COMPUTATIONAL APPROACH TO PATH-DEPENDENT NONLINEAR RC/SOIL INTERACTION

Abstract

This paper presents reversed cyclic models of coupled RC/soil system. The full path-dependent constitutive models of RC, soil and their interfacial zones which are installed in the FEM program WCOMR-SJ are explained. Consequently, RC/soil hysteresis damping and energy absorption are coherently taken into account with corresponding states of damage and plasticity regarding concrete and reinforcement. This computational tool was systematically verified through coupled RC/soil system subjected to static reversed cyclic loads. The nonlinear interaction of RC/soil system and induced damage of underground RC are investigated.