journal article·2021-11-09Open access

Research on the size effect of roughness on rock uniaxial compressive strength and characteristic strength

Gaojian Hu, Yu Li, Gang Ma

Abstract

Abstract The joint roughness has an influence on the uniaxial compressive strength (UCS) and characteristic strength of the rock, but the relationship of the influence is yet to be obtained. In this article, the influence of the size of the rock with rough joints on the UCS and the influence of the size effect of roughness on the UCS are studied by establishing 11 sets of numerical simulation schemes, a total of 30 working conditions. The stress–strain curve law of rocks with different roughness and sizes is analyzed, and the relationship between UCS and the size of rock with rough joints, joint roughness coefficient (JRC), is respectively proposed. Mathematical models of rock characteristic size of UCS, characteristic strength of the rock, and JRC are established, respectively.
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Research context

OpenAlex topics: Rock Mechanics and Modeling · Landslides and related hazards · High-Velocity Impact and Material Behavior

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Civil Engineering, Shaoxing University , Shaoxing , Zhejiang 312000 , China

Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province , Shaoxing , Zhejiang 312000 , China

Zhejiang Rock Mechanics and Geological Hazard Laboratory , Shaoxing , Zhejiang 312000 , China

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