Strain Energy Method In Integral Security Of Hydro-structures

Integral safety of hydro-structures are studied in this paper with strain energy method.First, the existing evaluation methods are summarized; some shorts in them are pointed out. The purpose and sense of strain method which will be used in this paper are expounded to the point.Then, the definition of strain method is given. Changes of strain energy during the failure course of main structures such as gravity dams, arc dams, tunnels and slopes are studied, and compared with classical safety, to show the rationality and the relativity superiority in security evaluation.Further more, Changes of strain energy during the failure course of structures are analyzed with mutation theory, to eliminate the artificial factors. The benefits and some problems should be noticed are pointed out.To evaluate the degree of security of structures, reflect the failure course is from disorder to order, the reflection of strain energy density is considered, the entropy is used in analysis.