Application of LRBF-DQ and CVBFEM Methods for Evaluating Saturated Sand Liquefaction around Buried Pipeline
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 13, Issue 1
Abstract
Liquefaction is a phenomenon that occurs in loose saturated granular soils during seismic loading. In this study, the control volume finite-element method (CVFEM) and local radial basis function-based differential quadrature (LRBF-DQ) method were used to evaluate the liquefaction of the saturated sand around the buried pipelines. Also, the effect of the presence of a trench with highly permeable coarse-grained soils was employed to reduce the liquefaction potential. The results showed that the LRBF-DQ method requires less time to solve the governing equations and, therefore, is a more suitable method for estimating the liquefaction around the pipelines. The difference in the solving time of the two approaches increases with increasing the earthquake duration and decreasing pipeline burial depth. The sensitivity analysis showed that the earthquake duration, burial depth, and radius of the pipeline are the most critical factors affecting the analysis time, respectively. Besides, the presence of a trench with higher permeability materials can significantly decline the liquefaction potential of the soil and reduce the uplift of the pipeline.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 13 • Issue 1 • February 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Sep 22, 2020
Accepted: Sep 22, 2021
Published online: Nov 19, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 19, 2022
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