ANALYSIS OF LONGITUDINAL FORCES OF HEAVY HAUL RAILWAY CWR ON A LONG BRIDGE

With the application and popularization of CWR technology, CWR are gradually laid on heavy haul railways in the cold regions. Based on the finite element software ANSYS, considering the interaction between the tracks and bridge, the CWR model on a long bridge was created to calculate the stretching force, the deflection force and braking force on Long CWR bridge. Computational analysis shows that, setting expansion rail joint can effectively reduce the longitudinal forces of CWR on bridge; setting small resistance fasteners reduces the longitudinal force, but it increases the broken gap value of broken rail; stress situation of long CWR Track is very complex, and it needs considering a variety of factors to determine the optimal structure design projects.