Restoring capability of bilinear hysteretic seismic isolation systems
Restoring capability of bilinear hysteretic seismic isolation systems
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DOI：
10.1002/eqe.772
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发表时间：
2008-04
影响因子：
4.5
通讯作者：
C. Katsaras;T. Panagiotakos;B. Kolias
中科院分区：
文献类型：
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作者：
C. Katsaras;T. Panagiotakos;B. Kolias
当前设计规范将恢复能力（或重新定心能力）确定为隔震系统的基本特征。在本文中，对双线性滞回或摩擦隔震系统的恢复能力进行了一些详细研究。首先检查某些能源考虑因素，以便深入了解并揭示问题各个方面的控制参数。然后通过对平滑双线性单自由度滞回系统进行广泛的参数研究来研究恢复能力，参数涵盖一系列典型的隔震系统，经受住大量记录的地震。对参数分析的结果进行统计处理，并导出回归分析关系，显示震后残余位移和一系列连续地震后位移的累积累积对控制参数的依赖性。根据分析结果，确定了双线性系统确保足够恢复能力的特征。版权所有 © 2007 约翰·威利父子有限公司
The restoring capability (or re‐centering capability) is identified by the current design codes as a fundamental feature of seismic isolation systems. In this paper, the restoring capability of bilinear hysteretic or frictional seismic isolation systems is investigated in some detail. Certain energy considerations are examined first in order to provide insight into and reveal governing parameters on individual aspects of the problem. The restoring capability is then investigated through an extensive parametric study of smooth bilinear single‐degree‐of‐freedom hysteretic systems, with parameters covering a range of typical seismic isolation systems, subjected to a large group of recorded earthquakes. The results of the parametric analyses are processed statistically and regression analysis relations are derived that show the dependence of the residual displacement after the earthquake and the cumulative build up of displacements after a series of successive earthquakes on the governing parameters. Based on the analysis results, the features of the bilinear system that ensure sufficient restoring capability are identified. Copyright © 2007 John Wiley & Sons, Ltd.