鉄筋コンクリート建築物の大変形領域における非対称履歴ループと地震応答性状

概要

論文の詳細を見る
When earthquake response of reinforced concrete building extends to the domain of large deformation, the skeleton curve may show a falling gradient. In such a case, the center of displacement wave often shifts from origin, and also the hysteresis loop may show a non-symmetric shape. If the center of displacement wave keeps on shifting, it means that the response continues to grow up, which may induce the structure to ultimately collapse. The purpos of this paper is to examine the influence of restoring force characteristics and properties of ground motion on the response behaviour whose hysteresis loop shows a non-symmetric shape. A simple vibrational system model is assumed to obtain the general tendency of dynamic response behaviour in the domain of large deformation. As the result of this study, some useful conclusions were obtained. One of them is that if the bearing strength capacity of the structure is 2〜3 times as much as the amplitude of ground motion, the new growth of the response which lies in the domain of largedeformation can be avoided.
1979-12-01