针对近年极端海洋性气候频发所导致的FPSO系泊系统安全性问题，从服役多年系泊系统钢缆的剩余强度入手，评估影响船体运动的环境参数，给出系泊钢缆的安全系数。利用准静态的方法估算环境等级的范围，选取南海某型FPSO建立系泊系统耦合计算模型。应用AQWA?DRAFT与AQWA?NAUT模块，采用时域非线性方法对系泊系统进行耦合分析，在满足规范系数的前提下确定现服役系泊系统的定位能力，预报系泊系统所能承受的最大风浪流极值组合及对应的台风等级。通过计算可看出钢缆强度的下降直接影响着系泊系统的定位能力，导致其无法抵御百年一遇的台风，系泊系统可抵御台风等级降至12级。

The extreme marine weather occurs frequently in recent years, which imperils the safety of floating, pro?duction, storage and offloading( FPSO) mooring system. Aiming at this problem, the paper starts from the analysis of the residual strength of mooring ropes in service for many years, assesses the environment parameters that influ?ence the ship motion and provides the mooring rope''s safety factor. The quasi?static method is used to assess the scope of environment grade and an FPSO system on the South China Sea is chosen to build the computation model for the coupling of mooring system. Applying the AQWA?DRAFT and AQWA?NAUT modules to do coupling analy?sis of the mooring system by nonlinear method in time domain, ascertaining the station keeping ability on the prem?ise of satisfying the coefficient stipulated in code, forecasting the combination of extreme wind, wave and current that the mooring system can bear, and the corresponding typhoon class. Through the calculation,

采用多体水动力学软件AQWA进行横向补给状态下两船在波浪中的频域和时域分析。对高架索道上的恒张力表示为瞬时张力,分析不同航速、浪向角对横摇、垂荡和纵摇方向运动特性的影响,求得两船横向补给时较佳的浪向角和航速,为横向补给时航速和航向的选择提供指导。

This paper uses AQWA to compute the swaying motion of two ships in replenishment of high-line system in waves. The constant strain in high-line is expressed by transient strain matrix in coupling equations. The influences on motion amplitude of roll, heave, pitch by different speed or wave-to-course angle are analyzed and obtain favorable speed and wave-to-course angle, thus provide guidance for selection of speed and course.

铺管船在海上敷设海底管道是动态的并且非常复杂的过程，为了合理分析铺管船锚泊方案，基于Ansys-AQWA软件，考虑风载荷、流载荷、波浪载荷等因素，对铺管船与锚泊系统进行耦合时域分析，给出了针对多点定位系泊系统海洋工程船的分析流程，而且从铺管船锚泊移位系统的强度校核结果、各项运动最大位移、操作简便性等方面评析铺管船作业锚泊方案，得出较优方案指导实际工程。结果表明，本文采取的方法具有工程应用性，评析结果可以作为实际工程的参考。

The operation of pipe-laying vessel in subsea pipeline offshore installation is dynamic and complex process, in order to give the reasonable analysis of pipe laying vessel mooring scheme, based on the ANSYS-AQWA software, considering wind load, current load and wave load, the coupled analysis between pipe-laying vessel and mooring system is brought out in the time domain. According to the analysis process of multi-point positioning mooring system of marine engineering vessel is given, and take the strength assessment of mooring system, the maximum displacement of the movement on each direction, the simple operation into consideration to analysis the operating mooring scheme of pipe-laying vessel. According to the analysis results from this paper, the optimum scheme is obtained to guide the actual project. The results show that, the methods from this article has engineering application and analysis results can be used as a practical reference.

利用水动力分析软件AQWA研究了内转塔式单点系泊参数对海上浮式生产储油船FPSO(floating production,storage and affcoading system)系统动力效应的影响特性,定量分析了内转塔位置、系泊缆材料分布、系泊缆预张力、系泊缆数量、系泊缆布置形式等参数对FPSO系统动力效应的影响,对每个系泊参数采取多个特征量进行比较分析,计算结果表明:转塔位置距船艏柱25%Lpp时风标效应及定位效果最好,多成分系泊缆材料分布采取下端钢链9%、聚酯缆90%、上端钢链1%时,系泊缆数量取9根且为3组×3根/组布置时定位效果最好,缆绳受力最小.以FPSO水平偏移量与系泊缆的安全系数为目标,提出了一套系泊系统的优选方案,计算结果表明系泊性能优良,与初步设计方案相比有了显著地提高.文中的计算及分析结果对内转塔式FPSO系泊系统的设计具有一定指导意义.

In this paper , the influence of BTM ( Buoyant Turret Mooring ) system parameters on dynamic re-sponse of FPSO system was analyzed by software AQWA .The influence of parameters , such as turret location , materials distribution , pre-tension of mooring lines , the number of mooring lines , layout of mooring lines etc ., on dynamic response of FPSO system was analyzed quantitatively .Several characteristics were comparatively ana-lyzed for each mooring parameter .The results showed that when turret was located at 25%Lpp, the system had best weather vane and positioning effect .If 9%chain,90% polyester,1%chain was taken as multi-component mooring line, and mooring lines were arranged as 3groups ×3/group, the system would have positioning effect and the lines would have minimum force .An optimized proposal of mooring system was suggested by comprehen-sively considering the horizontal displacement of FPSO and the safety factor of mooring lines .The result showed that the optimized mooring