Constitutive model and analysis of creep flow of natural slopes

 

A new model for describing creeping of natural slopes is proposed. The geological material in the slope is modeled with a non-homogeneous Bingham constitutive equation. This constitutive equation accounts for the effect of gravitational compaction on the material response and allows for a variation of density and yield stress with depth.

 

A new model for describing creeping of natural slopes is proposed. The geological material in the slope is modeled with a non-homogeneous Bingham constitutive equation. This constitutive equation accounts for the effect of gravitational compaction on the material response and allows for a variation of density and yield stress with depth.

A criterion for shear flow initiation is formulated and the ensuing, motion is described. A straightforward procedure for determination of the parameters of the model based only on field data is presented. To illustrate this procedure and the suitability and potential of the proposed approach, field data reported in the literature have been used to predict the behaviour (measured displacements distribution) of landslides from two sites (in Switzerland and in Italy). Comparison between the theoretical predictions and measured displacement profiles are reasonably good, with accuracy within the experimental scatter.


  A new mo …


AUTORI: Cazacu O., Cristescu N.D.
RIG ANNO:1999 NUMERO:3
Numero di pagine: 44


Allegato: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2000_3_44.pdf
Allegato:
Articolo completo: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2000_3_44.pdf