| 大跨径斜拉桥斜拉索静风荷载计算方法比较 |
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| 引用本文： | 刘志文,陈艾荣,周志勇,马如进.大跨径斜拉桥斜拉索静风荷载计算方法比较[J].同济大学学报(自然科学版),2005,33(5):575-579. |
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| 作者姓名： | 刘志文 陈艾荣 周志勇 马如进 |
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| 作者单位： | 1. 同济大学,土木工程防灾国家重点实验室,上海,200092;湖南大学,风工程试验研究中心,湖南,长沙,410082
2. 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： | 国家自然科学基金重大资助项目(50478109)，高等学校博士学科点专项科研基金资助项目(20040247026). |
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| 摘 要： | 针对大跨径斜拉桥对风荷载作用十分敏感的特点，分析了斜拉索风荷载的不同计算方法的差异，并以苏通长江公路大桥为例比较了不同计算方法对关键截面响应的影响．分析表明，对于大跨径斜拉桥，斜拉索上的风荷载计算方法对关键截面的响应影响较大；横桥向风作用下，在不考虑斜拉索设计风速的误差的前提下，可将斜拉索上风荷载平均分配到其端部；顺桥向风荷载作用下，则斜拉索上风荷载应直接作用在拉索分段的节点上。
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| 关 键 词： | 斜拉桥 斜拉索 风荷载 |
| 文章编号： | 0253-374X(2005)05-0575-05 |
Comparison of Calculation Methods of Static Wind Loading on Stay Cables of Large Span Cable-Stayed Bridges |
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| LIU Zhi-wen,CHEN Ai-rong,ZHOU Zhi-yong,MA Ru-jin.Comparison of Calculation Methods of Static Wind Loading on Stay Cables of Large Span Cable-Stayed Bridges[J].Journal of Tongji University(Natural Science),2005,33(5):575-579. |
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| Authors: | LIU Zhi-wen CHEN Ai-rong ZHOU Zhi-yong MA Ru-jin |
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| Institution: | LIU Zhi-wen 1,2,CHEN Ai-rong1,ZHOU Zhi-yong1,MA Ru-jin1 |
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| Abstract: | The present paper is devoted to the difference of calculation methods of static wind loading on stay cables of large-span cable-stayed bridges.The response of the key sections of Sutong Bridge under static wind loading was calculated by several methods.The results show that the calculation methods of wind loading on cables have great influences on the response of the key sections of the large-span cable-stayed bridge.The wind loading on cables under horizontal wind can be translated to the ends of cable equally when the errors of design wind speed of cables could be tolerated.The wind loading on cables should be distributed on nodes of cables directly under along bridge wind loading. |
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| Keywords: | cable-stayed bridge inclined cables static wind loading |
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