Axial strain test device used during nonstandard test piece loading

Abstract

The invention discloses an axial strain test device used during nonstandard test piece loading. The axial strain test device comprises an extensometer sensing slope surface, a hollow steel pipe, a solid steel rod, a base and an extensometer, wherein the extensometer is connected onto the solid steel rod in a sleeving way; a round thin steel plate is welded at one end of the hollow steel pipe; the other end of the hollow steel pipe is connected with a connecting part of the extensometer sensing slope surface; one end of the solid steel rod penetrates through the extensometer sensing slope surface and is arranged inside the extensometer sensing slope surface in a sleeving way; the other end of the solid steel rod is connected with the base; the extensometer is provided with a limiting screw bolt, so that the position and the height of the extensometer in the solid steel rod can be freely regulated. During loading, the axial strain test device and a nonstandard test piece synchronously generate deformation, so that the axial strain data of the nonstandard test piece is obtained; the limitation by the appearance of the loaded test piece is avoided; the axial strain test device can be used for test molds in any shape; the application range is wide.

Description

Technical field [0001] The invention relates to the technical field of rock mechanics experimental testing, and relates to an axial strain test device loaded by an indoor model test piece, in particular an axial strain test device used for loading a non-standard test piece. Background technique [0002] Deep mining, hydraulic resource development, tunnel development, construction of nuclear waste underground repository and underground petroleum storage, and even large-scale open blasting design are all carried out in rock mass media. The scale and cost of such projects directly depend on The mechanical properties of rock mass, as the most basic deformation characteristic evaluation index in the mechanical properties of rock mass-strain, is a must-tested experimental item when evaluating every rock mass project. The rock mechanics testing machine is inseparable from the rock mechanics testing machine. The rock mechanics testing machine includes the loading system and the data acqu...

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