降伏後のモード形を考慮した鋼構造骨組の変位応答評価法

概要

論文の詳細を見る
Estimates of seismic structural demands such as inter-story drift angles that are less time-consuming than nonlinear dynamic analysis can be useful for structural performance assessment and for design. Luco and Cornell proposed a simple predictor extending the idea of modal superposition of the first two modes with the SRSS rule and taking a first-mode inelastic spectral displacement into account. Luco's predictor achieved quite an improvement from simply using the response of an elastic oscillator. However, the predictor cannot capture well the P-Δ effect. This paper discusses the possible improvement of Luco's predictor considering a post-elastic mode shape and without losing the simplicity. The accuracy of proposed predictor is investigated using numerical examples.
一般社団法人日本建築学会の論文
2004-03-20