Calculation of Stream Drag of the Flatbridge's Surface during the Flood

Journal of Chongqing Jiaotong University(Natural Science) ›› 1996, Vol. 15 ›› Issue (3): 1-4,10.

Calculation of Stream Drag of the Flatbridge's Surface during the Flood

Yang Bin¹, Zheng Yingong¹, Wu Wu¹, Xiao Shengxie²

1. Institute of High-head Navignhon Structure;
2. Departement of Bridge & Structure Engineering

Received:1998-03-29 Online:1996-06-24 Published:2016-11-10

洪水期间板桥桥面水流阻力的计算

杨斌¹, 郑银功¹, 吴珷¹, 肖盛燮²

1. 重庆交通学院高坝通航研究所, 630074;
2. 重庆交通学院桥梁结构工程系, 630074

作者简介:杨斌,男,32岁,工程师。
基金资助:
国家自然科学基金

Abstract

Abstract: In this paper, calculation equation of stream drag of the flat bridge's surface during the flood is derived by friction drag calcularion equation of plane wall flow and shape drag calculation method of 2-dimensions rectangle cylinder, ran don characteristic and numeral stativstics feature of stream drag are discussed, and instantaneous maxium value of strearn drag of the flat bridge's surface is got.

Key words: the flatbridge's surface, stream drag, fluctuanty, normal distribution

摘要： 笔者利用平面壁流的摩擦阻力计算公式及二维矩形柱体形状阻力(亦称压差阻力)的计算方法导出了洪水期间板桥桥面水流阻力的计算公式;讨论了水流阻力脉动的随机特性及其数字统计特征:得到了洪水期间板桥桥面水流阻力的瞬时最大值.

关键词: 板桥桥面, 水流阻力, 脉动, 正态分布

Yang Bin, Zheng Yingong, Wu Wu, Xiao Shengxie. Calculation of Stream Drag of the Flatbridge's Surface during the Flood[J]. Journal of Chongqing Jiaotong University(Natural Science), 1996, 15(3): 1-4,10.

杨斌, 郑银功, 吴珷, 肖盛燮. 洪水期间板桥桥面水流阻力的计算[J]. 重庆交通大学学报（自然科学版）, 1996, 15(3): 1-4,10.

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