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2019

Civil Engineering Graduate Theses & Dissertations

Centrifuge modeling

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Full-Text Articles in Engineering

Performance Of Inelastic Structures On Mitigated And Unmitigated Liquefiable Soils: Evaluation Of Numerical Simulations With Centrifuge Tests, Jenny Zulay Ramirez Calderon Jan 2019

Performance Of Inelastic Structures On Mitigated And Unmitigated Liquefiable Soils: Evaluation Of Numerical Simulations With Centrifuge Tests, Jenny Zulay Ramirez Calderon

Civil Engineering Graduate Theses & Dissertations

A series of dynamic centrifuge experiments involving soil-foundation-mitigation-structure (SFMS) interaction on liquefiable soils are used to evaluate the ability of state-of-the-art numerical modeling in reliably predicting system performance (e.g., in terms of foundation settlement, rotation, roof accelerations, and column strains). This research comprises of two major components: (1) calibration and validation of two soil constitutive models with a series of fully drained and undrained, monotonic and cyclic, triaxial tests as well as a free-field centrifuge test on a layered, liquefiable soil deposit (without a building or a mitigation technique); and (2) numerical simulation of centrifuge tests that include multi-degree-of-freedom ...


Centrifuge Modeling Of Dense Granular Columns In Layered Liquefiable Soils With Varying Stratigraphy And Overlying Structures, Mahir A. Badanagki Jan 2019

Centrifuge Modeling Of Dense Granular Columns In Layered Liquefiable Soils With Varying Stratigraphy And Overlying Structures, Mahir A. Badanagki

Civil Engineering Graduate Theses & Dissertations

Soil liquefaction and ground failure have been a major source of damage to slopes, embankments, and structures during previous earthquakes. The risk of liquefaction and associated ground deformations can be reduced by various forms of improvement, including the granular column technique. Granular columns are known to be cost effective and environmentally friendly, and they have been in use since the 1970’s to mitigate the liquefaction hazard. Granular columns mitigate the consequences of soil liquefaction through a combination of: 1) installation-induced ground densification, 2) increase in lateral effective stresses in the surrounding soil, 3) increase in shear stiffness, and 4 ...