Triaxial test machine and testing system

A triaxial test and specimen technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc. question

Pending Publication Date: 2018-04-20
SICHUAN DEXIANG KECHUANG INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When using a triaxial testing machine to perform a triaxial test or a true triaxial test or a rockburst test on a specimen, whether the specimen is centered with the loads in each direction has a great influence on the test results, so when using the triaxial When the testing machine tests the test piece, it is necessary to align the test piece with the loads in all directions as much as possible; however, in the triaxial testing machine in the prior art, the installation process of

Method used

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  • Triaxial test machine and testing system

Examples

Experimental program
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Embodiment 1

[0071] see figure 1 , figure 2 , image 3 , a triaxial testing machine is provided in this embodiment, including a loading frame 100, a test piece box 101, a base 102, six actuators 103, a lifting cylinder 104, and a locking cylinder 105; wherein,

[0072] The base 102 includes an axial frame base 102-1, a horizontal frame base 102-2, and a specimen box base 102-3. The axial frame base 102-1, the horizontal frame base 102-2, and the specimen box base 102 -3 are set on three separate sets of foundations. Since the test piece box 101 and the frames in all directions will be slightly deformed during the test, in order to avoid mutual influence, the axial frame base 102-1, the horizontal frame base 102-2 and the test piece box base 102-3 are respectively It is set on three sets of independent foundations; in this embodiment, the foundations corresponding to the axial frame base 102-1 and the horizontal frame base 102-2 respectively adopt anti-seismic foundation structures, and...

Embodiment 2

[0086] Such as Figure 11 or as Figure 12 As shown, the main difference between this embodiment 2 and the above-mentioned embodiment 1 is that in this embodiment, the test piece box 101 is a true triaxial test piece box 112, and the true triaxial test piece box 112 includes a custom Cardiac head 112-1, finale shaft 112-2, pressing block 112-3, box body 112-4, box body support 112-5, test piece deformation sensor 119, wherein,

[0087] The box body 112-4 is surrounded by a cuboid or cube structure by the upper cover, the lower cover and the side walls; each surface of the box body 112-4 is provided with a self-centering indenter 112-1, The self-centering indenter 112-1 is connected to one end of the final shaft 112-2, and the other end of the final shaft 112-2 passes through the box body 112-4, extends into the box body 112-4, and is connected to the On the pressing block 112 - 3 , the pressing block 112 - 3 is used to press against one surface of the test piece 106 . In th...

Embodiment 3

[0092] Such as Figure 14 or as Figure 15 As shown, the main difference between this embodiment 3 and the above-mentioned embodiment 1 is that in this embodiment, the test piece box 101 is a rockburst test piece box 113, and the rockburst test piece box 113 includes a self-centering pressure Head 112-1, finale shaft 112-2, pressing block 112-3, movable pressing block 113-3, box body 112-4, box body bracket 112-5, wherein,

[0093]The box body 112-4 has a cuboid or cube structure. One side of the box body 112-4 is not closed or is provided with an opening, which is convenient for observing rockburst phenomena. In the side surface, the corresponding actuator 103 The movable pressing block 113-3 is aligned with the test piece 106, and the load is transmitted to the test piece 106. The movable pressing block 113-3 is provided with a spherical groove 114 for compensating the force of the actuator 103. The non-perpendicularity error between the loading direction and the surface o...

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Abstract

The invention relates to a three-axis testing machine and a testing system, including a loading frame, a test piece box, a base, six actuators, a lifting cylinder, and a locking cylinder, wherein the axes of the six actuators intersect at one point O; the actuator is used to provide the test piece in the test piece box with six loads perpendicular to the six surfaces of the test piece, so that there are independent loading/unloading capabilities in three directions perpendicular to the surface of the test piece; the test piece The box is used to install and position the test piece, so that the geometric center 0'' of the test piece coincides with the geometric center 0' of the test piece box, and the geometric center O' of the test piece box coincides with the point O, and at the same time the Any plane is perpendicular to the axis of any actuator. The triaxial testing machine and test system can conveniently and quickly complete the centering process of the specimen, not only can load the specimen in three directions and six sides to complete the true triaxial test, but also , It can also realize one-way sudden unloading and complete the rockburst test.

Description

technical field [0001] The invention relates to the technical field of testing rock mechanical properties, in particular to a triaxial testing machine and a testing system. Background technique [0002] In recent years, the scale of national infrastructure construction has become larger and larger, and the geological problems encountered in the process of infrastructure construction have become more and more complex, and the geotechnical problems involved have become more and more diversified, which forces us to further improve and development of testing techniques for geotechnical engineering. Through scientific tests to identify various performance indicators of rocks, to achieve reasonable selection, use and excavation of rocks, and to gain a deeper understanding of the mechanical characteristics of rock media in complex environments, so as to ensure the safety, economy and rationality of construction projects. [0003] With the continuous development of testing technolo...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/12
CPCG01N3/08G01N3/12
Inventor 吴冲张建勋阙永德谢卿
Owner SICHUAN DEXIANG KECHUANG INSTR
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