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

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...

AI Technical Summary

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 rigidity. test

So far, no matter at home or abroad, there is no testing machine that can adapt to soil, rock and concrete materials at the same time, and there is no testing machine that independently applies bidirectional dynamic loads, and there are no examples of large-scale testing machines that further consider the coupling of seepage and stress.

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