Search Constraints

Start Over
Filtering by: Has journal Plant and Soil Remove constraint Has journal: Plant and Soil Committee Member Leshchinsky, Ben Remove constraint Committee Member: Leshchinsky, Ben Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

Search Results

  • Static and cyclic response of ecoroof soil

    Creator:
    Kraupa, Travis J.
    Abstract:
    Green technology in the United States has been on the rise over the past few decades in the United States. However, certain green technologies have been developed in the absence of design standards. Ecoroofs, which are vegetated soil masses placed on the top of a building’s roof structure, present several...
    Resource Type:
    Masters Thesis
    Full Text:
    Static and Cyclic Response of Ecoroof Soil

  • A Full-Scale Experimental Investigation of the Bearing Performance of Aggregate Pier-Supported Shallow Foundations

    Creator:
    Martin, John P.
    Abstract:
    Aggregate piers have been used for centuries, with increasing occurrence in the last few decades. Their usage has been driven by land development demand and enabled through equipment and engineering improvements. Understanding the principles controlling bearing capacities and serviceability performance has been an ongoing area of interest for structures supported...
    Resource Type:
    Masters Thesis
    Full Text:
    with site specific soil conditions and variations in aggregate gradations and sources have led to

  • Characterization of reinforced fill soil, soil-reinforcement interaction, and internal stability of very tall MSE walls

    Creator:
    Walters, James J.
    Abstract:
    In many geotechnical design situations involving tight right-of-way constraints, Mechanically Stabilized Earth (MSE) walls are often the most cost-effective and reliable earth retention technology among available alternatives. However, few well-documented case histories with detailed material testing, instrumentation programs and construction observation of performance are available in the literature. Despite the...
    Resource Type:
    Masters Thesis
    Full Text:
    constitutive behavior of a sandy gravel backfill soil and ribbed steel strip reinforcement material used in

  • Evaluation of the Performance of Lateral Spread Displacement Empirical Models for Subduction Zone Earthquake Case Histories

    Creator:
    Bunn, Michael
    Abstract:
    Lateral spread is a pervasive type of liquefaction-induced ground failure that occurs on gentle slopes or near free-faces, such as river channels. Resulting horizontal displacements can reach up to several meters, and can be considerably damaging to foundations, bridges, roadways, pipelines, etc. In the 1990s, Bartlett and Youd (1992a, 1995)...
    Resource Type:
    Masters Thesis
    Full Text:
    of the soil, causing the soil to lose shearing resistance and behave more like a liquid. When

  • Use of Controlled Blasting to Quantify the Dynamic, In-Situ, Nonlinear Inelastic Response of Soils

    Creator:
    Jana, Amalesh
    Abstract:
    The seismic response of deep deposits of liquefiable and cyclic-softening susceptible soils has presented the geotechnical profession with significant engineering challenges. Strong ground motions may serve to soften soils under cyclic shear, trigger liquefaction, and produce damaging displacements as a consequence. This study improves the understanding of the in-situ, nonlinear,...
    Resource Type:
    Dissertation
    Full Text:
    unloading of the initial compression wave were found to control the soil response, and were

  • Characterization of the Small-Strain Stiffness of Soils at an In-situ Liquefaction Test Site

    Creator:
    Donaldson, Aleyna M.
    Abstract:
    Strong ground motions from earthquakes can result in the reduction of the shear modulus and wave propagation characteristics of soils, and can produce liquefaction and cyclic softening during shaking and for some time following the seismic event. While the ground motions produced from controlled blasting are different than those in...
    Resource Type:
    Masters Thesis
    Full Text:
    their stiffness, and this parameter can vary with both stress and soil fabric. Shear wave velocity can

  • Direct Shear Interface Friction and Linear Motion Shaking Response of Ecoroofs

    Creator:
    Kilroy, Kimberly A.
    Abstract:
    Ecoroofs have become more prominent in recent years. However, there is currently no enforceable standard or building code for the design and construction of ecoroofs across the United States (Kraupa, 2014). Further research is needed to determine how ecoroofs respond to roof motion and to develop an appropriate design standard.The...
    Resource Type:
    Masters Thesis
    Full Text:
    layer of the ecoroof. The interfaces were tested under both dry and submerged conditions for soil

  • Investigation of Drilled Shafts under Axial, Lateral, and Torsional Loading

    Creator:
    Li, Qiang
    Abstract:
    Drilled shaft foundations provide significant geotechnical resistance for support of structures, such as highway bridges, traffic sign, and signal pole structures, and are used widely to meet their structural foundation requirements. The amount of steel reinforcement in drilled shaft foundations has increased over the past several decades to account for...
    Resource Type:
    Dissertation
    Date Created:
    Full Text:
    studies illustrated the significant effect of nonlinear soil responses and nonlinear structural response

  • 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:
    the salt content of the soil and its geotechnical properties. Notably, the coastal sabkha exhibited

  • 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:
    the anchor-soil responses. The discrete element method (DEM) and digital image processing (DIP) can