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Reliability-based analysis and design of strip footings against bearing capacity failure / Dalia S. Youssef Abdel Massih in Journal of geotechnical and geoenvironmental engineering, Vol. 134 N°7 (Juillet 2008) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°7 (Juillet 2008) . - pp. 917–928 Titre : Reliability-based analysis and design of strip footings against bearing capacity failure Type de document : texte imprimé Auteurs : Dalia S. Youssef Abdel Massih, Auteur ; Abdul-Hamid Soubra, Auteur ; Bak Kong Low, Auteur Année de publication : 2008 Article en page(s) : pp. 917–928 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Bearing  capacity  Earthquake  loads  Limit  analysis  Probability  Reliability  Shallow  foundations  Punching  Failure  loads Résumé : This paper presents a reliability-based approach for the analysis and design of a shallow strip footing subjected to a vertical load with or without pseudostatic seismic loading. Only the punching failure mode of the ultimate limit state is studied. The deterministic models are based on the upper-bound method of the limit analysis theory. The random variables used are the soil shear strength parameters and the horizontal seismic coefficient. The Hasofer-Lind reliability index and the failure probability are determined. A sensitivity analysis is also performed. The influence of the applied footing load on the reliability index and the corresponding design point is presented and discussed. It was shown that the negative correlation between the soil shear strength parameters highly increases the reliability of the foundation and that the failure probability is highly influenced by the coefficient of variation of the angle of internal friction of the soil and the horizontal seismic coefficient. For design, an iterative procedure is performed to determine the breadth of the footing for a target failure probability. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A7%2891 [...] [article] Reliability-based analysis and design of strip footings against bearing capacity failure [texte imprimé] / Dalia S. Youssef Abdel Massih, Auteur ; Abdul-Hamid Soubra, Auteur ; Bak Kong Low, Auteur . - 2008 . - pp. 917–928. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°7 (Juillet 2008) . - pp. 917–928 Mots-clés : Bearing  capacity  Earthquake  loads  Limit  analysis  Probability  Reliability  Shallow  foundations  Punching  Failure  loads Résumé : This paper presents a reliability-based approach for the analysis and design of a shallow strip footing subjected to a vertical load with or without pseudostatic seismic loading. Only the punching failure mode of the ultimate limit state is studied. The deterministic models are based on the upper-bound method of the limit analysis theory. The random variables used are the soil shear strength parameters and the horizontal seismic coefficient. The Hasofer-Lind reliability index and the failure probability are determined. A sensitivity analysis is also performed. The influence of the applied footing load on the reliability index and the corresponding design point is presented and discussed. It was shown that the negative correlation between the soil shear strength parameters highly increases the reliability of the foundation and that the failure probability is highly influenced by the coefficient of variation of the angle of internal friction of the soil and the horizontal seismic coefficient. For design, an iterative procedure is performed to determine the breadth of the footing for a target failure probability. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A7%2891 [...]