Study on pure in-line vortex-induced vibrations of free-spanning pipeline considering pipe-soil interaction at shoulders

被引：0

作者：

Xu W. ^{[1
]}

Xie W. ^{[1
]}

Peng B. ^{[1
]}

Gao X. ^{[1
]}

机构：

[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2016年 / 37卷 / 09期

关键词：

Flow-pipe-soil coupling; Free spanning; Plasticity index; Pure in-line (IL); Shoulder; Vortex-induced vibrations (VIVs);

D O I：

10.11990/jheu.201507052

中图分类号：

学科分类号：

摘要：

To reveal the dynamic features of a free-spanning pipeline undergoing pure in-line (IL) vortex-induced vibrations (VIVs) on the seabed, in this paper, we consider the pipeline-soil interaction at the shoulders. In combination with the Euler-Bernoulli beam theory and the Van der Pol equation, we propose a pure IL VIV prediction model for a free-spanning pipeline on the seabed. We studied the influences of the undrained shear strength at the mudline, the strength gradient, the pipeline embedding depth in the soil at the shoulders, and the plasticity index in pure IL VIVs in a spanning pipeline. We found that pure IL VIVs are more easily excited in the presence of weaker undrained shear strength at the mudline, a smaller strength gradient, shallower pipeline embedment, and a larger plasticity index. © 2016, Harbin Institute of Technology. All right reserved.

引用

页码：1184 / 1189

页数：5

共 10 条

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