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基于结构Push-over曲线的目标位移的确定
俞瑞芳1,张俊发2,周锡元3
摘 要

(1 中国地震局地球物理研究所,北京 100081; 2 西安理工大学水利水电学院,西安 710048;3 北京工业大学工程抗震与结构诊治北京市重点试验室,北京 100022)
[摘要]结合我国现行抗震规范中的弹性反应谱,给出了基于结构Pushover曲线的目标位移的确定方法,并据此对结构抗震性能进行了评估。经对比分析,列举了确定等效单自由度体系粘滞阻尼比的实用公式。此外,以规范反应谱为目标谱,合成人工地震波对结构进行弹塑性时程分析,检验简化计算结果。实例分析表明,所给出的目标位移的确定方法有较好的精度,便于工程技术人员掌握,是进行抗震性能设计的实用方法。
[关键词]目标位移; Push-over曲线;等效阻尼比;弹性反应谱
A method for determining target displacement based on structural Push-over curve
Yu Ruifang1,3, Zhang Junfa2, Zhou Xiyuan3 (1 Institute of Geophysics, China Earthquake Administration, Beijing 100081,China;2 Xi′an University of Technology, Xi′an 710048,China;3 Beijing University of Technology, Beijing 100022,China)
Abstract:A method of calculating target displacement, which is based on structural Push-over curve and elastic response spectra given in Chinese aseismic code, is deduced and then is used to estimate structural performance. Some formulas for calculating viscous damping ratio of equivalent single-degree-freedom system are analyzed and compared. In addition, the elasticplastic time history analysis is adopted to check the results obtained from simplified method under a man-made seismic wave input. The analysis results show that the simplified method has good precision and is convenience to be mastered and used by engineers, so that it is a practical approach for carrying out seismic performance based design.
Keywords:target displacement; Push-over curve; equivalent damping ratio; elastic response spectra
中国地震局地球物理研究所基本科研业务专项(DQJB06B02)。
作者简介:俞瑞芳,博士,副研究员,Email:yuruifang@emails.bjut.edu.cn。
参考文献
[1]杨溥,李英民,王亚勇,等. 结构静力弹塑性分析(push-over)方法的改进[J]. 建筑结构学报,2000,21(2):44-50
[2]GB50011—2001建筑抗震设计规范[S]北京:中国建筑工业出版社,2001.
[3]叶献国,周锡元.建筑结构地震反应简化分析方法的进一步改进[J]. 合肥工业大学学报(自然科学版),2000,23(2):149-153
[4]周锡元.抗震性能设计与三水准设防[J].土木水利,30(5),2003:21-32,中国台湾土木水利工程学会转载.
[5]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[6]ATC—40,Seismic evaluation and retrofit of concrete buildings. Applied Technology Council. Red wood city, California, 1996.

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