1. Assistant Professor, Dept. of Structural Engineering, Univ. of Naples Federico II, 80125, Naples, Italy (corresponding author).
2. Ph.D. Student, Dept. of Structural Engineering, Univ. of Naples Federico II, 80125, Naples, Italy.
3. Assistant Professor, Dept. of Structural Engineering, Univ. of Naples Federico II, 80125, Naples, Italy.
4. Professor, Dept. of Structural Engineering, Univ. of Naples Federico II, 80125, Naples, Italy.