OpenSees를 이용한 철근콘크리트 전단벽의 비선형이력해석

Abstract

Reinforced concrete shear wall is analyzed by using Multiple-Vertical-Line-Element (MVLE) which is available in the nonlinear analysis program OpenSees (Open System for Earthquake Engineering Simulation). In this study, a nonlinear hysteretic analysis is mainly conducted to provide a numerical analysis procedure and a verification for the experiment results of eleven shear wall specimens which was coordinated by Land & Housing Institute. Experiment results are revisited and examined with five categorizations and the examined results are described in this manuscript. Chang and Mander’s model is adopted to represent the behaviour of both unconfined and confined concrete of the target shear walls. Menegotto and Pinto’s model with Filippou’s isotropic hardening is adopted to represent the behaviour of steel bars. From numerical results, the nonlinear hysteretic behavior of the shear walls is well predicted with use of the steel and concrete strengths produced by structural material test. However, it is found to be that some modification of the stiffness in the unloading path may be required to produce more realistic hysteretic path closed to the one obtained by experiment. Finally, we provide the present numerical result for the future benchmark test of nonlinear analysis of shear wall structure.