城市轨道交通桥梁墩台纵向线刚度限值问题的研究

摘要:

本文首先阐述了轨道桥梁梁轨相互作用的一些概念、研究现状以及存在的问题，接着对城市轨道交通桥梁墩台最小纵向刚度的限值的制定的依据、演变以及和铁路桥梁一些区别做了分析比较，对公轨合建桥梁中公路车辆制动力对轨道结构的作用机理做了计算与分析，最后对地铁规范中的轨道交通桥梁墩台纵向刚度限值条文合理值提出了看法与建议。

Abstract:

This paper first expounds some concepts, research status and existing problems of beam-rail interaction of rail bridges, and then discusses the basis, evolution and some differences from railway bridges for the establishment of the minimum longitudinal stiffness of urban rail transit bridges. Based on the analysis and comparison, the effect mechanism of the braking force of the highway vehicle on the track structure in the highway-rail combined bridge is calculated and analyzed. Finally, the opinions and suggestions are put forward on the reasonable value of the limit value of the longitudinal stiffness of the pier and abutment of the rail transit bridge in the subway code.