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.
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Corporate Authors:
California Department of Transportation
Division of Structures Design, 1120 N Street
Sacramento, CA United States 95814Federal 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