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Zero-displacement lateral spreads, 1999 Kocaeli, Turkey, earthquake / T. Leslie Youd in Journal of geotechnical and geoenvironmental engineering, Vol. 135 N°1 (Janvier 2009) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 135 N°1 (Janvier 2009) . - pp. 46–61 Titre : Zero-displacement lateral spreads, 1999 Kocaeli, Turkey, earthquake Type de document : texte imprimé Auteurs : T. Leslie Youd, Auteur ; Daniel W. DeDen, Auteur ; Bray, Jonathan D., Auteur Année de publication : 2009 Article en page(s) : pp. 46–61 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Earthquakes  Liquefaction  Displacement  Turkey  Fine-grained  soils  Coarse-grained  soils Résumé : Three potential lateral spreads exhibited negligible displacements during the 1999 Kocaeli, Turkey Earthquake (Mw=7.5) even though they were located within 7km of the fault rupture. These spreads are analyzed to verify and augment current procedures for predicting liquefaction resistance and lateral spread displacement. The sites include Çark Canal and Cumhuriyet Avenue in Adapazari, underlain by fine-grained sediment, and Degirmendere Nose adjacent to Izmit Bay, a steeply sloping area underlain by moderately dense silty sand. The plasticity index and moisture content criteria of Bray and Sancio set forth in 2006 indicate that much of the fine-grained sediment is liquefiable. Even though liquefaction likely occurred, lateral spreading did not occur due either to the dilative nature of fine-grained, sandlike sediments or the inherent strength of claylike sediments. Corrected blow counts, (N1)60 , in moderately dense sand at Degirmendere Nose range from 15 to 25 blows/ 30cm , indicating that liquefaction should have occurred but that the silty sand was too dense and dilative to deform. This finding is consistent with the MLR procedure of Youd et al. set forth in 2002 that identifies liquefiable sands with (N1)60 greater than 15 blows/ 30cm as resistant to lateral spread during earthquakes with M<8 . En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282009%29135%3A1%2846 [...] [article] Zero-displacement lateral spreads, 1999 Kocaeli, Turkey, earthquake [texte imprimé] / T. Leslie Youd, Auteur ; Daniel W. DeDen, Auteur ; Bray, Jonathan D., Auteur . - 2009 . - pp. 46–61. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 135 N°1 (Janvier 2009) . - pp. 46–61 Mots-clés : Earthquakes  Liquefaction  Displacement  Turkey  Fine-grained  soils  Coarse-grained  soils Résumé : Three potential lateral spreads exhibited negligible displacements during the 1999 Kocaeli, Turkey Earthquake (Mw=7.5) even though they were located within 7km of the fault rupture. These spreads are analyzed to verify and augment current procedures for predicting liquefaction resistance and lateral spread displacement. The sites include Çark Canal and Cumhuriyet Avenue in Adapazari, underlain by fine-grained sediment, and Degirmendere Nose adjacent to Izmit Bay, a steeply sloping area underlain by moderately dense silty sand. The plasticity index and moisture content criteria of Bray and Sancio set forth in 2006 indicate that much of the fine-grained sediment is liquefiable. Even though liquefaction likely occurred, lateral spreading did not occur due either to the dilative nature of fine-grained, sandlike sediments or the inherent strength of claylike sediments. Corrected blow counts, (N1)60 , in moderately dense sand at Degirmendere Nose range from 15 to 25 blows/ 30cm , indicating that liquefaction should have occurred but that the silty sand was too dense and dilative to deform. This finding is consistent with the MLR procedure of Youd et al. set forth in 2002 that identifies liquefiable sands with (N1)60 greater than 15 blows/ 30cm as resistant to lateral spread during earthquakes with M<8 . En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282009%29135%3A1%2846 [...]