1. Dept. of Civil Engineering, Qingdao Univ. of Technology, Qingdao 266033, China.
2. Master’s Candidate, Dept. of Civil Engineering, Qingdao Univ. of Technology, Qingdao 266033, China.
3. Professor, Dept. of Civil Engineering, Qingdao Univ. of Technology, Qingdao 266033, China.
4. Engineer, Qingjian Group Co., Ltd., No. 5, Nanhai Branch Rd., Qingdao, Shandong 266033, China.
5. Professor, Dept. of Civil Engineering, Qingdao Univ. of Technology, Qingdao 266033, China (corresponding author).