摘要
针对标准U形过水断面渠槽临界水深计算公式分段、表达形式复杂等问题,依据优化拟合理论,取标准剩余差最小为目标函数,在工程适用参数范围内,通过最优化拟合替代,获得一个形式简单直观、便于实际应用的近似计算公式。算例计算表明该公式的计算精度满足设计要求,具有一定的实用价值。
The dalculation of critical depth of the open channel with a standard U-shaped cross-section is difficult because of its comphcated formula. In order to solve this problem, a simplified formula of the critical depth was derived by using the optimized fitting method and taking minimal standard residual difference as an objective function. The simplified formula meets the engineering requirement, and its calculation has the advantages of simple, fast, and high accuracy.
出处
《水利水电科技进展》
CSCD
北大核心
2013年第4期46-48,共3页
Advances in Science and Technology of Water Resources
关键词
U形过水断面
临界水深
优化拟合
近似计算
U-shaped cross-section
critical depth
optimized fitting
approximate calculation
