| 考虑非高斯和宽带修正的桅杆风振疲劳分析 |
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| 引用本文： | 徐建波,邓洪洲,王肇民.考虑非高斯和宽带修正的桅杆风振疲劳分析[J].同济大学学报(自然科学版),2004,32(7):889-892. |
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| 作者姓名： | 徐建波 邓洪洲 王肇民 |
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| 作者单位： | 同济大学,建筑工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目 ( 5 0 1780 5 2 ) |
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| 摘 要： | 基于结构随机疲劳理论 ,给出了桅杆结构随机风振疲劳的分析方法 .在分析过程中考虑了桅杆结构在风荷载作用下响应的非高斯性以及宽带的影响 .得到了由非高斯性对桅杆疲劳引起的修正系数λ1和宽带因素引起的修正系数λ2 .最后 ,结合一个工程实例 ,给出了桅杆结构疲劳寿命计算的详细过程 .结果表明 ,与其他频域内的计算方法相比 ,该理论计算结构累积疲劳损伤的结果更加精确 .
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| 关 键 词： | 桅杆结构 风振疲劳 非高斯性 宽带随机过程 |
| 文章编号： | 0253-374X(2004)07-0889-04 |
Study on Stoshastic Fatigue of Guyed Masts under Wind Load Considering No-Gaussian and Wide-band Modification |
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| XU Jian-bo,DENG Hong-zhou,WANG Zhao-min.Study on Stoshastic Fatigue of Guyed Masts under Wind Load Considering No-Gaussian and Wide-band Modification[J].Journal of Tongji University(Natural Science),2004,32(7):889-892. |
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| Authors: | XU Jian-bo DENG Hong-zhou WANG Zhao-min |
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| Abstract: | Based on the structural stochastic fatigue theory,this paper presents analysis methods of stochastic fatigue of guyed masts under wind load,in which the effects of no-Gaussian and wide-band are considered.The correction coefficients caused by no-Gaussian and wide-band are acquired.Finally,an engineering example is given to illustrate the detailed process.The result shows that compared with other methods in frequency domain,the fatigue life calculated by the method presented in this paper is more precise. |
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| Keywords: | guyed masts wind-induced fatigue no-Gaussian wide-band stochastic process |
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