Abstract
Numerical modelling continues to play a unique and intrinsic role in the process of geotechnical design. Of greatest concern are soil c onstitutive models that are employed within finite element software to predict soil behaviour. The objective o f this paper is to provide a numerical study of the Mohr- Coulomb and Hardening Soil constitutive models in simulation of a braced excavation. The Taipei Nation al Enterprise Centre (TNEC) basement construction process was well documented and the commercial finite element code, Plaxis, was selected for this numeric al comparative study. It was found that the Mohr- Coulomb soil model, a first order approximation, pr oduced an underestimation of the diaphragm wall deflection, whilst the Hardening Soil model provide d a good prediction of the observed in-situ diaphra gm wall deflections.
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