1. Professor, Dept. of Civil Engineering, Tsinghua Univ., Beijing 100084, China (corresponding author).
2. Ph.D. Candidate, Dept. of Civil Engineering, Tsinghua Univ., Beijing 100084, China.
3. Engineer, China Architecture Design and Research Group, Beijing 100044, China.
4. Master’s Degree Student, Dept. of Civil Engineering, Tsinghua Univ., Beijing 100084, China.