In order to explore the problem of shortwave rail corrugation in the floating rail damping fastener track,a numerical model of the 3D wheelrail static contact was developed by the finite element software ABAQUS.The contact patch,contact pressure and rail displacement were calculated.The influence of vertical stiffness and rail support mode on rail contact parameters was investigated.The numerical results show that the underrail structure (fastener,track slab,etc.) has little effect on the static contact parameters of the floating rail damping fastener track.The maximum wheelrail contact pressure of the floating rail damping fastener (rail web support) is larger than that of the DTVI2 fastener (rail bottom support),and the contact area is smaller that of the DTVI2 fastener.The rail vertical displacement of the floating rail damping fastener track is about 5 times larger than that of the DTVI2 fastener,the transverse displacement is 5.2% to 13.2% smaller than that of the DTVI2 fastener,and the rail turning angle is 146.3% to 206.1% larger than that of the DTVI2 fastener.The vertical stiffness of floating rail damping fastener only has a great influence on the rail vertical displacement,and it has no influence on the contact pressure distribution,contact area,rail transverse displacement and rail turning angle.The large rail vertical displacement and the large rail turning angle will decrease the stability of the wheelrail contact,and will lead to the vibration of the wheelrail force and the rail corrugation.Therefore,the supporting mode of the fastener should be redesinged to reduce the rail turning angle.