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工程力学  2013 

关于概率地震需求模型的讨论

DOI: 10.6052/j.issn.1000-4750.2012.04.0278, PP. 172-179

Keywords: 概率地震需求模型,对数正态模型,对数线性关系,基于性能的地震工程,钢筋混凝土框架结构

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Abstract:

概率地震需求分析作为地震易损性分析和地震风险分析的重要一环,已经成为新一代基于性能地震工程(PBEE)的主要研究内容。概率地震需求分析的核心内容是建立概率地震需求模型,它表征了地震动强度与地震需求之间的概率关系。在某一强度地震动作用下,通常假设地震需求服从对数正态分布,其中,地震需求的中位值和地震动强度之间假设服从对数线性关系,而地震需求的对数标准差则假设保持不变。该文以4个不同高度、不同设防水准的钢筋混凝土框架结构为例,挑选100条实际地震动为输入,针对上述概率地震需求模型基本假设的合理性进行了讨论。研究结果表明:综合考虑计算精度和效率,关于地震需求中位值和对数标准差的假设可以满足概率地震需求模型的要求,而传统的对数正态概率地震需求模型无法考虑倒塌的影响,应予以修正。

References

[1]  Cornell C A,Jalayer F,Hamburger R O,Foutch D A. The probabilistic basis for the 2000 SAC/FEMA steel moment frame guidelines [J]. ASCE Journal of Structural Engineering, 2002, 128(4): 526―533.
[2]  McKenna F,Fenves G L,Scott M H. Open system for earthquake engineering simulation [R]. Pacific Earthquake Engineering Research Center, University of California at Berkeley, California, 2008.
[3]  吕大刚,于晓辉,潘峰,王光远. 基于改进云图法的结构概率地震需求分析[J]. (世界地震工程), 2010, 20(1): 7―15.Lü Dagang,Yu Xiaohui,Pan Feng,Wang Guangyuan. Probabilistic seismic demand analysis of structures based on an improved cloud method [J].Lü Dagang, Yu Xiaohui, Pan Feng, Wang Guangyuan. Probabilistic seismic demand analysis of structures based on an improved cloud method [J]. World Earthquake Engineering, 2010, 20(1): 7―15. (in Chinese)
[4]  Power M,Chiou B,Abrahamson N,Bozorgnia,et al. An overview of the NGA project [J]. Earthquake Spectra, 2008, 24(1): 3―22.
[5]  Chiou B,Darragh R,Gregor N,Silva W. NGA project strong-motion database [J]. Earthquake Spectra, 2008, 24(1): 23―44.
[6]  PEER strong motion database [M/O]. PEER strong motion database [M/O]. http:// peer. berkeley.edu/nga, 2011.4.
[7]  Medina R,Krawinkler H. Seismic demands for non-deteriorating frame structures and their dependence on ground motions [R]. PEER Report: 2003/15, Pacific Earthquake Engineering Research Center, 2003.
[8]  ATC-63 (Project Report-90 Draft). Quantification of building seismic performance factors [S].ATC-63 (Project Report-90 Draft). Quantification of building seismic performance factors [S]. Applied Technology Council, 2008.
[9]  Park Y J,Ang A H S. Mechanistic seismic damage model for reinforced concrete [J]. ASCE Journal of Structural Engineering, 1985, 111(4): 722―739.
[10]  Luco N,Cornell C A. Structure-specific scalar intensity measures for near-source and ordinary earthquake ground motions [J]. Earthquake Spectra, 2007, 23(2): 357―392.

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