Anti-disturbance triaxial test specimen installation device

Abstract

This invention discloses a disturbance-resistant triaxial test specimen mounting device, belonging to the technical field of triaxial test specimen mounting devices. The first arc-shaped clamping device includes a first upper arc-shaped portion, a first middle arc-shaped portion, and a first lower arc-shaped portion arranged coaxially. The second arc-shaped clamping device includes a second upper arc-shaped portion, a second middle arc-shaped portion, and a second lower arc-shaped portion arranged coaxially. One end of each of the second upper, middle, and lower arc-shaped portions is fixedly connected to a second rotating column. An upper locking device brings the first and second upper arc-shaped portions closer together to clamp the triaxial apparatus specimen top cap. A middle locking device brings the first and second middle arc-shaped portions closer together to clamp the split-type film-bearing cylinder. A lower locking device brings the first and second lower arc-shaped portions closer together to clamp the triaxial apparatus specimen base. This avoids disturbance to the specimen during triaxial test specimen mounting, improving the accuracy of test results.

Description

Technical Field

[0001] The invention relates to the technical field of triaxial test specimen installation devices, and in particular to an anti-disturbance triaxial test specimen installation device. Background Art

[0002] The triaxial test generally refers to the triaxial compression test, which refers to the confined compression and shear test. The instrument used is a triaxial instrument. The soil sample used in the test is cylindrical. The sample is wrapped with a thin rubber membrane to completely separate the pore water of the soil sample from the liquid (water) outside the membrane. Under the given pressure around the triaxial pressure chamber, the axial additional pressure is continuously increased until the sample is sheared. According to the Mohr strength theory, the normal stress and the ultimate shear stress on the shear surface are calculated. The stress distribution in the triaxial sample is relatively uniform, which can be used to study the shear strength characteristics of the soil under complex stress conditions.

[0003] The conventional practice for installing triaxial test specimens is generally:

[0004] (1) Pass the rubber film through the film tube and inhale air from the air intake hole to make the rubber film close to the inner wall of the film tube;

[0005] (2) Put the membrane tube and rubber membrane on the prepared soil sample;

[0006] (3) Place the soil sample and the membrane tube on the triaxial tester specimen base, turn over the lower end of the rubber membrane to wrap the base, and use a rubber ring to tie the rubber membrane and the base tightly, turn over the upper end of the rubber membrane and remove the membrane tube;

[0007] (4) Use a split circular mold to clamp the specimen, flip the upper end of the rubber membrane over and put it on the split circular mold, install the triaxial instrument specimen top cap, flip the upper end of the rubber membrane over to wrap the top cap, and fasten the rubber membrane and the top cap with a rubber ring.

[0008] Conventional practice is that the soil sample will be disturbed in the process of wrapping the rubber film around the base and tying the rubber film and the base tightly with a rubber ring. In the process of wrapping the rubber film around the top cap, the soil sample needs to be fixed with a split circular mold and the rubber film needs to be turned over again to cover the mold. Multiple turns of the rubber film will also cause disturbance of the soil sample and thus affect the test results, especially for the original soft soil test, which will greatly affect the test results. Summary of the invention

[0009] The purpose of the present invention is to provide an anti-disturbance triaxial test specimen installation device to solve the problems existing in the above-mentioned prior art, avoid disturbance of the specimen during the installation process of the triaxial test specimen, and improve the accuracy of the test results.

[0010] To achieve the above object, the present invention provides the following solutions:

[0011] The present invention provides an anti-disturbance triaxial test specimen installation device, comprising a first arc-shaped clamping device and a second arc-shaped clamping device;

[0012] The first arc-shaped clamping device comprises a first upper arc-shaped portion, a first middle arc-shaped portion and a first lower arc-shaped portion which are coaxially arranged, the arc openings of the first upper arc-shaped portion, the first middle arc-shaped portion and the first lower arc-shaped portion are oriented in the same direction, the first middle arc-shaped portion is located between the first upper arc-shaped portion and the first lower arc-shaped portion, one end of the first upper arc-shaped portion, the first middle arc-shaped portion and the first lower arc-shaped portion are fixedly connected to a first rotating column, the other ends of the first upper arc-shaped portion, the first middle arc-shaped portion and the first lower arc-shaped portion are fixedly connected to a first fixed column, and the first rotating column and the first fixed column are parallel to the axis of the first upper arc-shaped portion;

[0013] The second arc-shaped clamping device comprises a second upper arc-shaped portion, a second middle arc-shaped portion and a second lower arc-shaped portion which are coaxially arranged, the arc openings of the second upper arc-shaped portion, the second middle arc-shaped portion and the second lower arc-shaped portion are oriented in the same direction, the second middle arc-shaped portion is located between the second upper arc-shaped portion and the second lower arc-shaped portion, one end of the second upper arc-shaped portion, the second middle arc-shaped portion and the second lower arc-shaped portion are fixedly connected to the second rotating column, the other ends of the second upper arc-shaped portion, the second middle arc-shaped portion and the second lower arc-shaped portion are fixedly connected to the second fixed column, and the second rotating column and the second fixed column are parallel to the axis of the second upper arc-shaped portion;

[0014] The first rotating column and the second rotating column are rotatably connected around a rotating axis, and the rotating axis is parallel to the first rotating column;

[0015] The arc radii of the first upper arc portion and the second upper arc portion are equal, and the first upper arc portion and the second upper arc portion can be brought close to each other through the upper locking device to clamp the top cap of the triaxial instrument sample; the arc radii of the first middle arc portion and the second middle arc portion are equal, and the first middle arc portion and the second middle arc portion can be brought close to each other through the middle locking device to clamp the split-type membrane cylinder; the arc radii of the first lower arc portion and the second lower arc portion are equal, and the first lower arc portion and the second lower arc portion can be brought close to each other through the lower locking device to clamp the triaxial instrument sample base.

[0016] Preferably, the first rotating column and the second rotating column are rotatably connected via a hinge.

[0017] Preferably, the upper locking device includes two upper hanging ears and an upper locking bolt, and the two upper hanging ears are respectively fixedly arranged on the outer walls of the first fixing column and the second fixing column, and the upper locking bolt can be connected and fastened to the two upper hanging ears so that the first upper arc-shaped portion and the second upper arc-shaped portion are close to each other to clamp the top cap of the triaxial instrument specimen; the middle locking device includes two middle hanging ears and a middle locking bolt, and the two middle hanging ears are respectively fixedly arranged on the outer walls of the first fixing column and the second fixing column, and the middle locking bolt can be connected and fastened to the two middle hanging ears so that the first middle arc-shaped portion and the second middle arc-shaped portion are close to each other to clamp the split-type membrane bearing cylinder; the lower locking device includes two lower hanging ears and a lower locking bolt, and the two lower hanging ears are respectively fixedly arranged on the outer walls of the first fixing column and the second fixing column, and the lower locking bolt can be connected and fastened to the two lower hanging ears so that the first lower arc-shaped portion and the second lower arc-shaped portion are close to each other to clamp the triaxial instrument specimen base.

[0018] Preferably, the outer side surfaces of the first upper arc portion, the first middle arc portion and the first lower arc portion are all arc-shaped surfaces, and the outer side surfaces of the first upper arc portion, the first middle arc portion and the first lower arc portion are smoothly transitioned to the outer side surface of the first rotating column.

[0019] Preferably, the outer side surfaces of the second upper arc portion, the second middle arc portion and the second lower arc portion are all arc-shaped surfaces, and the outer side surfaces of the second upper arc portion, the second middle arc portion and the second lower arc portion are all smoothly connected to the outer side surface of the second rotating column.

[0020] Preferably, the outer side surface and the inner side surface of the first rotating column are both arc-shaped surfaces, the wall thickness of each part of the first rotating column is equal, and the radius of the outer side surface of the first rotating column is equal to the radius of the outer side surface of the first upper arc-shaped portion.

[0021] Preferably, the outer side surface and the inner side surface of the second rotating column are both arc-shaped surfaces, the wall thickness of each part of the second rotating column is equal, and the radius of the outer side surface of the second rotating column is equal to that of the outer side surface of the second upper arc-shaped portion.

[0022] Preferably, the outer side surface and the inner side surface of the first fixed column are both arc-shaped surfaces, the wall thickness of each part of the first fixed column is equal, and the radius of the outer side surface of the first fixed column is equal to that of the outer side surface of the first rotating column.

[0023] Preferably, the outer side surface and the inner side surface of the second fixed column are both arc-shaped surfaces, the wall thickness of each part of the second fixed column is equal, and the radius of the outer side surface of the second fixed column is equal to that of the outer side surface of the second rotating column.

[0024] Compared with the prior art, the present invention has achieved the following technical effects:

[0025] The present invention provides a disturbance-proof triaxial test specimen installation device. When installing the triaxial test specimen, after the rubber film passes through a split-type film-bearing cylinder and the rubber film is tightly attached to the inner wall of the split-type film-bearing cylinder, the split-type film-bearing cylinder is sleeved on the outer side of the specimen, the specimen and the split-type film-bearing cylinder are placed together on a triaxial instrument specimen base, and a triaxial instrument specimen top cap is placed above the specimen and the split-type film-bearing cylinder. The triaxial instrument specimen top cap, the split-type film-bearing cylinder and the triaxial instrument specimen top cap are clamped and fixed by the disturbance-proof triaxial test specimen installation device provided by the present invention. The triaxial test specimen base is fixed as a whole by fixing the triaxial test specimen top cap, split film cylinder and triaxial test specimen base; the upper and lower ends of the rubber membrane are respectively turned over to cover the triaxial test specimen top cap and the triaxial test specimen base, thereby avoiding mutual movement among the triaxial test specimen top cap, split film cylinder and triaxial test specimen base, and reducing the disturbance of the specimen to the specimen during the loading process; then the anti-disturbance triaxial test specimen installation device is removed, the split film cylinder is removed, and the specimen installation is completed, thereby making the specimen test results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A structural front view of a specimen installed in the anti-disturbance triaxial test specimen installation device provided by the present invention;

[0028] Figure 2 for Figure 1 Rear view of the structure of the specimen installation device for the medium disturbance-proof triaxial test;

[0029] Figure 3 for Figure 1 The left side view of the structure of the specimen installation device for the anti-disturbance triaxial test;

[0030] Figure 4 for Figure 1 AA section view of the specimen installed in the medium anti-disturbance triaxial test specimen installation device;

[0031] Figure 5 for Figure 1 BB section view of the specimen installed in the medium disturbance-proof triaxial test specimen installation device;

[0032] In the figure: 1-first arc clamping device, 2-second arc clamping device, 3-first upper arc portion, 4-first middle arc portion, 5-first lower arc portion, 6-first rotating column, 7-first fixed column, 8-second upper arc portion, 9-second middle arc portion, 10-second lower arc portion, 11-second rotating column, 12-second fixed column, 13-upper locking device, 14-triaxial instrument specimen top cap, 15-middle locking device, 16-split film bearing cylinder, 17-lower locking device, 18-triaxial instrument specimen base, 19-upper hanging ear, 20-upper locking bolt, 21-middle hanging ear, 22-middle locking bolt, 23-lower hanging ear, 24-lower locking bolt, 25-hinge, 26-specimen, 27-rubber membrane. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The purpose of the present invention is to provide an anti-disturbance triaxial test specimen installation device to solve the problems existing in the prior art, avoid disturbance of the specimen during the installation process of the triaxial test specimen, and improve the accuracy of the test results.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 5 As shown, this embodiment provides an anti-disturbance triaxial test specimen installation device, comprising a first arc-shaped clamping device 1 and a second arc-shaped clamping device 2;

[0037] The first arc-shaped clamping device 1 comprises a first upper arc-shaped portion 3, a first middle arc-shaped portion 4 and a first lower arc-shaped portion 5 which are coaxially arranged. The arc-shaped openings of the first upper arc-shaped portion 3, the first middle arc-shaped portion 4 and the first lower arc-shaped portion 5 face the same direction. The first middle arc-shaped portion 4 is located between the first upper arc-shaped portion 3 and the first lower arc-shaped portion 5. One ends of the first upper arc-shaped portion 3, the first middle arc-shaped portion 4 and the first lower arc-shaped portion 5 are fixedly connected to the first rotating column 6. The other ends of the first upper arc-shaped portion 3, the first middle arc-shaped portion 4 and the first lower arc-shaped portion 5 are fixedly connected to the first fixed column 7. The first rotating column 6 and the first fixed column 7 are parallel to the axis of the first upper arc-shaped portion 3.

[0038] The second arc-shaped clamping device 2 comprises a second upper arc-shaped portion 8, a second middle arc-shaped portion 9 and a second lower arc-shaped portion 10 which are coaxially arranged. The arc-shaped openings of the second upper arc-shaped portion 8, the second middle arc-shaped portion 9 and the second lower arc-shaped portion 10 face the same direction. The second middle arc-shaped portion 9 is located between the second upper arc-shaped portion 8 and the second lower arc-shaped portion 10. One ends of the second upper arc-shaped portion 8, the second middle arc-shaped portion 9 and the second lower arc-shaped portion 10 are fixedly connected to a second rotating column 11. The other ends of the second upper arc-shaped portion 8, the second middle arc-shaped portion 9 and the second lower arc-shaped portion 10 are fixedly connected to a second fixed column 12. The second rotating column 11 and the second fixed column 12 are parallel to the axis of the second upper arc-shaped portion 8.

[0039] The first rotating column 6 is rotatably connected to the second rotating column 11 around a rotating axis, and the rotating axis is parallel to the first rotating column 6;

[0040] The arc radii of the first upper arc portion 3 and the second upper arc portion 8 are equal, and the first upper arc portion 3 and the second upper arc portion 8 can be brought close to each other through the upper locking device 13 to clamp the triaxial instrument sample top cap 14; the arc radii of the first middle arc portion 4 and the second middle arc portion 9 are equal, and the first middle arc portion 4 and the second middle arc portion 9 can be brought close to each other through the middle locking device 15 to clamp the split-type membrane tube 16; the arc radii of the first lower arc portion 5 and the second lower arc portion 10 are equal, and the first lower arc portion 5 and the second lower arc portion 10 can be brought close to each other through the lower locking device 17 to clamp the triaxial instrument sample base 18.

[0041] When installing the triaxial test specimen, after the rubber membrane 27 passes through the split membrane tube 16 and makes the rubber membrane 27 close to the inner wall of the split membrane tube 16, the split membrane tube 16 is put on the outside of the specimen 26, and the specimen 26 and the split membrane tube 16 are placed together on the triaxial instrument specimen base 18, and the triaxial instrument specimen top cap 14 is placed above the specimen 26 and the split membrane tube 16, and the triaxial instrument specimen top cap 14, the split membrane tube 16 and the triaxial instrument specimen base 18 are clamped and fixed by the anti-disturbance triaxial test specimen installation device provided by the present invention. The membrane cylinder 16 and the triaxial apparatus sample base 18 are fixed as a whole, and the upper and lower ends of the rubber membrane 27 are respectively turned over to cover the triaxial apparatus sample top cap 14 and the triaxial apparatus sample base 18, and the upper and lower ends of the rubber membrane 27 are respectively tightened by two rubber rings to avoid mutual movement between the triaxial apparatus sample top cap 14, the split membrane cylinder 16 and the triaxial apparatus sample base 18, thereby reducing the disturbance of the sample 26 during the loading process. Then the anti-disturbance triaxial test sample installation device is removed, the split membrane cylinder 16 is removed, and the installation of the sample 26 is completed, so that more accurate experimental results can be obtained.

[0042] like Figure 2As shown, the first rotating column 6 and the second rotating column 11 are rotatably connected via a hinge 25, which has a simple structure and is convenient to connect.

[0043] like Figures 1 to 5 As shown, the upper locking device 13 includes two upper hanging ears 19 and an upper locking bolt 20, the two upper hanging ears 19 are respectively fixedly arranged on the outer side walls of the first fixed column 7 and the second fixed column 12, and the upper locking bolt 20 can connect and tighten the two upper hanging ears 19 so that the first upper arc portion 3 and the second upper arc portion 8 are close to each other to clamp the triaxial instrument specimen top cap 14; the middle locking device 15 includes two middle hanging ears 21 and a middle locking bolt 22, the two middle hanging ears 21 are respectively fixedly arranged on the first fixed column 7 and the second fixed column 1 2, the middle locking bolt 22 can connect and tighten the two middle hanging ears 21 so that the first middle arc-shaped part 4 and the second middle arc-shaped part 9 are close to each other to clamp the split film-bearing cylinder 16; the lower locking device 17 includes two lower hanging ears 23 and a lower locking bolt 24, the two lower hanging ears 23 are respectively fixed on the outer walls of the first fixed column 7 and the second fixed column 12, and the lower locking bolt 24 can connect and tighten the two lower hanging ears 23 so that the first lower arc-shaped part 5 and the second lower arc-shaped part 10 are close to each other to clamp the triaxial instrument sample base 18. By rotating the upper locking bolt 20, the triaxial instrument sample top cap 14 can be clamped or loosened, by rotating the middle locking bolt 22, the split film-bearing cylinder 16 can be clamped or loosened, and by rotating the lower locking bolt 24, the triaxial instrument sample base 18 can be clamped or loosened, the operation is convenient and quick, and the sample installation efficiency is improved.

[0044] like Figures 4-5 As shown, the outer side surfaces of the first upper arc portion 3, the first middle arc portion 4 and the first lower arc portion 5 are all arc-shaped surfaces, and the outer side surfaces of the first upper arc portion 3, the first middle arc portion 4 and the first lower arc portion 5 are smoothly connected to the outer side surface of the first rotating column 6, so that it feels more comfortable when holding the device for operation.

[0045] like Figures 4-5 As shown, the outer side surfaces of the second upper arc portion 8, the second middle arc portion 9 and the second lower arc portion 10 are all arc-shaped surfaces, and the outer side surfaces of the second upper arc portion 8, the second middle arc portion 9 and the second lower arc portion 10 are smoothly connected to the outer side surface of the second rotating column 11, which makes it feel more comfortable when holding the device for operation.

[0046] like Figures 4-5 As shown, the outer side surface and the inner side surface of the first rotating column 6 are both arc-shaped surfaces, and the wall thickness of each part of the first rotating column 6 is equal. The radius of the outer side surface of the first rotating column 6 is equal to the radius of the outer side surface of the first upper arc-shaped portion 3. Through the above-mentioned structural arrangement, the anti-disturbance triaxial test specimen installation device provided by the present invention is subjected to more uniform force, thereby reducing the disturbance to the specimen 26 and improving the accuracy of the experiment.

[0047] like Figures 4-5 As shown, the outer side surface and the inner side surface of the second rotating column 11 are both arc-shaped surfaces, and the wall thickness of each part of the second rotating column 11 is equal. The radius of the outer side surface of the second rotating column 11 is equal to the radius of the outer side surface of the second upper arc-shaped portion 8. Through the above-mentioned structural arrangement, the anti-disturbance triaxial test specimen installation device provided by the present invention is subjected to more uniform force, thereby reducing the disturbance to the specimen 26 and improving the accuracy of the experiment.

[0048] like Figures 4-5 As shown, the outer side surface and the inner side surface of the first fixed column 7 are both arc-shaped surfaces and the wall thickness of each part of the first fixed column 7 is equal. The radius of the outer side surface of the first fixed column 7 is equal to the radius of the outer side surface of the first rotating column 6. Through the above-mentioned structural arrangement, the anti-disturbance triaxial test specimen installation device provided by the present invention is subjected to more uniform force, the disturbance to the specimen 26 is reduced, and the accuracy of the experiment is improved.

[0049] like Figures 4-5 As shown, the outer side surface and the inner side surface of the second fixed column 12 are both arc-shaped surfaces, and the wall thickness of each part of the second fixed column 12 is equal. The radius of the outer side surface of the second fixed column 12 is equal to the radius of the outer side surface of the second rotating column 11. Through the above-mentioned structural arrangement, the anti-disturbance triaxial test specimen installation device provided by the present invention is subjected to more uniform force, thereby reducing the disturbance to the specimen 26 and improving the accuracy of the experiment.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A disturbance-proof triaxial test specimen installation device, characterized in that: comprising a first arc-shaped clamping device and a second arc-shaped clamping device; The first arc-shaped clamping device comprises a first upper arc-shaped portion, a first middle arc-shaped portion and a first lower arc-shaped portion which are coaxially arranged, the arc openings of the first upper arc-shaped portion, the first middle arc-shaped portion and the first lower arc-shaped portion are oriented in the same direction, the first middle arc-shaped portion is located between the first upper arc-shaped portion and the first lower arc-shaped portion, one end of the first upper arc-shaped portion, the first middle arc-shaped portion and the first lower arc-shaped portion are fixedly connected to a first rotating column, the other ends of the first upper arc-shaped portion, the first middle arc-shaped portion and the first lower arc-shaped portion are fixedly connected to a first fixed column, and the first rotating column and the first fixed column are parallel to the axis of the first upper arc-shaped portion; The second arc-shaped clamping device comprises a second upper arc-shaped portion, a second middle arc-shaped portion and a second lower arc-shaped portion which are coaxially arranged, the arc openings of the second upper arc-shaped portion, the second middle arc-shaped portion and the second lower arc-shaped portion are oriented in the same direction, the second middle arc-shaped portion is located between the second upper arc-shaped portion and the second lower arc-shaped portion, one end of the second upper arc-shaped portion, the second middle arc-shaped portion and the second lower arc-shaped portion are fixedly connected to the second rotating column, the other ends of the second upper arc-shaped portion, the second middle arc-shaped portion and the second lower arc-shaped portion are fixedly connected to the second fixed column, and the second rotating column and the second fixed column are parallel to the axis of the second upper arc-shaped portion; The first rotating column and the second rotating column are rotatably connected around a rotating axis, and the rotating axis is parallel to the first rotating column; The arc radii of the first upper arc portion and the second upper arc portion are equal, and the first upper arc portion and the second upper arc portion can be brought close to each other through the upper locking device to clamp the top cap of the triaxial instrument sample; the arc radii of the first middle arc portion and the second middle arc portion are equal, and the first middle arc portion and the second middle arc portion can be brought close to each other through the middle locking device to clamp the split-type membrane cylinder; the arc radii of the first lower arc portion and the second lower arc portion are equal, and the first lower arc portion and the second lower arc portion can be brought close to each other through the lower locking device to clamp the triaxial instrument sample base.

2. The anti-disturbance triaxial test specimen installation device according to claim 1, characterized in that: The first rotating column and the second rotating column are rotatably connected via a hinge.

3. The anti-disturbance triaxial test specimen installation device according to claim 1, characterized in that: The two cams are connected to each other by a bolt, and the two cams are connected to the first and second cams respectively, and the two cams are connected to the first and second cams respectively, and the two cams are connected to the second and second cams respectively, and the two cams are connected to the second and second cams respectively, and the cams are connected to the second and second cams respectively.

4. The anti-disturbance triaxial test specimen installation device according to claim 1, characterized in that: The outer side surfaces of the first upper arc portion, the first middle arc portion and the first lower arc portion are all arc-shaped surfaces, and the outer side surfaces of the first upper arc portion, the first middle arc portion and the first lower arc portion are smoothly connected to the outer side surface of the first rotating column.

5. The anti-disturbance triaxial test specimen installation device according to claim 1, characterized in that: The outer side surfaces of the second upper arc portion, the second middle arc portion and the second lower arc portion are all arc-shaped surfaces, and the outer side surfaces of the second upper arc portion, the second middle arc portion and the second lower arc portion are smoothly connected to the outer side surface of the second rotating column.

6. The anti-disturbance triaxial test specimen installation device according to claim 4, characterized in that: The outer side surface and the inner side surface of the first rotating column are both arc-shaped surfaces, and the wall thickness of each part of the first rotating column is equal. The radius of the outer side surface of the first rotating column is equal to the radius of the outer side surface of the first upper arc-shaped portion.

7. The anti-disturbance triaxial test specimen installation device according to claim 5, characterized in that: The outer side surface and the inner side surface of the second rotating column are both arc-shaped surfaces, and the wall thickness of each part of the second rotating column is equal. The radius of the outer side surface of the second rotating column is equal to that of the outer side surface of the second upper arc-shaped portion.

8. The anti-disturbance triaxial test specimen installation device according to claim 6, characterized in that: The outer side surface and the inner side surface of the first fixed column are both arc-shaped surfaces, the wall thickness of each part of the first fixed column is equal, and the radius of the outer side surface of the first fixed column is equal to that of the outer side surface of the first rotating column.

9. The anti-disturbance triaxial test specimen installation device according to claim 7, characterized in that: The outer side surface and the inner side surface of the second fixed column are both arc-shaped surfaces, the wall thickness of each part of the second fixed column is equal, and the radius of the outer side surface of the second fixed column is equal to that of the outer side surface of the second rotating column.

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