Modeling Pipe–Soil Interaction under Lateral Movement Using Material Point MethodSource: Journal of Pipeline Systems Engineering and Practice:;2024:;Volume ( 015 ):;issue: 001::page 04023058-1DOI: 10.1061/JPSEA2.PSENG-1498Publisher: ASCE
Abstract: Excessive lateral movements of buried pipes in geohazard-prone areas frequently jeopardize the structural integrity and serviceability of pipelines, as well as the safety of the surrounding geoenvironments. Based on the material point method (MPM), this paper investigates the pipe–soil interactions under lateral pipe movements, with a focus on the failure mechanisms of the surrounding soil during postfailure stages. The accuracy of the numerical model is validated by comparison with the results of large-scale model tests in the literature. There is a strong correlation between the experimental and numerical results in terms of force–displacement relationships and soil failure patterns. The impacts of burial depths, pipe diameters, and soil densities on the failure mechanism are analyzed in detail. The results showed that general shear failure tends to occur in shallow pipe conditions, resulting in significant ground heave. As the pipe burial depth increases, the peak soil resistance increases accordingly, and a transition from general shear failure to a localized flow-around mechanism gradually evolves. Furthermore, the softening effect after the peak resistance is reduced under the smaller pipe diameter and greater buried depth conditions. Comparisons of failure patterns illustrate that the embedment ratio is the main determinant of pipe–soil interaction modes as compared with the soil density. Transition failure often occurs when the embedment ratio ranges from 4.5 to 9.5, with slight influences from pipe diameters and soil properties. Finally, the prediction of the soil peak lateral resistance is explored to assist in underground pipeline design.
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contributor author | Tian-Cheng Xie | |
contributor author | Hong-Hu Zhu | |
contributor author | Chun-Xin Zhang | |
contributor author | Wei Liu | |
contributor author | Dao-Yuan Tan | |
contributor author | Wei Zhang | |
date accessioned | 2024-04-27T22:27:36Z | |
date available | 2024-04-27T22:27:36Z | |
date issued | 2024/02/01 | |
identifier other | 10.1061-JPSEA2.PSENG-1498.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4296703 | |
description abstract | Excessive lateral movements of buried pipes in geohazard-prone areas frequently jeopardize the structural integrity and serviceability of pipelines, as well as the safety of the surrounding geoenvironments. Based on the material point method (MPM), this paper investigates the pipe–soil interactions under lateral pipe movements, with a focus on the failure mechanisms of the surrounding soil during postfailure stages. The accuracy of the numerical model is validated by comparison with the results of large-scale model tests in the literature. There is a strong correlation between the experimental and numerical results in terms of force–displacement relationships and soil failure patterns. The impacts of burial depths, pipe diameters, and soil densities on the failure mechanism are analyzed in detail. The results showed that general shear failure tends to occur in shallow pipe conditions, resulting in significant ground heave. As the pipe burial depth increases, the peak soil resistance increases accordingly, and a transition from general shear failure to a localized flow-around mechanism gradually evolves. Furthermore, the softening effect after the peak resistance is reduced under the smaller pipe diameter and greater buried depth conditions. Comparisons of failure patterns illustrate that the embedment ratio is the main determinant of pipe–soil interaction modes as compared with the soil density. Transition failure often occurs when the embedment ratio ranges from 4.5 to 9.5, with slight influences from pipe diameters and soil properties. Finally, the prediction of the soil peak lateral resistance is explored to assist in underground pipeline design. | |
publisher | ASCE | |
title | Modeling Pipe–Soil Interaction under Lateral Movement Using Material Point Method | |
type | Journal Article | |
journal volume | 15 | |
journal issue | 1 | |
journal title | Journal of Pipeline Systems Engineering and Practice | |
identifier doi | 10.1061/JPSEA2.PSENG-1498 | |
journal fristpage | 04023058-1 | |
journal lastpage | 04023058-12 | |
page | 12 | |
tree | Journal of Pipeline Systems Engineering and Practice:;2024:;Volume ( 015 ):;issue: 001 | |
contenttype | Fulltext |