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EnglishA good working balance between simplicity and reliability in assessing seismic slope stability is represented by displacement-based methods, in which the effects of deformability and ductility can be either decoupled or coupled in the dynamic analyses. In this paper, a 1D lumped mass stick slip model is developed, accounting for soil heterogeneity and non linear behaviour, with a base sliding mechanism at a potential rupture surface. The results of the preliminary calibration show a good agreement with frequency-domain site response analysis in no-slip conditions. The comparison with rigid sliding block analyses and with the decoupled approach proves that the stick-slip procedure can result increasingly unconservative for soft soils and deep sliding depths. © 2008 American Institute of Physics.
| Titolo: | Prediction of seismic slope displacements by dynamic stick-slip analyses |
| Autori: | |
| Data di pubblicazione: | 2008 |
| Abstract: | A good working balance between simplicity and reliability in assessing seismic slope stability is represented by displacement-based methods, in which the effects of deformability and ductility can be either decoupled or coupled in the dynamic analyses. In this paper, a 1D lumped mass stick slip model is developed, accounting for soil heterogeneity and non linear behaviour, with a base sliding mechanism at a potential rupture surface. The results of the preliminary calibration show a good agreement with frequency-domain site response analysis in no-slip conditions. The comparison with rigid sliding block analyses and with the decoupled approach proves that the stick-slip procedure can result increasingly unconservative for soft soils and deep sliding depths. © 2008 American Institute of Physics. |
| Handle: | http://hdl.handle.net/11584/115604 |
| ISBN: | 9780735405424 |
| Tipologia: | 4.1 Contributo in Atti di convegno |
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