抄録
Areas on each side of overbridges in embankment sections form border zones between the embankment and the girder, where ballast support rigidity varies, and track subsidence tends to occur. Investigations were thus conducted into the influence that ballast support rigidity variation and track subsidence can have on dynamic forces and the characteristics of ground vibration propagation, by means of a parameter study using dynamic analysis models. The effect was also evaluated of countermeasures for ground vibrations generated around the girder.
