摘要
针对目前求解梯形断面收缩水深存在的计算繁琐、精度不高、适用范围小等问题,通过引入无量纲水面宽度,在对梯形断面收缩水深计算公式变形整理的基础上,经对式中复杂隐函数方程的优化拟合,获得了表达形式简单、计算简捷、求解成果精度高(最大拟合误差仅为0.42%)、适用范围广的简化计算公式。
To solve the issues of the calculation cumbersome and the accuracy not high,used in a small range of the existing contracted depth of trapezoidal cross-section,the dimensionless water surface width was introduced. Based on the organization of the formula of trapezoidal cross-section contraction depth deformation, finishing on the type optimization of complex implicit function equation fitting, it obtains a simplified formulas with simple expression,calculate, high prcision solution.（maximum fitting error of only 0.42%）, a wide of applicable range.
出处
《吉林水利》
2012年第7期50-52,共3页
Jilin Water Resources
关键词
梯形断面
收缩水深
优化拟合
简化计算
Trapezoidal cross-section
contracted water depth
optimized fit
simplified calculation
