基于理想流的群围堰绕流解析理论

重庆交通大学学报（自然科学版） ›› 2007, Vol. 26 ›› Issue (3): 133-135.

基于理想流的群围堰绕流解析理论

郝艳广，肖盛燮，周菊芳，范海军

重庆交通大学防灾减灾研究所，重庆 400074

收稿日期:2006-03-03 修回日期:2006-04-19 出版日期:2007-06-15 发布日期:2015-05-18
作者简介:郝艳广(1982—)，男，河北邢台人，硕士生，从事防灾减灾研究.
基金资助:
国家科技攻关计划“西部开发科技行动”重大项目(2004BA901A02)资助

Circumfluence Analytic Theory of Coferdam Based on Ideal Flow

HAO Yan-guang，XIAO Sheng-xie，ZHOU Ju-fang，FAN Hai-jun

Institute of Disaster Prevention&Reduction，Chongqing Jiaotong University，Chongqing 400074，China

Received:2006-03-03 Revised:2006-04-19 Online:2007-06-15 Published:2015-05-18

摘要/Abstract

摘要： 运用复变函数理论研究了理想液体平面势流的多圆柱绕流，导出了多圆柱绕流的解析解，并对其特殊解进行分析，得出当L／a>3时多圆柱间相互干扰消失；为防止围堰发生过大冲刷，应在距围堰0．75a范围内防护；防止发生的围堰绕流对行船产生影响，避免轮船对围堰的撞击影响施工进度和质量，应在上游距桥址>0．5L处设置防撞栏；避免绕流流线变化过大，桥轴线方向与水流流速方向夹角一般应控制在 ≤5。．

关键词: 钢围堰群, 绕流模型, 复变函数, 水流结构

Abstract: The circumfluence around columns of plane potential flow was studied based on the theory of functions of a complex variable，and the analytic solution was educed and analyzed．When L/a>3，the muttual interference disappears between cofferdams．In order to prevent cofferdam from heavy scouring，the cofferdam shelter should be placed 0.75 a away from cofferdam.For preventing sailing ship from colliding the cofferdam under the effects of coferdam circling flow。the guard fence around the cofferdam should be installed at 0.5L from upper reaches．For reducing the movement of circumfluence．the ≤5between ge and current axes is advised．

Key words: steel cofferdams, flow past body model, complex function, curent structure

中图分类号:

郝艳广，肖盛燮，周菊芳，范海军. 基于理想流的群围堰绕流解析理论[J]. 重庆交通大学学报（自然科学版）, 2007, 26(3): 133-135.

HAO Yan-guang，XIAO Sheng-xie，ZHOU Ju-fang，FAN Hai-jun. Circumfluence Analytic Theory of Coferdam Based on Ideal Flow[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(3): 133-135.