摘要
在较大的雷诺数范围内测量了不同宽高比箱形桥梁断面的三分力系数 ,研究了三分力系数雷诺数效应以及宽高比对断面三分力系数雷诺数效应的影响。流线型桥梁断面的阻力系数、升力系数都有明显的雷诺数效应。宽高比对断面的三分力系数雷诺数效应有明显的影响。
The drag, lift and moment of box beam deck sections with different ratios of width to height (B/H) in TJ-2 wind tunnel are measured in this paper. The Reynolds number effect of the mean aerodynamic force coefficient and the influence of ratio of bridge deck width to its height on three mean coefficients are studied. The results show that: (1) The mean drag and lift coefficients of box shape bridge deck section have considerable Reynolds number effect; (2) the ratio of width to height(B/H) affects on Reynolds number effect of the mean aerodynamic force coefficient obviously. The result given by low Reynolds number wind tunnel test is conservative.
出处
《公路》
北大核心
2004年第9期43-47,共5页
Highway
基金
国家自然科学基金重大项目资助 (编号 :5 9895 410 )
