文献类型：期刊文献

英文题名：Research on the size effect of roughness on rock uniaxial compressive strength and characteristic strength

作者：Hu, Gaojian[1,2,3];Li, Yu[1,2,3];Ma, Gang[1,2,3]

机构：[1]Shaoxing Univ, Dept Civil Engn, Shaoxing 312000, Zhejiang, Peoples R China;[2]Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Zhejiang, Peoples R China;[3]Zhejiang Rock Mech & Geol Hazard Lab, Shaoxing 312000, Zhejiang, Peoples R China

年份：2021

卷号：28

期号：1

起止页码：613

外文期刊名：SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000718897700001)、、EI(收录号：20214811241561)、Scopus(收录号：2-s2.0-85119967321)、WOS

基金：The authors appreciate the support of the Zhejiang Collaborative Innovation Center for Prevention and Control of Mountain Geological Hazards (PCMGH-2017-Y-05) and Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (ZGRMG-2019-07) .

语种：英文

外文关键词：roughness; uniaxial compressive strength; size effect; mathematical model

外文摘要：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.