Geotechnical characterization of the Florence (Italy) soils

Abstract

This paper deals with the geotechnical characterization of the Florence (Italy) subsoil. On the base of 1932 stratigraphic log from drill-holes, and the related available geotechnical lab tests, we performed a statistical geotechnical characterization of the Florence subsoil, according to the geological allostratigraphic and litotechnical units defined by the Neogene evolution of the Florence intermountain sedimentary basin. It resulted Early Pleistocene palustrine and alluvial deposits; Late Pleistocene the Arno River filled the valley with river bed deposits; in Holocene all the area was covered by fluvial and alluvial deposits. The geotechnical statistical analysis performed outline different values in the main parameters of the three units, each one subdivided into granular and cohesive. In addition, the Vs display different referencing values for each unit. Statistical analysis were made according to the indication of Eurocode 7 and Italian rule NTC 2008.