多层结构模型在节理岩体力学分析中的应用  

Application of Multi-laminate Framework Model in Mechanics Behaviors of Jointed Rock Masses

作　　者：孙统立[1] 方孝伍[2] 张庆贺[1] 

机构地区：[1]同济大学地下建筑与工程系,上海市200092 [2]福建省电力勘测设计院,福州市350003

出　　处：《勘察科学技术》2006年第2期8-10,55,共4页Site Investigation Science and Technology

摘　　要：运用多层结构模型来分析节理岩体的力学特征,在简要介绍多层结构模型弹粘塑性理论的基础上,制定了反映多层结构模型特点的非线性算法,编制了相应的有限元程序。程序中考虑了节理岩体一般均沿节理面受拉开裂或剪切滑移的定向破坏特点,能够反映节理岩体各向异性以及主应力旋转所导致的塑性变形。最后,给出了相应的算例,并运用该模型分析了含有两组节理的岩质边坡的变形及破坏特征。The mechanics behaviors of jointed rock masses are analyzed with multi-laminate framework model.Based on introducing elasto-viscoplasticity formulas of multi-laminate framework model, the particular nonlinear algorithm is developed and corresponding procedure is compiled. In the procedure the regular destruction features are taken into account, which is tensional crack or shear sliding extending joint interface. The anisotropy of jointed rock masses and plastic deformation induced by rotation of principle stress axes are reflected. Finally relevant examples are presented and the deformation and destroy characters of rocky slope with two sets joints are analyzed with multi-laminate framework model.

关 键 词：多层结构模型 节理岩体 弹粘塑性 岩质边坡 

分 类 号：TU452[建筑科学—岩土工程] TP393.02[建筑科学—土工工程]