Petroleum Science >2017,??Issue 3:??579-585 DOI: https://doi.org/10.1007/s12182-017-0177-y
Stress analysis on large-diameter buried gas pipelines under catastrophic landslides Open?Access
文章信息
作者：Sheng-Zhu Zhang, Song-Yang Li, Si-Ning Chen, Zong-Zhi Wu, Ru-Jun Wang and Ying-Quan Duo
作者單位：
China Academy of Safety Science and Technology, Beijing 100012, China,College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China,China Academy of Safety Science and Technology, Beijing 100012, China,State Administration of Work Safety, Beijing 100713, China,China Academy of Safety Science and Technology, Beijing 100012, China and China Academy of Safety Science and Technology, Beijing 100012, China
投稿時間：2016-12-12
引用方式：Zhang, SZ., Li, SY., Chen, SN. et al. Pet. Sci. (2017) 14: 579. https://doi.org/10.1007/s12182-017-0177-y
文章摘要
This paper presents a method for analysis of stress and strain of gas pipelines under the effect of horizontal catastrophic landslides. A soil spring model was used to analyze the nonlinear characteristics concerning the mutual effects between the pipeline and the soil. The Ramberg–Osgood model was used to describe the constitutive relations of pipeline materials. This paper also constructed a finite element analysis model using ABAQUS finite element software and studied the distribution of the maximum stress and strain of the pipeline and the axial stress and strain along the pipeline by referencing some typical accident cases. The calculation results indicated that the maximum stress and strain increased gradually with the displacement of landslide. The limit values of pipeline axial stress strain appeared at the junction of the landslide area and non-landslide area. The stress failure criterion was relatively more conservative than the strain failure criterion. The research results of this paper may be used as a technical reference concerning the design and safety management of large-diameter gas pipelines under the effects of catastrophic landslides.
關鍵詞
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Buried gas pipeline, Catastrophic landslide, Finite element analysis, Stress, Strain