Abstract: The pipe trenching dynamic positioning engineering ship is a submarine operation ship that integrates the stem towing operation system, the stern towing operation system and many other underwater operation functions. In order to match the operation function, many large-scale operation equipment are structurally strengthened, and the concave stem towing notch and round stern fairlead are innovatively designed. It carries out calculation and analysis to optimize the cross section, check the longitudinal strength, and verify the local strength of the main equipment reinforcement structure. The hull vibration is also evaluated to take certain vibration reduction measures.

Key words: pipeline trenching dynamic positioning engineering ship, structural design, concave stem towing notch, round stern fairlead, vibration analysis

摘要： 管道挖沟动力定位工程船是一艘集首部拖缆作业系统、尾部拖缆作业系统以及其他多项水下作业功能的海底施工作业船舶,为配合其作业功能,对诸多大型作业设备进行结构加强,并创新性地设计凹形首柱拖缆槽和导缆圆尾。通过计算分析,对横剖面进行优化,校核总纵强度以及校核主要设备加强结构的局部强度,对船体振动进行评估并采取一定的减振措施。

关键词: 管道挖沟动力定位工程船, 结构设计, 凹形首柱拖缆槽, 导缆圆尾, 振动分析