滚装船在拖轮辅助下丁靠斜坡道的船舶系泊试验研究

Experimental study on mooring test of roll-on/roll-off ship using tugboat assistance on a sloping ramp

文章以某码头工程为例,针对1万t滚装船在拖轮辅助下丁靠斜坡道开展船舶系泊物理模型试验,分别对风、浪、流不同组合工况下的缆绳系缆力、船舶运动量等进行了试验研究,给出了作业及系泊条件,可为设计和运营提供参考。结果表明设计方案缆绳布置方式总体较为合理,使用拖轮辅助可以有效地平衡风、浪、流对滚装船的作用力,各组缆绳缆力未超过50%破断力的设计标准;对于系泊系统中各特征量,动力因素的影响次序自大至小依次为:波浪、风和水流,其中波浪周期在影响因素中最为显著;同样的波浪条件下,SW向波浪比WSW向波浪作用更为不利,实际运行管理中应结合波浪数模成果及码头前实际波浪方向调整系泊和作业状态。

The paper examined a dock project by conducting physical model tests on the mooring of a 10000-tonne roll-on/roll-off ship using tugboat assistance on a sloping ramp.The cable tension and ship motion were explored under various combinations of wind,waves,and currents,providing relevant operational and mooring conditions for design and operational purposes.The findings indicate that the cable arrangement was reasonably effective in the design scheme.The forces of wind,waves,and currents on the roll-on/roll-off ship were effectively balanced through the use of tugboat assistance.The tension of each cable group remained below 50%of the breaking force,following the design standard.Regarding the mooring system′s characteristic values,the factors that influenced it in order of significance were waves,wind,and water flow,with the wave period being the most impactful factor.Under identical wave conditions,waves with a SW orientation had a greater negative impact than those with a WSW orientation.Therefore,in actual operation and management,it is crucial to adjust the mooring and operational status according to the numerical simulation results of the waves and the actual wave direction in front of the dock.