1. Dept. of Civil Engineering, Architecture and Georesources, Instituto Superior Técnico, Technical Univ. of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
2. Civil Engineer, Senior Researcher, National Laboratory of Civil Engineering, Av. do Brasil, 1700-066 Lisbon, Portugal.
3. Full Professor, Dept. of Civil Engineering, Architecture and Georesources, Instituto Superior Técnico, Technical Univ. of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal (corresponding author).
4. Junior Researcher, National Laboratory of Civil Engineering, Av. do Brasil, 1700-066 Lisbon, Portugal.