| 风速风向联合分布对结构风致疲劳寿命可靠性的影响 |
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| 引用本文： | 王钦华,顾明.风速风向联合分布对结构风致疲劳寿命可靠性的影响[J].振动与冲击,2009,28(12):167-171. |
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| 作者姓名： | 王钦华 顾明 |
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| 作者单位： | 同济大学,土木工程防灾国家重点实验室,上海,200092 |
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| 基金项目： | 国家自然科学基金创新研究群体科学基金，国家自然科学基金重大研究计划重点项目，国家自然科学基金重点项目 |
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| 摘 要： | 在进行结构风振疲劳寿命可靠性分析时，需要先求得建筑结构所在位置处的风速风向联合分布函数。本文首先对建筑结构附近两个气象站的气象资料进行统计分析，得到建筑结构位置处两个不同的风速风向联合分布函数，然后分析了不同的风速风向联合分布函数对一实际结构系统风振疲劳主要失效模式以及结构系统风振疲劳失效概率的影响。本文分析表明：用不同的风速风向联合分布函数计算风振疲劳寿命时会得到不同数目的主要失效模式，并且对结构系统的风振疲劳失效概率影响较大。
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| 关 键 词： | 风速风向联合分布 结构系统 风致疲劳 |
| 收稿时间： | 2009-7-29 |
| 修稿时间： | 2009-8-11 |
Influence of joint distribution of wind speed and wind direction on wind-induced fatigue life reliability |
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| WANG Qin-hua,GU Ming.Influence of joint distribution of wind speed and wind direction on wind-induced fatigue life reliability[J].Journal of Vibration and Shock,2009,28(12):167-171. |
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| Authors: | WANG Qin-hua GU Ming |
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| Abstract: | The joint probability distribution functions of wind speed and direction were derived on the basis of wind data from two weather stations near a real structure. The effects of different distribution functions of wind speed and direction on the wind-induced failure modes and the failure probability of the structure were studied. The analysis results show that different distribution functions of wind speed and direction may result in different failure modes in calculation of wind-induced structural fatigue life,and moreover,have great influence on structural fatigue failure probability. |
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| Keywords: | joint distribution of wind speed and direction structural system wind-induced fatigue |
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