【摘要】 上海长江大桥预留轨道交通并铺设无缝线路,桥墩纵向刚度直接影响钢轨强度。通过3种不同铺设方案的综合比较,提出大桥引桥部分采用双固定墩设计,这样调节器铺设数量最少,对已完成施设的大桥改动也很小。采用两种不同的计算方法对大桥每联钢轨附加应力逐一检算,结果可行。更多还原

【Abstract】 The Shanghai Yangtze River bridge is reserved for the layout of light rail track and is planned to lay gapless track on it.The longitudinal stiffness of the piers will directly affect the strength of the rails. On the basis of a comparison between three options of layout rails, it is proposed that on the section of approach bridge coupled-fixed piers should be adopted so as to minimise the number of regulators and the revisions for the original detailed bridge design. Two different methods were employed to check the secondary stresses in each rail on the bridge, and the results were satisfactory.更多还原