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DOI: 10.1371/journal.pone.0130459
Title:
Numerical Modeling of Mechanical Behavior for Buried Steel Pipelines Crossing Subsidence Strata
Author: J. Zhang; Z. Liang; C. J. Han
Source Publication: PLOS ONE
ISSN: 1932-6203
Indexed By: SCI-E
Publishing Year: 2015
Date Published: 2015-6-23
Volume: 10, Issue:6
Language: 英语
Keyword: Deformation ; Bending ; Loess ; Finite element analysis ; Oils ; Friction ; Mechanical properties ; Mechanical stress
Subject in Chinese: 管道 ; 黄土
Subject: PIPELINES ; LOESS
English Abstract: This paper addresses the mechanical behavior of buried steel pipeline crossing subsidence strata. The investigation is based on numerical simulation of the nonlinear response of the pipeline-soil system through finite element method, considering large strain and displacement, inelastic material behavior of buried pipeline and the surrounding soil, as well as contact and friction on the pipeline-soil interface. Effects of key parameters on the mechanical behavior of buried pipeline were investigated, such as strata subsidence, diameter-thickness ratio, buried depth, internal pressure, friction coefficient and soil properties. The results show that the maximum strain appears on the outer transition subsidence section of the pipeline, and its cross section is concave shaped. With the increasing of strata subsidence and diameter-thickness ratio, the out of roundness, longitudinal strain and equivalent plastic strain increase gradually. With the buried depth increasing, the deflection, out of roundness and strain of the pipeline decrease. Internal pressure and friction coefficient have little effect on the deflection of buried pipeline. Out of roundness is reduced and the strain is increased gradually with the increasing of internal pressure. The physical properties of soil have a great influence on the mechanical properties of buried pipeline. The results from the present study can be used for the development of optimization design and preventive maintenance for buried steel pipelines.
Related Link: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0130459&type=printable
Citation statistics:
被引频次[WOS]:5   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/21920
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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Affiliation: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, China;School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, China;School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, China

Recommended Citation:
J. Zhang,Z. Liang,C. J. Han. Numerical Modeling of Mechanical Behavior for Buried Steel Pipelines Crossing Subsidence Strata[J]. PLOS ONE,2015-01-01,10(6)
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