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浙江大学学报(工学版)
J4  2013, Vol. 47 Issue (11): 1926-1931    DOI: 10.3785/j.issn.1008-973X.2013.11.006
土木工程     
等效线性化方法在基于位移抗震设计中的应用
苏亮,索靖
浙江大学 空间结构研究中心,浙江 杭州 310058
Comparison of different equivalent linearization approaches applied to displacement-based seismic design methodology
SU Liang, SUO Jing
Space Structures Research Center, Zhejiang University, Hangzhou 310058, China
 全文: PDF 
摘要：

为了比较割线刚度法和两维搜索法2种等效线性化方法在基于位移抗震设计中的应用,对比阐述上述2种等效方法确定等效参数的基本原理和基于位移抗震设计的步骤,同时推导分析2种方法应用下结构基底剪力设计值的差别,并通过钢筋混凝土框架结构的设计算例考察其对结构抗震设计的影响.结果表明,应用2种等效方法得到的基底剪力比值只与结构的非线性滞回模型和延性系数有关；在延性系数为3.0的情况下,按割线刚度法设计得到的基底剪力将被放大20%左右,从而使通常的结构抗震设计趋于保守.
关键词： 等效线性化;  非线性位移反应;  基于位移;  基底剪力;  抗震设计    
Abstract:

Displacement-based seismic design adopts equivalent linearization approach to estimate the maximum inelastic displacement of the structural system. The appropriate equivalent natural period and effective damping are the key points to insure a reliable displacement estimation of the approach. Application comparison of two different equivalent linearization approaches, secant-stiffness approach and 2D searching approach, was mainly carried out in the study when they were applied to displacement-based seismic design methodology. The basic principle of two equivalent approaches and the detailed procedure of displacement-based seismic design methodology were introduced and the design base shear forces were deduced and compared when the two different equivalent approaches were adopted. The influence of two approaches on the seismic design of structures was investigated through a reinforced concrete frame structure design example. Research results indicate that the ratio of design base shear forces that obtained through the two different equivalent linearization approaches is only decided by the structural nonlinear hysteretic model and the ductility coefficient. For the general design case that the ductility coefficient equal to 3.0, the base shear force is amplified by 20% or so when the secant-stiffness approach adopted, and thus the structural seismic design tends to be conservative when compared with the 2D searching approach.
Key words: equivalent linearization    inelastic displacement response    displacement-based    base shear    seismic design
出版日期: 2013-12-05
:  TU 393.3  
基金资助:

 国家青年自然基金资助项目(50908206)；浙江省重点科技创新团队资助项目(2010R50034).
作者简介: 苏 亮(1975-)，男，副教授，主要从事结构工程方面的研究.E-mail:suliang@zju.edu.cn
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引用本文:

苏亮,索靖. 等效线性化方法在基于位移抗震设计中的应用[J]. J4, 2013, 47(11): 1926-1931.

SU Liang, SUO Jing. Comparison of different equivalent linearization approaches applied to displacement-based seismic design methodology. J4, 2013, 47(11): 1926-1931.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2013.11.006    或    http://www.zjujournals.com/xueshu/eng/CN/Y2013/V47/I11/1926

［1］ PRIESTLEY M J N, CALVI G M, KOWALSKY M J. Direct displacement-based seismic design of structures ［M］. Pavia, Italy: IUSS Press, 2007:221-312．
［2］ 郭磊, 李建中, 范立础. 直接基于位移的结构抗震设计理论研究进展 ［J］. 世界地震工程, 2005, 21(4): 157-164．
GUO Lei, LI Jianzhong, FAN Lichu. Stateoftheart of direct displacementbased seismic design theory for structures ［J］. World Earthquake Engineering, 2005, 21(4): 157-164.
［3］ KOWALSKY M J, PRIESTLEY M J N, MACRAE G A. Displacementbased design of RC bridge column in seismic regions ［J］. Earthquake Engineering and Structural Dynamics, 1995, 24(12): 1623-1643.
［4］ 李刚, 程耿东. 基于性能的结构抗震设计：理论、方法与应用 ［M］. 北京: 科学出版社, 2004:1-13.
［5］ GUYADER A C, IWAN D. Determining equivalent linear parameters for use in a capacity spectrum method of analysis ［J］. Journal of Structural Engineering, 2006, 132(1): 59-67．
［6］ MIRANDA E, RUZIGARCIA J. Evaluation of approximate methods to estimate maximum inelastic displacement demands ［J］. Earthquake Engineering and Structural Dynamics, 2002, 31: 539-560．
［7］ LIN Y Y, MIRANDA E. Noniterative equivalent linear method for evaluation of existing structures ［J］. Journal of Structural Engineering, 2008, 134(11): 1685-1695．
［8］ 苏亮, 王毅. 等效线性化方法中系统参数求解的最优化算法 ［J］. 工程力学, 2011, 28(9): 23-29．
SU Liang, WANG Yi. New optimization algorithm for determining system parameters of equivalent linearization method ［J］. Engineering Mechanics, 2011, 28(9): 23-29.
［9］ XIAO N, SU L, WANG Y. Utilization of particle swarm optimization in equivalent linearization method applied to earthquake engineering ［J］. Advances in Structural Engineering, 2011, 14(2): 179-188.
［10］ 王毅. 地震工程中的等效线性化方法研究 ［D］. 杭州：浙江大学, 2011．
WANG Yi. Research on equivalent linearization method applied in earthquake engineering ［D］. Hangzhou:Zhejiang University, 2011．
［11］ Eurocode 8, Design of structures for earthquake resistancePart 1: general rules: seismic actions and rules for buildings［S］. Brussels, Belgium: European Committee for Standardization, 1998．
［12］ GB 500102010. 混凝土结构设计规范［S］. 北京：中华人民共和国住房和城乡建设部, 中国建筑工业出版社,2010．
［13］ CROWLEY H, PINHO H, BOMMER J J. A probability displacementbased vulnerability assessment procedure for earthquake loss estimation ［J］. Bulletin of Earthquake Engineering ,2004, 2(2):173-219．
［14］ SeismoSoft. SeismoStruct  A computer program for static and dynamic nonlinear analysis of framed structures, (online)\
[CP/DK\]. Available from URL: www.seismosoft.com,c2005．
［15］ MANDER J B, PRIESTLEY M J N, PARK R. Theoretical stressstrain model for confined concrete ［J］. Journal of Structural Engineering, 1988, 114(8): 1804-1826.
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