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Filtering by: Contributor Evans, D. L. Remove constraint Contributor: Evans, D. L. Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Unsaturated Soils and Foundation Design : Theoretical Considerations for an Effective Stress Framework

    Creator:
    Baker, Josiah D.
    Abstract:
    This study presents the theoretical background necessary to model the bearing capacity of shallow and deep foundations in partially saturated soils. The conventional bearing capacity equations for shallow and deep foundations and the 𝛽-method for deep foundation side resistance have been modified to include the effects of matric suction and...
    Resource Type:
    Masters Thesis
    Full Text:
    greater than or equal to the embedded depth of the footing D. The length of the footing L is greater

  • Properties of marginal aggregates treated with asphalt emulsion

    Creator:
    Evans, Gary L.
    Abstract:
    The purpose of this report is to address the problem of supplying construction aggregates to Oregon's coastal areas that are currently, or will in the near future, be deficient of good quality materials. This is done primarily by studying methods of utilizing marginal aggregates that are abundantly available in the...
    Resource Type:
    Masters Thesis
    Full Text:
    with Asphalt Emulsion by Gary L. Evans A THESIS submitted to Oregon State University in partial

  • A Numerical Investigation of the Bearing Capacity of Shallow Foundations on Salt-Encrusted Flat Sabkha

    Creator:
    Refaei, Raied
    Abstract:
    Salt-encrusted flats, or Sabkha, are common in arid and semi-arid regions worldwide, including coastal and inland areas. Due to their low shear strength and high compressibility, these soils are often unsuitable for supporting infrastructure or structures. The unique salt content of sabkha formations sets them apart from other soil types....
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: ______________________________________________________ T. Matthew Evans

  • GOSEP: Georeferenced Oregon Soil Engineering Properties

    Creator:
    Dutille, Victoria L.
    Abstract:
    Geotechnical engineers design and analyze the interface between the natural and built environments, often based on uncertain and inherently variable data due to the nature of the building material, soil. Engineers must estimate the subsurface conditions at a site using historical, in-situ, and laboratory testing data. However, only discrete representative...
    Resource Type:
    Capstone Project
    Full Text:
    : ______________________________________________________ Dr. T. Matthew Evans and Dr. Armin Stuedlein Geotechnical engineers design and analyze the

  • Numerical Simulations and Microscale Analyses of Offshore Anchor-Granular Material Systems

    Creator:
    Zhang, Nan
    Abstract:
    Anchoring systems are used to hold floating offshore devices (e.g., energy devices, oil platforms) to keep them on their stations. Anchors are embedded into the seabed soils. In some cases, the interface shear between anchor and seabed soils together with anchor self-weight provide the holding capacity of the anchoring systems....
    Resource Type:
    Dissertation
    Full Text:
    approved: ______________________________________________________ T. Matthew Evans Anchoring systems

  • Behavioral thresholds in mixtures of sand and clay

    Creator:
    Simpson, Daniel Corder
    Abstract:
    Nearly all soils are comprised of mixtures of coarse and fine particles. Behavior under mechanical and thermal loading of soil is strongly influenced (and in some cases, governed) by the ratio of coarse to fine particles. A better understanding of the fundamental behavior of soil mixtures will provide insight to...
    Resource Type:
    Masters Thesis
    Full Text:
    Title: Behavioral Thresholds in Mixtures of Sand and Clay Abstract approved: T. Matthew Evans

  • Engineering Behavior of Remolded Diatomaceous Silts

    Creator:
    Pitso, Talenta
    Abstract:
    Diatomaceous soils are a geological material whose engineering properties do not readily conform to the widely accepted and used mechanical and behavioral frameworks. This ambiguity results in design difficulties and geotechnical failures which can be costly. Diatomaceous soils have diatoms in their matrix. Diatoms are unicellular algae with an inert...
    Resource Type:
    Capstone Project
    Full Text:
    my sincerest appreciation and gratitude to my advisor, Dr. Matt Evans, for his endless

  • A New Bonding Model for the Particulate Simulation of Bio-Cemented Sand (with a Side Excursion on Percolation in Granular Mixtures)

    Creator:
    Khoubani, Ali
    Abstract:
    Bio-cementation is a promising method for the liquefiable mitigation of loose saturated sands. In the improvement process a bacterium that can be found naturally in soil deposits is fed urea. The bacterium consumes and breaks down the urea to form ammonium and carbonate. In the presence of calcium, calcium carbonate...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ T. Matthew Evans Bio-cementation is a promising method for the liquefiable mitigation of

  • Stiffness matrix analysis of structures by electronic digital computer

    Creator:
    Serpanos, James Evan
    Resource Type:
    Masters Thesis
    Full Text:
    Digital Computer AN ABSTRACT OF THE THESIS OF James Evan Serpanos for the M. S. in Structural

  • Hydrodynamic loads on fiber-optic micro cables

    Creator:
    Evans, Matthew R.
    Abstract:
    A Finite Element Model of a deployed Fiber-Optic Micro Cable (FOMC) was performed using the marine cable modeling software, OrcaFlex. The focus of this study was a parametric analysis of a two-part, towed cable array with the FOMC dragged behind a depressor and connected to a drogue chute. Length-to-diameter ratios...
    Resource Type:
    Capstone Project
    Full Text:
    hand, the L/D ratio is 2x106 for the smallest diameter considered, where L is the cable length