Summary The present paper mainly deals with the stability of debris deposits in the northern Apennines, which is an area of relatively high seismicity. More specifically, the paper analyses the co-seismic stability of dry infinite slopes by the Limit Equilibrium Method (LEM) and uses the results of Newmark-type analysis for defining appropriate values of the seismic coefficients to be used in pseudo-static analysis. The study areas are the mountainous zones of Garfagnana and Lunigiana (Tuscany – Italy), which consist of hundreds of square kilometres. The main purposes of the paper are: to outline a methodological approach, to define criteria for assessing the stability conditions in the whole study area and to suggest appropriate seismic coefficients for slope instabilities mainly driven by inertial forces (to be used in LEM analyses) Appendix A reports information on the strength parameters of debris deposits as obtained from a number of works. Mainly Appendix A gives a range of possible values. In fact, these values have not been used in the present study, because the objective of the study is to define general criteria for stability conditions and not to analyse specific case studies. Appendix B shows plots of the yield -acceleration values that have been obtained from pseudo-static analysis assuming homogeneous soil profile with c’ and ϕ’, curvilinear failure surface and different water table. This Appendix has the only purpose of extending the possible application of the proposed methodology.
|Autori:||LO PRESTI D; MEISINA C; SQUEGLIA N|
|Titolo:||APPLICABILITA' DI PROVE PENETROMETRICHE STATICHE NELLA RICOSTRUZIONE DEL PROFILO STRATIGRAFICO|
|Anno del prodotto:||2009|
|Appare nelle tipologie:||1.1 Articolo in rivista|