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原文传递 Effects of Lead Core Heating on the Superstructure Response of Isolated Buildings

题名：	Effects of Lead Core Heating on the Superstructure Response of Isolated Buildings
其他题名：	AASHTO.(2010).AASHTO LRFD bridge design specifications,5th Ed.,Washington,DC.
正文语种：	英文
作者：	Sedar Arguc
关键词：	Seismic isolation;Lead rubber bearing;Dynamic analyses;Earthquake;Bounding analysis;Structural control
摘要：	Strength of lead rubber bearings (LRBs) deteriorates as a function of temperature rise in the lead core under cyclic motions. Accordingly, the isolator exhibits a gradual change in its hysteretic behavior that affects both the energy dissipation capacity and lateral strength of isolator. Thus, the superstructure response may change due to variation in the characteristics of LRB. This paper focuses on the effects of lead core heating on the superstructure response of seismically isolated buildings (SIBs) in terms of peak floor accelerations and story drift ratios. A parametric study was performed for two different seismically isolated buildings by conducting bounding analyses (nondeteriorating hysteresis loops for LRBs) and temperature-dependent analyses (deteriorating hysteresis loops for LRBs). A 20-story reinforced concrete (RC) and a 3-story steel structure were subjected to earthquake excitations to assess the effects of isolator properties such as isolation period and characteristic strength-to-weight ratio on the superstructure response. Results revealed that the success of bounding analyses to provide a safe envelope for superstructure response depends on the characteristics of SIB.
出版年：	2017
论文唯一标识：	P-26Y2017V143N10016
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/(ASCE)ST.1943-541X.0001880
期刊名称：	Journal of Structural Engineering
拼音刊名(出版物代码)：	P-26
卷：	143
期：	10
页码：	184-198