V形材を用いた弾塑性ダンパの研究 : 第1報, 免震装置に用いた場合の地震応答解析

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This paper describes the static and dynamic characteristics of a new type of elastoplastic damper and seismic responses of a base isolated building using the elastoplastic dampers. The damper uses two pairs of V-shaped plates and its force-displacement curve is nonlinear with a hardening characteristic in the plastic range. The static force-displacement curve is obtained theoretically, and the dynamically equivalent model which takes into account elasticity, viscosity, plasticity, strain-rate sensitivity and geometry change of the damper is proposed. A seismic isolator consisting of rubber bearings and the elastopladtic dampers is also proposed, and the seismic responses of a 7-story building isolated by this isolator are calculated using a continuous system simulation language (CSSL).
1991-10-25