Hyperbolic method for prediction of prefabricated vertical drains performance / S. G. Chung in Journal of geotechnical and geoenvironmental engineering, Vol. 135 N° 10 (Octobre 2009)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 135 N° 10 (Octobre 2009) . - pp. 1519–1528 Titre : Hyperbolic method for prediction of prefabricated vertical drains performance Type de document : texte imprimé Auteurs : S. G. Chung, Auteur ; N. K. Lee, Auteur ; S. R. Kim, Auteur Année de publication : 2009 Article en page(s) : pp. 1519–1528 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Soil consolidationSettlementEmbankmentsPredictionsCase studies Résumé : For predicting the settlement rate of a ground area that incorporates prefabricated vertical drains, the hyperbolic method is herein developed based on Barron’s solution and validated by using three documented case studies. This method is suitable within the degrees of consolidation of 60–90%. Results indicate that the estimated coefficients of radial consolidation (Cr) are slightly larger. In two case studies, the estimated Cr values are closer to the coefficients of vertical consolidation obtained from the standard oedometer tests but differ from those values derived from the cone penetration test (CPT) tests. In another case study, where not laboratory results are available, the estimated Cr values fall within a lower bound determined by CPT results. The reason of these differences is due to various factors such as smear and well resistance, the vertical drain type, and its finite drainage capacity. It also appears that, in contrast to the solution obtained by Barron, the settlement versus time curves from the proposed method concur with the monitored curves. Finally, the applicability of the proposed method is discussed based on the case studies. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000042 [article] Hyperbolic method for prediction of prefabricated vertical drains performance [texte imprimé] / S. G. Chung, Auteur ; N. K. Lee, Auteur ; S. R. Kim, Auteur . - 2009 . - pp. 1519–1528. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 135 N° 10 (Octobre 2009) . - pp. 1519–1528 Mots-clés : Soil consolidationSettlementEmbankmentsPredictionsCase studies Résumé : For predicting the settlement rate of a ground area that incorporates prefabricated vertical drains, the hyperbolic method is herein developed based on Barron’s solution and validated by using three documented case studies. This method is suitable within the degrees of consolidation of 60–90%. Results indicate that the estimated coefficients of radial consolidation (Cr) are slightly larger. In two case studies, the estimated Cr values are closer to the coefficients of vertical consolidation obtained from the standard oedometer tests but differ from those values derived from the cone penetration test (CPT) tests. In another case study, where not laboratory results are available, the estimated Cr values fall within a lower bound determined by CPT results. The reason of these differences is due to various factors such as smear and well resistance, the vertical drain type, and its finite drainage capacity. It also appears that, in contrast to the solution obtained by Barron, the settlement versus time curves from the proposed method concur with the monitored curves. Finally, the applicability of the proposed method is discussed based on the case studies. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000042

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