鋼製橋脚の曲線近似復元力履歴モデルおよび実験検証

Abstract

In this paper, a hysteretic restoring force model is proposed to predict the inelastic response of steel piers under strong ground motions. Instead of mu ltiple lines used by former researchers, a series of curves are adopted to approximate the complicated force-displacement hysteretic relationship of stleel piers. In this model, hysteretic rules are proposed using seven parameters, which can be obtained by static cyclic loading tests，to understand the hysteretic character of column after deterioration. To verify the accuracy of the proposed model，six static cyclic tests and eleven hybrid tests using three kinds of stleel piers are conducted. By comparing results due to the simulation and the tests，the validity of the proposed method is clarified accurately in the seismic response simulation.