嘉兴市区快速路中环西路立交方案选型研究

Research on Selection of Interchange Scheme for Middle Ring West Road of Jiaxing Urban Expressway

城市互通式立体交叉是一种在城市快速路上用于连接不同等级道路的交通转换方式,通常由立交匝道组成,可使车辆不受阻碍地从一条快速路转换到另一条快速路,是一种提升城市快速路通行效率和减少交通拥堵的重要交通设计方式。城市快速路互通式立体交叉的选择应综合考虑交通功能、立交层次、环境影响、管线迁改、征地拆迁、交通影响等多方面。文章以嘉兴市桐乡大道快速路工程中环西路立交选型为例,首先分析了互通立交的交通量和案例工程的影响因素,然后提出了不同的城市高架快速路立体交叉设计方案,并进行比选和初设方案优化,以供参考。

Urban interchange is a kind of traffic transfer method used to connect different grades of roads on urban expressways.It is usually composed of interchange ramps,which allows vehicles to smoothly transfer from one expressway to another.It is an important traffic design method to improve the traffic efficiency of urban expressways and reduce traffic congestion.The selection of urban expressway interchange should consider various aspects such as traffic function,interchange level,environmental impact,pipeline relocation,land acquisition and demolition,and traffic impact.Taking the selection of Middle Ring West Road Interchange in Tongxiang Avenue Expressway engineering in Jiaxing City as an example,this paper first analyzes the traffic flow of the interchange and the influencing factors of the case engineering,and then puts forward different design schemes of urban elevated expressway interchange,and compares and optimizes the initial design schemes for reference.