29 積層ゴムの鉛直剛性低下を考慮した高層免震構造物のロッキング振動

概要

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Applying the base isolation system to a high-rise structure, it is very important to grasp the ultimate response of laminated rubber bearings. The objective of this paper is to evaluate the characteristics of rocking vibration on the high-rise base isolated structure with laminated rubber bearings experiencing compressive stiffness degradation and tensile force. In order to obtain the relationship between rotational angle and resisting moment of laminated rubber bearings, nonlinear static incremental analysis is carried out by using compressive and tensile stiffness. Based on the results of static analysis, rocking vibration subjected to horizontal seismic motion is calculated. It is found that the rocking vibration caused by tensile force of laminated rubber bearings has hardly influence on the horizontal response of base isolation story and superstructure.
一般社団法人日本建築学会の論文
1998-03-20