摘要
On the basis of the two geological factors rock structure and ground stress environment,a visco elastic plastic model is established to analyze the rock stability of dam foundation and dam abutment during excavation by a kind of FE condensed method.Rock mechanics is applied in analysing the dynamic process of displacements,stresses,yielding destruction of construction base level,soft interface of dam foundation.Results of the FE analysis indicate that theories and methods in this paper are reasonable and reliable.
为探讨坝基开挖对建基面和坝肩稳定的影响 ,建立粘弹塑性模型 ,用有限元凝聚法对坝基开挖稳定问题进行分析计算 ,研究了建基面及软弱结构面与时间因素有关的位移、应力、屈服破坏的动态过程 .结果表明 ,采用的理论和计算方法合理 ,计算程序具有精度高 ,收敛速度快等特点 。
