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Load resistance factor design of axially loaded pile based on load test results / Sumanta Haldar in Journal of geotechnical and geoenvironmental engineering, Vol. 134 n°8 (Août 2008) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 134 n°8 (Août 2008) . - pp. 1106–1117 Titre : Load resistance factor design of axially loaded pile based on load test results Type de document : texte imprimé Auteurs : Sumanta Haldar, Auteur ; G. L. Sivakumar Babu, Auteur Année de publication : 2008 Article en page(s) : pp. 1106–1117 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Load  and  resistance  factor  design  Monte  Carlo  method  Pile  load  tests  Reliability  Ultimate  loads  Piles  Axial  loads  Load  tests Résumé : The present study proposes a procedure to determine partial factors in reliability based design format for pile foundations, considering bias as well as uncertainty in the parameters that represent soil-pile interaction. These issues are addressed using pile load-settlement test data from case studies obtained from the literature. The pile ultimate capacities are evaluated considering three different failure criteria. The uncertainties in the pile-soil interface parameters as well as pile ultimate capacity are quantified in Monte Carlo framework from the measured data by utilizing the closed form “ t-z ” method. Considering dead load to live load ratios as calibration points, the target reliability index is calculated based on existing code safety-checking format. The optimal partial factors are determined such that the difference between reliability index based on limit state equations expressed in terms of partial factors and target reliability index is minimum. Finally, it is observed that optimal partial factors enable rational choice of allowable load on pile foundation. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A8%2811 [...] [article] Load resistance factor design of axially loaded pile based on load test results [texte imprimé] / Sumanta Haldar, Auteur ; G. L. Sivakumar Babu, Auteur . - 2008 . - pp. 1106–1117. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 n°8 (Août 2008) . - pp. 1106–1117 Mots-clés : Load  and  resistance  factor  design  Monte  Carlo  method  Pile  load  tests  Reliability  Ultimate  loads  Piles  Axial  loads  Load  tests Résumé : The present study proposes a procedure to determine partial factors in reliability based design format for pile foundations, considering bias as well as uncertainty in the parameters that represent soil-pile interaction. These issues are addressed using pile load-settlement test data from case studies obtained from the literature. The pile ultimate capacities are evaluated considering three different failure criteria. The uncertainties in the pile-soil interface parameters as well as pile ultimate capacity are quantified in Monte Carlo framework from the measured data by utilizing the closed form “ t-z ” method. Considering dead load to live load ratios as calibration points, the target reliability index is calculated based on existing code safety-checking format. The optimal partial factors are determined such that the difference between reliability index based on limit state equations expressed in terms of partial factors and target reliability index is minimum. Finally, it is observed that optimal partial factors enable rational choice of allowable load on pile foundation. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A8%2811 [...]