1. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Institute of Mechanics, Materials, and Civil Engineering, Univ. Catholique de Louvain, Place du Levant 1, 1348 Louvain-la-Neuve, Belgium (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering, Institute of Mechanics, Materials, and Civil Engineering, Univ. Catholique de Louvain, Place du Levant 1, 1348 Louvain-la-Neuve, Belgium.