Finite-Element Analysis of Pipelines with Axial Walking and Lateral Buckling
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 12, Issue 3
Abstract
A pipeline is prone to axial movement, called pipeline walking, under heat-up and cooldown cycles. The build-up of axial force along the pipeline can result in the phenomenon referred to as lateral buckling. Walking and lateral buckling can both influence pipeline movement performance and threaten the safety of pipeline systems. The numerical simulation method is adopted to study the pipeline movement laws under walking and buckling interactions. Walking and buckling interactions are classified into three types for different forms of seabed slopes, and corresponding mitigation methods are proposed. The effects of buckling number, route bend, sleeper spacing, and anchor position on the lateral displacement amplitude, axial displacement, and effective axial force (EAF) of the pipeline are analyzed. Criteria for the mitigation methods are proposed based on parameters such as the pipeline end expansion, buckling failure parameter, maximum anchor force, and minimum compressive EAF. The results show that the anchor position has a great influence on the intertransformation of pipeline buckling and walking. The difference in anchor force can reach 51.1% considering different anchor positions.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors are grateful for the support provided by the National Natural Science Foundation of China (Grant No. 51679162), and the Natural Science Foundation of Tianjin (Grant No. 17JCZDJC39900).
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Information & Authors
Information
Published In
Journal of Pipeline Systems Engineering and Practice
Volume 12 • Issue 3 • August 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Apr 28, 2020
Accepted: Dec 14, 2020
Published online: Mar 26, 2021
Published in print: Aug 1, 2021
Discussion open until: Aug 26, 2021
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