桥梁风工程研究中的雷诺数效应研究进展

Research progress on the Reynolds number effect in bridge wind engineering

桥梁风工程研究中的雷诺数效应问题是伴随着风洞试验方法产生的一个基础性问题,随着桥梁尺寸的增大其雷诺数也逐渐增大,风洞试验雷诺数和实桥梁雷诺数的差别对试验结果的影响越来越受重视。该研究阐述了雷诺数效应问题的由来,回顾了雷诺数效应研究的发展历程,总结了针对圆形断面、矩形断面、主梁断面等不同桥梁结构断面雷诺数效应问题的研究进展,包括结构周围流场、气动力、风致振动随雷诺数的变化,指出了桥梁风工程雷诺数效应研究中尚待解决的问题,为今后该领域的研究提供参考和建议。

The Reynolds number effect in bridge wind engineering is a fundamental problem that comes accompanying the application of wind tunnel tests.The Reynolds number increases along with the development of bridge size.The effect of the difference between the wind tunnel Reynolds number and practical bridge Reynolds number has been paid more and more attention.In the paper,the origin of the Reynolds number effect was expounded.The research history of the Reynolds number effect was reviewed.The research development about the Reynolds number effect of bridge structure sections including circular section,rectangular section,main girder section etc.was summarized,including the changes of the flow pattern,aerodynamic force and wind-induced vibration with the change of the Reynolds number.Unsolved problems with regard to the Reynolds number effect in bridge wind engineering were pointed out.Some recommendations for future research were put forward.