1. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong Univ. of Science and Technology, Qingdao 266590, China.
2. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong Univ. of Science and Technology, Qingdao 266590, China; College of Civil Engineering, Fujian Univ. of Technology, Fuzhou 350118, China (corresponding author).
3. Qingdao People's Air Defense Command and Service Center, Qingdao National Defense Mobilization Office, Qingdao 266590, China.
4. Graduate School of Engineering, Nagasaki Univ., Nagasaki 852-8521, Japan.