반복온도하중이 교량상 궤도에 미치는 영향

초록

In case of the continuous welded rail(CWR) track is supported by the railway bridge, the additional axial force is occurred in the CWR due to the track-bridge interaction. And the strength criteria for checking follows design code (KR C-08080). KR code has temperature and vehicle loads consider when analyzing the track-bridge interaction, and each load apply its maximum magnitude. This analysis method may ignores the characteristics of continuous variation of temeperature and repaeated vehicle loads, and there is also the possibility of hysteresis track behavior due to the elasto-plastic behavior of the longitudinal ballast resistance. In this paper, track-bridge interaction characteristics due to cyclic temperature loads are investigated using by the FE analysis.