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Wind tunnel test on aerodynamic effect of wind barriers on train-bridge system 被引量:17

Wind tunnel test on aerodynamic effect of wind barriers on train-bridge system
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摘要 To investigate the aerodynamic effect of wind barriers on a high-speed train-bridge system,a sectional model test was conducted in a closed-circuit-type wind tunnel.Several different cases,including with and without barriers,with different barrier heights and porosity rates,and with different train arrangements on the bridge were taken into consideration;in addition,the aerodynamic coefficients of the train-bridge system were measured.It is found that the side force and rolling moment coefficients of the vehicle are efficiently reduced by a single-side wind barrier,but for the bridge deck these values are increased.The height and porosity rate of the barrier are two important factors that influence the windbreak effect.Train arrangement on the bridge will considerably influence the aerodynamic properties of the train-bridge system.The side force and rolling moment coefficients of the vehicle at the windward side are larger than at the leeward side.
出处 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2015年第2期219-225,共7页 中国科学(技术科学英文版)
基金 supported by the National Basic Research Program of China("973"Project)(Grant No.2013CB036203) the National Natural Science Foundation of China(Grant No.51308034) the"111"Project(Grant No.B13002)
关键词 wind barrier train-bridge system wind tunnel aerodynamic coefficient windbreak effect 车桥系统 风洞试验 气动效应 风障 空气动力效应 空气动力系数 空气动力特性 势垒高度
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