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    Analytical and Experimental Investigation for Distortion-Induced Fatigue in Steel Bridges

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    Hartman_ku_0099D_12870_DATA_1.pdf (32.70Mb)
    Issue Date
    2013-08-31
    Author
    Hartman, Amanda
    Publisher
    University of Kansas
    Format
    281 pages
    Type
    Dissertation
    Degree Level
    Ph.D.
    Discipline
    Civil, Environmental, & Architectural Engineering
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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    Abstract
    Distortion-induced fatigue has been extensively studied; however, retrofit techniques currently used are expensive and/or time consuming to implement. These retrofit techniques primarily fall into two categories--stiffening or softening the weak web-gap region. The University of Kansas has developed an innovative stiffening technique that is economical to implement. This technique requires two angles providing attachment between the connection plate and girder web with a plate placed on the other side of the web to distribute out-of-plane forces (called angles-with-plate retrofit). Another appealing aspect of the angles-with-plate retrofit is the minimal traffic disruption required during retrofit application. Through analytical and experimental testing, the angles-with-plate retrofit has been shown to be effective in halting or slowing distortion-induced fatigue crack growth. This dissertation is divided into five parts and appendices. The first two parts are an analytical investigation of parameters influencing distortion-induced fatigue and current retrofit techniques on a full-scale bridge in Abaqus. Parts 3-5 are analytical and experimental investigations of the angles-with-plate retrofit on a 9.1 m [30 ft.] test bridge. Each part within the document contains particular formatting associated with published or expected publishing requirements. Part 1: Effects of Lateral Bracing Placement and Skew on Distortion-Induced Fatigue Part 2: Distortion-Induced Fatigue in Steel Bridges: Causes, Parameters, and Fixes Part 3: Experimental Investigation of Distortion-Induced Fatigue Repair in a 9.1 m [30 ft.] Bridge System Part 4: Parametric Retrofit Analysis for Distortion-Induced Fatigue in a 9.1 m [30 ft.] Bridge System Part 5: Innovative Retrofit Technique for Distortion-Induced Fatigue Cracks in Steel Girder Web Gaps
    URI
    http://hdl.handle.net/1808/12161
    Collections
    • Dissertations [4454]
    • Engineering Dissertations and Theses [1055]

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
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    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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