Long Life Fatigue Behavior of Welded Steel-Bridge Girder Detailsby William Wright, Turner-Fairbank Highway Research, Cent, McLean, United States,
Abstract: The Federal Highway Administration is nearing completion of a five year, 1.5 million dollar effort titled 'Variable Amplitude Load Fatigue' to investigate the behavior of welded bridge details under long life, variable amplitude loading. This effort is a combination of contract research with the Universities of Pittsburgh, Maryland, and staff research at the Turner-Fairbank Highway Research Center. Both small specimen and full scale fatigue tests are being performed under variable amplitude loading at stress ranges below the constant amplitude fatigue limit. This paper presents an overview of the project and the preliminary results of the testing program.
Subject Headings: Welding | Girder bridges | Highway bridges | Steel bridges | Fatigue tests | Girders | Steel | Steel beams | Lifeline systems | Fatigue life | Bridge tests | Load factors | North America | United States | Pennsylvania | Pittsburgh | Maryland
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