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Cotecchia, F.
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Cotecchia, F.
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- PublicationOpen AccessCaratterizzazione geotecnica del sottosuolo di San Giuliano di Puglia(2009)
; ; ; ; ; ; ;d’Onofrio, A.; Dipartimento di Ingegneria Idraulica, Geotecnica ed Ambientale, Università degli Studi di Napoli “Federico II”, Napoli, Italia ;Vitone, C.; Dipartimento di Ingegneria Civile e Ambientale, Politecnico di Bari,Italia ;Cotecchia, F.; Dipartimento di Ingegneria Civile e Ambientale, Politecnico di Bari,Italia ;Puglia, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Santucci de Magistris, F.; Laboratorio di Dinamica Strutturale e Geotecnica, StreGa, Università degli Studi del Molise, Temoli (CB), Italia ;Silvestri, F.; Dipartimento di Ingegneria Idraulica, Geotecnica ed Ambientale, Università degli Studi di Napoli “Federico II”, Napoli, Italia; ; ; ; ; In order to correlate the damages produced by 2002 Molise earthquake to the litostratigraphic and mechanical characteristics of the subsoil, a detailed investigation by in situ and laboratory tests was performed in San Giuliano di Puglia (CB). The investigations were directed both to study the Toppo Capuana marly clays, above which most of the damages of buildings were founds, and, to a lesser extent, the Faeto flysch formation, that is its rigid bedrock. The marly clay deposit is distinguishable in several strata, which varied in relation to the intensity of cracking, that is classified in a rational way. The in situ investigations allowed to recognize the litostratigraphic characters of the area and to reconstruct, with different methods, the main stratigraphic section account for variability of alteration and cracking. The latter factor, although not evident through the physical properties of soils, was of paramount importance in understanding the strength and compressibility behaviour of the soil, and on the overall stress-strain behaviour that controls a seismic response of the subsoil.340 3307 - PublicationOpen AccessMechanics of a tectonized soil slope: influence of boundary conditions and rainfall(2001)
; ; ; ;Santaloia, F.; CNR-IRPI ;Cotecchia, F.; Politecnico di Bari ;Polemio, M.; CNR-IRPI; ; The Vadoncello landslide was mobilized in December 1993 and is still active. It involves highly tectonized soils and is the reactivation of a landslide dragged by a larger landslide at the toe of the slope soon after the 1980 Irpinia (Southern Italy) earthquake. Investigations and monitoring of the Vadoncello landslide were carried out, between 1994 and 1996, within an EC funded research project. The slope has been found to be formed of chaotic successions of soil and rock strata which have been grouped into soil complexes. The soil mechanical properties are shown to be very poor, the deep soils being prone to large plastic straining even due to relatively small loading changes. The soil displacements show that a shallow fast rotational sliding has occurred at the top of the slope and a shallow earthflow has developed downslope, both lying above deeper soils involved in a mechanism of slow and long-lasting irrecoverable movements. These slow deep movements are considered to be consequent to the plastic flow of the clayey soils. They can be activated by the effects of seasonal rainfall, of low-medium intensity seismic events and by the effects of the morphological changes resulting from the slow movements themselves. The landslide reactivation in 1993 is seen to have been the combination effect of a low return-period rainfall event and the slow movements active at depth in the slope.220 847