1. Assistant Professor, Dept. of Civil Engineering, Zhejiang Univ., Hangzhou 310058, China; Postdoctoral Fellow, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, Canada T6G 1H9.
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, Canada T6G 1H9; Professor, College of Civil and Environmental Engineering, Ningbo Univ., Zhejiang 315211, China (corresponding author).