THREE-DIMENSIONAL RESPONSE OF DEEPLY BURIED PROFILED POLYETHYLENE PIPE

Three-dimensional finite element stress analysis is used to examine the response of profiled polyethylene (PE) pipe under various burial conditions. Radial, circumferential, and axial normal stresses are examined for three pipes of different diameter buried at various depths in different soil materials. The implications for PE pipe design are examined in relation to arching, time-dependent pipe response, and tensile rupture. The study found that circumferential stresses are predominantly compressive and can be predicted reasonably well using conventional two-dimensional analysis. Tensile axial stresses, which develop in the inner liner of the pipe, cannot be evaluated using three-dimensional analysis. These tensions are greatest at the spring line and may be an important performance limit for lined corrugated PE pipe under deep burial. The pipes considered have a peak tension of not more than half the AASHTO allowable value at 22-m burial in very good quality (SW95) backfill material or 11 m in the same soil at lower density (SW85).

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1995/1514/1514-006.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=THREE-DIMENSIONAL+RESPONSE+OF+DEEPLY+BURIED+PROFILED+POLYETHYLENE+PIPE&author=I.+Moore&publication_year=1995
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1514, Design and Performance of Underground Pipe. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Moore, I D
• Publication Date: 1995

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 49-58
• Monograph Title: Design and performance of underground pipe
• Serial:
  • Transportation Research Record
  • Issue Number: 1514
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Axial loads; Diameter; Finite element method; Mathematical models; Pipe; Radials; Soil arching; Soils by density; Stresses; Underground structures
• Uncontrolled Terms: Axial stress; Burial depth; Polyethylene pipe; Soil density
• Old TRIS Terms: Circumferential stress; Liners; Radial stress; Tensile rupture; Time dependent response
• Subject Areas: Bridges and other structures; Highways; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00715653
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jan 25 1996 12:00AM