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| FRP、钢箱梁斜拉桥抖振性能分析与比较 | |
| 引用本文： | 白玉磊,戴建国,欧进萍.FRP、钢箱梁斜拉桥抖振性能分析与比较[J].玻璃钢/复合材料,2011(5):53-57. |
| 作者姓名： | 白玉磊 戴建国 欧进萍 |
| 作者单位： | 1. 大连理工大学,辽宁大连 116024;香港理工大学土木工程系,香港 2. 香港理工大学土木工程系,香港 3. 大连理工大学,辽宁大连,116024 |
| 摘 要： | 基于某三跨钢箱梁斜拉桥的设计方案以及静力荷载作用下刚度等效的假设,类比设计了一座FRP斜拉桥。其桥面板、主梁以及斜拉索均采用FRP材料,桥塔采用传统的钢筋混凝土结构。采用谐波合成法模拟了主梁上各点的随机脉动风速时程,基于准定常假定,将脉动风速时程转化为抖振力时程,采用ANSYS软件对FRP斜拉桥进行抖振时域分析,并与钢箱梁斜拉桥进行对比。结果表明,FRP斜拉桥在抖振载作用下主梁竖向刚度与钢箱斜拉桥相比,有一定程度的减小,但FRP斜拉桥的竖向位移只是略有增加,总体易满足位移限值的要求。 |
| 关 键 词： | FRP斜拉桥 谐波合成法 脉动风速 抖振响应 时域分析 |
A COMPARATIVE STUDY OF THE BUFFETING PROPERTIES OF FRP AND STEEL BOX GIRDER CABLE-STAYED BRIDGES |
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| BAI Yu-lei,DAI Jian-guo,OU Jin-ping.A COMPARATIVE STUDY OF THE BUFFETING PROPERTIES OF FRP AND STEEL BOX GIRDER CABLE-STAYED BRIDGES[J].Fiber Reinforced Plastics/Composites,2011(5):53-57. | |
| Authors: | BAI Yu-lei DAI Jian-guo OU Jin-ping |
| Affiliation: | BAI Yu-lei1,2,DAI Jian-guo2,OU Jin-ping1(1.Dalian University of Technology,Dalian 116024,China,2.Department of Civil and Structural Engineering,The Hong Kong Polytechnic University,Hong Kong,China) |
| Abstract: | In this paper,the time domain buffeting analysis of a three-span FRP cable-stayed bridge(FRP bridgehereafter for brevity) is conducted.The FRP cable-stayed bridge has FRP deck systems,FRP main girders and FRP cables,it is formed based on the design scheme of a steel streamline shaped box girder cable-stayed bridge(steel bridgehereafter for brevity) and the equivalent stiffness method.For cost effectiveness,the bridge tower is still made of traditional reinforced concrete.The wind field of the bridge is simu... |
| Keywords: | FRP cable-stayed bridge WAWS method turbulent wind speed buffeting response time domain analysis |
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