上海交通大学学报

上海交通大学学报（自然版） ›› 2013, Vol. 47 ›› Issue (10): 1611-1615.

• 交通运输 • 上一篇    下一篇

有限元/离散元耦合分析方法及其工程应用

俞韶秋1,汤华2
  

  1. (1.云南云岭高速公路养护绿化工程有限公司，  昆明  650032；2.中国科学院 武汉岩土力学研究所，岩土力学与工程国家重点实验室，  武汉 430071)
     
     
  • 收稿日期:2012-10-14 出版日期:2013-10-30 发布日期:2013-10-30

Coupling Analysis of FEM/DEM for Whole Failure Process of Rock Slope and Its Engineering Application

YU Shaoqiu1,TANG Hua2
  

  1. (1.Yunnan Yunling Highway Maintenance Greening Engineering Co., Ltd., Kunming 650034, China;2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China)
  • Received:2012-10-14 Online:2013-10-30 Published:2013-10-30

摘要：

基于有限元/离散元（FEM/DEM）耦合分析方法，引入单一裂纹和弥散裂纹的综合模型作为节理单元的应力应变关系及破坏准则，通过节理单元的起裂、扩展和失效来实现岩体裂纹的萌生和扩展的模拟.以巴西劈裂试验对该模型进行了验证.并以罗富高速公路典型边坡为工程背景，分析了其在暴雨和地震作用下的滑坡发生机理.计算表明，暴雨作用下该边坡易发生局部破坏，暴雨和地震综合作用下会发生整体滑动.
 

 
 

关键词: 有限元/离散元, 破裂模型, 连续非连续, 边坡

Abstract:

It is difficult to simulate the whole process of rock slope deformation and failure, however, it is very necessary to do so in practical engineering. With the help of the FEM/DEM, the integrated single and smeared crack mode was adopted to analyze the initiation and propagation of the rock mass. Then, this model was checked by Brazilian disk splitting tests. Finally, a typical slope of Luo-Fu Highway was analyzed using the procedure. In case of storm and earthquake, partial slide or overall slide happens. In case of storm, partial slide happens; however, in case of both storm and earthquake, overall slide happens.

Key words: finite element method/discrete element method(FEM/DEM), crack model, continuous to discontinuous, slope failure

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