摘 要: 本文研究了中央开口断面悬索桥涡振及其控制风洞试验。考虑了模型涡振幅值和和实桥涡振幅值之间换算的修正系数，风洞试验表明中央开口是导致该种断面形式涡激振动发生的主要原因。所设计的两种制涡方案都能达到控制涡振的目的，在不改变断面形式等因素的前提下，本文设计的制涡方案二能有效控制涡振，符合工程实际要求。同时试验也表明，阻尼能大幅降低涡振幅值。

Abstract: Vortex induced vibrations(VIV) and the controlling measure of Central-slotted Box Section for Suspension Bridges have been studyed by wind tunnel experiments in this paper, The conversion relationships between the resonant amplitudes of the sectional model and the prototype bridge are considered, and the correction coefficients of mode shape are also presented. Both of the two controlling VIV methods designed in this paper may control the VIV successful. The second method is able to control the VIV effectively which have been presented in this paper on condition that do not alter the the section shape，and the second method also correspond to actual engineering practice needs. The research has alsio shown that it is effective to restrain the amplituds of VIV by increasing the damping ratio.