| 悬索桥主缆成桥线形的迭代算法 |
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| 引用本文： | 潘韬,杨德灿. 悬索桥主缆成桥线形的迭代算法[J]. 交通科技, 2008, 0(5) |
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| 作者姓名： | 潘韬 杨德灿 |
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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. 武汉理工大学交通学院,武汉,430063 |
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| 摘 要： | 大跨度悬索桥主缆成桥线形是进行结构分析、计算和指导施工的关键控制因素,采用有限位移理论可较全面地考虑大位移引起的悬索桥几何非线性.利用通用有限元程序,建立全桥平面有限元模型,实现了悬索桥施工过程的模拟计算,并且使用悬索桥施工理想初态及成桥状态的迭代算法来确定主缆成桥线形.结果表明,悬索桥主缆的线形是介于抛物线与悬链线之间的索多边形.
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| 关 键 词： | 悬索桥 缆线形 几何非线性 迭代算法 |
Iteration Algorithm for Main Cable Shape of Suspension Bridge |
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| Pan Tao,Yang Decan. Iteration Algorithm for Main Cable Shape of Suspension Bridge[J]. Transportation Science & Technology, 2008, 0(5) |
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| Authors: | Pan Tao Yang Decan |
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| Affiliation: | Pan Tao1,Yang Decan2(1.State Key Laboratory for DisasterReduction in Civil Engineering,Tongji University,Shanghai 200092,China,2.School of Transportation,Wuhan University of Technology,Wuhan 430063,China) |
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| Abstract: | Main cable shape of long-span suspension bridges in completion state is the key controlling factor of structure design,calculation and guiding construction.Geometric non-linearity of suspension bridge caused by the large displacement can be considered fully by using finite displacement theory.The general FEM program was used to establish the whole bridge plan model with the stimulation analysis during the construction process.The iteration algorithm for the construction ideal initial state and completion st... |
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| Keywords: | suspension bridge main cable shape geometric non-linearity iteration algorithm |
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