応答の差分に基づく減衰効果係数及び偏りを伴う等価線形系による1質点弾塑性系の応答予測

概要

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Damping and inelastic deformation are effective in reducing the resonance response of building structures. However, their effects may be very limited for specific vibration periods at specific ground motions. Moreover, damping effects may be greatly different for acceleration and displacement responses as in inelastic system. This research firstly discusses the prediction accuracy of damping effective factors, a major design index in Japanese building design. Then propose a new factor based on the real damping effects reflected as the variation in response spectra. This new damping effective factor is used for predicting the inelastic response. For this purpose, a large part of works is focused on constructing a new equivalent linearization model based on a drifted hysteric loop, including comparison with other popular methods.
2006-07-30