【摘要】 应用突变理论,根据混凝土重力坝的特点,建立了一个考虑裂隙介质应变软化和水致弱化的尖点突变模型,并对混凝土重力坝沿建基面滑动的机理进行了分析,指出发生突变的必要条件取决于系统的内部特性,外部因素的影响起触发作用.也根据突变模型给出了系统突变时的临界位移值和临界外力.更多还原

【Abstract】 According to characters of concrete gravity dam,a cusp catastrophe model of concrete gravity dam sliding along the contact surface between dam and foundation is established considering strain softening and water-permeating softening characters of the crack.Sliding mechanism of concrete gravity dam is analyzed.The authors point out that inner properties of the system is the main factor of instability of sliding while the action of outside environment will trigger the catastrophe.By analyzing the model,the critical displacement and force of the system corresponding to the catastrophe are presented.更多还原