Application of the Hardening Soil model in deep excavation analysis

[admin]

Application of the Hardening Soil model in deep excavation analysis

The Mohr–Coulomb model (MC) is commonly used in deep excavation analysis for its simplicity. However, it
has shortcomings that may produce unrealistic soil behaviour. The Hardening Soil model (HS) is an advanced
soil model that is able to generate more realistic soil response in terms of non-linearity, stress dependency and
inelasticity. This article highlights some of the shortcomings of the MC model and presents a simplified
approach to determine the HS parameters for drained and undrained analysis of deep excavations. Three case
studies were back-analysed to validate the application of the HS model for practical excavation analysis. The
HS model suffers the same problems as the MC model in using effective stress parameters c0 and f0 to determine
the undrained shear strength.
Keywords: Hardening Soil model; Mohr-Coulomb soil model; excavation; constitutive model; nonlinearity; backanalysis

Hidden Content

Give reaction or reply to this topic to see the hidden content.

Hidden Content

Give reaction or reply to this topic to see the hidden content.