Stress analysis on large-diameter buried gas pipelines under catastrophic landslides
投稿时间:2016-12-12  
英文关键词:Buried gas pipeline, Catastrophic landslide, Finite element analysis, Stress, Strain
基金项目:This research was funded by the National Science and Technology Support Program (2015BAK16B02 and 2015BAK16B01) and the Fundamental Research Funds of China Academy of Safety Science and Technology.
作者单位
Sheng-Zhu Zhang China Academy of Safety Science and Technology, Beijing 100012, China 
Song-Yang Li College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China 
Si-Ning Chen China Academy of Safety Science and Technology, Beijing 100012, China 
Zong-Zhi Wu State Administration of Work Safety, Beijing 100713, China 
Ru-Jun Wang China Academy of Safety Science and Technology, Beijing 100012, China 
Ying-Quan Duo China Academy of Safety Science and Technology, Beijing 100012, China 
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英文摘要:
      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.
Sheng-Zhu Zhang,Song-Yang Li,Si-Ning Chen,Zong-Zhi Wu,Ru-Jun Wang,Ying-Quan Duo,2017.Stress analysis on large-diameter buried gas pipelines under catastrophic landslides.Petroleum Science,(3):579~585.
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