Seismic performance of railway track structures with reduced dynamic stiffness in weak and complex soil conditions

As analyzed by the article, the damage of the railway’s structures by even comparatively weak earthquakes with the magnitude of 5-6 may lead to severe destruction in situations of complicated relief and weak soil. The equation that can be used to find the force of the existing seismic impact includes the active seismic isolation coefficient that has been experimentally established in different soils. According to the outcome of the research, the degree of damping of vibration in water and loose soil layers were determined. The feasibility of minimizing the track dynamic stiffness through prestressed sleepers and fluoroplastic gaskets to the track passing through the galleries have also proved true. The solutions put forward permit a decrease in the mass of reinforcement on the supports of bridges, and on embankments of large height, for excavation of reinforced concrete piles and spacing them further apart. Consequently, the reliability enhancement and economic efficiency of the structures are being increased.