1. Lecturer, State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang, China,
2. Professor, School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China,
3. Professor, School of Civil Engineering and Environmental Science, University of Oklahoma, Norman, OK, USA,(corresponding author)
4. Lecturer, School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, China,