dc.contributor.author Naghibi, Mehrangiz dc.date.accessioned 2010-04-20T13:35:16Z dc.date.available 2010-04-20T13:35:16Z dc.date.issued 2010-04-20T13:35:16Z dc.identifier.uri http://hdl.handle.net/10222/12776 dc.description.abstract For many years, engineers have designed foundations, walls and culverts for highway and en_US other geotechnical applications using allowable stress design (ASD) methods. In ASD, all uncertainties in the load and resistance are combined into a global factor of safety which, unfortunately, leads to uncertain safety margins in the design. The determination of system failure probability requires a coherent method of design for the geotechnical system. The Load and Resistance Factor Design (LRFD) approach allows designs to be targeted to acceptable failure probability levels, which depend on the limit state being avoided. This research proposes Load and Resistance Factor Design provisions for the ultimate limit state punching shear failure of deep foundations. The load factors currently used are as specified by the National Building Code of Canada. The geotechnical resistance factors required to achieve a certain acceptable failure probability are estimated as a function of the spatial variability of the soil and of the degree of site understanding. A mathematical theory is developed to analytically estimate the failure probability of deep foundations in which the spatially random soil field is modeled using random field theory. The analytical results are validated by simulation and then used to estimate failure probabilities and geotechnical resistance factors required for design. dc.language.iso en en_US dc.title Geotechnical Resistance Factors for Ultimate Limit State Design of Deep Foundations Under Axial Compression Loading en_US dc.date.defence 2010-03-26 dc.contributor.department Department of Engineering Mathematics en_US dc.contributor.degree Doctor of Philosophy en_US dc.contributor.external-examiner Dr. Dennis E. Becker en_US dc.contributor.graduate-coordinator Dr. Guy Kember en_US dc.contributor.thesis-reader Dr. Craig B. Lake en_US dc.contributor.thesis-reader Dr. Serguei Iakovlev en_US dc.contributor.thesis-supervisor Dr. Gordon A. Fenton en_US dc.contributor.ethics-approval Not Applicable en_US
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