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Response of a group of stiff piles to liquefaction induced lateral spreading: numerical simulation of a shaking table experiment

Haeri, S. M ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. Publisher: Asian Regional Conference on Soil Mechanics and Geotechnical Engineering , 2020
  3. Abstract:
  4. During recent years, extensive studies have been conducted around the world documenting liquefaction induced lateral spreading and its effects on deep foundations. This study is aimed to numerically model a shaking table experiment, to investigate the effect of lateral spreading on piles and also to assess the capability of an advanced critical state two-surface plasticity model in predicting soil and pile responses to lateral spreading. Changes in permeability of the soil layers during the shaking are also accounted for using the software's built-in programming language, FISH. Numerical results showed that the onset of liquefaction occurs after just a few cycles from the beginning of the shaking and the main share of ground lateral movement takes place during the first few seconds of dynamic excitement which is a common phenomenon in physical model testing of loose liquefiable layers. Response of stiff piles of a group to lateral spreading is investigated and different related aspects, including neighboring and shadow effects are discussed in detail. In general, comparison of the experimental data with the simulation results, showed decent accuracy of the numerical predictions of this study. Copyright © Soil Mechanics and Geotechnical Engineering, ARC 2019.All rights reserved
  5. Keywords:
  6. FLAC3D ; Lateral spreading ; Liquefaction ; Numerical model ; Pile ; Critical current density (superconductivity) ; Geotechnical engineering ; Plasticity testing ; Soil liquefaction ; Soil mechanics ; Soils ; Deep foundations ; Lateral movement ; Numerical predictions ; Numerical results ; Physical model testing ; Shaking table experiment ; Two-surface plasticity ; Piles
  7. Source: 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019, 14 October 2019 through 18 October 2019 ; 2020
  8. URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-85084944266&origin=resultslist