1. Ph.D. Candidate, Dept. of Civil Engineering, Univ. of Sherbrooke, Quebec, Canada J1K 2R1.
2. Postdoctoral Fellow, Dept. of Civil Engineering, Univ. of Sherbrooke, Quebec, Canada J1K 2R1.
3. Natural Sciences and Engineering Research Council (NSERC) and Canada Research Chair Professor, Dept. of Civil Engineering, Univ. of Sherbrooke, 2500 Blvd. Université, Sherbrooke, Quebec, Canada J1K 2R1 (corresponding author).