Based on the finite element method and the theory of interaction between beam and rail, for girder bridge and the simply supported girder bridge which are common rail continuous bridge as an example, this establishes on railway line - bridge - bridge pier integration calculation model and analyzes the influence of the type of load and load range on the bending force law.

Based on the theories of the method of the finite element and the interaction between beam and rail, the common railway bridge: the continuous girder bridge and the simply supported girder bridge as an example, set up the integration of the calculation model of the line-bridge-pier on the continuous welded railway bridge, through the calculation software of Bridge Continuously Welded Rail (BCWR2010), the regular pattern of the effect of the bending force and the regular pattern of the longitudinal displacement distribution of the rail and bridge are analyzed.

In recent decades, with the acceleration of population flowing in China, large and medium-sized cities to speed up the construction of urban rail. Relatively high speed railway, the requirement of the urban rail is relatively low, so it can be designed on the basis of high speed railway track structure for urban rail transport, this gives the designer the design of large space;Each city urban rail structure more or less differences. Especially fastening system is various, even in the same line also exist different fastening systems.Because Chinese fastening system in the subway is various, not a fixed is widely used fastening system;This paper, the DT series fastening in subway system has carried on the simple summary. Make a reference for fastening researchers.

Due to the large and medium-sized cities in our country is more; the urban rail speed is low and the environmental protection high capacity requirements. Each city urban rail structures more or less differences. Especially fastener system is various, even in the same line also exist different deduction system; Because the subway in China fastener system is various and not a fixed is widely used fastener system; The paper gives a simple summary of subway common shock absorber fasteners in China. I hope it can give a reference to researchers on fasteners.