免震用積層ゴムの振動特性に関する研究 : 履歴復元力特性のモデル化と非線形振動特性

概要

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In this paper, we propose new analytical models for the hysteresis restoring force characteristics of a rubber bearing, and could determine the nonlinear vibration properties of a rubber bearing (damping coefficient and spring constant) using the models. The analytical models are two restoring force models of power function type, which are softening and hardening type. The models were determined using the skeleton curve and the area of the hysteresis loop, which were obtained by experimental results of dynamic hysteresis characteristics tests of rubber bearings. The nonlinear damping coefficient and spring constant depending on amplitude of horizontal displacement, frequency and surface pressure were calculated by the method based on an equivalent linear system applied to the model. As a result of analyzing the vibration properties of practical rubber bearing for a bridge using this method, the utility of this method was verified. We could also describe the possibility of analyzing dynamic vibration response reflected in the nonlinear vibration properties.
社団法人日本建築学会の論文
1995-09-30