西南石油大学学报(自然科学版)

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Analysis of Mechanical Strength of Buried Pipelines
in Landslide Areas

Lian Zhangfu1, Li Fenglei2   

  1. 1. Xinjiang Oilfield Construction Company,China Petroleum Engineering Design Co. Ltd.,Karamay,Xinjiang 834000,China
    2. China Petroleum Engineering Design Co. Ltd.,Haidian,Beijing 100085,China
  • Online:2014-04-01 Published:2014-04-01

Abstract:

Aiming at the actual work environment of buried pipeline in a certain landslide areas in the west,we carried the
theoretical analysis of the forces of buried pipeline. Because the forces of buried pipeline in landslide areas are very complicate,
the finite element mechanical model between the earth and the buried pipeline was constructed with finite element method
(FEA). The model can simulate conveniently and accurately the stress and strain of the pipeline under different work conditions
and different mechanical boundary conditions as well as the interactions between the buried pipeline and the earth. Based on
the model,the changes of the maximum stress and strain of the pipe under the different angles of slope and different lengths of
the landslide were analyzed and studied in detail. When the buried pipeline is with 20℃ angle of landslide,the relationship of
the maximum stress of the buried pipe varies with the length of the landslide. The research provides the theoretical supports for
the safety length of the landslide segment. The results of the research can be applied in the analogous buried pipeline.

Key words: buried pipelines, landslide area, finite element analysis, Von Mises stress