中文摘要：

主要考虑静力特性相似进行了深海平台混合模型试验中的等效水深截断系统优化设计研究。优化方法选用混合离散变量模拟退火法和离散复合形法，目标函数为截断系统和原系统的静力特性相似程度，通过选取适当的设计准则，能在一定程度上减小截断系统与全水深系统动力特性之间的差异。建立了锚泊线材质数据库，以锚泊线材质名和直径作为关键字。在计算锚泊系统静力特性时，先用四阶龙格库塔法求解单根锚泊线的静力特性，然后通过拉格朗日插值法求解总系泊系统的静力特性。采用C＋＋语言基于面向对象方法开发了计算机程序。具体优化计算时，先分别用两种优化法计算出相应的结果，然后选取较好的一个作为最终结果。以一个工作水深为320m的10万t内转塔式系泊FPSO为例，进行了等效水深截断系统优化设计计算，截断水深选为160m，并选取几个典型工况对截断系统和全水深系统都进行了缩尺比为λ=80的模型试验，比较两者的试验结果发现，截断系统设计是成功的。

英文摘要：

The optimization design of equivalent water depth truncated mooring system in hybrid model testing for deep sea platforms is explained in this paper. During the design, the similarity of static characteristics between the truncated and full depth system is mainly considered. The optimization mathematical model for the equivalent water depth truncated system design is set up by using the similarity in numerical value of the static characteristics between the truncated system and the full depth one as the objective function. The dynamic characteristics difference between the truncated and full depth mooring system can be descreased by selecting proper design rule. To calculate the static characteristics of the mooring system, the fourth order Runge-Kutta method is used to solve the static equilibrium equation of the single mooring line. After the static characteristic of the single mooring line is calculated, the static characteristic of the whole mooring system is calculated by Lagrange numerical interpolation method. The mooring line material database is established and the standard material name and the diameter of the mooring line are selected as the main key. The hybrid discrete variable annealing simulation algorithm and the complex algorithm for discrete variables are used as the optimization method. The C＋＋ programming language is used to develop the computer program accordmg to the object-oriented method. After the optimization calculation is performed with the two methods mentioned above separately, the better results are selected as the final ones. To examine the developed program, taking a 100 000t, turret mooring FPSO in water depth of 320m as an example, equivalent water depth truncated mooring system optimum design calculation is performed to obtain the conformation parameters of the truncated mooring system, in which the truncated water depth is 160m, The model test under some typical environment conditions is done for both the truncated and the full depth system with model scale factor 80. Afte