Numerical Calculation of Buried Pipeline Impacted by Rockfalls and Landslide Deposits

The rockfall has threatened the safety of the pipeline when the natural gas pipelines pass through the mountainous area. The main landslide prone areas represent a threat against the pipeline system. They are identified and their landslide hazard is assessed. In the study, the finite element model of the different sizes of rockfalls impacting buried pipeline was established in ANSYS Workbench. Based on ANSYS/LS-DYNA with the basic theory of nonlinear dynamic mechanics and dynamic calculation method, in the semi-infinite soil medium, by setting dynamic and contact parameters suitably, based on choosing suitable constitutive relation, the vibration rule of buried gas pipeline is gained by the numerical simulation analysis. The study obtains the physical process of intrusive rocks and soil and the stress of a gas pipeline. Also the study gets the damage of the different rockfalls impact accident. By the way of finite element software ANSYS, the study calculates pipe stress under landslide deposits of rock by contact problem, and determines the maximum Misses Stress Criterion and failure length. The results provide the basis for the data estimating for the damaged high pressure gas pipeline.

• Record URL:
  • https://doi.org/10.1061/41202(423)51
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784412022
• Supplemental Notes:
  • Copyright © 2011 ASCE
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Zhou, ZhaoMing
  • Wan, Fu
  • Li, Weiqin
  • Lin, Tiejun
  • Shi, Taihe
• Conference:
  • International Conference on Pipelines and Trenchless Technology 2011
  • Location: Beijing , China
  • Date: 2011-10-26 to 2011-10-29
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: References;
• Pagination: pp 448-457
• Monograph Title: ICPTT 2011: Sustainable Solutions For Water, Sewer, Gas, And Oil Pipelines

Subject/Index Terms

• TRT Terms: Finite element method; Gas pipelines; Landslides; Rockfalls; Safety; Vibration
• Identifier Terms: ANSYS (Computer program)
• Subject Areas: Geotechnology; Pipelines; Safety and Human Factors; I43: Rock Mechanics;

Filing Info

• Accession Number: 01457671
• Record Type: Publication
• ISBN: 9780784412022
• Files: TRIS, ASCE
• Created Date: Dec 20 2012 5:18PM