摘要
城门洞形断面隧洞是输水工程中较常采用的一种形式,但其正常水深方程是超越方程,数学上无解析解。目前采用的图解、试算等方法存在着计算过程繁琐且计算精度差的缺陷。应用拟合法提出了近似计算公式,其形式简捷、结论准确。在工程常用范围内(0<h/r≤1.8)最大误差<0.2%。
The normal depth equation for arch cross-section tunnel is a transcendental equation and no analytical solution. Chart look-up methods and trial-and-error methods are currently used to compute the normal depth, but these methods are slow and complex. This paper presents an approximate formula by using fitting methods. This method is simpler and accurate. It ＇s maximum relative error are less than 0. 2 % in the utility range O〈h/r≤1. 8.
出处
《给水排水》
CSCD
北大核心
2007年第7期19-21,共3页
Water & Wastewater Engineering
关键词
正常水深
近似算法
城门洞形隧洞
Normal depth
Approximate solution
Arch cross-section tunnel
作者简介
通讯处：525000广东省茂名市官渡二路139号茂名学院建筑工程系 电话：13926712620 E-mail：wenhui-mmc@163．com
