Dipartimento di Ingegneria Idraulica, Geotecnica e Ambientale
Centre de recherche public Accréditation CIR
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Téléphone : +39 081 7683444
Mail : diga [ at ] unina.it
Adresse :
Via Claudio 21
80125 Napoli
Italie
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Profil scientifique partiel |
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Domaines étudiés partiels
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Quelques documents de Dipartimento di Ingegneria Idraulica, Geotecnica e Ambientale
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Caratterizzazione geotecnica del sottosuolo di San Giuliano di Puglia
Auteurs :
A. D’onofrio, R. Puglia, F. Santucci De Magistris et C. Vitone
Masquer le résumé
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.
Source :
INGV
Influence of past loading history on the seismic response of earth dams
Auteurs :
Arézou Modaressi, Luca Pagano et Stefania Sica
Masquer le résumé
The paper deals with the influence of past loading history on the seismic response of earth dams by interpreting the static and dynamic behaviour of a real case-history: the El Infiernillo Dam. Settlements, pore water pressures and accelerations measured during different stages of the dam lifetime have been interpreted by using a coupled dynamic approach derived from the u–p formulation of the Biot consolidation theory. The approach is solved numerically with the finite element method. The study firstly investigates the effectiveness of the adopted model to predict the observed dam behaviour. Following, a parametric study has been performed to examine what effects, additional loading histories, have on the prediction of seismic-induced freeboard loss. The study brings out soil hardening effects induced by the past seismic history, and investigates to what extent earth dam response to a given earthquake may be affected by previous seismic events.
Influence of past loading history on the seismic response of earth dams
Auteurs :
Arézou Modaressi, Luca Pagano et Stefania Sica
Masquer le résumé
The paper deals with the influence of past loading history on the seismic response of earth dams by interpreting the static and dynamic behaviour of a real case-history: the El Infiernillo Dam. Settlements, pore water pressures and accelerations measured during different stages of the dam lifetime have been interpreted by using a coupled dynamic approach derived from the u–p formulation of the Biot consolidation theory. The approach is solved numerically with the finite element method. The study firstly investigates the effectiveness of the adopted model to predict the observed dam behaviour. Following, a parametric study has been performed to examine what effects, additional loading histories, have on the prediction of seismic-induced freeboard loss. The study brings out soil hardening effects induced by the past seismic history, and investigates to what extent earth dam response to a given earthquake may be affected by previous seismic events.
Monitoring fracture propagation in a soft rock (Neapolitan tuft) using acoustic emissions and digital images
Auteurs :
Sanctis Fiorenza De, Sanctis Fiorenza De, Stephen A. Hall et Gioacchino Viggiani
Pas de résumé disponible
Source :
INIST
Monitoring fracture propagation in a soft rock (Neapolitan tuft) using acoustic emissions and digital images
Auteurs :
Sanctis Fiorenza De, Sanctis Fiorenza De, Stephen A. Hall et Gioacchino Viggiani
Pas de résumé disponible
Source :
INIST
Towards an Integrated geographic information system for the evaluation of the susceptibility to disruption of the territory of Naples
Auteurs :
E. Bellucci Sessa, D. Calcaterra, G. Del Giudice et L. Farina
Masquer le résumé
The intense activities of scientific and technological research conducted in recent years riguardoai upheavals affecting the Neapolitan territory and their cause has produced unanotevole amounts of data. With them, and others has been acquired, it was possible to produce a prototipodi Integrated geographic information system aimed to study the State of dissestodella city of Naples. The algorithm behind the GIS model uses a systemic model, called RES (Rock Engineering Systems), which is based on analysis of interazionitra various factors at play. It was then calculated an index of Susceptibility to disruption, sullabase of which were produced four cards susceptibility for supporting walls, slopes, drainage and water supply. The proposed model can be refined and more, via viache will be enriched with data-base, in order to improve reliability in areas where the datisono is currently lacking.
Softening and instability of natural slopes in highly fissured plastic clay shales
Auteurs :
A. Mandolini, L. Picarelli, M. Ramondini et G. Urciuoli
Masquer le résumé
Softening is often considered to be the main cause of first-time slides in OC clay, but so far the mechanics of softening has not been satisfactorily explained. Bearing on laboratory data and field observations about landslides in tectonized highly plastic clay shales of Italian Apennines, the paper describes a process of soil weakening that could explain some failures of natural slopes.
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