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< Natural Gas and Oil > Editorial Department
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2015 Vol.6

    Analysis on Seismic Safety of Buried Pipeline Containing Volumetric Defects in Fault Movement
    Author of the article:Li Hongpeng, Liu Wu, Feng Xiaohong, Zhang Hongqi, Xu Chunlin
    Author's Workplace：1.PetroChina West-East Gas Pipeline Company; 2.Southwest Petroleum University Oil and Gas Engineering Institute;3.Shangdong Natural Gas Pipeline Co., Ltd., 4.PetroChina Natural Gas Pipeline Company
    Key Words：Volumetric defect; Buried pipeline; Fault movement; Seismic safety
    Abstract：Researched is stress-stain response of buried pipeline with volumetric defects in fault movement by using solid model and soil spring model, discussed are different stress and strain distribution in pipelines with and without defects and analyzed is effect of such factors as different defect depths, defect areas and locations on stress and strain distribution in pipeline top and bottom, established is the safety evaluation criterion for buried pipeline with defects in fault movement according to the results obtained from finite element models with different defect parameters and results of finite element analysis and circumferential fracture stress calculated as per ASME B31G standard and analyzed is the safety of buried pipeline with defects in fault movement. The results show that defects with a depth more than 30% pipeline wall thickness will bring a threat to pipeline seismic safety in fault movement, depth and location of pipeline defects have a great effect on pipeline seismic safety when defects are located in pipeline bottom and defects have more effect on safety than any other defect factors and area of defects has relatively small effect on the safety provided it is within certain limits.

     


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