Establishment of Method to Assess Longitudinal Strength of Ship's Hull Girder

为了建立弯曲、扭转和剪切联合作用下船体梁纵向极限强度的总体评估体系，(1)建立了高效准确的船体梁在联合荷载作用下的逐级倒塌分析方法，(2)巨浪作用下船舶极端波浪荷载分析方法，(3)基于结构可靠度分析的船体梁结构安全评估方法。进行了1/13比例尺集装箱船模型在弯曲和扭转联合作用下的倒塌试验，研究了其渐进破坏行为和极限强度相互作用关系。

In order to establish a total system to assess ultimate longitudinal strength of ship's hull girder under combined bending, torsion and shear, (1) efficient and accurate method of progressive collapse analysis of ship's hull girder under combined loads, (2) method of analysis of extreme wave loads on ships in rough seas, and (3) method of structural safety assessment of ship's hull girder based on structural reliability analysis were developed. Collapse tests of 1/13-scale container ship models under combined bending and torsion were carried out and their progressive collapse behavior and ultimate strength interaction relatioship were investigated.