1. Lecturer, School of Civil Engineering, Shandong Jianzhu Univ., Jinan, Shandong 250101, China; Key Laboratory of Building Structural Retrofitting and Underground Space Engineering, Ministry of Education, Shandong Jianzhu Univ., Jinan, Shandong 250101, China.
2. School of Civil Engineering, Shandong Jianzhu Univ., Jinan, Shandong 250101, China.
3. College of Civil Engineering, Tongji Univ., Shanghai 200092, China (corresponding author).
4. Professor, Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong Univ., Chengdu, Sichuan 610031, China.