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Filtering by: Creator DeDen, F. Michael Remove constraint Creator: DeDen, F. Michael Academic Affiliation Civil and Construction Engineering Remove constraint Academic Affiliation: Civil and Construction Engineering License All rights reserved Remove constraint License: All rights reserved

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  • Response Sensitivity Formulations for Geometrically Nonlinear Finite Element Analysis

    Creator:
    Al-Aukaily, Alabbas
    Abstract:
    Significant amounts of uncertainty owing to both modeling decisions and inherent randomness are present in simulating the material and geometric nonlinear response of structural systems to extreme loading. Computing the sensitivity of structural response with respect to model parameters indicates which parameters have the largest affect on the response, which...
    Resource Type:
    Dissertation
    Full Text:
    Sensitivity Formulations for Geometrically Nonlinear Finite Element Analysis Abstract approved: Michael H

  • Bridge Model Parameter Sensitivity in Pushover and Nonlinear Time History Analysis

    Creator:
    Johnsohn, Karryn E.
    Abstract:
    The aim of this research is to understand and quantify the modeling differences between CSiBridge and OpenSees, and to determine sensitive model parameters. When designing bridges for the high seismic region of California, the California Department of Transportation (Caltrans) performs nonlinear time history analysis of their bridge models. For three-dimensional...
    Resource Type:
    Masters Thesis
    Full Text:
    Parameter Sensitivity in Pushover and Nonlinear Time History Analysis Abstract approved: Michael H. Scott

  • Evaluation of alternative information signs in Oregon

    Creator:
    Neill, Justin Michael
    Abstract:
    The number of international inbound tourists to the United States has risen steadily. To serve these and other tourists best, traffic signs need to communicate information correctly across a potential language barrier. Of particular interest is the traffic sign intended to communicate directions to Tourist Information centers. While the general...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Justin Michael Neill for the degree of Master of Science in Civil

  • Remote Sensing Tools for Evaluating Climate Change Impacts in Coastal Environments

    Creator:
    Herrmann, Joan F.
    Abstract:
    Climate change has pervasive impacts on Earth’s diverse ecosystems. Observed and projected effects that impact coastal environments pose unique challenges. Coastal regions provide numerous ecosystem services (e.g., fisheries, nursery habitats, erosion control, and water filtering and detoxification), house 40% of the US population, and contribute to 58% of the national...
    Resource Type:
    Masters Thesis
    Full Text:
    patience over the last years. Additionally, to the rest of the defense committee, Dr. Michael Olsen, Dr

  • Fluid-structure interaction analysis with the particle finite element method

    Creator:
    Zhu, Minjie
    Abstract:
    To facilitate the evaluation and design of structures subjected to fluid loading, a study of fluid-structure interaction (FSI) using the particle finite element method (PFEM) is presented to approximate the responses and sensitivities of structures which interact with fluid. A wide range of structural types are permissible by making no...
    Resource Type:
    Dissertation
    Full Text:
    analysis with the particle finite element method Abstract approved: Michael H. Scott To facilitate

  • Probabilistic Geospatial Analyses, Uncertainty Modeling, and Mapping of Seismically-induced Ground Failures

    Creator:
    Sharifi Mood, Mahyar
    Abstract:
    Ground failures, in particular landsliding, liquefaction and lateral spreading can be triggered by seismic sources. The frequency, magnitude, and impact of these ground failures are highly dependent on the topography and geology of the site including its slope, depositional environment, and geotechnical properties as well as the proximity of the...
    Resource Type:
    Dissertation
    Full Text:
    : ________________________________________________________________________________________ Michael J. Olsen Daniel T

  • Assessing Seismic Rockfall Impacts on Mobility in Transportation Corridors

    Creator:
    Holtan, Katherine
    Abstract:
    The climate and geologic conditions of the Pacific Northwest leaves its roads highly susceptible to rockfall hazards. Rockfalls often occur on steep slopes that experience heavy rainfall, groundwater seepage, or strong shaking from earthquakes. The unpredictable nature of these events often creates substantial problems for communities, transportation infrastructure, and the...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ________________________________________________________ Michael J. Olsen

  • Evaluation of straw wattle placement and surficial slope stability

    Creator:
    Rikli, Anthony M.
    Abstract:
    Straw wattles are common erosion control devices used to trap sediment. This thesis studies the relationship of straw wattles on slope stability through a case study demonstrating their use on steep slopes (1.5H:1V) for the US20 highway realignment project. Several surficial slope failures have occurred on these fill slopes, often...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: Michael J. Olsen Straw wattles are common erosion control devices used to trap

  • Tsunami Loading on Coastal Infrastructure

    Creator:
    Xie, Zhongliang
    Abstract:
    The safety of coastal infrastructure has been a concern after the Indian Ocean Tsunami in 2004 and the Great East Japan Tsunami in 2011. The western coast of the United States is also exposed to tsunami hazards due to the Cascadia subduction zone. Therefore, it is critical to design coastal...
    Resource Type:
    Dissertation
    Full Text:
    Coastal Infrastructure Abstract approved: Michael H. Scott The safety of coastal infrastructure has

  • Investigation of Multi-constellation RTK GNSS Survey Productivity and Coordinate Accuracy

    Creator:
    Jamieson, Marian H.
    Abstract:
    This study evaluates the productivity and accuracy of surveys completed with single-base real-time kinematic (RTK) Global Navigation Satellite Systems (GNSS) using four different GNSS constellation combinations: (1) GPS-only, (2) GPS+GLONASS, (3) GPS+Galileo+BeiDou, and (4) GPS+GLONASS+Galileo+BeiDou. For this comparison, we set up a test site consisting of 20 stations ranging with...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: _____________________________________________________ Michael J. Olsen This study