采用槽形梁桥面的大跨度钢桁拱桥车桥动力分析

槽形梁道碴桥面是适用于钢桥的一种桥面新形式,为研究该种桥面的钢桥动力性能,以某大跨度钢桁拱桥为研究对象,将列车、桥梁视为联合动力体系,建立了列车与大跨度钢桁拱桥的车桥耦合动力分析模型.在建立桥梁的有限元分析模型时,对该桥所采用的槽形梁形式桥面选用了梁格法来建模.计算桥梁的自振特性；采用计算机模拟方法,计算了ICE高速列...

The train-bridge dynamic analysis of long-span steel trussed arch bridge which using channel beam as bridge deck

The channel beam bridge deck is a new kind of bridge deck for steel bridge.Taking a long-span steel trussed arch bridge as the research objective,this paper considered the train and bridge as a combined dynamic system,and established the train-bridge coupling dynamic analysis model of the train and long-span steel trussed arch bridge to study the dynamic performance of steel bridge with channel beam deck.In building the finite element analysis model of the bridge,the grillage method was used for the model of channel beam bridge deck.In this paper,the vibration characteristics were analyzed and calculated.Through computer simulation method,the spatial vibration responses when the ICE high-speed train passes by with different speed,were calculated.The lateral and vertical stiffness were also calculated to confirm whether they are both stiff enough.The running safety and comfort when the train passes by was analyzed on the basis of rational evaluation standard of running qualities of vehicle.The calculation results show that: the bridge has enough horizontal,vertical stiffness,the overall dynamic performance is good and the bridge has good train running property.The research in this paper is expected to provide helpful reference for the future designs.