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

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/h128nj07d

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  • 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 varying water contents according to the effective stress framework. A closed-form solution has been proposed for the bearing capacity equation that modifies the overburden, unit weight, and cohesion terms in the conventional equation. The 𝛽-method has been modified to consider suction stresses along the deep foundation and a reduction in K₀ due to tension cracking near the surface. The modified bearing capacity equation for shallow foundations shows good agreement to load-tests performed in partially saturated soils. Monte Carlo simulations were performed on silt loams, sands, and clays to characterize variance and distribution of bearing capacity. The results show that silts have the largest variance while clays have the smallest variance in predicted bearing capacity.
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  • description.provenance : Made available in DSpace on 2016-06-24T22:58:37Z (GMT). No. of bitstreams: 2 license_rdf: 1223 bytes, checksum: d127a3413712d6c6e962d5d436c463fc (MD5) BakerJosiahD2017.pdf: 5176403 bytes, checksum: bc57667ac6384e6265f1ade7c4fc29d4 (MD5) Previous issue date: 2016-06-02
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2016-06-24T22:58:37Z (GMT) No. of bitstreams: 2 license_rdf: 1223 bytes, checksum: d127a3413712d6c6e962d5d436c463fc (MD5) BakerJosiahD2017.pdf: 5176403 bytes, checksum: bc57667ac6384e6265f1ade7c4fc29d4 (MD5)
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