开阔海域复杂涌浪下大型浮吊作业稳性技术研究

Stability technology research of large floating crane operation under complex surges in open sea

随着我国海洋石油国际化、深水化的不断发展,所面对的水文条件也越来越复杂。深水海域的风、浪、流等因素相互影响更为剧烈,加之开阔海域特有的长波涌,严重影响了海上吊装作业的安全和作业效率,研究开阔海域复杂涌浪下浮吊作业稳性技术势在必行。以东海开阔海域为研究对象,应用MOSES、SESAM等水动力学软件进行了起重船和吊装物耦合运动数值分析研究,并通过对比现场施工和水池模型试验数据,验证了数值模拟算法的精度,最终提出了大型起重船吊装作业概率算法,为复杂涌浪下的锚位设计、安装设计和工期选择提供了理论依据和技术支持,为海洋工程“走出去”战略提供了技术保障。

With the international and deepwater development of offshore oil in China,the hydrological conditions are becoming more and more complex.The more intense interactions of the wind,wave and current in deepwater combined with the unique long wave swell in open sea affect seriously the safety and efficiency of offshore lifting operation.It is imperative to research the stability of floating crane operation under complex sea states in open sea.In this article,the open sea of the East China Sea was taken as the research object.Based on the hydrodynamic software such as Moses and SESAM,the numerical analysis of the coupled motion between floating crane and lifting object was conducted,and its accuracy was verified through the field operation data and the wave basin model test data.Finally,the lifting operation probability algorithm of large floating crane was proposed.The research provides theoretical basis and technical support for anchorage design,installation design and weather window selection under complex sea states,also for technical support of the"going global"strategy.