| 基于颤振稳定性的悬索桥加劲梁梁高的确定 |
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| 引用本文： | 马如进,陈艾荣,胡晓红.基于颤振稳定性的悬索桥加劲梁梁高的确定[J].同济大学学报(自然科学版),2002,30(5):573-577. |
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| 作者姓名： | 马如进 陈艾荣 胡晓红 |
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| 作者单位： | 同济大学桥梁工程系,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 (5 9895 410) |
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| 摘 要： | 在悬索桥的抗风设计中，流线型箱梁由于具有较好的抗风性能而得到广泛应用。通过经验公式分析和有限元两种方法得出箱梁梁高对悬索桥颤振稳定性的影响规律，并提出了常用桥宽下悬索桥梁高设计的近似公式。另外,还通过对一种振型耦合的特殊现象进行了分析。
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| 关 键 词： | 颤振稳定性 悬索桥 加劲梁 梁高 振型耦合 参数分析 |
| 文章编号： | 0253-374X(2002)05-0573-05 |
| 修稿时间： | 2001年11月15 |
Decision on Height of Stiffened Girder of Suspension Bridges Based on Performance of Aerodynamic Stability |
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| MA Ru-jin,CHEN Ai-rong,HU Xiao-hong.Decision on Height of Stiffened Girder of Suspension Bridges Based on Performance of Aerodynamic Stability[J].Journal of Tongji University(Natural Science),2002,30(5):573-577. |
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| Authors: | MA Ru-jin CHEN Ai-rong HU Xiao-hong |
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| Abstract: | In the process of wind-resistance design of suspension bridges,streamlined box girder has been widely applied because of its better wind-resistance performance.In this paper,some laws about the influences of beam depth on flutter stability of suspension bridges are drawn by empirical formulas and FEM,and an approximate formula of design of beam depth of suspension bridges with a fixed width is proposed.In addition,some analysis on a special phenomenon of mode coupling is made in this paper. |
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| Keywords: | suspension bridge beam depth analysis of parameters flutter stability mode coupling |
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