全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2014 

强震作用下竖向不规则结构的延性折减系数研究

DOI: 10.6052/j.issn.1000-4750.2012.10.0802, PP. 189-195

Keywords: 延性折减系数,修正系数,竖向不规则,速度脉冲地震作用,非线性动力分析

Full-Text   Cite this paper   Add to My Lib

Abstract:

通过修正参考竖向规则结构的抗震延性折减系数,研究竖向不规则结构在速度脉冲强震作用下的延性折减系数。采用集中质量剪切型多自由度模型,阐述了速度脉冲地震作用下竖向规则结构延性折减系数运用于竖向不规则结构的修正系数研究方法,分析了该修正系数的影响因素。分析结果表明,竖向不规则结构的延性折减系数明显小于参考规则结构的延性折减系数。修正系数的主要影响因素是不规则比率和延性系数,其随着不规则比率减小或延性需求增大而减小。周期和楼层数对该修正系数的影响较小。同时,通过比较得出,速度脉冲地震作用下修正系数比相应非速度脉冲地震作用下修正系数值小。最后,通过对计算结果取平均值,给出了修正系数的建议值,并与欧洲抗震规范中修正系数的取值进行了比较。

References

[1]  IBC-2006. International building code [S]. Falls Church, V A: International Code Council, 2006.
[2]  NBCC-05. The national building code of Canada [S]. Ottawa: National Research Council, 2005.
[3]  Eurocode 8, Design of structures for earthquake resistance [S]. CEN, Brussels, Belgium: European Committee for Standardizations, 2004.
[4]  TJ11-78, 工业与民用建筑抗震设计规范[S]. 北京: 中国建筑工业出版社, 1979.
[5]  门进杰, 史庆轩, 周琦. 竖向不规则钢筋混凝土框架结构基于性能的抗震设计方法[J]. 土木工程学报, 2008, 41(9): 67―75.
[6]  周靖, 补国斌, 方小丹. 速度脉冲地震作用下竖向不规则结构位移延性需求分析[J]. 土木工程学报, 2010, 43(增刊1): 220―227.
[7]  Bertero V V, Mahin S A, Herrera R A. Aseismic design implication of near-fault San Fernando earthquake records [J]. Earthquake Engineering and Structural Dynamics, 1978, 6(1): 31―42.
[8]  Krawinkler H, Medina R, Alavi B. Seismic drift and ductility demands and their dependence on ground motions [J]. Engineering Structures, 2003, 25(5): 637―653.
[9]  AS/NZS 1170.4, Structural design actions-Part 4 earthquake actions, General Design Requirement and Loading on Structures [S]. Australian/New Zealand, 2004.
[10]  Baker J W. Quantitative classification of near-fault ground motions using wavelet analysis [J]. Bulletin of the Seismological Society of America, 2007, 97(5): 1486―1501.
[11]  GB50011-2010, 建筑抗震设计规范[S]. 北京: 中国建筑工业出版社, 2010.
[12]  Canny. Three-dimensional nonlinear static/dynamic structural analysis computer program [CP]. http:// members.shaw.ca/CannyNAS, 2012-08-10.
[13]  翟长海, 谢礼立. 多自由度体系效应对强度折减系数的影响[J]. 工程力学, 2006, 23(11): 33―37, 69.
[14]  Zhai Changhai, Xie Lili. Estimation of MDOF effects on strength reduction factors [J]. Engineering Mechanics, 2006, 23(11): 33―37, 69. (in Chinese)
[15]  Soni D P, Mistry B B. Qualitative review of seismic response of vertically irregular building fames [J]. ISET Journal of Earthquake Technology, 2006, 43(4): 121―132.
[16]  周靖, 赵卫锋, 刘智林. 竖向不规则结构抗震性能研究现状及其在设计规范中的应用[J]. 力学进展, 2009, 39(1): 51―60.
[17]  Athanassiadou C J. Seismic performance of RC plane frames irregular in elevation [J]. Engineering Structures, 2008, 30(5): 1250―1261.
[18]  Valmundsson E V, Nau J M. Seismic response of building frames with vertical structural irregularities [J]. Journal of Structural Engineering, 1997, 123(1): 30―41.
[19]  Chintanapakdee C, Chopra A K. Seismic response of vertically irregular frames: response history and modal pushover analyses [J]. Journal of Structural Engineering, 2004, 130(8): 1177―1185.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133