| 考虑风偏角影响的大跨径拱桥横向风荷载试验 |
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| 引用本文： | 王瑀,马如进,涂熙.考虑风偏角影响的大跨径拱桥横向风荷载试验[J].长安大学学报(自然科学版),2011(5). |
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| 作者姓名： | 王瑀 马如进 涂熙 |
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| 作者单位： | 长安大学公路学院;宁波通途投资开发有限公司;同济大学桥梁工程系; |
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| 基金项目： | 国家自然科学基金项目(50708073) |
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| 摘 要： | 依据某大跨径拱桥全桥气弹模型风洞试验,研究了不同风偏角下结构的横向风荷载响应。试验对模型的动力特性和静力刚度进行了测定,并采用紊流场模拟桥址处的风环境,进行了0°～90°风偏角下不同风速的试验。试验验证了该拱桥的气动安全性。数据分析结果表明:当风向为正横桥向时,桥梁结构的风作用处于最不利状态,结构关键位置随风偏角的增大而增大;斜风向下桥梁实际风荷载效应比采用三角函数分解方法叠加得到结构风荷载效应更为不利。
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| 关 键 词： | 桥梁工程 大跨径拱桥 斜风 风荷载 风洞试验 横风效应 |
Test on transversal wind load effect of long-span arch bridge with influence of skew wind |
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| WANG Yu,MA Ru-jin,TU Xi.Test on transversal wind load effect of long-span arch bridge with influence of skew wind[J].JOurnal of Chang’an University:Natural Science Edition,2011(5). |
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| Authors: | WANG Yu MA Ru-jin TU Xi |
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| Institution: | WANG Yu1,3,MA Ru-jin2,TU Xi2(1.School of Highway,Chang'an University,Xi'an 710064,Shaanxi,China,2.Department of Bridge Engineering,Tongji University,Shanghai 200092,3.Ningbo Tongtu Investment Development Co Ltd,Ningbo 315000,Zhejiang,China) |
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| Abstract: | Based on the wind tunnel tests on the aero elastic model of a long-span arch bridge,this paper researched the effect of structure under transversal wind loads on different skew angles.The dynamic characteristics and static rigidity of model were tested,and the structure was tested under transversal wind loads on different skew angles.The analysis shows that the bridge will come to the role of the most adverse condition when the wind direction is cross-bridge.And the corresponding key position in the bridge ... |
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| Keywords: | bridge engineering long-span arch bridge skew wind wind load wind tunnel test transversal wind load effect |
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