Proceedings of the 2025 International Conference on Resilient City and Safety Engineering (ICRCSE 2025)

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Theoretical Assessment of the Collapse Behaviour of Corroded Pipes Under Combined External Pressure, Tension and Bending

Authors
Libei Zhou1, Junwei Ren1, *, Sunting Yan2, Enli Xie1, Hua Shen1
1School of Urban Construction, Zhejiang Shuren University, Hangzhou, 310015, China
2Technology Innovation Center, Zhejiang Academy of Special Equipment Science, Hangzhou, 310020, China
*Corresponding author. Email: junweiren@zjsru.edu.cn
Corresponding Author
Junwei Ren
Available Online 22 September 2025.
DOI
10.2991/978-94-6463-856-1_11How to use a DOI?
Keywords
Subsea pipe; Defect; Collapse; External pressure; Tension; Bending
Abstract

Submarine pipelines experience continuous exposure to complex loading conditions during operation, including external hydrostatic pressure, axial tension and bending moment. The interactive effects of combined loadings significantly amplify structural vulnerability to catastrophic collapse, particularly when interacting with corrosion defect. This investigation presents a comprehensive theoretical framework for assessing the collapse capacity of corroded pipes under complex combined loadings. Firstly, an augmented mechanical model was developed through rigorous elastoplastic analysis. Subsequently, systematic parametric studies were conducted to quantify the relative influence of critical factors including initial ovality, defect sizes, and initial loading. The results shown that the defect width and initial ovality were important parameters that affected the collapse capacity, but the influencing level varied with the magnitude of the initial loadings.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2025 International Conference on Resilient City and Safety Engineering (ICRCSE 2025)
Series
Advances in Engineering Research
Publication Date
22 September 2025
ISBN
978-94-6463-856-1
ISSN
2352-5401
DOI
10.2991/978-94-6463-856-1_11How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Libei Zhou
AU  - Junwei Ren
AU  - Sunting Yan
AU  - Enli Xie
AU  - Hua Shen
PY  - 2025
DA  - 2025/09/22
TI  - Theoretical Assessment of the Collapse Behaviour of Corroded Pipes Under Combined External Pressure, Tension and Bending
BT  - Proceedings of the 2025 International Conference on Resilient City and Safety Engineering (ICRCSE 2025)
PB  - Atlantis Press
SP  - 100
EP  - 110
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-856-1_11
DO  - 10.2991/978-94-6463-856-1_11
ID  - Zhou2025
ER  -