1. Ph.D. Candidate, School of Civil Engineering, Beijing Jiaotong Univ., Beijing 100044, China; formerly, Visiting Predoctoral Research Associate, Dept. of Civil and Environmental Engineering, ATLSS Engineering Research Center, Lehigh Univ., 117 ATLSS Dr., Bethlehem, PA 18015-4729.
2. Professor and the Fazlur R. Khan Endowed Chair of Structural Engineering and Architecture, Dept. of Civil and Environmental Engineering, ATLSS Engineering Research Center, Lehigh Univ., 117 ATLSS Dr., Bethlehem, PA 18015-4729 (corresponding author).
3. Assistant Professor, School of Civil and Environmental Engineering, College of Engineering, Architecture and Technology, Oklahoma State Univ., 207 Engineering South, Stillwater, OK 74078-5033.
4. Professor, School of Civil Engineering, Beijing Key Laboratory of Structural Wind Engineering and Urban Wind Environment, Beijing Jiaotong Univ., Beijing 100044, China.