26 繰り返しによる劣化を考慮した構造物の必要履歴エネルギー吸収量の解析的考察

概要

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In this study, the collapse capacity of single-degree-of-freedom system exhibiting strength and stiffness deterioration under seismic excitation was evaluated using two hysteretic models. A parametric study was carried out to determine the factors affecting the collapse capacity of deteriorating system. In the second part of the study, analytical calibration of a parameter characterizing the effect of cyclic deterioration on the seismic response based on the concept of equivalent damage was carried out making use of Park and Ang damage index. The effect of different system parameters on the hysteretic energy dissipation demand was also investigated. The results obtained can provide a characterization of cyclic deterioration effect in case strength and stiffness deterioration are not explicitly considered in the modeling of hysteretic behavior.
一般社団法人日本建築学会の論文
2005-03-20