1. Key Laboratory for Special Area Highway Engineering of Ministry of EducationChang'an University School of Highway, Chang'an University Xi'an Shaanxi China
2. Department of Civil and Environmental EngineeringCarnegie Mellon University Pittsburgh Pennsylvania
3. Liaoning Provincial Transportation Science Research Institute Co., Ltd. Shenyang Liaoning China
4. School of Civil Engineering and ArchitectureZhengzhou University of Aeronautics Zhengzhou Henan China