Performance analysis of slab track structures on long-span high-speed railway bridge

摘要

Long-span railway bridges tend to bear large deformation under complex loads. The performance of slab track structures on the long-span bridge is not clear.To research the performance, a FE model is established. The most unfavourable upward and downward deformation of the bridge under complex loads areconsidered. The stresses of the slab, self-compacting concrete, and base slab are calculated and analysed. Curvature of bridge deformation under the mostunfavourable condition is calculated. The relationship of track stress and bridge deformation curvature is discussed. To reduce the stress of the slab trackstructure, a rubber mat is designed to be installed between track structures. The results can be used as a reference for railway track design and maintenanceworkers.