Study on lateral buckling characteristics of a submarine pipeline with a single arch symmetric initial imperfection. (1st November 2015)

• Record Type: Journal Article
• Authors: Hong, Zhaohui; Liu, Run; Liu, Wenbin; Yan, Shuwang
• Is Part Of: Ocean engineering. Volume 108(2015)
• Page Start: 21
• Page End: 32
• Publication Date: 2015-11-01
• Subjects: Submarine pipeline -- Single arch initial imperfection -- Lateral buckling -- Analytical solution -- Numerical simulation; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2015.07.049
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: With the development of submarine oil and gas resources, research on global pipeline buckling caused by high temperature and pressure in the process of oil and gas transport is becoming an important issue. Owing to human factors or to uneven seabed conditions, local bends are produced in the process of pipeline manufacturing and laying. Those bends are called geometric initial imperfections whose deformation forms can be divided into a single arch symmetric deformation and a double arch antisymmetric deformation. In this paper, the energy method is introduced to calculate the analytical solution of pipeline lateral buckling with a single arch initial imperfection, and the cause of snap buckling phenomenon is discussed. A FEA model is established, and the difference between the analytical solution and numerical solution is also presented. Highlights: Calculate an analytical solution of high order lateral buckling for pipeline with a single arch initial imperfection. Present the difference between the analytical solution and the numerical simulation. Explore the reasons of snap buckling phenomenon in analytical solution.