DYNAMIC ANALYSIS OF CONCRETE GRAVITY DAMS BYDECOUPLED MODAL APPROACH IN TIME DOMAIN

摘要

In this paper, a new approach is proposed for dynamic analysis of general concrete gravity dam-reservoirsystems based on the decoupled modal technique in time domain. The method is described initially, andthe analysis of Pine Flat Dam is considered as a verification example. The proposed approach is proved tobe a very effective technique. The main advantage being that it relies on eigen-vectors of decoupledsystem, which can be easily obtained by standard eigen-solution routines.