RIGID PIPE PROOFTESTING UNDER EXCESS OVERFILLS WITH VARYING BACKFILL PARAMETERS: SECTION I (VOLUME 6)-IMPLEMENTATION AS RECOMMENDED BY THE RESEARCH UNIT

An 84-in. (2134-mm), reinforced concrete pipe culvert at Cross Canyon was heavily instrumented and tested at varying overfills ultimately reaching 180 ft (55 m). Quasitheoretical internal stresses derived from measured soil stresses and a computerized neutral point analysis were compared with measured values. In this volume, four modes of failure described by Heger (28) are discussed and correlated with Cross Canyon results. Effective density coefficients are suggested for possible use in concrete pipe design. The paper recommends the use of Heger's design approach in conjunction with these coefficients and Caltrans' neutral point program (to be modified) for future pipe designs. The profiles of effective density coefficients vary with construction mode, overfill and pipe stiffness. Considerations used in establishing the profiles are provided. A design procedure is described in Section I(6).3. The Introduction, Historical Background and Description of Instrumentation for the Cross Canyon project will be found in Section I, Volume 1. (FHWA)

• Corporate Authors:

  California Department of Transportation

  Division of Project Developement, P.O. Box 1499
  Sacramento, CA  United States  95807

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Davis, R E
  • Semans, F M
• Publication Date: 1981-7

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Backfilling; Failure; Overtopping; Pipe; Pipe culverts; Reinforced concrete pipe; Rigid structures; Stresses
• Uncontrolled Terms: Proof tests; Rigid pipes
• Old TRIS Terms: Backfills; Neutral point analysis; Overfills
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00380604
• Record Type: Publication
• Report/Paper Numbers: FHWA-CA-SD-81-15
• Contract Numbers: D-4-133
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 30 1984 12:00AM