1. Doctoral Student, Dept. of Civil Engineering, School of Engineering, Univ. of Minho, Campus Azurém, Guimarães, Portugal (corresponding author).
2. Associate Professor, Dept. of Civil Engineering, School of Engineering, Univ. of Minho, Campus Azurém, Guimarães, Portugal.
3. Assistant Professor, Dept. of Civil Engineering, School of Engineering, Univ. of Minho, Campus Azurém, Guimarães, Portugal.