Change Features on Crossfeed of Dam Foundation and Concrete Dam Body Based on Catastrophe Theory

摘要

Concrete dam body and darn foundation are under interactive impact, interaction and coupling of human being's activity, stress of rock body and penetration force of under-ground. The study on the interaction and coupling between human being's activity, stress of rock body and penetration field of groundwater is the crossfeed effect of the paper. Under a different loading group, the crossfeed surface between concrete dam body and dam founda-tion will experience a process being changed from elastic status into elastic plastic status, fi-nally into a full-plastic status possibly. The study on change of crossfeed of dam body and dam foundation is to find the catastrophe phenomenon occurred in the crossfeed process of dam body and dam foundation's system. Based on motive stability theory, the paper studies the change features of crossfeed between concrete dam body and foundation.