考虑节理岩体强度各向异性的非线性
Study on non-linear finite element considering anisotropy jointed rock mass strength
文章以各向同性Mohr-Coulomb剪切屈服准则为基础，将利用结构面网络模拟计算所得到的岩体连通率和岩体强度参数引入其中，并考虑受拉屈服的Rankine准则，研究了多维强度屈服准则的一般理论方法。在此基础上，利用FORTRAN语言编制了相应的计算程序，并引入ABAQUS中。理论分析和数值分析表明，各向异性材料的屈服面不一定与最大剪应力面重合；将Rankine准则和Mohr-Coulomb模型综合起来考虑可改进Mohr-Coulomb准则对材料抗拉强度过高估计的缺点，更符合工程实际。实验结果证明了方法的有效性。
he theory and methods of multidimentional strength yield criterion is studied by using persistence ratio and strength of rock mass obtained by network simulation and considering Rankine criteria on the base of isotropic Mohr-Coulomb yield criterion. In order to introduce the multidimentional strength yield criterion into ABAQUS,the codes are developed by using the FORTRAN language.Theoretical anslysis and numerical anslysis indicate that the maximum shear stress plane can not be the same of yield plane in orthotropic matericals.It can improve the shortcomings of overestimating the material tensile strength by combining Rankine and Mohr-Coulomb criteria.
陈健云、涂运伟
矿业工程理论与方法论地质学
网络模拟多维强度屈服准则Mohr-Coulomb准则Rankine准则数值分析
network simulationmultidimentional strength yield criterionMohr-Coulomb criterionRankine criterionnumerical anslysis
陈健云,涂运伟.考虑节理岩体强度各向异性的非线性[EB/OL].(2010-04-15)[2025-07-21].http://www.paper.edu.cn/releasepaper/content/201004-514.点此复制
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