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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(Bridge Analysis System)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。
Based on the wind-vehicle-bridge system spatial coupling analysis model and taking a long-span dual-purpose suspension bridge as an example, the self-developed bridge structure is adopted as an interactive and coordinating power system. The analysis software BANSYS (Bridge Analysis System) analyzes the dynamic responses of bridges and vehicles under wind loads and discusses the influence of wind speed, vehicle speed and rail transit arrangement. At the same time, based on the reasonable evaluation of train operation safety and comfort , The safety and comfort of the train when it passes the bridge are analyzed, and the anti-wind driving guidelines of the suspension bridge are obtained: when the wind speed is less than 20m / s, the speed can reach 80km / h; when the wind speed is between 20m / s and 25m / s between the speed can not be greater than 60km / h; when the wind speed is greater than 25m / s, should be closed to rail traffic.