张伟伟, 豆子皓, 李新涛, 高传强. 桥梁若干流致振动与卡门涡街[J]. 空气动力学学报, 2020, 38(3): 405-412. DOI: 10.7638/kqdlxxb-2020.0088
引用本文: 张伟伟, 豆子皓, 李新涛, 高传强. 桥梁若干流致振动与卡门涡街[J]. 空气动力学学报, 2020, 38(3): 405-412. DOI: 10.7638/kqdlxxb-2020.0088
ZHANG Weiwei, DOU Zihao, LI Xitao, GAO Chuanqiang. Various flow-induced vibrations of bridges and von Kármán vortex street[J]. ACTA AERODYNAMICA SINICA, 2020, 38(3): 405-412. DOI: 10.7638/kqdlxxb-2020.0088
Citation: ZHANG Weiwei, DOU Zihao, LI Xitao, GAO Chuanqiang. Various flow-induced vibrations of bridges and von Kármán vortex street[J]. ACTA AERODYNAMICA SINICA, 2020, 38(3): 405-412. DOI: 10.7638/kqdlxxb-2020.0088

桥梁若干流致振动与卡门涡街

Various flow-induced vibrations of bridges and von Kármán vortex street

  • 摘要: 首先介绍了与桥梁流致振动相关的卡门涡街、涡致振动和颤振的概念。在此基础上,讲述历史上塔科马大桥风毁事件的研究争论,并再次澄清塔科马大桥风毁的直接原因是颤振而不是涡激共振。对虎门大桥振动问题,针对风工程领域中涡致振动问题的性质进行了讨论,指出限幅涡振问题,并伴随的锁频现象,本质上仍是结构自激振动问题,卡门涡街起到的是诱发而不是直接的推动作用。最后,对形形色色流致振动问题的差异和共性进行了讨论。

     

    Abstract: Firstly, the concepts of von Kármán vortex street, vortex-induced vibration(VIV) and flutter associated with flow-induced vibrations of bridges were introduced. On this basis, the historical research controversies of the Tacoma Narrows Bridge was described. And it was clarified that the aerodynamic failure mechanism responsible for the collapse of the Tacoma was flutter rather than VIV. The vibration of Humen Bridge and the aerodynamic mechanism of the VIV in the field of wind engineering were discussed. The mechanisms of the amplitude-limited VIV and lock-in were essentially structural self-excited vibration, and von Kármán vortex street worked as an inducement rather than a direct push. Finally, the differences and commonalities of various flow-induced vibration problems were discussed.

     

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