收费站和隧道净距受限条件下山区高速公路立交方案设计

Interchange design of Expressway in Mountainous Area with Toll Spacing and Tunnel Spacing Limited

山区高速公路互通立交受城市规划、地形和既有设施等控制因素的限制,其互通设计难度大且设计过程复杂。针对渝遂高速公路扩能项目(北碚至铜梁段)中起点歇马枢纽互通和主线收费站的方案设计,从功能、工程规模、施工难度、各部门意见等方面分析隧道和收费站在净距受限条件下,山区高速公路互通立交方案设计思路,并通过对4个设计方案的综合比选,将综合评价最优的方案Ⅳ作为推荐方案。

The expressway interchange in mountainous area is limited by the control factors such as urban planning,topography and existing facilities,so its design is difficult and the design process is complex.This paper is aimed at the conceptual design of the Xiema interchange and main line toll on the Chongqing-Suining expressway expansion project(Beibei to Tongliang) and the design of the main toll station.From the aspects of function,engineering scale,construction difficulty and opinions from various departments,the paper analyzes the design idea of the interchange of mountain expressway with limited spacing of tunnel and toll.Through the comprehensive comparison and selection of the four design schemes,the best comprehensive evaluation scheme IV is taken as the recommendation scheme.