Mechanical Analyses of Underground Pipelines Subjected to Ground Subsidence Considering Soil-Arching Effect
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 14, Issue 2
Abstract
In this study, a new mechanical model is proposed to compute earth pressure above a pipeline considering pipe-soil interaction and three-dimensional soil arching effects of cohesive fills, based on the Terzaghi vertical sliding surface theory. In this model, the pipeline was mechanically separated into buried and suspended segments, whose stress distribution and deformation were solved according to the boundary conditions and geometric conditions. Comparisons to both the test data and corresponding finite element codes concretely verify the proposed mechanical model. Then a parametric investigation indicated that the mechanical behavior of the pipe is greatly affected by the size of a subsidence area and the flexural rigidity of the pipe.
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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 acknowledge the financial support provided by Natural Science Foundation of China (Grant No. 42177121) and the Project of Key Laboratory of Geohazard Prevention of Hilly Mountains, and the Ministry of Natural Resources (Fujian Key Laboratory of Geohazard Prevention, No. FJKLGH2020K001).
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 14 • Issue 2 • May 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jul 7, 2022
Accepted: Nov 7, 2022
Published online: Dec 27, 2022
Published in print: May 1, 2023
Discussion open until: May 27, 2023
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