SIMULATION OF NONLINEAR DYNAMIC RESPONSE OFREINFORCED CONCRETE SCALED MODELUSING THREE-DIMENSIONAL FINITE ELEMENT METHOD

摘要

A constitutive model of reinforced concrete for cyclic or dynamic loading analysis is developed based onrnexisting experimental results. The proposed model features hysteretic characteristics of concrete inrntension, compression, shear along crack direction, and the bond between concrete and reinforcing bars. Arnnon-orthogonal multi-directional smeared crack model is also developed for both biaxial and tri-axialrnstress states for realistic representation of concrete cracking under stress reversals. The applicability andrnefficiency of the proposed models are demonstrated through simulation analyses with various types ofrnreinforced concrete specimens subjected to cyclic loads or seismic excitation on a shaking table.