Poly-linear型履歴ダンパーを用いた多層構造物の最適地震応答制御について : Poly-linear型履歴ダンパーの最適剛性分布の評価

概要

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This paper presents an analytical approach to the optimum parameters of poly-linear type hysteretic damper useful for near-field ground motions on the basis of random earthquake response analysis. The optimum parameters discussed here are the stiffness ratios of the damper to the bare frame and the stiffness distribution indices of the damper. Numerical calculations are carried out for five- or six-degree-of-freedom structural systems with the damper. From two viewpoints of preservation of seismic safety and improvement of structural comfort, the optimum parameters of the PL damper are determined in such a way that the structural systems suffer no damage under medium earthquake excitations while the systems suffer only minor recoverable damage under severe earthquake excitations. The applicability of the optimum parameters of the damper based on the random earthquake response analysis is demonstrated through the simulation analysis using the recorded earthquake accelerograms.
2000-04-30