抄録
In railway tracks, various elastic materials made of rubber are used for the parts of the track such as rail pad to reduce the vibration and impact force. Because the modulus of rubber generally increases as the temperature becomes low, there is a concern that the vibration reduction performance of elastic material decreases at low temperature. Therefore, to verify the influence of temperature, we measured the vibration and noise at the same point on a viaduct in a meter-gauged line in summer and winter. As a result, while some results such that the vibration of structural members under the rail pad increased as the temperature became low, that was consistent with the theory of track pad, were confirmed, some results such that the ground vibration under the viaduct became low when the temperature was low, that was inconsistent with the theory, were also recognized.
