PRESTRESS TENDONS ON SHORT RADIUS CURVES

This report discusses the friction factor and ultimate tensile strength achieved by multi-strand tendons stressed around short radius curves. It was found that a pre-fabricated tendon of as many as 33 one-half-inch diameter strands, stressed through 1.7 radians of arc in a 10 foot radius, can develop its normal ultimate strength. The commonly used friction factors for rigid conduit, of k=0.0002 and u=0.25 were found to be valid for this configuration with some controls. The research project has been terminated because of a change in design philosophy, and because of the permanent cancellation of the construction project which would have completed the structure to be tested.

• Corporate Authors:

  California Department of Transportation

  Division of Structures Design, 1120 N Street
  Sacramento, CA  United States  95814

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Bezouska, T J
• Publication Date: 1975-10

Media Info

• Pagination: 32 p.

Subject/Index Terms

• TRT Terms: Beams; Bridges; Concrete structures; Friction factor; Prestressed concrete; Prestressing; Radius; Reinforcing materials; Tendons; Tensile strength
• Old TRIS Terms: Cantilever beams; Circular prestressing
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00143039
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CA-DOT-DS-41551759 Final Rpt., FHWA-RD-76-S0505
• Files: NTIS, TRIS, USDOT, STATEDOT
• Created Date: Oct 6 2003 12:00AM