1. Ph.D. Candidate, Dept. of Airfield and Building Engineering, Air Force Engineering Univ., Xi’an, Shaanxi 710038, China (corresponding author).
2. Professor, Dept. of Airfield and Building Engineering, Air Force Engineering Univ., Xi’an, Shaanxi 710038, China; Professor, College of Mechanics and Civil Architecture, Northwest Polytechnic Univ., Xi’an, Shaanxi 710072, China.