| 影响大跨径悬索桥颤振的非线性因素研究 |
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| 引用本文： | 张新军,陈艾荣,项海帆. 影响大跨径悬索桥颤振的非线性因素研究[J]. 土木工程学报, 2003, 36(4): 76-81 |
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| 作者姓名： | 张新军 陈艾荣 项海帆 |
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| 作者单位： | 1. 浙江工业大学
2. 同济大学 |
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| 基金项目： | 国家自然科学基金重大项目资助 (5989541 0 ) |
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| 摘 要： | 随着桥梁跨径的增大 ,各种非线性因素对大跨径悬索桥颤振特性的影响将不容忽视。在线性颤振分析方法的基础上 ,考虑风速的空间非均匀分布、结构以及作用于结构上的气动力随结构变形的非线性变化影响因素 ,建立了大跨径桥梁的三维非线性颤振分析方法。以某悬索桥为例 ,进行了考虑风速空间非均匀分布、结构动力特性以及气动力随结构变形的非线性变化等因素的颤振分析 ,揭示了各种非线性因素对大跨径悬索桥颤振影响的机理和规律
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| 关 键 词： | 大跨径悬索桥 颤振 非线性 |
| 文章编号： | 1000-131X(2003)04-0076-06 |
| 修稿时间： | 2001-06-02 |
STUDY FOR NONLINEAR EFFECTS OF FLUTIER ON LONG-SPAN SUSPENSION BRIDGES |
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| Zhang Xinjun. STUDY FOR NONLINEAR EFFECTS OF FLUTIER ON LONG-SPAN SUSPENSION BRIDGES[J]. China Civil Engineering Journal, 2003, 36(4): 76-81 |
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| Authors: | Zhang Xinjun |
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| Affiliation: | Zhang Xinjun (Zhejiang University of Technology) Chen Airong Xiang Haifan (Tongji University) |
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| Abstract: | The nonlinear effects of flutter on long-span suspension bridges are studied in the paper. With the increasing of span, the nonlinear effects of flutter on long-span suspension bridges can not be neglected. Based on linear analysis, a 3-D nonlinear flutter analysis is proposed. The nonlinear effects of flutter include many factors. The nonuniform distribution of wind velocity is one of that has to be considered. A long-span suspension bridge is taken as an example, some analyses are carried out. The mechanisms and roles for nonlinear effects of flutter are then declared. |
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| Keywords: | long-span suspension bridge flutter nonlinear |
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