1.Southern Marine Science and Engineering Guangdong Laboratory (zhanjiang), Zhanjiang 524005, China;
2.College of Safety and Ocean Engineering, China University of Petroleum-Beijing, Beijing 102249, China;
3.Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
Abstract：Large diameter cold water pipe in the process of conveying large amount of seawater. In order to reveal the dynamic response characteristics of the cold-water pipe under the action of platform motion, based on the cantilevered beam theoretical model, the pipe vibration control equations and boundary condition are established by comprehensively considering the platform motion, internal flow, external flow and clump weight action, combined with the semi-analytical solution method. The semi-analytical solutions under two boundary conditions are solved and compared with the Galerkin method to verify its accuracy and effectiveness. The results show that only the platform motion amplitude affects the development law of pipe vibration deformation, while the effect of platform vibration frequency can be almost disregarded. Under the action of platform motion, the influence of the internal flow on the pipe vibration deformation enter the transition stage in advance, while the platform motion has little effect on the lateral displacement of the pipe vibration under the clump weight at the bottom of the pipe, the stronger the suppression effect on the vibration deformation of the pipe.
张理1，谭健2，张玉龙3，马鸿宇2，段青峰2，段梦兰2. 考虑平台运动作用的大口径冷水管动力响应特性研究[J]. 振动与冲击, 2023, 42(20): 136-147.
ZHANG Li1,TAN Jian2,ZHANG Yulong3,MA Hongyu2,DUAN Qingfeng2,DUAN Menglan2. Research on dynamic response of a large diameter cold water pipe considering platform motion. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(20): 136-147.
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