Half-space response to trains moving along curved paths by 2.5D finite/infinite element approach

For a train moving along curved path, centrifugal forces are induced in addition to gravitational loads. In this paper, the 2.5D approach for loads straight path is extended treating both vertical and horizontal path. Firstly, closed-form solutions problem derived cases of Then, with finite/infinite elements Cartesian coordinates summarized. By approximating by number small chordwise segments using simulate each segment, displacements global polar obtained summing up those segment local coordinates, considering time lags direction changes. linear systems, responses due radial can be computed separately. numerical simulation, theory presented will verified two typical cases. The frequency-splitting phenomenon found exist loads, as well over response force cannot ignored, displacement outside railway track larger than that inside. Such an effect should considered design paths highspeed railways. method herein adopted solve problems varying radius curvature.