ANAYTICAL STUDY OF DYANAMIC BEHACVIOR OF BREAKWATER CAISSON CONSIDERING INTERACTION BETWEEN STRUCTURE AND FLUID

Abstract

 When waves, tsunamis etc. that threaten the stability of port structures attacked, structure behavior prediction method for has not been established. In this study, we aim to evaluate applicability of the fluid simulation that breakwater caisson can move by applying the “fluid-rigid-body interaction analysis method” developed by Yoneyama et al. The results confirmed the following: (1) the fluid force acting on the breakwater caisson using this analysis method can reproduce the existing wave force calculation formula. (2) the breakwater caisson begin to move when Ratio of Strength against Action is 1 or more.

 This analysis method is considered to be a method that can reproduce actual phenomena well even under conditions where the stability of structures is compromised. Thus, it is considered to be one of the useful methods for examining of damage mechanism or disaster mitigation effects.