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Filtering by: Creator Goerndt, Michael E. Remove constraint Creator: Goerndt, Michael E. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • 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:
    AN ABSTRACT OF THE THESIS OF Karryn E. Johnsohn for the

  • Accuracy assessment of LiDAR point cloud geo-referencing

    Creator:
    Williams, Keith E.
    Abstract:
    Three-dimensional laser scanning has revolutionized spatial data acquisition and can be completed from a variety of platforms including airborne (ALS), mobile (MLS), and static terrestrial (TLS) laser scanning. MLS is a rapidly evolving technology that provides increases in efficiency and safety over static TLS, while still providing similar levels of...
    Resource Type:
    Masters Thesis
    Full Text:
    from LiDAR AN ABSTRACT OF THE THESIS OF Keith E. Williams for the degree of Master of

  • An Efficient Workflow and Accuracy Assessment for ICESat-2 and Multispectral Imagery Fusion for Bathymetric Mapping

    Creator:
    Babbel, Benjamin J.
    Abstract:
    Interest in mapping bathymetry from multispectral satellite imagery has grown steadily since the 1970s. Notwithstanding the significant advancements made during this time, one limitation is that the group of algorithms collectively referred to as Satellite Derived Bathymetry (SDB) generally require “seed depths,” hindering their use for areas lacking reliable reference...
    Resource Type:
    Masters Thesis
    Full Text:
    Christopher E. Parrish Interest in mapping bathymetry from multispectral satellite imagery has grown

  • An Efficient Point Cloud Processing Framework for Terrestrial and Mobile Lidar Data via Reconstructing the Scan Pattern Grid

    Creator:
    Che, Erzhuo
    Abstract:
    Lidar (LIght Detection And Ranging) is a remote sensing technology using light in the form of a pulsed laser, which enables efficient, accurate, 3-D data acquisition of a scene. Depending on the mounting platform, lidar data acquisition can be categorized into Airborne Laser Scanning (ALS, or airborne lidar), Terrestrial Laser...
    Resource Type:
    Dissertation
    Full Text:
    Michael J. Olsen Lidar (LIght Detection And Ranging) is a remote sensing technology using light in

  • Nonlinear dynamic response of bottom-land deep ocean pipelines

    Creator:
    Zimmerman, Michael E.
    Abstract:
    A finite element formulation is developed for the prediction of the large displacement response of pipelines which are placed upon irregularly contoured marine sediments and are subsequently subjected to episodic hydrodynamic loads. The equations of motion during each episode of extreme wave activity are obtained from a variational form of...
    Resource Type:
    Masters Thesis
    Full Text:
    pipelines AN ABSTRACT OF THE THESIS OF Michael E. Zimmerman for the degree of Master of Science in Civil

  • Of Planes and Plumblines: Map Projections and Differential Leveling in a GNSS-based 3D Geodetic Framework

    Creator:
    Dennis, Michael L.
    Abstract:
    Modern geospatial data are frequently represented in some type of three-dimensional (3D) coordinate system, for example geodetic latitude, longitude, and ellipsoid height (φ, λ, h) derived from Global Navigation Satellite Systems (GNSS). But for engineering and surveying work, φ, λ, h coordinates are usually converted to a topocentric system consisting...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Michael Lamar

  • 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:
    ABSTRACT OF THE THESIS OF Michael W. Baillie for the degree of Master of Science in Civil Engineering

  • Finite element modeling of gusset plate failure using OpenSees

    Creator:
    Walker, Andrew J.
    Abstract:
    The collapse of the I-35W Bridge in Minneapolis, MN in 2007 prompted an investigation into the design and inspection of the steel truss bridges. Further investigation into the collapse revealed that a gusset plate experienced sway buckling, causing the bridge failure. This bridge failure motivated research into the analysis and...
    Resource Type:
    Masters Thesis
    Full Text:
    Element Modeling of Gusset Plate Failure Using Opensees Abstract approved: Michael H. Scott

  • 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

  • Numerical Characterization and Modeling Uncertainty of Frame-Spine and Frame-Spine-FLC Full-Scale Specimens Tested at E-Defense Shake-Table

    Creator:
    Astudillo, Bryam
    Abstract:
    The characterization of the seismic performance of structures relies on numerical simulations. However, estimates of seismic response are subject to various sources of uncertainty, including modeling uncertainty. This research estimated the response of two full-scale structural specimens composed of a moment resisting frame, elastic spines, and force-limiting connections (FLC), which...
    Resource Type:
    Masters Thesis
    Full Text:
    -Scale Specimens Tested at E-Defense Shake-Table. Abstract approved