| 悬索桥中央扣对活载挠度影响的详细计算方法 |
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| 引用本文： | 郑凯锋,胥润东,栗怀广.悬索桥中央扣对活载挠度影响的详细计算方法[J].世界桥梁,2009(2). |
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| 作者姓名： | 郑凯锋 胥润东 栗怀广 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 摘 要： | 针对大跨悬索桥中不对称加载挠度大和最大活载挠度不在跨中的现象,比较了中央扣引起的活载挠度包络图的差异.分别选取中央扣两边的主缆为研究对象,根据相容方程,利用柔索计算的虚拟梁法求解了具有中央扣的大跨悬索桥的活载挠度,分析了中央扣对活载挠度的影响,找到了活载挠度"W"形包络图和"V"形包络图差异的原因.
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| 关 键 词： | 悬索桥 中央扣 活载挠度 包络图 |
Detailed Calculation Method for Influence of Central Cable Band on Live Load Deflection of Suspension Bridge |
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| ZHENG Kai-feng,XU Run-dong,LI Huai-guang.Detailed Calculation Method for Influence of Central Cable Band on Live Load Deflection of Suspension Bridge[J].World Bridges,2009(2). |
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| Authors: | ZHENG Kai-feng XU Run-dong LI Huai-guang |
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| Affiliation: | ZHENG Kai-feng,XU Run-dong,LI Huai-guang(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | In the light of the phenomenon that the asymmetric loading deflection of long span suspension bridge is great and the maximum live load does not take place at the midspan of the bridge,the differences of envelope diagrams of the live load deflection due to installation of central cable band are compared.The cable at each side of a central cable band is respectively taken as the research object,and in accordance with the compatibility equations and by means of the virtual beam method calculated by the flexib... |
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| Keywords: | suspension bridge central cable band live load deflection envelope diagram |
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