1. Assistant Professor, Dept. of Structural Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, China (corresponding author).
2. Professor, Dept. of Structural Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, China.
3. Assistant Professor, Dept. of Structural Engineering, Hefei Univ. of Technology, 193 Tunxi Rd., Hefei 230009, China.
4. Master Student, Dept. of Structural Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, China.