1. Professor, Dept. of Civil Engineering, Beihang Univ., Beijing 100191, China.
2. Graduate Student, Dept. of Civil Engineering, Beihang Univ., Beijing 100191, China.
3. Associate Professor, Dept. of Civil Engineering, Beihang Univ., Beijing 100191, China (corresponding author).
4. Senior Engineer, China Airport Construction Group Corporation, Beijing 100101, China.
5. Engineer, China Airport Construction Group Corporation, Beijing 100101, China.