| 扁平箱形桥梁断面静气动力系数雷诺数效应研究 |
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| 引用本文： | 李加武,林志兴,项海帆.扁平箱形桥梁断面静气动力系数雷诺数效应研究[J].公路,2004(9):43-47. |
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| 作者姓名： | 李加武 林志兴 项海帆 |
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| 作者单位： | 同济大学,上海市,200092;同济大学,上海市,200092;同济大学,上海市,200092 |
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| 基金项目： | 国家自然科学基金重大项目资助 (编号 :5 9895 410 ) |
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| 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。低雷诺数风洞试验得到的三分力系数用于实桥分析时偏于保守。
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| 关 键 词： | 三分力系数 雷诺数效应 宽高比 风洞实验 |
| 文章编号： | 0451-0712(2004)09-0043-04 |
A Study on Reynolds Number Effect of Mean Aerodynamic Force Coefficient of Box-Beam Bridge Deck Sections |
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| LI Jia-wu,LIN Zhi-xing,XIANG Hai-fan.A Study on Reynolds Number Effect of Mean Aerodynamic Force Coefficient of Box-Beam Bridge Deck Sections[J].Highway,2004(9):43-47. |
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| Authors: | LI Jia-wu LIN Zhi-xing XIANG Hai-fan |
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| Abstract: | 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. |
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| Keywords: | mean aerodynamic fore coefficient Reynolds number effect ratio of width to height wind tunnel test |
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