Mechanics model of additional longitudinal force transmission between bridges and continuously welded rails with small resistance fasteners^①

来源期刊：中南大学学报(英文版)2004年第3期

论文作者：徐庆元 周小林 曾志平 杨小礼

文章页码：336 - 339

Key words：railway engineering; continuously welded rails on bridge; additional longitudinal force; mechanics model

Abstract: A new mechanics model, which reveals additional longitudinal force transmission between the continuously welded rails and the bridges, is established on the fact that the influence of the mutual relative displacement among the rail, the sleeper and the beam is taken into account. An example is presented and numerical results are compared. The results show that the additional longitudinal forces calculated with the new model are less than those of the previous, especially in the case of the flexible pier bridges. The new model is also suitable for the analysis of the additional longitudinal force transmission between rails and bridges of ballastless track with small resistance fasteners without taking the sleeper displacement into account, and compared with the ballast bridges, the ballastless bridges have a much stronger additional longitudinal force transmission between the continuously welded rails and the bridges.