CN210375913U - Dynamic triaxial test inviscid soil sample loading mold - Google Patents
Dynamic triaxial test inviscid soil sample loading mold Download PDFInfo
- Publication number
- CN210375913U CN210375913U CN201920042632.2U CN201920042632U CN210375913U CN 210375913 U CN210375913 U CN 210375913U CN 201920042632 U CN201920042632 U CN 201920042632U CN 210375913 U CN210375913 U CN 210375913U
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- split
- sample loading
- sleeve
- chassis
- cushion block
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- 239000002689 soil Substances 0.000 title claims abstract description 56
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005527 soil sampling Methods 0.000 claims 3
- 238000000034 method Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a move experimental inviscid soil of triaxial dress appearance mould, includes: the sample loading unit is provided with an axial sample loading cavity which is communicated up and down and is used for loading a soil sample for a test; the horizontal fixing support comprises a supporting chassis and a height adjusting device, the supporting chassis is installed at the top of the base of the dynamic triaxial apparatus, a groove for clamping the sample loading unit is formed in the upper part of the horizontal fixing support, and the sample loading cavity is kept coaxial with an inner hole of the horizontal fixing support; the fixing part of the height adjusting device is arranged at the bottom of the fixed supporting component, and the adjusting part is abutted against the boss at the bottom of the movable triaxial apparatus base and used for adjusting the longitudinal height of the fixing part. The utility model has the advantages that: the stability of dress appearance has been improved, has reduced the manual work dress appearance to the disturbance of soil sample, has prevented scattered soil to the pollution of pressure chamber, has solved the problem that dynamic triaxial apparatus base does not have suitable dress appearance mould.
Description
Technical Field
The utility model relates to a move triaxial test inviscid soil dress appearance mould.
Background
The dynamic triaxial test belongs to the content of dynamic test of soil, and is a method which is commonly adopted when the dynamic characteristics of soil are carried out indoors. The dynamic characteristics of soil mainly refer to the deformation characteristics and the strength characteristics of soil, the deformation characteristics are dynamic stress-strain relationship, and the strength problem includes the vibration liquefaction strength of liquefiable soil besides the general strength of soil.
The test content includes two aspects: (1) determining the dynamic strength of soil for analyzing the stability of foundation and structure under large deformation condition, especially the vibration liquefaction problem of soil; (2) and determining the shear modulus and the damping ratio to calculate the change of displacement, speed, acceleration or stress of the soil body in a certain range along with time under the condition of small deformation. Selectable nominal range of sample size for a dynamic triaxial apparatus: 39.8mm,50mm,70mm and 100mm, and the maximum can be 150 mm.
The triaxial test of geotechnique needs the soil sample to be standard cylinder type, and to inviscid soil especially, because the cohesive force between the soil granule is very weak, inviscid soil sample is very easily because of artifical disturbance scatters under the natural state, and is very big to the precision of test result, therefore has proposed the demand to inviscid soil sample fixed die.
Undisturbed soil test sample preparation, namely, cutting an undisturbed soil sample into a specified size by using a wire saw or a soil cutter, wrapping the undisturbed soil sample by using a rubber film, and installing the undisturbed soil sample on a dynamic triaxial apparatus for test by using a split film; the remolding cohesive soil test is finished under a special instrument, and the remolding film is mounted on a dynamic triaxial instrument for testing after being wrapped by a rubber film; in the case of the clay without stickiness, since the sample is soft and not easy to be formed due to the stickiness among the grains, the sample must be loaded by a fixed mold.
In the prior art, the effect of fixing a sample is achieved by manually fixing split membranes, and sand is very easy to disturb and enter a pressure chamber to cause pollution of the pressure chamber in the process; the sample disturbance leads to sandy soil particle loss, and stress concentration is easy to generate, so that the influence on the test result is large, and no proper mould for fixing the sample is available for the dynamic triaxial apparatus bases of 39.8mm,50mm and 70 mm.
Disclosure of Invention
In order to solve the problem, the utility model provides an improve the stability of dress appearance reduces artifical dress appearance to the disturbance of soil sample, prevents the soil that scatters to the pollution of pressure chamber and solve and move the dynamic triaxial test inviscid soil dress appearance mould that triaxial apparatus base does not have suitable dress appearance mould.
Move triaxial test inviscid soil dress appearance mould, a serial communication port, include:
the sample loading unit is provided with an axial sample loading cavity which is communicated up and down and is used for loading a soil sample for a test;
the horizontal fixing support comprises a supporting chassis and a height adjusting device, the supporting chassis is installed at the top of the base of the dynamic triaxial apparatus, a groove for clamping the sample loading unit is formed in the upper part of the horizontal fixing support, and the sample loading cavity is kept coaxial with an inner hole of the horizontal fixing support; the fixing part of the height adjusting device is arranged at the bottom of the fixed supporting component, and the adjusting part is abutted against the boss at the bottom of the movable triaxial apparatus base and used for adjusting the longitudinal height of the fixing part.
The sample loading unit comprises a spliced sleeve for loading samples and a handle arranged outside the spliced sleeve, the spliced sleeve is a cylindrical structure spliced by a plurality of valves, the upper part and the lower part of the spliced sleeve are open, and the axial inner cavity of the spliced sleeve is an axial sample loading cavity of the sample loading unit; the handle is arranged outside the splicing sleeve.
The outer wall of the splicing sleeve is provided with a plurality of annular grooves along the axial direction, and each annular groove is distributed along the radial direction of the splicing sleeve.
The supporting base plate comprises a split cushion block, a split base plate and a fixing bolt, the split cushion block and the split base plate are of annular structures, and the split cushion block is coaxially stacked on the surface of the split base plate; the upper end face of the split cushion block is provided with an axial step hole for inserting the lower end of the split sleeve; the split chassis is installed on the top of the base of the dynamic triaxial apparatus through a fixing bolt.
The split cushion block is of an annular structure formed by splicing two semicircular rings, an axial step hole of the annular structure is a secondary step hole with a large upper part and a small lower part, the upper section of the axial step hole is inserted into the split sleeve, and the lower section of the axial step hole is sleeved at the top of the base of the dynamic triaxial apparatus; the outer side wall of the split cushion block is provided with an annular step surface used for being matched with the edge of the split chassis.
The diameter of the upper section of the secondary stepped hole is equal to the outer diameter of the lower end of the splicing sleeve, and the diameter of the lower section of the secondary stepped hole is equal to the inner diameter of the lower end of the splicing sleeve.
And equidistant grooves for clamping the rubber film are formed in the inner peripheral surface of the upper section of the axial stepped hole.
The split chassis is of a circular ring structure formed by splicing two semicircular rings, and bolt holes for mounting fixing bolts are formed in the split chassis; the upper end face of the split type chassis is attached to the lower end face of the split type cushion block, and an annular support groove for inserting the lower end of the split type cushion block is formed in the split type chassis.
The height adjusting device comprises a plurality of supports and adjusting bolts arranged at the bottoms of the supports, the tops of the supports are fixedly connected with the lower end face of the split chassis, so that the split chassis is horizontally arranged at the tops of the supports, the bottom end of each support is in threaded connection with one longitudinally arranged adjusting bolt, and the longitudinal height of the whole height adjusting device is adjusted by adjusting the longitudinal threaded connection height of the adjusting bolts.
The sample loading unit further comprises a rubber film, wherein the rubber film is attached to the inner wall of the splicing sleeve, and the upper end and the lower end of the rubber film both exceed the upper end and the lower end of the splicing sleeve.
Utilize a method that moves triaxial test inviscid soil dress appearance mould and adorn appearance, including following step:
1) screwing down the fixing bolt, placing the horizontal fixing support on the movable triaxial apparatus base, and adjusting the adjusting bolt to enable the height of the split type chassis to be the same as that of the movable triaxial apparatus base;
2) placing the split cushion blocks on the annular support groove of the horizontal fixed support to ensure that the split cushion blocks are attached to the annular support groove without errors;
3) sleeving a rubber film on the prepared sandy soil sample to avoid soil body scattering;
4) respectively placing a piece of filter paper and a piece of permeable stone at the bottom and the top of the sandy soil sample, wherein the diameter of the filter paper and the permeable stone is equal to that of the sample;
5) wrapping the sample by using a splicing sleeve, and turning the rubber films with redundant lengths at two ends outwards to the end parts of the splicing sleeve;
6) placing the sample wrapped by the splicing sleeve on the split cushion block, and confirming that the splicing sleeve is attached to equidistant grooves on the inner circumferential surface of the split cushion block without errors;
7) adjusting a pressure cap of the dynamic triaxial apparatus to make the pressure cap contact with a sample, sleeving an everted rubber film on the pressure cap, and binding a rubber belt to tighten the rubber film;
8) and (4) unscrewing the fixing bolt, dismantling the mould, taking down the split type chassis, turning up the rubber film at the lower end of the sample, sleeving the rubber film on the base of the triaxial apparatus, and externally binding a rubber belt for fixing.
9) And (5) completing sample loading.
The utility model has the advantages that: the stability of dress appearance has been improved, has reduced the manual work dress appearance to the disturbance of soil sample, has prevented scattered soil to the pollution of pressure chamber, has solved the problem that dynamic triaxial apparatus base does not have suitable dress appearance mould.
Drawings
Fig. 1 is a second schematic cross-sectional view of the present invention.
Fig. 2 is a second cross-sectional view of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic cross-sectional view (with a base) of the present invention.
Fig. 5 is a schematic elevation view (horizontal fixing bracket) of the present invention.
Fig. 6 is a schematic top view of the present invention (split spacer).
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
With reference to the accompanying drawings:
embodiment 1 a move triaxial test inviscid soil dress appearance mould, include:
the sample loading unit 1 is provided with an axial sample loading cavity which is communicated up and down and is used for loading a soil sample for a test;
the horizontal fixing support 2 comprises a supporting chassis 21 and a height adjusting device 22, the supporting chassis is installed at the top of the movable triaxial apparatus base 3, a groove for clamping a sample loading unit is formed in the upper portion of the horizontal fixing support 2, and a sample loading cavity is kept coaxial with an inner hole of the horizontal fixing support; the fixing part of the height adjusting device 22 is arranged at the bottom of the fixed supporting component 21, and the adjusting part is abutted against the bottom boss 31 of the dynamic triaxial apparatus base 3 and is used for adjusting the longitudinal height of the fixing part.
The sample loading unit 1 comprises a spliced sleeve 11 for loading samples and a handle 12 arranged outside the spliced sleeve, the spliced sleeve 11 is of a cylindrical structure spliced by a plurality of valves, the upper part and the lower part of the spliced sleeve are open, and the axial inner cavity of the spliced sleeve is an axial sample loading cavity of the sample loading unit; the handle 12 is disposed outside the split sleeve.
The outer wall of the splicing sleeve 11 is provided with a plurality of annular grooves 111 along the axial direction, each annular groove is distributed along the radial direction of the splicing sleeve, and the inner wall grooves are convenient for fixing the rubber film and are not easy to move.
The supporting chassis 21 comprises a split-type cushion block 211, a split-type chassis 212 and a fixing bolt 213, the split-type cushion block 211 and the split-type chassis 212 are both of annular structures, and the split-type cushion block 211 is coaxially stacked on the surface of the split-type chassis 212; the upper end face of the split cushion block 211 is provided with an axial step hole for inserting the lower end of the split sleeve; the split chassis 212 is arranged at the top of the dynamic triaxial apparatus base 3; the fixing bolt 213 is used for connecting the two semicircular rings to form a complete fixing chassis, and then the fixing chassis is placed on the top of the movable triaxial apparatus base, so that the whole sample loading mould and the movable triaxial apparatus base are connected without any measures.
The split cushion block 211 is a circular ring structure formed by splicing two semicircular rings, an axial step hole of the circular ring structure is a secondary step hole with a large upper part and a small lower part, wherein the upper section of the axial step hole is inserted into the split sleeve 11, and the lower section of the axial step hole is sleeved at the top of the dynamic triaxial apparatus base 3; the outer side wall of the split type cushion block 211 is provided with an annular step surface used for being matched with the edge of the split type chassis.
The diameter of the upper section of the secondary stepped hole is equal to the outer diameter of the lower end of the splicing sleeve, and the diameter of the lower section of the secondary stepped hole is equal to the inner diameter of the lower end of the splicing sleeve.
The inner peripheral surface of the upper section of the axial step hole is provided with equidistant grooves 2121 for clamping a rubber film.
The detachable chassis 212 is a circular ring structure formed by splicing two semicircular rings, and bolt holes 2121 for installing fixing bolts are formed in the detachable chassis; the upper end face of the split chassis is attached to the lower end face of the split cushion block, and an annular support groove 2122 for inserting the lower end of the split cushion block is formed in the split chassis.
The height adjusting device 22 comprises a plurality of supports 221 and adjusting bolts 222 arranged at the bottoms of the supports, the tops of the supports 221 are fixedly connected with the lower end face of the detachable chassis 212, so that the detachable chassis 212 is horizontally erected at the tops of the supports 221, the bottom end of each support 221 is in threaded connection with one longitudinally-arranged adjusting bolt 222, and the longitudinal height of the whole height adjusting device is adjusted by adjusting the longitudinal threaded height of the adjusting bolts 222.
Dress appearance unit 1 still includes rubber membrane 13, and wherein rubber membrane 13 pastes and covers at splicing sleeve inner wall to the upper end and the lower extreme of rubber membrane all surpass splicing sleeve's upper end and lower extreme.
Embodiment 2 a move triaxial test inviscid soil dress appearance mould in: the split base is composed of two semicircular rings, grooves with equal distance are arranged on the inner peripheral surface, and the grooves of the base are used for clamping the cushion block to prevent the cushion block from moving; the outer diameter of the split base is slightly larger than that of the split cushion block, and the inner diameter of the split base is larger than that of the split cushion block, namely the diameter of the split sleeve; the split cushion block consists of two semicircular rings, the inner circumferential surface and the outer circumferential surface of the split cushion block are respectively provided with equidistant grooves, and the equidistant grooves are radially arranged; the outer wall of the split cushion block is attached to the inner wall of the annular support groove of the split base, and the outer diameter of the lower step of the split cushion block is equal to the outer diameter of the annular support groove of the split base; the inner edge of the upper section of the axial step hole of the split cushion block is attached to the outer wall of the insertion section of the splicing sleeve, and the step surface width of the split cushion block is equal to the thickness of the inner wall of the splicing sleeve; the splicing sleeve is composed of two semicircular arc split molds; the support comprises 3 hollow cylinders, and adjusting bolt and support lower extreme spiro union.
Two bolt holes are symmetrically arranged on the split base.
The sample loading unit further comprises rubber films, and the rubber films are arranged on the inner circumferential surface of the central cylindrical part of the splicing sleeve and the outer circumferential surface of the movable triaxial apparatus base.
The split base is composed of two semicircular rings and is connected through a fixing bolt.
The support comprises 3 hollow cylinders, becomes equilateral triangle and arranges, is convenient for stabilize the sample.
The adjusting bolt is in threaded connection with the support, so that the height of the whole fixed die can be adjusted conveniently according to the diameter of the sample.
Equidistant grooves are formed in the inner peripheral surface of the split type cushion block, so that the split type sleeve can be clamped conveniently, and disturbance is avoided.
The horizontal fixing bracket is made of carbon steel.
Example 4 a dynamic triaxial test inviscid soil dress appearance mould, as shown in attached figure 1-6, take the sand soil sample of height 80mm, diameter 39.8mm as the example. The inner diameter of the splicing sleeve is 39.8 mm; the inner diameter of the split cushion block is 39.8mm, and the width of the equidistant groove is 4.2 mm; the outer diameter of the split cushion block is 60.22mm, and the width of the outer step surface of the split cushion block is 10.16 mm; the inner diameter of the split base is 41.72mm, and the outer diameter of the split base is 60.22 mm; the height of the support is 88.86mm, and the height of the adjusting bolt is 40 mm; the horizontal fixing brackets are all made of carbon steel.
Embodiment 5 utilizes a method for loading a sample by a dynamic triaxial test inviscid soil sample loading mold, comprising the following steps:
1) screwing down the fixing bolt, placing the horizontal fixing support on the movable triaxial apparatus base, and adjusting the adjusting bolt to enable the height of the split type chassis to be the same as that of the movable triaxial apparatus base;
2) placing the split cushion blocks on the annular support groove of the horizontal fixed support to ensure that the split cushion blocks are attached to the annular support groove without errors;
3) sleeving a rubber film on the prepared sandy soil sample to avoid soil body scattering;
4) respectively placing a piece of filter paper and a piece of permeable stone at the bottom and the top of the sandy soil sample, wherein the diameter of the filter paper and the permeable stone is equal to that of the sample;
5) wrapping the sample by using a splicing sleeve, and turning the rubber films with redundant lengths at two ends outwards to the end parts of the splicing sleeve;
6) placing the sample wrapped by the splicing sleeve on the split cushion block, and confirming that the splicing sleeve is attached to equidistant grooves on the inner circumferential surface of the split cushion block without errors;
7) adjusting a pressure cap of the dynamic triaxial apparatus to make the pressure cap contact with a sample, sleeving an everted rubber film on the pressure cap, and binding a rubber belt to tighten the rubber film;
8) and (4) unscrewing the fixing bolt, dismantling the mould, taking down the split type chassis, turning up the rubber film at the lower end of the sample, sleeving the rubber film on the base of the triaxial apparatus, and externally binding a rubber belt for fixing.
9) And (5) completing sample loading.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated, the terms "mounted," "fixed," and "connected" are to be construed broadly, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.
The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments, but rather the scope of the invention includes equivalent technical means that can be conceived by those skilled in the art based on the inventive concepts.
Claims (10)
1. The utility model provides a move triaxial test inviscid soil dress appearance mould which characterized in that includes:
the sample loading unit is provided with an axial sample loading cavity which is communicated up and down and is used for loading a soil sample for a test;
the horizontal fixing support comprises a supporting chassis and a height adjusting device, the supporting chassis is installed at the top of the base of the dynamic triaxial apparatus, a groove for clamping the sample loading unit is formed in the upper part of the horizontal fixing support, and the sample loading cavity is kept coaxial with an inner hole of the horizontal fixing support; the fixing part of the height adjusting device is arranged at the bottom of the fixed supporting component, and the adjusting part is abutted against the boss at the bottom of the movable triaxial apparatus base and used for adjusting the longitudinal height of the fixing part.
2. The dynamic triaxial test inviscid soil sample loading mold according to claim 1, wherein: the sample loading unit comprises a spliced sleeve for loading samples and a handle arranged outside the spliced sleeve, the spliced sleeve is a cylindrical structure spliced by a plurality of valves, the upper part and the lower part of the spliced sleeve are open, and the axial inner cavity of the spliced sleeve is an axial sample loading cavity of the sample loading unit; the handle is arranged outside the splicing sleeve.
3. The dynamic triaxial test inviscid soil sample loading mold according to claim 2, wherein: the outer wall of the splicing sleeve is provided with a plurality of annular grooves along the axial direction, and each annular groove is distributed along the radial direction of the splicing sleeve.
4. The dynamic triaxial test inviscid soil sample loading mold according to claim 1, wherein: the supporting base plate comprises a split cushion block, a split base plate and a fixing bolt, the split cushion block and the split base plate are of annular structures, and the split cushion block is coaxially stacked on the surface of the split base plate; the upper end face of the split cushion block is provided with an axial step hole for inserting the lower end of the split sleeve; the split chassis is installed on the top of the base of the dynamic triaxial apparatus through a fixing bolt.
5. The dynamic triaxial test inviscid soil sample loading mold according to claim 4, wherein: the split cushion block is of an annular structure formed by splicing two semicircular rings, an axial step hole of the annular structure is a secondary step hole with a large upper part and a small lower part, the upper section of the axial step hole is inserted into the split sleeve, and the lower section of the axial step hole is sleeved at the top of the base of the dynamic triaxial apparatus; the outer side wall of the split cushion block is provided with an annular step surface used for being matched with the edge of the split chassis.
6. The dynamic triaxial test cohesionless soil sampling mold of claim 5, wherein: the diameter of the upper section of the secondary stepped hole is equal to the outer diameter of the lower end of the splicing sleeve, and the diameter of the lower section of the secondary stepped hole is equal to the inner diameter of the lower end of the splicing sleeve.
7. The dynamic triaxial test inviscid soil sample loading mold according to claim 6, wherein: and equidistant grooves for clamping the rubber film are formed in the inner peripheral surface of the upper section of the axial stepped hole.
8. The dynamic triaxial test cohesionless soil sampling mold of claim 7, wherein: the split chassis is of a circular ring structure formed by splicing two semicircular rings, and bolt holes for mounting fixing bolts are formed in the split chassis; the upper end face of the split type chassis is attached to the lower end face of the split type cushion block, and an annular support groove for inserting the lower end of the split type cushion block is formed in the split type chassis.
9. The dynamic triaxial test cohesionless soil sampling mold of claim 7, wherein: the height adjusting device comprises a plurality of supports and adjusting bolts arranged at the bottoms of the supports, the tops of the supports are fixedly connected with the lower end face of the split chassis, so that the split chassis is horizontally arranged at the tops of the supports, the bottom end of each support is in threaded connection with one longitudinally arranged adjusting bolt, and the longitudinal height of the whole height adjusting device is adjusted by adjusting the longitudinal threaded connection height of the adjusting bolts.
10. The dynamic triaxial test inviscid soil sample loading mold according to claim 2, wherein: the sample loading unit further comprises a rubber film, wherein the rubber film is attached to the inner wall of the splicing sleeve, and the upper end and the lower end of the rubber film both exceed the upper end and the lower end of the splicing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920042632.2U CN210375913U (en) | 2019-01-10 | 2019-01-10 | Dynamic triaxial test inviscid soil sample loading mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920042632.2U CN210375913U (en) | 2019-01-10 | 2019-01-10 | Dynamic triaxial test inviscid soil sample loading mold |
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| Publication Number | Publication Date |
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| CN210375913U true CN210375913U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920042632.2U Expired - Fee Related CN210375913U (en) | 2019-01-10 | 2019-01-10 | Dynamic triaxial test inviscid soil sample loading mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827831A (en) * | 2019-01-10 | 2019-05-31 | 浙江工业大学 | A kind of dynamic triaxial tests cohesiveless soil dress original mold tool |
-
2019
- 2019-01-10 CN CN201920042632.2U patent/CN210375913U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827831A (en) * | 2019-01-10 | 2019-05-31 | 浙江工业大学 | A kind of dynamic triaxial tests cohesiveless soil dress original mold tool |
| CN109827831B (en) * | 2019-01-10 | 2024-01-16 | 浙江工业大学 | Non-cohesive soil sample loading die for dynamic triaxial test |
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