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《工程(英文)》 >> 2017年 第3卷 第6期 doi: 10.1016/j.eng.2017.09.001

斜拉索表面处理后的气动性能的风洞实验研究

a Yokohama National University, Yokohama 240-8501, Japan
b Shinko Wire Company, Ltd., Amagasaki 660-0091, Japan

发布日期: 2017-12-30

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摘要

学界对包括风雨激振(RWIV)和干索驰振(DG)在内的斜拉桥拉索的风致振动等的研究已经有相当长的时间。一般来说,我们会应用机械阻尼器或表面处理来抑制振动。特别是已开发出几种表面处理拉索,包括压痕、纵向平行突起、螺旋角和U 形开槽。最近又开发了一种带螺旋突起的新型空气动力学稳定拉索,这种拉索已被证明具有与锯齿状拉索相似的低阻力系数,并且可以防止拉索表面形成水线。在本研究中,应用风洞实验对这种拉索在各种来流角度和突起尺寸下的RWIV稳定性进行了研究。发现对于所有测试风角,螺旋突起拉索对于RWIV 和DG 在空气动力学基础上都能保持稳定,突起尺寸的影响也得到了确认。

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