鉛プラグ型積層ゴムを適用した免震建物の風応答簡易予測手法

概要

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It is becoming increasingly important to carry out wind resistance design for base-isolatedtall buildings. Otherwise, the wind-induced response of base-isolated building, usinglead-plugged rubber bearings (LRB), predicted by the hysteresis model of an isolator forseismic response analysis has a large error, because the creep and re-crystallizations ofLRB's lead portion caused by dynamic motion having static component.Therefore, a convenient method is proposed for estimating base-isolated-tall-buildingresponses to strong winds, which comprise slowly- and quickly- varying components. Thismethod proposed with considering of the experimental results for a LRB subjected to fourtypes of ideal wind loads, show that the LRB brings one-side horizontal deformation withfluctuation, accompanied with creep and re-crystallizations of LRB's lead portion.And the last, comparing the dynamic tests results and the predicted results by theproposed method, the property of the proposed method is verified.
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