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  • An investigation of Oregon weight-in-motion data for bridge rating implementation and evaluation

    Creator:
    Pelphrey, Jordan Michael
    Abstract:
    The LRFR Manual, within commentary Article C6.4.4.2.3, contains provisions for development of site-specific live load factors. In Oregon, truck Weigh-in-Motion (WIM) data were used to develop live load factors for use on state-owned bridges. The factors were calibrated using the same statistical methods that were used in the original development...
    Resource Type:
    Masters Thesis
    Full Text:
    -specific live load factors. In Oregon, truck Weigh-in-Motion (WIM) data were used to develop live load

  • Reliability based bridge assessment using modified compression field theory and Oregon specific truck loading

    Creator:
    Daniels, Theresa Kathryn
    Abstract:
    Assessment of an existing bridge is needed when the structure exhibits signs of distress. Assessment practices require refinement in the calculation of loading and resistance while maintaining an acceptable level of risk, to minimize costs associated with repair, replacement and weight restrictions. Previous risk-based assessments evaluated the strength cases for...
    Resource Type:
    Masters Thesis

  • Analysis of conventionally reinforced concrete deck girder bridges for shear

    Creator:
    Potisuk, Tanarat
    Abstract:
    Large numbers of 1950's vintage conventionally reinforced concrete (CRC) bridges remain in-service in the national bridge inventory. Many of these bridges are lightly reinforced for shear. Evaluation of these bridges to prevent unnecessary and costly repairs requires refined analytical techniques. This dissertation presents finite element (FE) modeling and comparisons of...
    Resource Type:
    Dissertation
    Full Text:
    . In addition to bridge self weight, investigation of live-load effects to girders are needed for

  • 3-D finite element modeling in OpenSees for bridge live-load girder distribution factors

    Creator:
    Scoggins, Luke A.
    Abstract:
    A generalized, three-dimensional, finite element bridge model was created in order to efficiently and accurately assess live-load girder distribution factors for a variety of bridge types. This model shortens the time required by bridge analysts to develop individual finite element models for bridges of varying geometries. The creation of the...
    Resource Type:
    Masters Thesis
    Full Text:
    22, 2007. Title: 3-D Finite Element Modeling in OpenSees for Bridge Live-Load Girder Distribution

  • New acoustic emission applications in civil engineering

    Creator:
    Schumacher, Thomas
    Abstract:
    Non-destructive testing methods and applications have become of increasing interest due to the worldwide aging and deteriorating infrastructure network. In the field of Civil Engineering, bridges and bridge components as well as non-structural elements such as roadway pavements for example, are affected. In particular, the Acoustic Emission (AE) technique offers...
    Resource Type:
    Dissertation
    Full Text:
    enforcing legal dates for the use of studded tires. Load conditions of two full- scale laboratory bridge

  • Design, analysis and evaluation of bridge superstructures for live loads

    Creator:
    Turan, O. Tugrul
    Abstract:
    Due to age, original design that is deficient by modern standards, inadequate maintenance, environmental conditions, and increasing loads, large numbers of bridges in United States and elsewhere are classified as deficient and in need of rehabilitation or replacement. According to a national bridge inventory established by the Federal Highway Administration,...
    Resource Type:
    Dissertation
    Full Text:
    . Title: Design, Analysis and Evaluation of Bridge Superstructures for Live Loads. Abstract