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A linear theory of vortex-induced vibration of long span continuous steel box girder bridge with variable cross-section
Author(s): 
Pages: 966-971
Year: Issue:  6
Journal: Journal of Vibration Engineering

Keyword:  vortex-induced vibration (VIV)linear theoryvariable cross-sectionpartial correlationwind tunnel testing;
Abstract: 涡激力沿主梁跨向具有偏相关性,基于Scanlan涡激力经验线性模型,假定涡激振动风速下,整个梁段涡脱频率锁定,提出适用于变截面连续梁桥的三维涡激力经验线性模型,从而建立节段模型与变截面梁实桥之间涡激振动幅值之间的关系.通过变截面梁几个典型位置截面的节段模型风洞试验,获得描述整个变截面主梁三维涡激力经验线性模型等效参数,实现对整个变截面连续梁桥涡激振动响应的评估.通过某典型的三跨变截面连续钢箱梁桥涡激振动风洞试验,验证理论的有效性.
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