中文摘要：

深海平台设计通常需要混合模型试验，为了和全水深的系泊系统特性尽量保持一致，除了水深和跨距变小外，其他的特性采用改进了的自适应混沌粒子群算法（ACPSO）对截断后的系泊系统进行优化设计，使其特性尽量和全水深相似；以一FPSO，工作水深为914．4m为例，截断水深为214．4m，同时考虑总系泊系统水平和垂直两个方向以及具有代表性的单根系泊缆静力特性相似对等效水深截断系统进行了优化计算；数值试验结果表明，选取的数学模型、优化方法是快速有效的。

英文摘要：

Hybrid model testing is commonly used in the design of deep--sea offshore platform. In order to consist with the characteris tics of full--depth mooring system, the improved adaptive chaotic particle swarm algorithm （ACPSO） is used, except for diminishing the wa ter depth and span. Taking a FPSO platform with working depth of 914.4m for example, which truncated depth is 214.4m. Considering the similarity of static characteristics of total mooring system both horizontal and vertical as well as the representative single root mooring ropes to optimization calculate with the truncated mooring system The result shows that the selected mathematical model and the optimization method is fast and efficient.