THE EFFECT OF CONSTITUTIVE MODELS ON NUMERICAL ANALYSIS O F THE CAVITY EXPANSION PROBLEM (In Turkish)


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Şengün E., Berilgen M. M. , Incecik M.

Zemin Mekaniği ve Temel Mühendisliği Ondördüncü Ulusal Kongresi, Isparta, Turkey, 01 October 2012, pp.1-10

  • Publication Type: Conference Paper / Full Text
  • City: Isparta
  • Country: Turkey
  • Page Numbers: pp.1-10

Abstract

The aim of this study is to investigate the changes in stresses, porewater pressures and displacements caused by the expansion of cylindrical cavity with different constitutive models. For this purpose, the surrounding soil is assumed to be Boston Blue Clay and the soil cavity is investigated by using Plaxis 2011 2D utilizing Modified Cam Clay (MCC), Soft Soil (SS) and Hardening Soil (HS) constitutive models within finite element analyses. The results of numerical analyses involving the established axisymmetric finite element model is compared to the findings of the numerical analyses given by Carter et al. (1979). While the changes in stresses, porewater pressures and displacements in the soil assuming SS and HS models are within acceptable margin of those by Carter et al. (1979), the values obtained using the MCC model are almost identical.