1. National Engineering Research Center of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China
2. School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China
3. School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China
4. Guangdong Hualu Communications Technology Co., Ltd., Guangzhou 510550, China
5. Zhejiang Communications Construction Group Co., Ltd., Hangzhou 310051, China