Some Thoughts on Variation of Response according to Longitudinal Track-Bridge Interaction Analysis Methods

摘要

Additional axial stress of the rail and displacement are induced by the influence of the track-bridge interaction when the CWR (Continuous Welded Rail) track is constructed on the bridge. That is the main cause of the restriction of length of bridge deck and an increase in the construction cost. And the track-bridge interaction analysis is performed in order to examine the influence of the interaction. Two analysis methods are proposed in UIC 774-3R according to whether the loading history is considered or not. In this paper, the fundamental study was carried out for inducing an economic design of the railway bridge applying the proper analysis methods. For this purpose, track-bridge interaction analysis was performed on various types of bridges and the variation of response according to each analysis method was analyzed by comparing and analyzing the interaction analysis results.