1. Doctoral Researcher, Dept. of Civil and Environmental Engineering, Politecnico di Milano, 20133 Milan, Italy.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Politecnico di Milano, 20133 Milan, Italy (corresponding author).
3. Student, Politecnico di Milano, 20133 Milan, Italy.
4. Professor, Dept. of Civil and Environmental Engineering, Politecnico di Milano, 20133 Milan, Italy.