190m以下箱形驳总纵强度规范研究

Rule requirement on hull strength for pontoon barge with length less than 190m

针对目前超尺度箱形驳需要通过直接计算进行总强度校核的要求,采用有限元方法,基于船体梁理论,通过研究不同舱壁设置时,甲板和船底参与总纵强度的有效性,提出了保证超尺度箱形驳按规范进行设计的总强度附加要求,即对不同尺度比的箱形驳设置最低数量的水密舱壁来保证超尺度箱形驳的总强度,从而避免进行复杂的全船直接计算。

The hull girder strength should be calculated by direct method for exceeded scale pontoon barge. Based on hull girder theory, the effectives of deck and bottom to hull longitudinal strength with different watertight bulkhead arrangement are assurance of hull strength studied. Appendix requirements are proposed for exceeded scale pontoon barges to the under present rule design. For different scale ratio pontoon barges, the least watertight bulkheads should be arranged, and the complicated direct calculations can be avoided for hull structures.