構造物の復元力特性の形状が動的応答に及ぼす影響について (その2)

Abstract

It is well-known that the restoring force characteristics of reinforced concrete structureshave a tendency to deteriorate on the stiffness and strength under repeated loading. In thispaper, the influence of the shapes of the hysteresis loop on the dynamic responses of the structureare discussed.Two types of fundamental hysteresis models and four parameters representing a combi-nation between degrading model and slip model and the effects of the stiffness degradation underunloading are considered here. The results of earthquake responses of the structure having abovehysteresis show the importance of modeling of the hysteresis loop on the aseismic safety of thestructures.