吸力锚下放过程的动力学分析  

Dynamic analysis for lowering of suction anchor

作　　者：张大朋[1] 张霄杰 许雨心 白勇[1] 朱克强[3] 周晨[3] ZHANG Dapeng;BAI Yong;XU Yuxin;ZHU Keqiang;ZHOU Chen(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;Department of Ocean Science ＆ Engineering,South University of Science and Technology,Shenzhen 518055,China;Faculty of Maritime and Transportation,Ningbo University,Ningbo 315211 China)

机构地区：[1]浙江大学建工学院,浙江杭州310058 [2]南方科技大学海洋科学与工程系,广东深圳518055 [3]宁波大学海运学院,浙江宁波315211

出　　处：《石油工程建设》2018年第3期12-17,共6页Petroleum Engineering Construction

基　　金：长江学者和创新团队发展计划资助项目(IRT0734);国家自然科学基金资助项目(11272160)

摘　　要：吸力锚技术可为船舶和平台提供系泊力和支撑基础,且施工简便,可反复利用,为此对吸力锚的下放过程进行分析。运用Orca Flex软件建立了吸力锚下放过程的动力学分析模型,计算得到了一些结论:在顺浪状态下,吸力锚下放过程中不会发生大的横摇及艏摇,但在吸力锚完全没入水中后会发生比较明显的纵摇;横浪状态下与顺浪状态下的主要不同是:在顺浪状态下吸力锚的横摇角和艏摇角始终为0°,而在横浪状态下,吸力锚的横摇角在时域上随着吸力锚入水深度的增加也逐渐增加,艏摇角则呈现出在时域上先增大后减小并会在时域中发生小范围的反复波动。Suction anchors can offer mooring force and support base for ships and platforms. Its construction is easy and it can be utilized repeatedly. This paper analyzes the lowering process of the suction anchor. The dynamic analytical model is established by applying software Orca Flex,and following concludes are obtained through calculation： In the following sea state,the rolling and yawing of the anchor during lowering process are not large,but the pitching of the anchor will be obvious when the anchor emerges into water completely. The main difference is that in the following sea state,the rolling angle and yawing angle of the anchor are zero constantly; but in the beam sea state, the rolling angle will gradually increase with the increasing emerging depth of the anchor, the pitching angle will increase first and then decrease with small fluctuation.

关 键 词：吸力锚 下放过程 OrcaFlex 动力学分析 

分 类 号：TE95[石油与天然气工程—石油机械设备]