【摘要】 本文通过对裂隙岩体内的应力、应变的体积平均,提出了适合于多裂隙岩体特性的等效连续模型。综合运用损伤力学和断裂力学理论,定义了岩体损伤张量、有效应力张量、损伤应变等;建立了损伤演化方程和多裂隙岩体的本构关系。利用所建立的模型,对一座水电站地下厂房的分步开挖进行了数值模拟。更多还原

【Abstract】 An equivalent continuum model of jointed rock mass is proposed by averaging the stress and strain in a volume element . Using the theory of damage machanics and fracture mechanics, the damage tensor, effective stress tensor and damage strain etc. of the rock mass are defined, propagation equations of damage and a constitutive model of jointed rock mass are established. The above model is used for the numerical analysis of an engineering case.更多还原