| 大跨径斜拉桥在龙卷风作用下的响应分析 |
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| 引用本文： | 陈艾荣,刘志文,周志勇.大跨径斜拉桥在龙卷风作用下的响应分析[J].同济大学学报(自然科学版),2005,33(5):569-574. |
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| 作者姓名： | 陈艾荣 刘志文 周志勇 |
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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
2. 湖南大学,风工程试验研究中心,湖南,长沙,410082 |
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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： | 研究了龙卷风对大跨径斜拉桥的作用，基于准定常理论提出了龙卷风对桥梁主梁的作用模式，初步探讨了龙卷风对桥梁结构作用的特点，并结合苏通大桥初步设计方案进行了龙卷风作用下的响应分析．研究显示大跨径斜拉桥在龙卷风作用下，表现出强烈的局部性和竖向托起效应。
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| 关 键 词： | 龙卷风 斜拉桥 风场模拟 时程响应 |
| 文章编号： | 0253-374X(2005)05-0569-06 |
Tornado Effects on Large Span Cable-Stayed Bridges |
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| CHEN Ai-rong,LIU Zhi-wen,ZHOU Zhi-yong.Tornado Effects on Large Span Cable-Stayed Bridges[J].Journal of Tongji University(Natural Science),2005,33(5):569-574. |
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| Authors: | CHEN Ai-rong LIU Zhi-wen ZHOU Zhi-yong |
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| Institution: | CHEN Ai-rong1,LIU Zhi-wen2,ZHOU Zhi-yong1 |
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| Abstract: | Based on the research of tornado effects on structures,the tornado effects on large span cable-stayed bridges are given.The tornado loading on bridges is calculated based on quasi-steady theory.The features of response of structures under tornado are discussed.Time history of response of Sutong Bridge under tornado is also given ignoring the inertia influence.The results show that the response of large span cable-stayed bridges under tornado is significant. |
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| Keywords: | tornado cable-stayed bridge wind field simulation time history of response |
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