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The Scientific World Journal
Volume 2014 (2014), Article ID 216278, 8 pages
http://dx.doi.org/10.1155/2014/216278
Research Article

Assessment of Stone Columns as a Mitigation Technique of Liquefaction-Induced Effects during Italian Earthquakes (May 2012)

1Department of Civil Engineering, University of San Marino, 44 Via Salita alla Rocca, 47890 San Marino, San Marino
2Civil and Mechanical Engineering Department (DIMeC), University of Modena e Reggio Emilia, 905 Via Vignolese, 41100 Modena, Italy

Received 12 August 2013; Accepted 7 November 2013; Published 27 January 2014

Academic Editors: F. Darve and G. Liu

Copyright © 2014 Davide Forcellini and Angelo Marcello Tarantino. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Soil liquefaction has been observed worldwide during recent major earthquakes with induced effects responsible for much of the damage, disruption of function, and considerable replacement expenses for structures. The phenomenon has not been documented in recent time with such damage in Italian context before the recent Emilia-Romagna Earthquake (May 2012). The main lateral spreading and vertical deformations affected the stability of many buildings and impacted social life inducing valuable lessons on liquefaction risk assessment and remediation. This paper aims first of all to reproduce soil response to liquefaction-induced lateral effects and thus to evaluate stone column mitigation technique effectiveness by gradually increasing the extension of remediation, in order to achieve a satisfactory lower level of permanent deformations. The study is based on the use of a FE computational interface able to analyse the earthquake-induced three-dimensional pore pressure generation adopting one of the most credited nonlinear theories in order to assess realistically the displacements connected to lateral spreading.