基于Pushover方法的既有建筑结构安全性鉴定
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摘要
为了准确评估既有建筑结构的安全性,采用基于性能的抗震设计方法,结合《民用建筑可靠性鉴定标准》和《建筑地震破坏等级划分标准》,将Pushover方法用于既有建筑结构的安全性鉴定.以都江堰1栋遭遇"5.12"汶川地震破坏的框架结构为例,评定了该结构在预估地震作用下的安全性等级和地震破坏等级.结果表明,分析结果与实际震害基本吻合,证明采用Pushover方法能有效评估既有建筑结构的安全性.
In order to evaluate the safety of existing structures accurately,based on the method of performance-based seismic design and by combining with the national codes Standard for Appraiser of Reliability of Civil Building and Criteria for the Classification of the Buildings' Seismic Damage Ranks,the pushover method was adopted to appraise the safety of existing structures.By taking a frame structure damaged in the Wenchuan earthquake in Dujiangyan City as an example,the safety and earthquake damage levels of the structure were appraised under a given earthquake action.The research shows that the analysis result is dovetailed basically with the real earthquake damage,and the safety of existing structures can be assessed effectively through the pushover method.
In order to evaluate the safety of existing structures accurately,based on the method of performance-based seismic design and by combining with the national codes Standard for Appraiser of Reliability of Civil Building and Criteria for the Classification of the Buildings' Seismic Damage Ranks,the pushover method was adopted to appraise the safety of existing structures.By taking a frame structure damaged in the Wenchuan earthquake in Dujiangyan City as an example,the safety and earthquake damage levels of the structure were appraised under a given earthquake action.The research shows that the analysis result is dovetailed basically with the real earthquake damage,and the safety of existing structures can be assessed effectively through the pushover method.
引文
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[12]汪梦甫,王锐.基于位移的结构静力弹塑性分析方法的研究[J].地震工程与工程振动,2006,26(5):73-80.WANG Mengfu,WANG Rui.Study on displacementbased Pushover procedure[J].Earthquake Enginee-ring and Engineering Vibration,2006,26(5):73-80.
[2]Federal Emergency Management Agency.FEMA 273NEHRP national earthquake hazards reduction programguidelines for the seismic habilitation of buildings[S].Washington:The Building Seismic Safety Council,1997.
[3]Federal Emergency Management Agency.FEMA 356Prestandard and commentary for the seismic rehabi-litation of buildings[S].Washington:The BuildingSeismic Safety Council,2000.
[4]中华人民共和国建设部.GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[5]李国胜.多高层钢筋混凝土结构设计中疑难问题的处理及算例[M].北京:中国建筑工业出版社,2004:107-115.
[6]李国强,李杰,苏小卒.建筑结构抗震设计[M].北京:中国建筑工业出版社,2008:73-77.
[7]中华人民共和国建设部.GB 50292-1999民用建筑可靠性鉴定标准[S].北京:中国建筑工业出版社,1999.
[8]中华人民共和国建设部.JGJ 116-98建筑地震破坏等级划分标准[S].北京:中国建筑工业出版社,1990.
[9]中国建筑标准设计研究院.SAP2000中文版使用指南[M].北京:人民交通出版社,2006:451-459.
[10]汪大绥,贺军利,张凤新.静力弹塑性分析(Pushover Analysis)的基本原理和计算实例[J].世界地震工程,2004,20(1):46-53.WANG Dasui,HE Junli,ZHANG Fengxin.The basicprinciple and a case study of the static elastoplasticanalysis(pushover analysis)[J].World EarthquakeEngineering,2004,20(1):46-53.
[11]叶燎原,潘文.结构静力弹塑性分析(Push-over)的原理和计算实例[J].建筑结构学报,2000,21(1):37-43.YE Liaoyuan,PAN Wen.The principle of nonlinearstatic analysis(Push-over)and numerical examples[J].Journal of Building Structures,2000,21(1):37-43.
[12]汪梦甫,王锐.基于位移的结构静力弹塑性分析方法的研究[J].地震工程与工程振动,2006,26(5):73-80.WANG Mengfu,WANG Rui.Study on displacementbased Pushover procedure[J].Earthquake Enginee-ring and Engineering Vibration,2006,26(5):73-80.
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