CN104089813B - Geotechnical Engineering triaxial compression test micro tribology load force transmitting board - Google Patents
Geotechnical Engineering triaxial compression test micro tribology load force transmitting board Download PDFInfo
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- CN104089813B CN104089813B CN201410333749.8A CN201410333749A CN104089813B CN 104089813 B CN104089813 B CN 104089813B CN 201410333749 A CN201410333749 A CN 201410333749A CN 104089813 B CN104089813 B CN 104089813B
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Abstract
The invention provides a kind of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board, comprise circular loading plate, the center of circular loading plate is provided with slide block stop rod, circular loading plate is along the circumferential direction radially evenly distributed with six the first rectangular recess, the centre of adjacent two the first rectangular recess is provided with the 3rd rectangular recess, the second rectangular recess is provided with between first rectangular recess and the 3rd contiguous rectangular recess, first rectangular recess, second rectangular recess and the 3rd rectangular recess embed the first guide rail respectively accordingly, second guide rail, 3rd guide rail, above-mentioned guide rail is provided with two arc grooves, steel ball is provided with in arc groove, above-mentioned guide rail is provided with multi-turn slide block successively along the radial direction of circular loading plate, slide block radially can be free to slide by steel ball on guide rail.Xial feed is applied on sample by multi-turn automatic slider by the present invention, reduces friction resistance simultaneously, can solve sample end restraint problem between slide block and circular loading plate by steel ball.
Description
Technical field
The present invention relates to soil mechanics shop experiment technical field, specifically a kind of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board.
Background technology
In geotechnical centrifuge model, inharmoniously friction force (being called for short interface friction resistance) often will be produced between the two due to what be out of shape between soil body material (sample) and loading structure (steel construction), the existence of interface friction resistance directly has influence on the truly stressed of sample, have influence on the distortion size and geometric of sample, test result even can be made to occur uncertain.Now there are some researches show, in ordinary triaxial test, under a certain strain regime, there is larger difference in the displacement of the particle in sample in zones of different, the relative displacement of the particle namely in subtriangular region, upper and lower end is minimum, the relative displacement of the particle in this extra-regional sample central region is comparatively large, presents drum type form after sample shear is cut into.These are all the external presentation that interface, end friction resistance causes.Therefore, explore and invent a kind of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board, effectively eliminating the end friction resistance of sample, and load is applied on sample, make sample can Free Transform in surface of contact tangential direction, improve test accuracy as far as possible, there is important practical usage.
The technology of existing reduction interface friction resistance has following several usually: adopt the less pad of high polishing plate, friction factor or be coated with the lubricant such as butter, vaseline between load plate and sample contacts face, though above method has certain effect, but still the requirement of test can not be met.
Summary of the invention
The object of the present invention is to provide a kind of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board, to solve the excessive end restraint problem caused of the interface friction resistance existed in triaxial test.
The present invention adopts following technical scheme to realize:
A kind of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board, comprise circular loading plate, the center of circular loading plate is provided with slide block stop rod, circular loading plate is along the circumferential direction radially evenly distributed with six the first rectangular recess, the centre of adjacent two the first rectangular recess is provided with the 3rd rectangular recess, the second rectangular recess is provided with between first rectangular recess and the 3rd contiguous rectangular recess, first rectangular recess, second rectangular recess and the 3rd rectangular recess are embedded with the first guide rail respectively accordingly, second guide rail, 3rd guide rail, first guide rail, second guide rail, 3rd guide rail is provided with arc groove, steel ball is provided with in arc groove, first guide rail, second guide rail, radial direction along circular loading plate on 3rd guide rail is provided with multi-turn slide block successively, multi-turn slide block is combined into the diameter disk more bigger than circular loading plate with slide block stop rod, slide block can at the first guide rail by steel ball, second guide rail, 3rd guide rail is radially free to slide.
Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as above, radial direction along circular loading plate is provided with seven circle slide blocks successively, be made up of the first slide block, the second slide block, the 3rd slide block, Four-slider, the 5th slide block, the 6th slide block, the 7th slide block respectively from the inside to the outside, first slide block is adjacent with slide block stop rod, first slide block, the second slide block, the 3rd slide block, Four-slider, the 5th slide block, the 6th slide block, the 7th slide block are arranged in successively on the first guide rail along the radial direction of circular loading plate, and are radially free to slide on the first guide rail by steel ball; Four-slider, the 5th slide block, the 6th slide block, the 7th slide block are radially arranged in above the second guide rail successively, and are radially free to slide on the second guide rail by steel ball; Second slide block, the 3rd slide block, Four-slider, the 5th slide block, the 6th slide block, the 7th slide block are radially arranged in above the 3rd guide rail successively, and are radially free to slide on the 3rd guide rail by steel ball.
Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as above, first slide block is circumferentially evenly distributed with 6, second slide block, the 3rd slide block is circumferentially uniformly distributed respectively 12, Four-slider, the 5th slide block, the 6th slide block, the 7th slide block is circumferentially uniformly distributed respectively 24, all 126 slide blocks and slide block stop rod are combined into a disk, for directly contacting with sample.
Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as above, guide rail comprises the guide rail body that a cross section is convex shape, guide rail body head clearance is provided with two arc grooves to lower recess, steel ball is covered with in each arc groove, guide rail body both sides are while be step surface, and opposite side step surface upright side walls is provided with chute; Slide block comprises a fan-shaped body, and fan-shaped body lower part is provided with the first vertical draw runner and the second draw runner, and the second draw runner is provided with the raised line of corresponding slide block upper hopper chute, and the first draw runner contacts with step surface, and the raised line of the second draw runner is inserted in the chute of guide rail.
Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as above, first rectangular recess, the second rectangular recess and the 3rd rectangular recess all offer bolt hole, on first guide rail, the second guide rail, the 3rd guide rail, correspondence is provided with fixed orifice, and guide rail is locked in circular loading plate by the fixed orifice on screw bolt passes guide rail, the bolt hole on groove.
Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as above, the diameter of bottom circular loading plate is 300mm, directly bears the xial feed of applying, and the disk diameter that slide block stop rod and slide block are combined into is 320mm, for directly contacting with sample.
Xial feed is applied on sample by multi-turn automatic slider by the present invention in triaxial test, make sliding friction become rolling friction by steel ball between slide block and circular loading plate simultaneously, thus the interface friction resistance effectively reduced between sample and load plate, make sample can Free Transform in surface of contact tangential direction, can solve sample end restraint problem, improve test accuracy as far as possible, improve the technical merit of triaxial test.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board of the present invention;
Fig. 2 is the guide rail arrangenent diagram of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board of the present invention;
Fig. 3 is the slide block arrangenent diagram of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board of the present invention;
Fig. 4 is the cut-open view of guide rail of the present invention (6,7,8);
Fig. 5 is the cut-open view of slide block of the present invention (12-18);
Fig. 6 is the perspective view of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board of the present invention;
Fig. 7 is the cut-open view of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board of the present invention.
In figure: 1-circular loading plate, the 2-the first rectangular recess, the 3-the second rectangular recess, 4-the three rectangular recess, 5-bolt hole, the 6-the first guide rail, 7-the second guide rail, the 8-the three guide rail, 9-arc groove, 10-steel ball, 11-slide block stop rod, the 12-the first slide block, 13-the second slide block, 14-the three slide block, the 15-the Four-slider, the 16-the five slide block, 17-the six slide block, 18-the seven slide block, 19-step surface, 20-chute, 21-fan-shaped body, 22-the first draw runner, the 23-the second draw runner, 24-raised line.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
Figure 1 shows that the STRUCTURE DECOMPOSITION schematic diagram of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board of the present invention, described Geotechnical Engineering triaxial compression test micro tribology load force transmitting board comprises circular loading plate 1, the center of circular loading plate 1 is provided with slide block stop rod 11, circular loading plate 1 is along the circumferential direction radially evenly distributed with six the first rectangular recess 2, one end of first rectangular recess 2 contacts with slide block stop rod 11, and the other end extends to circular loading plate 1 edge.One end that the centre of adjacent two the first rectangular recess 2 is provided with the 3rd rectangular recess the 4, three rectangular recess 4 and the first contiguous rectangular recess 2 against, the other end extends to circular loading plate 1 edge.The one end being provided with the second rectangular recess 3, second rectangular recess 3 between first rectangular recess 2 and the 3rd contiguous rectangular recess 4 and the 3rd contiguous rectangular recess 4 against, the other end extends to circular loading plate 1 edge.
Please also refer to Fig. 2, first rectangular recess 2, second rectangular recess 3 and the 3rd rectangular recess 4 are embedded with the first guide rail 6, second guide rail 7, the 3rd guide rail 8 respectively accordingly, insert depth is 6mm, simultaneously the first guide rail 6, the 3rd guide rail 8 is circumferentially uniformly distributed respectively 6, second guide rail 7 is circumferentially evenly distributed with 12, and is fixedly connected with circular loading plate 1 by bolt.Concrete, first rectangular recess 2, second rectangular recess 3 and the 3rd rectangular recess 4 all offer bolt hole 5, on first guide rail 6, second guide rail 7, the 3rd guide rail 8, correspondence is provided with fixed orifice, and guide rail can be locked in circular loading plate 1 by the fixed orifice on screw bolt passes guide rail, the bolt hole 6 on groove.
Please also refer to Fig. 3, radial direction along circular loading plate 1 on first guide rail 6, second guide rail 7, the 3rd guide rail 8 is provided with multi-turn slide block successively, is respectively the first slide block 12, second slide block 13, the 3rd slide block 14, Four-slider 15, the 5th slide block 16, the 6th slide block 17, the 7th slide block 18 from the inside to the outside.Wherein in an enforcement, first slide block 12 is adjacent with slide block stop rod 11, first slide block 12, second slide block 13, the 3rd slide block 14, Four-slider 15, the 5th slide block 16, the 6th slide block 17, the 7th slide block 18 are arranged in successively on the first guide rail 6 along the radial direction of circular loading plate 1, and are radially free to slide on the first guide rail 6 by steel ball 10; Four-slider 15, the 5th slide block 16, the 6th slide block 17, the 7th slide block 18 are radially arranged in above the second guide rail 7 successively, and are radially free to slide on the second guide rail 7 by steel ball 10; Second slide block 13, the 3rd slide block 14, Four-slider 15, the 5th slide block 16, the 6th slide block 17, the 7th slide block 18 are radially arranged in above the 3rd guide rail 8 successively, and are radially free to slide on the 3rd guide rail 8 by steel ball 10.First slide block is circumferentially evenly distributed with 6 simultaneously, second slide block 13, the 3rd slide block 14 is circumferentially uniformly distributed respectively 12, Four-slider 15, the 5th slide block 16, the 6th slide block 17, the 7th slide block 18 is circumferentially uniformly distributed respectively 24, and all 126 slide blocks are all free to slide along guide rail by steel ball 10.
Please also refer to Fig. 4, wherein in an embodiment, guide rail (6,7,8) comprises the guide rail body that a cross section is convex shape, and guide rail body head clearance is provided with two to the arc groove 9 of lower recess, is covered with steel ball 10 inside arc groove 9.Guide rail body both sides are while be step surface 19, and opposite side step surface upright side walls is provided with chute 20.
Please also refer to Fig. 5, it is the quadrant block of band both wings that slide block (12-18) comprises, and is close to outside guide rail inside both wings.Concrete, slide block (12-18) comprises a fan-shaped body 21, fan-shaped body 21 bottom is provided with the first vertical draw runner 22 and the second draw runner 23, second draw runner 23 is provided with the raised line 24 of corresponding slide block upper hopper chute 20, when mounted, steel ball 10 is filled in arc groove 9, slide block and fan-shaped body 21 are clasped, arc groove 9 covers by fan-shaped body 21, first draw runner 22 contacts with step surface 19, the raised line 24 of the second draw runner 23 is inserted in the chute 20 of guide rail, and can slide along chute 20, such slide block can realize radially sliding along guide rail in the cooperation of step surface 19 and chute 20 by the steel ball 10 in arc groove 9 and the first draw runner 22 and the second draw runner 23.
As shown in Figure 6, the present embodiment Geotechnical Engineering triaxial compression test micro tribology load force transmitting board has 126 slide blocks, above-mentioned 126 slide blocks and 1 slide block stop rod 11 are combined into disk that a diameter is 320mm and directly contact with sample, and be free to slide on guide rail by steel ball 10, to make in axial loading procedure sample end radially can Free Transform, reach micro tribology effect, solve three axle sample end friction resistance problems.
As shown in Figure 7, a kind of Geotechnical Engineering triaxial compression test micro tribology load force transmitting board is variable cross section disk, be followed successively by circular loading plate 1 from the bottom up, guide rail (6,7,8), steel ball 10, slide block (12-18), base diameter is 300mm, contact with load plate, upper diameter is 320mm, directly contacts with sample.Geotechnical Engineering triaxial compression test micro tribology load force transmitting board of the present invention, can effectively load be applied on sample, sample and load force transmitting board interfacial contact area tangential direction do not have friction force or friction resistance minimum (micro tribology), sample can Free Transform in surface of contact tangential direction, improves test accuracy as far as possible.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1. a Geotechnical Engineering triaxial compression test micro tribology load force transmitting board, it is characterized in that: comprise circular loading plate (1), the center of circular loading plate (1) is provided with slide block stop rod (11), circular loading plate (1) is along the circumferential direction radially evenly distributed with six the first rectangular recess (2), the centre of adjacent two the first rectangular recess (2) is provided with the 3rd rectangular recess (4), the second rectangular recess (3) is provided with between first rectangular recess (2) and the 3rd contiguous rectangular recess (4), first rectangular recess (2), second rectangular recess (3) and the 3rd rectangular recess (4) embed the first guide rail (6) respectively accordingly, second guide rail (7), 3rd guide rail (8), first guide rail (6), second guide rail (7), 3rd guide rail (8) is provided with arc groove (9), arc groove (9) is inner is provided with steel ball (10), first guide rail (6), second guide rail (7), radial direction along circular loading plate (1) on 3rd guide rail (8) is provided with multi-turn slide block successively, multi-turn slide block and slide block stop rod (11) are combined into the diameter disk more bigger than circular loading plate (1), slide block can in the first guide rail (6) by steel ball (10), second guide rail (7), 3rd guide rail (8) is radially free to slide.
2. Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as claimed in claim 1, it is characterized in that: the radial direction along circular loading plate (1) is provided with seven circle slide blocks successively, from the inside to the outside respectively by the first slide block (12), second slide block (13), 3rd slide block (14), Four-slider (15), 5th slide block (16), 6th slide block (17), 7th slide block (18) composition, first slide block (12) is adjacent with slide block stop rod (11), first slide block (12), second slide block (13), 3rd slide block (14), Four-slider (15), 5th slide block (16), 6th slide block (17), 7th slide block (18) is arranged on the first guide rail (6) along the radial direction of circular loading plate (1) successively, and be radially free to slide on the first guide rail (6) by steel ball (10), Four-slider (15), the 5th slide block (16), the 6th slide block (17), the 7th slide block (18) are radially arranged in above the second guide rail (7) successively, and are radially free to slide on the second guide rail (7) by steel ball (10), second slide block (13), the 3rd slide block (14), Four-slider (15), the 5th slide block (16), the 6th slide block (17), the 7th slide block (18) are radially arranged in above the 3rd guide rail (8) successively, and are radially free to slide on the 3rd guide rail (8) by steel ball (10).
3. Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as claimed in claim 2, it is characterized in that: the first slide block (12) is circumferentially evenly distributed with 6, second slide block (13), the 3rd slide block (14) is circumferentially uniformly distributed respectively 12, Four-slider (15), the 5th slide block (16), the 6th slide block (17), the 7th slide block (18) is circumferentially uniformly distributed respectively 24, all 126 slide blocks and slide block stop rod (11) are combined into a disk, for directly contacting with sample.
4. Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as claimed in claim 1, it is characterized in that: guide rail (6,7,8) comprises the guide rail body that a cross section is convex shape, guide rail body head clearance is provided with two arc grooves to lower recess (9), each arc groove is covered with steel ball in (9), guide rail body both sides are while be step surface (19), and opposite side step surface upright side walls is provided with chute (20); Slide block (12-18) comprises a fan-shaped body (21), fan-shaped body (21) bottom is provided with vertical the first draw runner (22) and the second draw runner (23), second draw runner (23) is provided with the raised line (24) of corresponding slide block upper hopper chute (20), first draw runner (22) contacts with step surface (19), and the raised line (24) of the second draw runner (23) is inserted in the chute (20) of guide rail.
5. Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as claimed in claim 1, it is characterized in that: the first rectangular recess (2), the second rectangular recess (3) and the 3rd rectangular recess (4) all offer bolt hole (5), first guide rail (6), the second guide rail (7), the upper correspondence of the 3rd guide rail (8) are provided with fixed orifice, and guide rail is locked in circular loading plate (1) by the fixed orifice on screw bolt passes guide rail, the bolt hole on groove (5).
6. Geotechnical Engineering triaxial compression test micro tribology load force transmitting board as claimed in claim 2 or claim 3, it is characterized in that: described circular loading plate (1) radial cross-section diameter is 300mm, directly bear the xial feed of applying, the disk diameter that slide block stop rod (11) and slide block are combined into is 320mm, for directly contacting with sample.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410333749.8A CN104089813B (en) | 2014-07-14 | 2014-07-14 | Geotechnical Engineering triaxial compression test micro tribology load force transmitting board |
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| CN201410333749.8A CN104089813B (en) | 2014-07-14 | 2014-07-14 | Geotechnical Engineering triaxial compression test micro tribology load force transmitting board |
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| CN104089813A CN104089813A (en) | 2014-10-08 |
| CN104089813B true CN104089813B (en) | 2016-02-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105021461B (en) * | 2015-08-14 | 2017-06-23 | 长江水利委员会长江科学院 | The geotechnological two-way micro tribology load force transmitting board of true triaxial test |
| CN112014211B (en) * | 2020-08-26 | 2022-04-01 | 南京信息工程大学 | Geotechnical self-adaptive deformation micro-friction loading plate |
| CN112049159B (en) * | 2020-09-27 | 2022-03-01 | 南京信息工程大学 | Low-friction plane loading plate capable of automatically adapting to sample deformation |
| CN112213190B (en) * | 2020-10-22 | 2022-04-01 | 南京信息工程大学 | Expandable deformation micro-friction resistance circular loading plate |
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| KR100878690B1 (en) * | 2006-12-19 | 2009-01-13 | 주식회사 포스코 | Automatic adjustment device for moment equilibrium of die using for friction test |
| CN202383010U (en) * | 2011-12-12 | 2012-08-15 | 四川大学 | Assembling-type variable-size sample box member |
| CN202453260U (en) * | 2012-01-04 | 2012-09-26 | 洛阳轴研科技股份有限公司 | Testing device for frictional wear of bearing rolling ball |
| CN203037646U (en) * | 2012-10-22 | 2013-07-03 | 长沙理工大学 | Device for reducing frictional forces in radial expansion force test |
| CN203178050U (en) * | 2012-12-31 | 2013-09-04 | 浙江工业大学 | Horizontal modal test suspension device |
| CN203941058U (en) * | 2014-07-14 | 2014-11-12 | 长江水利委员会长江科学院 | The micro-friction load of Geotechnical Engineering triaxial compression test force transmitting board |
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