1. Ph.D. Candidate, Key Laboratory of Concrete and Prestressed Concrete Structures, Ministry of Education, Southeast Univ., Nanjing 210096, P. R. China (corresponding author).
2. Assistant Professor, Charles E. Via Jr. Dept. of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061.
3. Assistant Researcher, CONSTRUCT/Faculty of Engineering, Univ. of Porto, 4200-465 Porto, Portugal.
4. Associate Professor, Dept. of Structural Engineering, Federal Univ. of Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
5. Ph.D. Candidate, Dept. of Structural Engineering, Federal Univ. of Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
6. Assistant Professor, Institute of Science and Innovation in Mechanical and Industrial Engineering/Faculty of Engineering, Univ. of Porto, 4200-465 Porto, Portugal.
7. Full Professor, CONSTRUCT/Faculty of Engineering, Univ. of Porto, 4200-465 Porto, Portugal.