1. Professor, Dept. of Civil, Environmental, and Architectural Engineering, Faculty of Engineering, Univ. of Padua, Via F. Marzolo, 9-35131 Padua, Italy.
2. Ph.D. Student, Dept. of Civil, Environmental, and Architectural Engineering, Faculty of Engineering, Univ. of Padua, Via F. Marzolo, 9-35131 Padua, Italy (corresponding author).