Treatment on Big Fold Angle of Towing Pipes on the Directly Buried Heating Pipe

The horizontal guidance trenchless towing pipe technology has been increasingly used in heating engineering because of its high efficiency, safety feature. The heating pipeline bears not only inner pressure load, soil load and transportation load, but also alternation temperature load which is larger than inner pressure load. Remarkably, the pipeline will emerge big fold angle when the towing pipe is connected with the directly buried pipeline that already exists. In order to prevent the fold pipe from damage, compensator is usually used to protect the pipe with big fold angle. ANSYS is used to simulate directly buried heating pipe with 12° fold angles for pipe size DN400 in this paper. Different curvature radius elbows are used to replace big fold angle pipe separately and the compensator near the big fold angle is canceled in the numerical simulation. Result shows that elbows with proper curvature radius can not only satisfy the fatigue strength, reduce construction difficulty and costs, but also increase the reliability of the buried pipeline. This paper provides theory basis for the trenchless towing pipe technology application in the heating industry.

• Record URL:
  • https://doi.org/10.1061/41202(423)2
• 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:
  • Wang, Fei
  • Wang, Guowei
  • Du, Baocun
• 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 10-17
• Monograph Title: ICPTT 2011: Sustainable Solutions For Water, Sewer, Gas, And Oil Pipelines

Subject/Index Terms

• TRT Terms: Curvature; Fatigue strength; Heating (Vehicles); Loads; Simulation; Trenchless technology
• Identifier Terms: ANSYS (Computer program)
• Subject Areas: Construction; Pipelines; I50: Construction and Supervision of Construction;

Filing Info

• Accession Number: 01469741
• Record Type: Publication
• ISBN: 9780784412022
• Files: TRIS, ASCE
• Created Date: Jan 17 2013 1:48PM