欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为比较分离双箱涡振性能在高低雷诺数试验中的异同，在同济大学TJ-1和TJ-3风洞试验室进行了40个工况的对比试验．结果表明，在低雷诺数试验中涡振出现的阻尼比区间及其相应的振幅都较大，在高雷诺数试验中涡振出现的阻尼比区间和幅值都较小；导流板在零度攻角时无论雷诺数高低都能减小涡振振幅，但在攻角存在时，导流板仅在低雷诺数试验条件下能够增大涡振振幅而在高雷诺数试验条件下则会减小涡振振幅．最后还对试验现象差异的机制进行了分析，并对与大带东桥和昂船洲桥研究结果异同的原因进行了分析．
英文摘要：
In order to compare the performance of the vortex induced vibrations （VIV） of twin-box bridge sections in different Reynolds numbers, two groups of experiments with 40 cases were carried out in TJ-1 and TJ-3 wind tunnel. The results show that VIV occurs in a more widely range of damping ratios with rather larger amplitudes in the low Reynolds number experiments. While in the high Reynolds number experiments, VIV only occurs in a much closer range of damping ratios with the amplitude being smaller. As for the guide vanes, they do decrease the amplitude of VIV in the attack angle of zero no matter the Reynolds number is high or low. However, when the attack angle exists, they only can decrease the amplitudes in the high Reynolds number experiments while the amplitudes of VIV will be increased a lot in the low Reynolds number experiments. Comparisons are also done with the experiments of the Great Belt East Bridge and the Stonecutters Bridge. The mechanisms of the experiments are detailed hereafter together with the reasons of comparisons＇ divergence and agreement.
同期刊论文项目
同项目期刊论文
A new approach of selecting real input ground motions for seismic desing: the most unfavourable real
Effects of hanging wall and forward directivity in the 1999 Chi-Chi earthquake on inelastic displace
Comparison of perfectly matched layer and multi-transmitting formula artificial boundary condition b
Flow field mechanism of wind induced vibration response of large span bridge influenced by guide van
Comparison and analysis of vortex induced vibration for twin-box bridge sections based on experiment
Experiments on vortex induced vibration of twin-box bridge sections in high and low Reynolds numbers
期刊信息
位置：