Effects of 3D deformation and nonlinear stress–strain relationship on the Brazilian test for a transversely isotropic rock  

作　　者：Juhyi Yim Yoonsung Lee Seungki Hong Ki-Bok Min 

机构地区：[1]R&D Center,Hyundai Engineering and Construction,75,Yulgok-ro,Jongno-gu,Seoul,Republic of Korea [2]Department of Energy Systems Engineering and Research Institute of Energy and Resources,Seoul National University,1,Gwanak-ro,Gwanak-gu,Seoul,08826,Republic of Korea

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2023年第12期3221-3229,共9页岩石力学与岩土工程学报（英文版）

基　　金：supported by Basic Science Research Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Education(Grant No.2023R1 A2C1004298);a grant from the Human Resources Development program(Grant No.20204010600250)of the Korea Institute of Energy Technology Evaluation and Planning(KETEP),funded by the Ministry of Trade,Industry,and Energy of the Korean Government.

摘　　要：To improve the accuracy of indirect tensile strength for a transversely isotropic rock in the Brazilian test, this study considered the three-dimensional (3D) deformation and the nonlinear stress–strain relationship. A parametric study of a numerical Brazilian test was performed for a general range of elastic constants, revealing that the 3D modeling evaluated the indirect tensile strength up to 40% higher than the plane stress modeling. For the actual Asan gneiss, the 3D model evaluated the indirect tensile strength up to 10% higher and slightly enhanced the accuracy of deformation estimation compared with the plane stress model. The nonlinearity in stress–strain curve of Asan gneiss under uniaxial compression was then considered, such that the evaluated indirect tensile strength was affected by up to 10% and its anisotropy agreed well with the physical intuition. The estimation of deformation was significantly enhanced. The further validation on the nonlinear model is expected as future research.

关 键 词：ANISOTROPY Transversely isotropy Brazilian test Indirect tensile strength NONLINEARITY 3D modeling 

分 类 号：TU45[建筑科学—岩土工程]