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Effect of Initial Relative Density on Post-cyclic Stress-Strain Response of Liquefied Samples

  • Bashar Ismael
  • Domenico Lombardi
  • Subhamoy Bhattacharya
Conference paper

Abstract

This paper presents results from multi-stage cyclic triaxial tests carried out on samples prepared at different relative densities to investigate the post-cyclic response of the liquefied soil. The experimental results show that the stress-strain behaviour of liquefied samples is strain-hardening, thus it increases in strength and stiffness upon shearing. This strain-hardening response can be represented by means of a simplified stress-strain relationship defined by three parameters: (i) take-off shear strain γto, (ii) shear modulus; G1 at the beginning of shearing stage for γ < γto; (iii) shear modulus G2 at large strains γ > γto. The results show that these parameters are a function of the initial relative density of the samples, whereby higher densities result in lower γto but higher G1 and G2.

Keywords

Liquefaction Post-cyclic response Multi-stages triaxial test Undrained soil behavior 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Bashar Ismael
    • 1
  • Domenico Lombardi
    • 1
  • Subhamoy Bhattacharya
    • 2
  1. 1.School of Mechanical, Aerospace and Civil EngineeringUniversity of ManchesterManchesterUK
  2. 2.Department of Civil and Environmental EngineeringUniversity of SurreyGuildfordUK

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