海港锚地最小设计水深计算方法的数学模型

Mathematical model of calculation method for minimum design water depth of seaport anchorage

针对海港锚地的最小设计水深计算方法,进行了数学模型研究。采用UNDERKEEL计算模型,研究波浪作用下的船舶竖向运动,输出可提供船舶竖向运动的幅值响应算子(RAO)。研究中将锚地水深值按照1.2~2.5倍船舶吃水(T)以步长为0.05 T增量作为输入参数进行计算研究,得出不同类型和等级的船舶在不同波高和波周期影响下的触底概率。根据选取的允许触底概率得出海港锚地最小设计水深与船舶吃水的参数关系,最终给出海港锚地最小设计水深的计算公式。相关研究方法和计算公式可以为海港锚地设计项目提供参考,并可作为海港锚地相关设计规范编制的参考资料。

Aiming at the calculation method of the minimum design water depth of seaport anchorage,the mathematical model is studied.The UNDERKEEL model is used to study the vertical motion of ships under the action of waves,and the outputs can provide the amplitude response operator(RAO)of the vertical motion of ships.In the study,the water depth of the anchorage is calculated according to 1.2~2.5 times of the ship s draft(T)with a step length of 0.05 T as the input parameter,and the bottom touching probability of different types and grades of ships under the influence of different wave height and wave period is obtained.According to the selected allowable bottom touching probability,the parameter relationship between the minimum design depth of seaport anchorage and the ship s draft is obtained.Finally,relevant research methods and calculation formula of the minimum design depth of seaport anchorage are given,which can provide a reference for the design project of seaport anchorage,and can be used as a reference for the preparation of relevant design codes of seaport anchorage.