江海通航散货船波浪载荷研究

Investigation on the Wave Loads of River-Sea Bulk Carriers

采用ISSC二参数波浪谱和E1海区的波浪散布图对江海通航散货船的波浪载荷进行了长期预报,并与CCS海船规范和IACS散货船共同规范(CSR)中的设计波浪载荷进行了比较分析,拟合出了应用于江海通航船舶有限元分析的等效设计波高公式.研究表明:江海通航散货船的波浪载荷中垂向弯矩较无限航区海船规范值可降低20%～25%,波浪垂向剪力比《内河航行海船建造海规》规范值增大4%～8%,非常接近CSR规范值,水平波浪转矩比CSR规范值小18%～30%,波浪转矩比CSR规范值则要降低27%～33%.

The long-term prediction of the wave loads of the river-sea bulk carriers was carried out using ISSC two-parameter wave spectrum and wave scattering diagram of E1 sea areas,and compared with the design wave loads in CCS Rule for sea-going domestic ships and IACS Common Structure Rule（CSR） for bulk carriers.The formula regarding the height of the equivalent design wave,which will be applied to the finite element analysis of the river-sea ship,were fitted.The investigation showed that the vertical wave bending moment was 20%~25% less than that specified in the Rule for the sea-going ships at the unrestricted area,the vertical wave shear force was 4%~8% greater than that in the Rule and nearly equal to that in CSR,the horizontal bending moment was 18%~30% less than that in CSR,and the wave torsion moment was 27%~33% less than that in CSR as well.