A modern method for reinforcing transition zones on high-speed railway sections, accounting for seismic and train-induced vibrodynamic oscillations
Аннотация
The article presents the deformations occurring at the transition section and damages of different degrees of track structure elements due to different stiffness in the zone of conjunction of the bridge bank piers with the earth bed at high-speed railway sections. The reduction of the coefficient of active pressure arising laterally by means of transferring a part of active pressure of the earth bed to the foundation as a result of reinforcement of embankment with reinforced concrete piles at the places of conjunction of the bridge bank supports and the earth bed of the high-speed railroad section in the seismically active zone is given. The elastic deformability with reduction of impact on the bridge shore support in different seismic activity as a result of reinforced concrete piles reinforcement of embankment at the transition section of the bridge with the earth bed has been determined. And also graphs of increase of angle of internal friction of soil and decrease of pressure coefficient under the action of seismic and vibrodynamic forces are given. Methods for determining the distribution of seismic and vibrodynamic forces arising from high-speed railways on embankments constructed from different soils and geometric dimensions of reinforced concrete piles to reduce them on the basis of graphs are given.