1. Professor, School of Civil Engineering, Chongqing Univ., Chongqing 400045, China (corresponding author).
2. Graduate Student, School of Civil Engineering, Chongqing Univ., Chongqing 400045, China.
3. Professor, Dept. of Civil and Environmental Engineering, Michigan State Univ., East Lansing, MI 48824.
4. Engineer, Chongqing Daan Heavy Steel Structural Engineering Co. Ltd., Yongchuan Industrial Park, Chongqing 402181, China.