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Prediction of lateral spreading displacement on gently sloping liquefiable ground

Ghasemi Fare, O ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1061/9780784480489.027
  3. Publisher: American Society of Civil Engineers (ASCE) , 2017
  4. Abstract:
  5. A fully coupled numerical analysis using Biot's theory with u-p formulation considering variable permeability during liquefaction is used in this study to simulate liquefaction induced lateral spreading phenomenon. A centrifuge test performed on liquefiable soil at Rensselaer Polytechnic Institute is simulated using the developed model. The numerical results are in good agreement with experimental observations. A number of numerical simulations under different geometric, site-specific, and ground acceleration parameters have been carried out in the course of this study. Based on the statistical analysis conducted on the results of 31 different models, a new relation is proposed for predicting the liquefaction-induced maximum lateral displacement for gently sloping grounds. The proposed relation can predict the maximum ground lateral displacement obtained by the rigorous finite element analysis with less than 10% error. The predicted lateral displacements are in a good consistency with the ground movement observations in 16 different centrifuge tests as well as more than 250 field observations. The proposed relation in this study shows a better match compared to other well-known relations. © ASCE
  6. Keywords:
  7. Centrifuges ; Forecasting ; Soil liquefaction ; Field observations ; Ground accelerations ; Lateral displacements ; Lateral spreading ; Liquefiable ground ; Liquefiable soil ; Numerical results ; Variable permeability ; Finite element method
  8. Source: Geotechnical Frontiers 2017, 12 March 2017 through 15 March 2017 ; Issue GSP 281 , 2017 , Pages 267-276 ; 08950563 (ISSN)
  9. URL: https://ascelibrary.org/doi/10.1061/9780784480489.027