海底悬跨管线涡激振动实验方法探讨

随着我国海洋石油开采业的发展,海底悬跨管线涡激振动的研究越来越受到重视。本文总结了海底悬跨管线涡激振动的实验研究与进展,对海底悬跨管线的涡激振动实验方法、测试技术、分析方法以及实验中可能存在的难点问题进行了详细讨论和分析;给出了波流水槽内稳定流、波浪以及波流联合作用等条件下海底悬跨管线的涡激振动实验设计原则和方法,进行了海底悬跨管线的涡激振动实验设计,实验主要关注于涡激共振由一阶共振向二阶共振过渡的模态过渡特征以及过渡范围内管线的振动特征,目前实验已在大连理工大学海岸和近海工程国家重点实验室的波流水槽中完成;最后,提出了相关的研究建议。

A Review of Experimental Methods for Investigation on VIV of Submarine Pipeline Span

As development of Chinese offshore oil industry, the investigation on vortex induced vibrations (VIV) of submarine pipeline span gets more and more public recognition. A comprehensive review of progress of experimental method, measurement technique and analysis methods for VIV of submarine pipeline span is presented in this paper. Some difficult problems in VIV experiment are analyzed in detail. The design principle and parameters for VIV experiment in a wave current tank, where the excitation would be either regular waves, uniform currents, or a combination of above two are discussed. Procedures for designing experiments in a wave current tank are proposed. Designed experiments, that have been performed in a wave current tank located at the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology (DUT), was focused mainly on the transition from the first dominant mode to the second one and the vibration characteristics in the range of transition. Finally, some suggestions are made for further research.