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工程力学  2012 

大跨度公轨两用悬索桥风-车-桥耦合振动及抗风行车准则研究

DOI: 10.6052/j.issn.1000-4750.2011.03.0158, PP. 114-120

Keywords: 风-车-桥系统,耦合振动,抗风行车准则,风荷载,悬索桥

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Abstract:

将风、车、桥三者作为一个交互作用、协调工作的耦合动力系统,基于风-车-桥系统空间耦合分析模型,以一大跨度公轨两用悬索桥为例,采用自主研发的桥梁结构分析软件BANSYS(BridgeAnalysisSystem)分析了风荷载作用下桥梁和车辆的动力响应,讨论了风速、车速及轨道交通布置方式等因素的影响;同时,基于合理的列车运行安全性和舒适性评价指标,对列车通过该桥时的走行安全性与舒适性进行了分析,得出了该悬索桥的抗风行车准则:当风速小于20m/s时,车速可达设计车速80km/h;当风速介于20m/s和25m/s之间时,车速不能大于60km/h;当风速大于25m/s时,应封闭轨道交通。

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