Abstract：Research purposes: With the continuous development of the heavy haul railway in China，the lateral force between wheel and rail is gradually increasing． The track resistance capacity of lateral force has become a key factor of controlling the track stability and train running saftety． Therefore，the study on the corresponding critical lateral force of the track boundary is crucial to guaranteeing the safety of railway transportation．
Research conclusions: The structure model established with the finite element software ANSYS was adopted to analyze the impact of the rail lateral force of heavy haul railway on the fastening stress，lateral deformation of rail head，rail base elevation and rail pad deformation，and the change regulations of deformation and stress of all track components were obtained． According to the simulation of track structure，when the lateral force on rail was bigger than 250 kN，the rail overturn possibly happed．
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2011, Vol. 28 
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