TASK "A" END-BOLTED COVER PLATES. FINAL REPORT
Twenty-two beams were tested to determine if end-bolting the cover plate ends would increase the fatigue life as compared to conventional end-welding. The cover plates were welded to the flanges over a 914-mm (3-ft) fixed length. They were extended beyond the weld ends by the amount needed for high-strength bolting them to the flanges with six, four or two bolts. These three types of detail exhibited, on average, a fatigue life of 16 times, 25 times and 14 times, respectively, that of the end-welded cover plate (Category E). The results indicated that bolting the cover-plate end raised the fatigue strength of the detail by three stress Categories, from E to B. Recommended design and fabrication methods for end-bolted cover plates are presented. A parametric analysis of simple span and two-span continuous highway bridges indicated that girders with end-bolted cover plates would be fatigue-proof and cheaper to build than end-welded cover plates.
-
Corporate Authors:
University of Maryland, College Park
Department of Civil and Environmental Engineering
College Park, MD United States 20742Maryland Department of Transportation State Highway Administration
707 North Calvert Street
Baltimore, MD United States 21202 -
Authors:
- Albrecht, P
- Wattar, F
- Sahli, A
- Vannoy, D W
- Publication Date: 1982-7
Media Info
- Pagination: 195 p.
Subject/Index Terms
- TRT Terms: Alternatives analysis; Bolting; Bolts; Design; Fabrication; Fatigue (Mechanics); Girders; Metal bridges; Steel bridges; Structural plates; Welding
- Uncontrolled Terms: Fatigue life
- Old TRIS Terms: Cover plates; High strength bolts
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00474826
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: FHWA/MD-82/01
- Contract Numbers: AW082-232-046
- Files: TRIS, USDOT, STATEDOT
- Created Date: Oct 31 1987 12:00AM