| 大跨度公路、轨道交通两用桥列车走行性及合理刚度探讨 |
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| 引用本文： | 郑种,吴定俊.大跨度公路、轨道交通两用桥列车走行性及合理刚度探讨[J].城市轨道交通研究,2008,11(2):22-26. |
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| 作者姓名： | 郑种 吴定俊 |
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| 作者单位： | 同济大学桥梁工程系,200092,上海;同济大学桥梁工程系,200092,上海 |
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| 摘 要： | 采用空间杆系有限元方法,建立了某长江大桥的车振动力分析模型.用通用软件ANSYS及车桥耦合振动分析程序VBC计算了该桥的空间自振特性.两者计算结果较为一致.建立了桥梁、列车、汽车动力分析模型,借助VBC对其在不同车速、不同荷载工况下的车桥耦合振动进行了计算和分析.通过理论分析和程序试算,对该长江大桥的合理刚度进行了初步的探讨.
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| 关 键 词： | 长江大桥 车桥耦合振动 合理刚度 |
| 收稿时间： | 2007-08-20 |
| 修稿时间： | 2007年8月20日 |
On Train Runability and Appropriate Rigidity of Long Span Dual-purpose Bridge |
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| Zheng Chong,Wu Dingjun.On Train Runability and Appropriate Rigidity of Long Span Dual-purpose Bridge[J].Urban Mass Transit,2008,11(2):22-26. |
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| Authors: | Zheng Chong Wu Dingjun |
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| Abstract: | With the finite dement method, the train-bridge coupling vibration analysis model of a Yangtze R. bridge is built. Firstly, the natural vibration properties of the bridge are respectively analyzed with the general software ANSYS and VBC program for train-bridge coupling vibration, both results are quite identical. Secondly, the coupling vibration analysis model which consists of bridge, train and vehide is calculated by VBC in various load cases sorted by train speed or loading mode. At last, a study on appropriate stiffness of this Yangtze R. bridge is performed through theoretical analysis and program calculation. |
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| Keywords: | Yangtze River bridge train-bridge coupling vibration appropriate rigidity |
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