用于舱容计量修正的液货船结构变形曲线快速计算方法

Rapid Calculation Method of the Liquid Tank Structure Deformation Curve Used to Volume Measurement Correction

对货舱满载时货舱区域结构变形曲线的形状和数值大小以及对舱容体积的影响程度等的快速计算进行分析研究,提出采用可操作、易测度的变形测度指标——拱垂度来联系货舱区域结构变形曲线的处理方法,探索建立货物载荷—拱垂度—货舱区域结构变形曲线—货舱舱容体积修正的关联,进而求得同型船满载状态拱垂度、载荷大小、结构变形间的关系及规律。以某油船为例进行计算研究。结果表明:在满载状态下,船体舱段载荷对舱段拱垂值、最大变形值是有影响的,并且这种影响是有规律的;而船体载荷与船体结构变形最大值、拱垂值之间的关系是线性的。

The rapid calculation method of the influence of the structural deformation upon the capacity of the cargo hold was investigated, and the hogging and sagging value, which can be measured easily was adopted to connect the structural deformation curve of cargo hold,and to establish the relationship among cargo load, hogging and sagging value, deformation curve in the cargo hold volume correction. A numerical example of an oil tank was given, which showed that there are some regular influences of loadings upon hogging and sagging value and the max structural deformation in the full loaded condition,the relationship between the loading and maximum structural deformation and hogging and sagging value is linear.