Dynamic Stability Discrimination Method for Concrete Dam under Complex Geological Conditions

摘要: The instability of dams will bring immeasurable personal and property losses to the downstream, so it has always been a trendy topic worthy investigation. Currently, rigid body limit equilibrium method is most commonly used for dynamic stability analysis dams. However, under action earthquakes, integral dam-foundation system threatens safety great concern. In this paper, that can reflect complex geological structural forms dam foundations proposed in paper. advantages are deals with difficulty assuming sliding surfaces lack quantitative criteria foundations. addition, through method, channels may appear be automatically searched random earthquake action, factors quantitatively obtained. Taking high RCC gravity construction China as an example, applied three-dimensional finite element model dam, then calculation carried out. Through formation process foundation’s plastic zone failure different strength reduction coefficients studied on analyzed detailedly, acquisition realized. results show reasonable feasible, helps provide new idea