Multi-scale limit load analysis for discontinuous rock mass based on the homogenization method
Multi-scale limit load analysis for discontinuous rock mass based on the homogenization method
复制标题
基于均质化方法的非连续岩体多尺度极限荷载分析
DOI：
10.1002/(sici)1096-9853(19990825)23:10
复制
发表时间：
1999
影响因子：
4
通讯作者：
T. Kawamoto
中科院分区：
文献类型：
--
作者：
T. Kyoya;K. Terada;T. Kawamoto
提出并检验了一种评估岩体结构强度的新方法。该方法基于弹弹塑性材料的塌陷载荷分析和均质化方法，可以对异质介质进行多尺度分析。均质化过程用具有宏观刚度的等效连续介质代替有裂纹的岩体，同时在局部化过程中估计岩体的破坏准则。结果表明，通过有限元分析数值计算得到了不连续岩体的平均刚度和宏观破坏准则。因此，岩体结构的破坏强度是通过采用宏观破坏准则的线性规划形式的崩塌荷载分析来评价的。这是将均质化方法应用于岩体强度分析的首次尝试。版权所有 © 1999 约翰·威利父子有限公司
A new method to evaluate the strength of rock mass structures is proposed and examined. The method is based on the collapse load analysis of elasto-perfectly plastic material along with the homogenization method, which enables the multi-scale analyses for heterogeneous media. The homogenization process replaces a rock mass with cracks by an equivalent continuum medium with macroscopic stiffness while the failure criterion for the rock mass is estimated in the localization process. It is shown that both the averaged stiffness and the macroscopic failure criterion of the discontinuous rock mass are numerically obtained via the finite element analyses. Thus, the failure strength of a rock mass structure is evaluated by the collapse load analysis in the form of Linear Programming with the macroscopic failure criterion. This is the first attempt to apply the homogenization method to the strength analysis of rock mass. Copyright © 1999 John Wiley & Sons, Ltd.