CN204831924U - Two -way load that rubs a little of real triaxial test of geotechnique passes power board - Google Patents
Two -way load that rubs a little of real triaxial test of geotechnique passes power board Download PDFInfo
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- CN204831924U CN204831924U CN201520613876.3U CN201520613876U CN204831924U CN 204831924 U CN204831924 U CN 204831924U CN 201520613876 U CN201520613876 U CN 201520613876U CN 204831924 U CN204831924 U CN 204831924U
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- draw runner
- sample
- triaxial test
- slide block
- rectangle loading
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Abstract
The utility model provides a two -way load that rubs a little of real triaxial test of geotechnique passes power board for place the sample both sides during real triaxial test, two -way load that rubs a little of real triaxial test of geotechnique passes power board includes the rectangle loading board, the upper portion of rectangle loading board is equipped with can follow the rolling roller bearing row of 1 direction of sigma, the roller bearing is arranged upward to circulate in proper order along 1 direction of sigma and is arranged first draw runner, second draw runner and third draw runner, first draw runner, 3 directions of sigma along the rectangle loading board on second draw runner and the third draw runner are equipped with the slider in proper order, the slider expert can be at first draw runner, freely slide along 3 orientations of sigma on second draw runner and the third draw runner, first draw runner, slider on second draw runner and the third draw runner is pieced one and is greater than the rectangle contact plate of specimen size, be used for with sample direct contact. The utility model discloses can realize under the real triaxial stress state that sample two -way on the contact surface freely warp, effectively solve the too big problem of frictional resistance of load plate and sample contact surface.
Description
Technical field
The utility model relates to soil mechanics shop experiment technical field, specifically a kind of geotechnological true triaxial test two-way micro tribology load force transmitting board.
Background technology
Geotechnique's true triaxil tester is a kind of geotechnical testament instrument of real simulation soil body triaxial stress state, true triaxil tester adopts cuboid sample, from three principal direction of stress independent loads, make in soil sample, to produce uniform stress and strain, relative to ordinary triaxial test, true triaxial test can reflect the triaxial stress state of native unit more comprehensively, more really, can be used for stress-strain characteristics and checking and the development soil constitutive model etc. of studying the soil body.According to mechanics principle, in the soil body, the stress of certain point can be analyzed to three principle stresses acted on mutual vertical plane, is called large principle stress σ
1, intermediate principal stress σ
2with minor principal stress σ
3, its size is σ
1> σ
2> σ
3, true triaxial test requires that the load that three directions apply is normal stress, and loading surface is without shear stress.But because of the complicacy of its equipment itself, current true triaxil tester is Shortcomings part also, be mainly manifested in load plate and sample contacts face exists larger friction resistance, namely on loading surface, create additional shear stress, cause test findings and actual conditions to produce deviation.Therefore, must consider when designing true triaxil tester the friction resistance how reducing load plate and sample contacts face, realizing the reliability of stress state as far as possible.In true triaxial test, because sample is at σ
2direction contacts with rigid plate, requires that sample is at σ
1while direction is compressed, at σ
3direction can Free Transform, and this is bidirectional interface frictional resistance problem.Therefore, explore and a kind of geotechnological true triaxial test of utility model two-way micro tribology load force transmitting board, interface friction resistance between effective elimination sample and load plate, make sample can free double-deformation in surface of contact tangential direction, improve test accuracy as far as possible, improve the technical merit of true triaxial test, 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, sample two-way Free Transform on the contact surface cannot be realized.
Utility model content
The purpose of this utility model is to provide a kind of geotechnological true triaxial test two-way micro tribology load force transmitting board, to realize sample two-way Free Transform on the contact surface under true triaxial stress state, effectively solve the problem that the friction resistance in load plate and sample contacts face is excessive.
The utility model adopts following technical scheme to realize:
A kind of geotechnological true triaxial test two-way micro tribology load force transmitting board, for placing sample both sides during true triaxial test, in true triaxial test, sample is subject to three groups of stress acted on mutual vertical plane, and three groups of acting forces are called large principle stress σ
1, intermediate principal stress σ
2with minor principal stress σ
3, it is characterized in that: described geotechnological true triaxial test two-way micro tribology load force transmitting board comprises rectangle loading plate, and the top of rectangle loading plate is provided with can along σ
1the roller bearing row rolled in direction, along σ on roller bearing row
1direction is cycle arrangement first draw runner, the second draw runner and the 3rd draw runner successively, along the σ of rectangle loading plate on the first draw runner, the second draw runner and the 3rd draw runner
3direction is provided with slide block successively, and slide block can along σ on the first draw runner, the second draw runner and the 3rd draw runner
3direction is free to slide, and the slide block on the first draw runner, the second draw runner and the 3rd draw runner is combined into the rectangular touch plate that is greater than specimen size, for directly contacting with sample.
Geotechnological true triaxial test as above two-way micro tribology load force transmitting board, the top of rectangle loading plate is along σ
3interval, direction arranges multiple chute, and form support between adjacent two chutes, on support, interval arranges multiple arc groove, and the standoff arc groove of institute is at σ
3direction is on same straight line, and arrange roller bearing in each arc groove corresponding position in each chute, rotating shaft is through the σ being positioned at rectangle loading plate
3be erected on arc groove after roller bearing on the same straight line in direction, the roller bearing that rotating shaft wears is at σ
1direction is formed described roller bearing row.
Geotechnological true triaxial test as above two-way micro tribology load force transmitting board, the upper end of the first draw runner and the 3rd draw runner is all along the σ of rectangle loading plate
3direction is arranged with multiple first slide block successively, the σ of the upper end edge rectangle loading plate of the second draw runner
3direction is arranged with multiple second slide block successively, and the first slide block is overlapped on the top of the second slide block, and keeps certain gap, to ensure that sample is at σ
1the compression deformation in direction, when preventing from loading, sample embeds space of slider simultaneously, and the first slide block and the second slide block are all by ball σ along rectangle loading plate on respective corresponding draw runner
3direction is free to slide.
Geotechnological true triaxial test as above two-way micro tribology load force transmitting board, the two ends of the first draw runner are respectively provided with one block of wing plate, second draw runner distance a distance, two ends is respectively provided with one block of wing plate, the middle part of the 3rd draw runner is provided with one block of wing plate, the wing plate of three kinds of draw runners embeds the plane that formation one has gap mutually, to ensure that three kinds of draw runners come on rectangle loading plate along σ by roller bearing
1direction is free to slide.
Geotechnological true triaxial test as above two-way micro tribology load force transmitting board, the position, both sides of rectangle loading plate is provided with side plate, uniform boring on side plate, the wing plate at the first draw runner two ends is respectively equipped with boring, by rod-like element successively through the boring on the wing plate at the first draw runner two ends and boring on side plate, with during warranty test from σ
1direction apply axle pressure time ensure force transmitting board can uprightly and side follow sample can fit tightly.
The utility model is placed on sample both sides in use, and sample is at σ
1during the compression deformation of direction, the friction resistance that can effectively reduce between micro tribology load force transmitting board and horizontal addload plate arranged by roller bearing, when sample is at σ
3during Direction distortion, multilayer slide block can reduce the friction resistance in load plate and sample contacts face, make sample can free double-deformation in surface of contact tangential direction, 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), improves the technical merit of true triaxial test.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board;
Figure 2 shows that the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board front elevation view;
Figure 3 shows that the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board side elevational view;
Fig. 4 is the slide block arrangenent diagram of the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board;
Fig. 5 is the three-dimensional structure diagram of the utility model first draw runner;
Fig. 6 is the three-dimensional structure diagram of the utility model second draw runner;
Fig. 7 is the three-dimensional structure diagram of the utility model the 3rd draw runner;
Vertical view when Fig. 8 (a) is utility model works;
Side view when Fig. 8 (b) is utility model works.
In figure: 1-rectangle loading plate, 2-chute, 21-support, 22-arc groove, 3-roller bearing is arranged, 31-rotating shaft, the 4-the first draw runner, the 5-the second draw runner, the 6-the three draw runner, 7-ball, 8-the first slide block, the 9-the second slide block, 10-side plate, 41,51,61-wing plate.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.
Figure 1 shows that the part-structure decomposing schematic representation of the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board, sample both sides are placed when described geotechnological true triaxial test two-way micro tribology load force transmitting board is used for true triaxial test, in true triaxial test, sample is subject to three groups of stress acted on mutual vertical plane, and three groups of acting forces are called large principle stress σ
1, intermediate principal stress σ
2with minor principal stress σ
3(as shown in Fig. 8 (a) and Fig. 8 (b)).
Described geotechnological true triaxial test two-way micro tribology load force transmitting board comprises rectangle loading plate 1, and the top of rectangle loading plate 1 is along σ
3interval, direction arranges multiple chute 2, and form support 21 between adjacent two chutes 2, on support 21, interval arranges multiple arc groove 22, and the arc groove 22 of all supports 21 is at σ
3direction is on same straight line.
Arrange roller bearing 3 in each arc groove 22 corresponding position in each chute 2, rotating shaft 31 is through the σ being positioned at rectangle loading plate 1
3be erected on arc groove 22 after roller bearing 3 on the same straight line in direction.The roller bearing 3 that rotating shaft 31 wears is at the σ of rectangle loading plate 1
1direction is formed roller bearing row, roller bearing row circulate successively from left to right above be provided with the first draw runner 4, second draw runner 5 and the 3rd draw runner 6, three kinds of draw runners all by the σ of roller bearing row along rectangle loading plate 1
1direction is free to slide.
The upper end of the first draw runner 4 and the 3rd draw runner 6 is all along the σ of rectangle loading plate 1
3direction is arranged with the σ of the upper end edge rectangle loading plate 1 of multiple first slide block 8, second draw runner 5 successively
3direction is provided with the top that multiple second slide block 9, first slide block 8 is overlapped on the second slide block 9 successively, and keeps certain gap, to ensure that sample is at σ
1the compression deformation in direction, when preventing from loading, sample embeds space of slider simultaneously, two kinds of slide blocks all by ball on respective corresponding draw runner along σ
3direction is free to slide.
Please also refer to Fig. 2 and Fig. 3, described geotechnological true triaxial test two-way micro tribology load force transmitting board is a length, wide, height is respectively 700mm, 350mm, the rectangular slab of 80mm, is followed successively by rectangle loading plate 1, roller bearing 3, draw runner (the first draw runner 4, second draw runner 5 and the 3rd draw runner 6), ball 7, slide block (first slide block 8 and the second slide block 9) from the bottom up.The position, both sides of rectangle loading plate 1 is provided with side plate 10, uniform 2mm boring on side plate 10.
Figure 4 shows that the arrangenent diagram of slide block in the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board, the first slide block 8 and the second slide block 9 are along σ
1direction successively interval is arranged, forms the rectangular touch plate that size is greater than specimen size.
Fig. 5, Fig. 6, Fig. 7 are respectively the perspective view of the first draw runner 4, second draw runner 5 and the 3rd draw runner 6, the two ends of the first draw runner 4 are respectively provided with one block of wing plate 41, second draw runner 5 is respectively provided with one block of wing plate 51 apart from a distance, two ends, the middle part of the 3rd draw runner 6 is provided with one block of wing plate 61, the wing plate of three kinds of draw runners embeds the plane that formation one has gap mutually, to ensure that three kinds of draw runners come on rectangle loading plate 1 along σ by roller bearing
1direction is free to slide.
Be respectively equipped with wing plate 41 bottom the two ends of the first draw runner 4, the wing plate 41 that the second draw runner 5 is provided with one block of wing plate 61, first draw runner 4 two ends apart from the middle part that a distance, two ends is respectively provided with one block of wing plate the 51, three draw runner 6 is respectively equipped with boring.During test, the first draw runner 4 is fixed by rod-like element with side plate 10, namely pass the boring on the wing plate 41 at the first draw runner 4 two ends and the boring on side plate 10 successively, to ensure that draw runner is along σ by rod-like element
1direction evenly has spaced apart in sample side.
Schematic diagram during utility model works refers to Fig. 8 (a) and Fig. 8 (b), and in true triaxial test, sample is subject to three groups of stress acted on mutual vertical plane, and three groups of acting forces are called large principle stress σ
1, intermediate principal stress σ
2with minor principal stress σ
3, the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board is placed on sample both sides, bears intermediate principal stress σ
2, the multilayer slide block (the first slide block 8 and the second slide block 9) in geotechnological true triaxial test two-way micro tribology load force transmitting board directly contacts with sample, when sample is at σ
3during Direction distortion, multilayer slide block can reduce the friction resistance in load plate and sample contacts face, and sample is at σ
1during the compression deformation of direction, the friction resistance that can effectively reduce between micro tribology load force transmitting board and horizontal addload plate arranged by roller bearing, makes sample can free double-deformation in surface of contact tangential direction.Therefore, the utility model geotechnique's true triaxial test two-way micro tribology load force transmitting board, 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), improves the technical merit of true triaxial test.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly belong to those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (5)
1. a geotechnological true triaxial test two-way micro tribology load force transmitting board, for placing sample both sides during true triaxial test, in true triaxial test, sample is subject to three groups of stress acted on mutual vertical plane, and three groups of acting forces are called large principle stress σ
1, intermediate principal stress σ
2with minor principal stress σ
3, it is characterized in that: described geotechnological true triaxial test two-way micro tribology load force transmitting board comprises rectangle loading plate (1), and the top of rectangle loading plate (1) is provided with can along σ
1the roller bearing row rolled in direction, along σ on roller bearing row
1direction is cycle arrangement first draw runner (4), the second draw runner (5) and the 3rd draw runner (6) successively, along the σ of rectangle loading plate on the first draw runner (4), the second draw runner (5) and the 3rd draw runner (6)
3direction is provided with slide block successively, and slide block is logical can along σ on the first draw runner (4), the second draw runner (5) and the 3rd draw runner (6)
3direction is free to slide, and the slide block on the first draw runner (4), the second draw runner (5) and the 3rd draw runner (6) is combined into the rectangular touch plate that is greater than specimen size, for directly contacting with sample.
2. geotechnological true triaxial test as claimed in claim 1 two-way micro tribology load force transmitting board, is characterized in that: the top of rectangle loading plate (1) is along σ
3interval, direction arranges multiple chute (2), support (21) is formed between adjacent two chutes (2), the upper interval of support (21) arranges multiple arc groove (22), and the arc groove (22) of all supports (21) is at σ
3direction is on same straight line, arranges roller bearing (3) in each chute (2) in each arc groove (22) corresponding position, and rotating shaft (31) is through the σ being positioned at rectangle loading plate (1)
3be erected at after roller bearing (3) on the same straight line in direction on arc groove (22), the roller bearing (3) that rotating shaft (31) wears is at σ
1direction is formed described roller bearing row.
3. geotechnological true triaxial test as claimed in claim 1 two-way micro tribology load force transmitting board, is characterized in that: the upper end of the first draw runner (4) and the 3rd draw runner (6) is all along the σ of rectangle loading plate (1)
3direction is arranged with multiple first slide block (8) successively, the σ of the upper end edge rectangle loading plate (1) of the second draw runner (5)
3direction is provided with multiple second slide block (9) successively, and the first slide block (8) is overlapped on the top of the second slide block (9), and keeps certain gap, to ensure that sample is at σ
1the compression deformation in direction, when preventing from loading, sample embeds space of slider simultaneously, and the first slide block (8) and the second slide block (9) are all by ball (7) σ along rectangle loading plate (1) on respective corresponding draw runner
3direction is free to slide.
4. geotechnological true triaxial test as claimed in claim 1 two-way micro tribology load force transmitting board, it is characterized in that: the two ends of the first draw runner (4) are respectively provided with one piece of wing plate (41), second draw runner (5) distance a distance, two ends is respectively provided with one piece of wing plate (51), the middle part of the 3rd draw runner (6) is provided with one piece of wing plate (61), the wing plate of three kinds of draw runners embeds the plane that formation one has gap mutually, to ensure that three kinds of draw runners come on rectangle loading plate (1) along σ by roller bearing
1direction is free to slide.
5. geotechnological true triaxial test as claimed in claim 4 two-way micro tribology load force transmitting board, it is characterized in that: the position, both sides of rectangle loading plate (1) is provided with side plate (10), the upper uniform boring of side plate (10), the wing plate (41) at the first draw runner (4) two ends is respectively equipped with boring, by rod-like element successively through the boring on the wing plate (41) at the first draw runner (4) two ends and boring on side plate (10), during to apply axle pressure during warranty test from σ 1 direction, ensure that force transmitting board can uprightly and side follows sample to fit tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520613876.3U CN204831924U (en) | 2015-08-14 | 2015-08-14 | Two -way load that rubs a little of real triaxial test of geotechnique passes power board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520613876.3U CN204831924U (en) | 2015-08-14 | 2015-08-14 | Two -way load that rubs a little of real triaxial test of geotechnique passes power board |
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| Publication Number | Publication Date |
|---|---|
| CN204831924U true CN204831924U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520613876.3U Withdrawn - After Issue CN204831924U (en) | 2015-08-14 | 2015-08-14 | Two -way load that rubs a little of real triaxial test of geotechnique passes power board |
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| CN (1) | CN204831924U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021461A (en) * | 2015-08-14 | 2015-11-04 | 长江水利委员会长江科学院 | Bidirectional micro-friction load force transmission plate for soil engineering true triaxial test |
-
2015
- 2015-08-14 CN CN201520613876.3U patent/CN204831924U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021461A (en) * | 2015-08-14 | 2015-11-04 | 长江水利委员会长江科学院 | Bidirectional micro-friction load force transmission plate for soil engineering true triaxial test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20170623 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20170623 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |