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  • Scourability of weak rock in the Oregon Coast Range

    Creator:
    Baillie, Michael W.
    Abstract:
    The undermining of bridge foundations can lead to either costly repairs or a bridge collapse. These foundations must be designed to counter the effects of scour. Current practice does not allow for accurate estimates of scour in erodible rock. Scour in rock can be related to geotechnical and hydraulic properties....
    Resource Type:
    Masters Thesis
    Full Text:
    and improvement of the state-of-practice of bridge design and scour, and implemented a comprehensive

  • Bridge design elements of flat chord trusses

    Creator:
    Miller, Olin R.
    Resource Type:
    Undergraduate Thesis
    Full Text:
    . Construction and Design 39 IX A. Floor Systems 39 IX B. Truss Design 42 Appendix 46 TABLE OF CONTENTS

  • Tsunami and hurricane wave loads on bridge superstructures

    Creator:
    Azadbakht, Mohsen
    Abstract:
    This dissertation examines tsunami and hurricane wave loads on bridge superstructures. Tsunamis have caused significant damage to coastal communities in recent years. For example, the 2011 Great East Japan Earthquake and resulting Tohoku Tsunami destroyed infrastructure along the east coast of Japan including bridge superstructures. Recent hurricanes have also caused...
    Resource Type:
    Dissertation
    Full Text:
    first seaward bridge girder. A design procedure is proposed to compute maximum horizontal and vertical

  • A torsional investigation of a concrete I grider

    Creator:
    Martin, Roy Charles
    Abstract:
    This paper investigates a particular bridge construction technique which could result in a significant torsional moment. The structural member under consideration is a prestressed concrete girder for which no torsional consideration is made. Torsional shear stresses can be adequately approximated for an I-shaped girder. Laboratory model tests were performed to...
    Resource Type:
    Masters Thesis
    Full Text:
    torsion tests on prestressed concrete I-beam. In: Bridge deck design and loading studies. Highway Research

  • Behavior of open grid steel bridge decks under service and fatigue loads

    Creator:
    Fetzer, Peter C.
    Abstract:
    Open grid steel bridge decks have been in use for nearly a century. These open grid decks provide an economical and lightweight alternative to traditional reinforced concrete decks. As the transportation infrastructure continues to deteriorate, open grid decks can be used as a cost effective way to rehabilitate structurally deficient...
    Resource Type:
    Masters Thesis
    Full Text:
    evolving and increasing live load demands. While modern bridge design specifications continue to evolve

  • 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:
    State Highway and Transportation Officials (AASHTO). (2003). LRFD bridge design specifications, 2nd Ed

  • Experimental research on the behavior and strength of large-scale steel gusset plates with sway-buckling response including effects of corrosion and retrofit options

    Creator:
    Hafner, Anthony G.
    Abstract:
    The collapse of the I-35W Bridge in Minneapolis, MN on August 1, 2007 brought into question the design and inspection of gusset plates in steel truss bridges. The experimental tests performed in this research study the sway-buckling strength and behavior of large-scale steel gusset plates in an isolated truss connection....
    Resource Type:
    Masters Thesis
    Full Text:
    application of available design methods for evaluation of large-sized truss bridge gusset plates and the

  • Testing and evaluation of flexural reinforcing bars terminating in columns

    Creator:
    Koester, Carl C.
    Abstract:
    Capacity of transverse 1950's vintage reinforced concrete deck girder bridge bent caps with large straight bar anchorages were investigated and evaluated. Eleven subassemblage column specimens were examined with different anchorage lengths, bar groupings, amount of transverse steel, and externally applied axial force. Test results showed an increase in anchorage capacity...
    Resource Type:
    Masters Thesis
    Full Text:
    compared with contemporary bridge and building design specifications which do not currently account for

  • Parametric uncertainties in reliability analysis of bridge structures

    Creator:
    Hamutcuoglu, Osman Murat
    Abstract:
    Probability-based reliability methods have placed an increased emphasis on realistic simulation of structural behavior in bridge engineering. Uncertainty is present in every aspect of structural analysis. Aleatory uncertainties in the loading and load-carrying capacities, and epistemic uncertainties in mathematical idealization of bridge systems are the major contributors to uncertain structural...
    Resource Type:
    Dissertation
    Full Text:
    current generation of structural design codes. American Institute of Steel Construction Load and Re- 2

  • Large-scale laboratory observations of wave forces on a highway bridge superstructure

    Creator:
    Bradner, Christopher
    Abstract:
    The experimental setup and data are presented for a laboratory experiment conducted to examine realistic wave forcing on a highway bridge superstructure. The experiments measure wave conditions along with the resulting forces, pressures, and structural response of a 1:5 scale, reinforced concrete model of a typical section of the I-10...
    Resource Type:
    Masters Thesis
    Full Text:
    Schumacher, a Ph.D. candidate at Oregon State University performed the majority of the design and