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工程力学  2014 

复杂体型屋盖表面风压的高阶统计量与非高斯峰值因子

DOI: 10.6052/j.issn.1000-4750.2013.05.0398, PP. 181-187

Keywords: 大跨屋盖,长时距,峰值因子,峰度,硬响应

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Abstract:

该文研究了某站台结构刚性屋盖风洞实验中风压统计量对于数据时长的敏感性。采用不同时长的数据计算长时距脉动风压数据的偏度和峰度,结果表明高阶统计量具有非平稳特性,峰度的值受数据时长的变化影响显著。根据随机数据的峰度是否大于3,可以将其划分为软响应过程和硬响应过程。通过分析此建筑屋盖表面风压数据,发现屋盖表面存在峰度小于3的硬响应测点。而现有的峰值因子计算方法都没有具体探讨其对于这种峰度小于3的硬响应测点的适用性,该文将不同计算方法得到的软响应和硬响应峰值因子结果与标准统计方法计算值进行对比,进而判断各种方法的优劣性。结果表明非高斯峰值因子计算当中不宜引入峰度这个参数,TPP方法对于计算硬响应过程和软响应过程的非高斯峰值因子都有很好的适用性。

References

[1]  Huang M F, Lou W J, Chan C, Lin N, Pan X T. Peak distributions and peak factors of wind-induced pressure processes on tall building [J]. Journal of Engineering Mechanics, ASCE, 2013, 139(12): 1744-1756.
[2]  Winterstein S R. Moment-based hermite models of random vibration [R]. Technical Report R-219, Technical University of Denmark, Lyngby, 1987.
[3]  Winterstein S R. Nonlinear vibration models for extremes and fatigue [J]. Journal of Engineering Mechanics, ASCE, 1988, 114(10): 1772-1790.
[4]  Huang M F, Lou W J, Chan C and Sheng B. Peak factors of non-Gaussian wind forces on a complex-shaped tall building [J]. Structure Design of Tall and Special Building, 2013, 22(14): 1105-1118.
[5]  全涌, 顾明, 陈斌, 等. 非高斯风压的极值计算方法[J]. 力学学报, 2010, 42(3): 560-566. Quan Yong, Gu Ming, Chen Bin, et al. Study on the extreme value estimating method of non-Gaussian wind pressure [J]. Journal of Theoretical and Applied Mechanics, 2010, 42(3): 560-566. (in Chinese)
[6]  Davenport A G. Note on the distribution of the largest value of a random function with application to gust loading [C]. Proceedings of the Institution of Civil Engineers, 1964, 28: 187-196.
[7]  Kareem A, Zhao J. Analysis of non-Gaussian surge response of tension leg platforms under wind loads [J]. Journal of Off-shore Mechanics and Arctic Engineering , ASCE, 1994, 116: 137-144.
[8]  Kwon D, Kareem A. Peak factors for non-Gaussian load effects revisited [J]. Journal Structural Engineering, ASCE, 2011, 137(12): 1611-1619.
[9]  Sadek F, Simiu E. Peak non-Gaussian wind effects for database-assisted low-rise building design [J]. Journal of Engineering Mechanics, ASCE, 2002, 128(5): 530-539.
[10]  王飞, 全涌, 顾明. 基于广义极值理论的非高斯风压计算方法[J]. 工程力学, 2013, 30(2): 44-50. Wang Fei, Quan Yong, Gu Ming. An extreme-value estimation of Non-Gaussian wind pressure based on generalized extreme value theory [J]. Journal of Engineering Mechanics, 2013, 30(2): 44-50. (in Chinese)
[11]  田玉基, 杨庆山. 国家体育场屋盖结构风振响应的时域分析[J]. 工程力学, 2009, 26(6): 95-99. Tian Yuji, Yang Qingshan. Wind-induced response of Beijing National Stadium using time history analysis method [J]. Journal of Engineering Mechanics, 2009, 26(6): 95-99. (in Chinese)
[12]  Winstertein S R, Ude T C, Kleiven G. Springing and slow-drift responses: Predicted extremes and fatigue vs. simulation [C]. 7th International Conference on the Behaviour of Offshore Structures, 1994, 3: 1-15.

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