特大型长联连续梁桥上无缝线路铺设方案研究

桥上无缝线路由于梁、轨的相互作用，钢轨会受到附加纵向力的作用，尤其在特大型长联连续梁桥上钢轨受到的纵向附加力更是不容忽视。本文建立了以轨道、桥梁、支座、墩台、基础为整体结构的纵向附加力计算空间有限元模型，计算了某特大型长联连续梁桥上钢轨的温度力。分析了：小阻力扣件铺设位置、铺设长度对钢轨伸缩附加力的影响；钢轨伸缩调节器铺设位置对钢轨温度力的影响。综合分析结果提出了该特大型长联连续梁桥上无缝线路的铺设方案。

Study on the Laying Plan of Continuously Welded Rails on Super Major Bridge with Large Continuous Beam

Continuously welded rails on bridge are subjected to additional longitudinal force because of the interaction between the beam and the track,particularly on the super major bridge with large continuous beam,where the rail's additional longitudinal force must not be ignored.In this paper,finite element models are established to calculate the additional longitudinal forces of the integrated system consisting of the track,beams,abutments,piers and foundation,and the rail's temperature force on a super major br...