三体船分段模型波浪载荷试验研究

摘要

三体船的主体与连接桥结构的波浪载荷特性是船舶结构设计者非常关注的问题,目前对于这些载荷特性进行较为全面的模型试验研究在国内很少.该文在拖曳水池和方形水池开展了某三体船的分段模型试验,详细介绍了分段模型的设计原则,对于纵向载荷和横向载荷的测量采用不同的分段布置形式.通过对试验数据的分析及与理论计算的对比,对三体船横摇运动非线性修正方法加以改进,同时研究了该三体船的船舯横剖面和连接桥纵剖面的波浪载荷特征,得出了一些结论,为船舶结构设计提供了确定设计载荷的依据.%The wave loads characteristic of trimaran's main hull and cross structure is a great concern to ship structure designers,but comprehensive model tests are researched little in China currently.In this work,a trimaran's segmented model test was carried out in a towing tank and a square tank,the design principle of segmented model was introduced in detail,and different segmented models were designed for measuring longitudinal loads and transverse loads.According to analysis of the experimental values and comparison with the results of theoretical calculation,the nonlinear method of roll motion prediction was improved,and the wave loads characteristics of midship transverse section and cross structure longisection were reserached.Finally,some conclusions were obtained,which can be the basis for the design loads of this trimaran to ship structure designers.