Dynamic simple shear apparatus of servo cylinder-driven cubic articulated mechanism

Abstract

The invention discloses a dynamic simple shear apparatus of a servo cylinder-driven cubic articulated mechanism. The dynamic simple shear apparatus comprises a main machine part, a loading mechanism, and a measurement signal collecting and processing mechanism, wherein the main machine part is a core for applying a load to a sample; the loading mechanism comprises a vertical loading mechanism and a horizontal loading mechanism; the measurement signal collecting and processing mechanism is used for automatically controlling deformation, load signal input and sensor signal output. The device disclosed by the invention improves the structure of the existing dynamic simple shear apparatuses, and is simple and convenient to use and operate; a plurality of actual loading conditions of the scene can be simply and accurately simulated under the condition of pure shear deformation, so that the dynamic simple shear apparatus is suitable for researching a plurality of dynamics problems of rock-soil, such as geological process, and can directly research the relations between dynamic shear stress and dynamic shear strain under drainage and non-drainage conditions. In addition, the power cycle function also can be used for researching the damping ratio and the liquefaction characteristics.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering testing equipment, and relates to a cubic hinge mechanism dynamic single shear instrument driven by a servo oil cylinder. Background technique [0002] Existing test instruments and equipment for measuring soil shear deformation strength characteristics include direct shear instrument, simple shear instrument, triaxial instrument, torsional shear instrument, plane strain instrument and true triaxial instrument. In addition, dynamic shear instrument also includes dynamic single shear instrument. , Dynamic triaxial instrument and dynamic torsional shear instrument. The existing dynamic simple shear instrument mainly adopts cylindrical sample and cubic sample. [0003] The simple shear instrument for cylindrical samples uses the method of combining multi-layered rings to apply confining pressure, and the soil sample is restrained by multi-layered rings to ensure that the cross-secti...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a dynamic single shear instrument with a cubic hinge mechanism driven by a servo cylinder, which solves the problem in the prior art that when the sample deforms and relative motion occurs between the sample and the rigid plate, the rigid plate and the test The contact surface of the sample will generate friction, which will affect the test results of the dynamic single shear test

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