Abstract: Various maintenance measures have been applied to longitudinally continuous slab ballastless track to improve its serviceability in recent years,but the development law of ballastless track diseases after maintenance are still unclear.In order to reveal the deformation and damage laws of longitudinally continuous slab tracks subjected to temperature rise under different maintenance conditions,the simulation methods of four maintenance measures,namely,interfacial adhesive repair,concrete joint repair,post-installed reinforcement,and reflective coating,were proposed,and the initiation mechanisms and development laws of common damage including arching deformation,interface damage,and compression damage of joints of slab tracks adopting different maintenance measures were analyzed.The results show that in the case of adopting a single measure,post-installed reinforcement has the best inhibitory effect on the deformation of the upper arching,which can reduce the maximum vertical displacement of the track slab by 72%;The effect of interlayer adhesive injection is the worst,only reducing the maximum vertical displacement of the track slab by 20.7%;Under four working conditions,namely,no measures,interfacial adhesive repair,concrete joint repair,and post-installed reinforcement,interlayer damage will occur in the middle of the track slab when the temperature rises to around 26℃;When the reflective coating was used or all measures are taken,interlayer damage only occurs in the middle of the track slab when the temperature rises to around 29℃.The research results can provide a theoretical reference for the formulation of long-term maintenance strategies and the maintenance of long-term service performance of ballastless tracks for high-speed railways.