| 桅杆结构随机风振疲劳研究 |
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| 引用本文： | 邓洪洲,屠海明,王肇民. 桅杆结构随机风振疲劳研究[J]. 土木工程学报, 2003, 36(4): 19-23 |
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| 作者姓名： | 邓洪洲 屠海明 王肇民 |
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| 作者单位： | 同济大学(邓洪洲，屠海明)，同济大学(王肇民) |
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| 基金项目： | 国家自然科学基金 (50 1 780 52 )资助项目 |
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| 摘 要： | 桅杆结构随机风振疲劳是宽带随机疲劳过程。本文基于结构宽带随机疲劳理论 ,给出桅杆结构随机风振疲劳分析方法。结合桅杆模型风洞试验结果 ,得出桅杆结构宽带随机疲劳分析的谱宽参数ε和修正系数λ。最后 ,通过一个工程算例 ,进一步给出用等效应力法、等效窄带法及雨流法计算桅杆结构风振疲劳分析过程 ,并得出了一些有益于工程设计参考的结论
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| 关 键 词： | 桅杆结构 风振疲劳 宽带随机过程 宽带疲劳分析 风洞试验 |
| 文章编号： | 1000-131X(2003)04-0019-05 |
| 修稿时间： | 2001-01-05 |
STUDY ON STOCHASTIC FATIGUE OF GUYED MASTS UNDER WIND LOAD |
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| Deng Hongzhou Tu Haiming Wang Zhaomin. STUDY ON STOCHASTIC FATIGUE OF GUYED MASTS UNDER WIND LOAD[J]. China Civil Engineering Journal, 2003, 36(4): 19-23 |
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| Authors: | Deng Hongzhou Tu Haiming Wang Zhaomin |
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| Abstract: | A stochastic fatigue of guyed masts under wind load is studied in the paper. The wind-induced fatigue of guyed masts is a process of the wide-band stochastic fatigue. A theoretical method for the masts is proposed; it is based on a wide-band stochastic fatigue theory. The wide-band parameter and the modified coefficient are also obtained with the results of the wind tunnel test. The equivalent stress, the equivalent narrow-band, and the rain-flow cycle counting are used in whole process. At last, an engineering example is given to illustrate the method. A comparison between the results of the method and other data is carried out; it is obtained some useful conclusions. |
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| Keywords: | guyed mast wind-induced fatigue wide-band stochastic process wide band fatigue analysis wind tunnel test |
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