FATIGUE PROBLEMS IN HIGHWAY BRIDGES
During the past few years there has been an increasing incidence of fatigue cracking in the welded joints of modern steel bridges. Many examples have occurred in welds on main girders of short or medium span highway bridges having concrete decks, and in welded joints in orthotropic steel decks of temporary bridges and long span bridges. Design of British bridges is checked for lives of 120 years involving up to 7.10 to the 8th power cycles of stress. Calculations to assess fatigue require a realistic loading spectrum, reliable methods to obtain local stresses, and relevant S/N relationships between stresses and numbers of cycles to failure. This paper briefly describes some of the recent research to improve the background to these three steps for design of bridges, particularly those having orthotropic steel decks. The research includes investigation of the influence of surfacing, type of stress cycle, residual stress, plate thickness, cyclic frequency, rest-periods, weathering and consideration of programmed loading. /Author/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309026962
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Supplemental Notes:
- This paper appeared in Transportation Research Record No. 664, Bridge Engineering, Volume 1. Proceedings of a conference conducted by the Transportation Research Board, September 25-27, 1978. 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
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Authors:
- TILLY, G P
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Conference:
- Bridge Engineering Conference, 1st, 1978, St Louis, Missouri, USA
- Location: St Louis Missouri, United States
- Date: 1978-9-25 to 1978-9-28
- Publication Date: 1978
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 93-101
- Monograph Title: Bridge Engineering. Volume 1
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Serial:
- Transportation Research Record
- Issue Number: 664
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Bridge decks; Failure; Fatigue (Mechanics); Fracture mechanics; Girders; Highway bridges; Joints; Metal bridges; Orthotropic; Steel bridges; Stresses
- Old TRIS Terms: Joint
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 00183752
- Record Type: Publication
- ISBN: 0309026962
- Files: TRIS, TRB
- Created Date: Dec 3 1978 12:00AM