考虑平台转动的等效水深截断系泊系统优化设计  

Optimized design of mooring system in equivalent water depth truncation under the consideration of rotation

作　　者：潘沈浩[1] 王树青[1] 刘利壮 

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,山东青岛266100

出　　处：《海洋工程》2017年第1期31-41,共11页The Ocean Engineering

基　　金：国家自然科学基金项目(51490675;51625902);泰山学者工程资助项目

摘　　要：等效水深截断是混合模型试验中非常重要的一步,合理的截断方案是模型试验成功的前提。现有的研究大多忽略对平台转动的考虑,该文在静态相似准则的基础上增加对平台转动的考虑,推导了系泊系统回复力和转矩的计算公式,建立了满足静态一致性的目标函数,进而采用粒子群算法进行等效水深截断优化设计。以某深水半潜式平台为例,首先在不考虑转动的情况下对其系泊系统进行等效截断,研究发现截断水深的变化对转矩的优化结果影响较大,从而证明了平台转动是应该考虑的。其次在考虑转动的情况下对系泊系统进行等效截断,通过水动力软件验证所优化的结果,证明该方法的可行性,为后续的等效水深截断优化设计的研究提供参考。The equivalent water depth truncation is a very important step in the hybrid model test,where reasonable truncation scheme is the premise of its success.Mostly,the existing researches ignored the rotation motion of platform.This paper derives the calculation formula of restoring force and torque in mooring system and sets up the objective function with considering the rotation which is based on the static similarity criterion,and then conducts a optimized design of equivalent water depth truncated with the particle swarm algorithm.Taking a deepwater semi-submersible platform as an example,firstly,the equivalent truncated mooring system is designed without considering the rotation,and the result shows that the variation of truncated water depth has observably influence on the optimized results of torque,which proves that the consideration of rotation is necessary.Secondly,the equivalent truncated mooring system is designed with considering the rotation,and the optimized result of this method is proved feasible by a hydrodynamic software.This research could provide a reference for the future optimized design of equivalent water depth truncated.

关 键 词：系泊系统 半潜式平台 水深截断 优化设计 粒子群算法 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]