Large-sized multifunction material three-shaft static-dynamic test machine

A multi-functional, testing machine technology, used in material inspection products, analytical materials, soil material testing, etc., can solve problems such as insufficient stiffness, testing, and testing machines without soil, rock and concrete materials, and achieve high component utilization and automation. high degree of effect

Inactive Publication Date: 2005-07-20
TSINGHUA UNIV +1
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Problems solved by technology

Although this kind of testing machine can consider the influence of the intermediate principal stress on the material, it cannot test the uniform external pressure and internal pore pressure of the specimen; and the conventional triaxial testing machine applied to soil and rock materials cannot perform concrete static dynamic tests due to insufficient

Method used

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  • Large-sized multifunction material three-shaft static-dynamic test machine
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  • Large-sized multifunction material three-shaft static-dynamic test machine

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Embodiment Construction

[0014] The multifunctional material three-axis static and dynamic testing machine provided by the present invention is realized by the following key technologies:

[0015] 1) In order to meet the needs of different material tests, a hydraulic system with parallel oil sources is adopted, which can be flexibly added at any time according to the amount of oil required for the test;

[0016] 2) In order to overcome the pressure instability of the triaxial pressure chamber caused by the axial load or the instability of the axial load caused by the confining pressure load, the pressure stabilizing equipment connected with the triaxial pressure chamber is adopted to achieve the internal pressure of the system. The water quality is constant to ensure the pressure stability of the pressure chamber;

[0017] 3) In order to realize the active control of the pore pressure of the sample, an independent electro-hydraulic servo control system is used to participate in the measurement and con...

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Abstract

The invention is a large-scale multifunctional material three-shaft static and dynamic tester, for providing a three-shaft static and dynamic tester for testing various materials, able to be adaptive to measure the mechanical performance of earth and stone and concrete materials, and also able to make separate seepage as well as seepage and stress coupling, and its characteristic: its main machine part includes side oil water exchange vat and serial water cylinder, side hydraulic cylinder driving the side oil water exchange cylinder,, seepage water cylinder, arranged at the bottom of the main machine and connected with the sample held in a three-shaft pressure room, and seepage hydraulic cylinder driving the seepage water cylinder, the serial water cylinder, is connected with the water path of the three-shaft pressure room through the side oil water exchange cylinder, the upper part of a piston rod driven by an axial vibration exciter is connected with the serial water cylinder and the lower part of the piston rod is connected with the sample held in the three-shaft pressure room. The tester of the invention has high rigidity, high measuring and control accuracy, multiple functions, and is extremely adaptive to material scientific research and engineering detection.

Description

technical field [0001] The invention relates to a large-scale multifunctional material three-axis static and dynamic test equipment, which belongs to the technical field of test devices, and is especially suitable for measuring the mechanical properties of soil, rock and concrete materials, and can also perform various material test functions such as separate seepage and coupling seepage and stress test etc. Background technique [0002] The safety of civil and water conservancy projects depends on the strength and deformation characteristics of engineering materials in a certain sense. At present, triaxial test equipment is often used to measure the stress-strain curve of materials through specific methods, and further obtain the strength index of materials. For soil and rock materials, at present, large-scale conventional triaxial testing machines are used in my country. The main problem is that a large stress ratio cannot be applied to simulate the actual earthquake sit...

Claims

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Application Information

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IPC IPC(8): G01N3/00G01N33/24G01N33/38
Inventor 刘天云张建民贾喜群李庆斌肖雪红张丙印张建卫金峰师录英王恩志
Owner TSINGHUA UNIV
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