Numerical Modelling of Instability in Strain-Softening Soils - NGI
Numerical Modelling of Instability in Strain-Softening Soils - NGI
Numerical Modelling of Instability in Strain-Softening Soils - NGI
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49Conclud<strong>in</strong>g remarks• <strong>Numerical</strong> Model<strong>in</strong>g <strong>of</strong> <strong>Instability</strong> <strong>in</strong> Stra<strong>in</strong>-S<strong>of</strong>ten<strong>in</strong>g <strong>Soils</strong> is still difficult,but may now be done <strong>in</strong> a consistent manner• The <strong>NGI</strong> – ADPS<strong>of</strong>t with non-local stra<strong>in</strong> is a powerful tool• A pragmatic «effect <strong>of</strong> s<strong>of</strong>ten<strong>in</strong>g factor» is studied, 10% ?• Old message repeated: Prevent the <strong>in</strong>itial slide!• More research needed:– Understand<strong>in</strong>g material behaviour– Scal<strong>in</strong>g the s<strong>of</strong>ten<strong>in</strong>g curve only exact for 1D– Initial stresses are hard to determ<strong>in</strong>e, but has high <strong>in</strong>fluence– Effective stress based simulations wanted Ge<strong>of</strong>uture• Design codes and guidel<strong>in</strong>esICG Symposium Geohazards and Society November 2012
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