In this paper the evolution of slopes subjected to weathering has been studied by the limit analysis upper bound method. Slopes subjected to weathering undergo a series of landslides, occurring at successive times, which cause the progressive retrogression of the slope front. The discrete succession of failures has been modelled taking into account the different geometry assumed by slopes after each landslide. Soil has been modelled as a Coulomb material (c, φ). Weathering has been modelled by assuming a uniform cohesion decrease within slopes whereas the friction angle remains constant. An analytical solution was obtained which gives the geometry of the failure surface and the soil mechanics properties at the onset of each landslide.
In this paper the evolution of …
AUTORI: Utili S. RIG ANNO: 2004 NUMERO: 2 Numero di pagina: 9