Wind tunnel tests for aerodynamic admittances of trains on a steel truss bridge under crosswind
MA Cun-ming1,2,DUAN Qing-song1,2,LIAO Hai-li1,2
1. Department of Bridge Engineering, Southwest Jiaotong University,Chengdu 610031,China;
2. Research Centre of Wind Engineering,Southwest Jiaotong University,Chengdu 610031,China
Abstract:The flow field around trains passing through bridges may be largely affected by long-span steel truss bridges which are sensitive to wind, it is necessary to analyze aerodynamic forces on trains under crosswind considering influences of steel truss bridges. Taking a long span steel truss suspension bridge as an example, two atmospheric turbulence fields were established in a wind tunnel lab. Then, the immobile aerodynamic forces on a train were analyzed with the pressure measurement method. The equivalent aerodynamic admittances and the cross correlation of buffeting foeces in frequency domain were obtained. The influences of wind attack angle, turbulent flow field and location of train were considered and the further study direction was pointed out. This study provided a reference for studying the comfort of trains passing through similar bridges.
马存明1,2,段青松1,2,廖海黎1,2. 横风作用下钢桁梁桥上列车气动导纳的风洞试验研究[J]. 振动与冲击, 2018, 37(2): 150-155.
MA Cun-ming1,2,DUAN Qing-song1,2,LIAO Hai-li1,2. Wind tunnel tests for aerodynamic admittances of trains on a steel truss bridge under crosswind. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(2): 150-155.
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