城市道路与铁路交叉方案研究——以兰州市 T018#+T020# 道路与铁路立交为例

Study on Crossing Scheme of Urban road and Railway crossing Scheme for Lanzhou City

城市道路的延伸作为城市扩展的重要组成部分,与铁路交叉方案已成为城市道路建设中的重点和难点。首先介绍了兰州市T018#+T020#道路的工程概况、建设条件以及兰新铁路、兰州至中川铁路的相关情况;其次结合项目特点,针对道路与铁路交叉段提出了上跨和下穿两种方案,并从施工方法、施工期间对交通的影响、景观效果、养护工作量、对起点南山路立交的影响等方面分析了两种方案的优缺点;最后推荐采用分幅上跨方案。推荐方案经铁路部门审查后正在实施,可为类似城市道路与铁路立体交叉工程设计提供一定的参考。

As an important part of urban expansion in the extension of urban roads,the crossing scheme of urban road and railway has become the key and difficult points in the construction of urban roads.The engineeringsituation and construction conditions of T018#+T020#road in Lanzhou City,and the relevant situation of Lanxin Railway and Lanzhou-Zhongchuan Railway are introduced.Combined with the characteristics of the project,two schemes of overpass and underpass for the intersected section of road and railway are proposed.The advantages and disadvantages of the two schemes are analyzed from the aspects of construction method,influence of construction period on traffic,landscape effect,maintenance workload and influence on Nanshan Road Interchange at the starting point.Finally,the framing overpass scheme is recommended.The recommended scheme is being implemented after reviewed by the railway department,which can provide some references for the design of similar urban road and railway grade separation projects.