Different from the rail train-bridge system,the permanent conducting maglev train enclose the track on the bridges.And the air passage between the bottom of the trains and the bridge is very narrow.As a result,new characteristics of the flow and the aerodynamic forces of the maglev train-bridge system may exist.The track enclosed permanent conducting high speed maglev train and simply supported box girder bridge were taken as the research object in this paper,the numerical analysis model under crosswind was established.The Reynolds number effects of the system was discussed,and the suitable simulation wind speed was determined.On this basis,the crosswind aerodynamic characteristics of the maglev train box girder combination system under crosswind were analyzed,providing reference for the wind resistant operation safety of maglev transportation.The results show that the aerodynamic characteristics of the maglev train box girder combination system are closely related to the Reynolds number.The aerodynamic performance of the train and box girder is greatly affected by the combination,and the effect of line spacing on the aerodynamic performance of the system is not significant.Increasing the beam height will slightly increase the aerodynamic force of the system.
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