The new adjustable sleeper is a new structure which can be adjusted with high precision and high efficiency.The sleeper body structure is provided with embedded steel plate,casing and nut.Through connecting the bolt and the upper adjustable support,and inserting the adjustment plate between the sleeper body and the adjustable support,the purpose of rapid adjustment of uneven settlement is achieved.However,due to the addition of embedded casing and connecting bolts,we need to study whether the bearing capacity and fatigue durability of this new structure and bolt pull-out resistance can meet requirements of the heavy-duty and highly frequency used mechanical.Through relevant experimental research,the reliability of this new kind of sleepers is verified.