Modification process for arc-shaped web plates of saddles in liquefied gas carrier with type C liquid tank

The invention provides a modification process for arc-shaped web plates of saddles in a liquefied gas carrier with a type C liquid tank. The modification process comprises the steps of performing point-selection analysis of the liquid tank and a hull structure through a total station, obtaining a virtual radius of the liquid tank, obtaining modification allowance values of the web plates through subtraction, finally removing the part corresponding to the allowance values to obtain final linear shapes of the web plates, and completing the modification. The modification process for the arc-shaped web plates of the saddles in the liquefied gas carrier with the type C liquid tank has the advantages of allowing data to be more visual and accurate, facilitating the operation, greatly improving the working environment of narrow spaces in hull cabins, saving a large number of materials and time cost for shipyards and improving the level of shipbuilding. 本发明提供种带有C型液罐的液化气船中弧形鞍座腹板修正工艺，通过全站仪对液罐和船体结构进行取点分析，得出虚拟液罐半径，通过做差的方