HUUSKA/GULIEV公式挖槽式航道修正系数的连续回归模型

The Continuous Regression Model for Dredged Channel Correction Factor in the HUUSKA/GULIEV Formula

使用芬兰交通设施局模型计算HUUSKA/GULIEV公式挖槽式航道修正系数,可能导致HUUSKA/GULIEV公式下沉量计算误差较大。为解决该问题,提出构建HUUSKA/GULIEV公式挖槽式航道修正系数的连续回归模型,进行网格变换,将阻塞系数、挖槽水深和航道水深比值为坐标的非均匀网格变换为均匀网格。在均匀网格下进行一元回归分析,确定连续回归模型的基本形式。进行多元回归分析,根据显著性检验结果剔除线性相关性较弱的变量。对回归模型进行适用性检验,发现模型存在不适用性,需进行方差稳定化变换,变换后模型的不适用性得到修正,与芬兰交通设施局模型相比,该模型计算结果精度更高,其验证该模型的有效性;模型计算量小、易于工程应用。

The FTIA model is currently used to calculate the value of the dredged channel correction factor in the HUUSKA/GULIEV formula.It is likely to cause a significant error in the ship squat calculated by the formula.A continuous regression model of the dredged channel correction factor is set up.The non-uniform grid in the coordinate system of blockage factor-dredged channel depth/surround depth ratio is transformed into a uniform grid.The univariate regression analysis is performed on the uniform grid,and the basic form of the polynomial of the continuous regression model is obtained.Further,a multiple regression analysis is performed,omitting the variables with poor linear correlation based on the significance test result.Model adequacy checking indicates that the regression model is inadequate,and variance-stabilizing transformation is in need.After the transformation,the inadequacy is corrected.The effectiveness of the model is verified.The model has advantages of more accurate,low computational complexity,and easy engineering application.