摘要
层状岩体具有明显的各向异性,其抗剪强度应是相对于层面方向的函数。作者曾提出层状岩体c,j 值的经验表达式,并与前人的试验结果进行对比,二者吻合较好。在此基础上,引入横观各向同性体的本构关系和其中的c,j 值是随方向变化的Mohr-Coulomb准则,编制了相应的三维弹塑性有限元程序,并以一个地下洞室为背景,分别就岩体为横观各向同性和各向同性的情况进行模拟计算与对比,得出了有益的认识。
The layered rockmass is of obvious anisotropic mechanical behavior,and its shear strength should be a function of inclination with respect to the layered planes. An empirical expression of c,j waw suggested by the authors before for layered rockmass,and in good agreement with the test results. On the basis of this analysis,the constitutive equation of transversely isotropic medium and Mohr-Coulomb criteria in which c,j vary with directions are employed,and a relative 3-D elasto-plastic FEM code is developed...
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第11期1615-1619,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(59879027)。
