Simulation of non-equilibrium evolution for rock mass base on creep-damage model

摘要：

　　The rock mass disturbed by the excavation or other load will evolve from non-equilibrium state to equilibrium state with time-dependent deformation and damage.The simulation of nonequilibrium evolution is very important for evaluating the long-term stability analysis for arch dam, slope or underground engineering.This paper presents the effective driving stress based on Duvaut-Lions viscoplastic model, in which overstress exceeding yield surface is taken as the effective driving forces of non-equilibrium evolution process.The expression for finite element method has been finished based on a specific creep and damage model.It is implemented in TFINE, which is a Three-dimensional FINite Element method program, and then used in the simulation of the non-equilibrium evolution for rock mass.The distribution of driving forces and the law of evolution have been analyzed.

作者: Y.R.Liu Z.He L.Zhang J.Q.Deng Q.Yang

作者单位: State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing, China

会议类型: 国际会议

会议名称: The 3rd ISRM Young Scholars Symposium on Rock Mechanics(第三届国际岩石力学青年学者论坛)

会议地点: 北京

会议语种:英文

页码: 339-343

在线出版日期: 2014-11-08（万方平台首次上网日期，不代表论文的发表时间）