1. Assistant Professor, DISEG-Dept. of Structural and Geotechnical Engineering, Univ. of Genoa, via Montallegro 1, 16145 Genova, Italy.
2. Research Assistant, DISEG-Dept. of Structural and Geotechnical Engineering, Univ. of Genoa, via Montallegro 1, 16145 Genova, Italy.