Graduate Thesis Or Dissertation

 

Dynamic Eccentric Response of a Circular Footing on a Sand Stratum by Physical Modeling Public Deposited

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https://scholar.colorado.edu/concern/graduate_thesis_or_dissertations/7w62f856p
Abstract
  • Due to the stress dependent nature of the material properties of soil, it can be difficult to find a comprehensive approximate method that captures all features of the response of a structure or foundation under dynamic loading. For this reason, a fundamental problem in soil-structure interaction was investigated, both experimentally by means of centrifuge modeling, and computationally using boundary element methods. The problem consisted of a circular surface foundation resting on a soil stratum, subjected to random loading applied at a vertically eccentric location on the upper surface of the footing. The experimental data was compared with computational results for two soil material models: A soil with an equivalent homogeneous shear modulus, and a two-zone soil model that more directly accounts for the stress dependence of the soil’s material properties. The two-zone model represents the far-field using a shear modulus that has square root dependence with depth, and a local homogeneous zone directly underneath the footing. Computational and experimental results were also compared with a previous study involving square footings on a soil stratum, having contact pressures equal to the circular footings in this report.
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  • 2011
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  • 2019-11-18
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