南水北调与水利科技2012，Vol.10Issue(1)：136-138,3.DOI:10.3724/SP.J.1201.2012.01136
三次抛物线形渠道断面收缩水深的简化计算公式
Simplified Formula for Calculating Contracted Water Depth of Channel with Cubical-Parabola Cross Section
谢成玉 1滕凯2
作者信息
- 1. 黑龙江省水利工程建设监理公司,哈尔滨150000
- 2. 齐齐哈尔市水务局,黑龙江齐齐哈尔161006
- 折叠
摘要
Abstract
The current formula to calculate the contracted water depth of the channels with the cubical-parabola cross section is complex. This paper introduces the optimal fitting method to deform the basic equation for calculating the contracted water depth. The new method is based on the objective function of the minimum residual standard deviation, and it uses the successive approximation approach to generate an approximate formula to calculate the contracted water depth of the channels with the cubical-parabola cross section,which has a simplified form of expression and is easy to remember, quick for calculation, and convenient for the engineering staff. Compared the results from the new method with those from the original equation, the maximum error of the calculated contracted water depth is about 0. 46 %, which suggests that the new method is applicable for the practical engineering calculations.关键词
三次抛物线形渠道/收缩水深/优化拟合/近似计算Key words
cubical-parabola channels/contracted water depth/optimal fitting/approximation分类
建筑与水利引用本文复制引用
谢成玉,滕凯..三次抛物线形渠道断面收缩水深的简化计算公式[J].南水北调与水利科技,2012,10(1):136-138,3.
