中文摘要：

基于AllanLarsen广义单自由度涡激振动模型，借鉴Wilkinson沿跨向涡激力相关性函数试验结果，建立大跨度桥梁主梁沿跨向涡激振动描述体系，并探讨节段模型试验识别气动参数方法。以一座大跨斜拉桥为例，在考虑了振型、涡激力相关性和阻尼作用后，根据主梁节段模型风洞试验识别气动参数，并计算其沿跨向竖向涡振响应。

英文摘要：

A mathematical system is set up to describe spanwise Vortex-Induced Vibration（VIV） of long span bridge girder. The system is based on a general VIV model proposed by Allan Larsen and Vortex-shedding force correlation function tested by Wilkinson. Moreover, the method is discussed to identify aerodynamic parameters of general VIV model from section mode test. Last, taking a long span cablestayed bridge as an example, the spanwise vertical VIV response of girder is calculated by taking account of effect of mode shape, vortex-shedding force and damping ratio.