[1] School of Civil Engineering, Central South University, Changsha,410075, China
[2] National Engineering Research Center of High-speed Railway Construction Technology, Changsha,410075, China
[3] China Railway Siyuan Survey and Design Group Co. Ltd, Wuhan,430063, China
[4] Hubei Key Laboratory for Safe Service of Railway Track, Wuhan,430063, China
[5] Magnel-Vandepitte Laboratory, Department of Structural Engineering and Building Materials, Ghent University, Ghent, Belgium