含节理岩块单轴受压试验三维离散元数值模拟  

3D-DEM numerical simulation for jointed rock under uniaxial press loading

作　　者：李世海[1] 董大鹏[1] 燕琳[1] 

机构地区：[1]中国科学院力学研究所,北京100080

出　　处：《岩土力学》2003年第4期648-652,共5页Rock and Soil Mechanics

基　　金：中国科学院重要研究方向"滑坡灾害防治中的关键力学问题"项目资助;"灾害环境下重大工程安全性的基础研究"(2002CB412703)课题资助。

摘　　要：采用三维离散元方法,模拟含节理岩块的单轴受压试验。并针对节理空间分布,给出了解析解与数值计算比较的结果,验证了数值模拟的正确性。当节理正交时,离散元与有限元的计算结果一致。计算结果定量地说明了岩体的各向异性和尺寸效应。Discrete element method (DEM) based numerical simulation is conducted for the jointed rock under uniaxial press loading. The simulation results have a good agreement with the theoretical results obtained by analyzing the space parameters of joints, which proved the correctness of DEM numerical simulation. The results of DEM agree well with the one of FEM when joints are crosscut each other. The computation results showed quantitatively the anisotropy and size effect of jointed rock.

关 键 词：弹性模量 三维离散元 节理参数 节理岩体 单轴受压试验 数值模拟 

分 类 号：TU459.1[建筑科学—岩土工程]