | 2017-01-18 | 2019-03-19 | 浙江科技学院（浙江中德科技促进中心） | The cementing shearing of sand particle nanogel and bending strength test device and its method |
| CN106813977A (en) * | 2017-01-18 | 2017-06-09 | 浙江科技学院（浙江中德科技促进中心） | Carefully see strain gauge means and measuring method in the cementing area of sand particle nanogel |
| CN106840921A (en) * | 2017-01-23 | 2017-06-13 | 浙江科技学院（浙江中德科技促进中心） | The cementing area's torsional strength of sand particle nanogel and shearing strain test device and method |
| CN106840921B (en) * | 2017-01-23 | 2019-04-05 | 浙江科技学院（浙江中德科技促进中心） | The cementing area's torsional strength of sand particle nanogel and shearing strain test device and method |
| CN107402181A (en) * | 2017-08-25 | 2017-11-28 | 中国石油大学(华东) | Cement particle strength testing device and method under different loads in a kind of hot environment |
| CN107402181B (en) * | 2017-08-25 | 2019-08-30 | 中国石油大学(华东) | Cement particle strength testing device and method under different loads in a kind of hot environment |
| CN110186816A (en) * | 2019-05-16 | 2019-08-30 | 中国地质大学（武汉） | A kind of experimental rig for testing granular materials micro kinetics characteristic |
| CN110186816B (en) * | 2019-05-16 | 2024-02-27 | 中国地质大学（武汉） | Test device for testing microscopic dynamics characteristics of granular materials |
| CN114562633A (en) * | 2022-01-12 | 2022-05-31 | 广东大鹏液化天然气有限公司 | Online repair method and device for shearing resistance of composite material of pressure pipeline |
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