立体交叉与城市交通现代化

立体交叉与城市交通现代化立体交叉与城市交通现代化 摘要：立体交叉是利用跨线构造物使道路与道路（或铁路）在不同标高相互交叉的连接方式。高速道路是交通运输现代化的主要标志之一。而立体交叉又是高速公路必不可少的重要组成部分。随着人口、经济的不断增长，以及交通工业的迅速进展，其城市道路交通运输量在迅速扩大，位于区域经济中心或者交叉部位的城市，成为了道路交通的咽喉部位。因此，道路交通进展能否适应并符合城市现代化速度，成为了城市现代化建设的重要部分。单一平面交叉道路已经不能满足日益增长交通量的需求，因而，立体交叉道路，成为现代化城市解决交通运输问题的一个重要措施。 关键词：立体交叉;高速道路;交通运输;桂林 Abstract: The road and road intersection is the use of cross line structure ( or railway ) in different elevation cross connection. High-speed road is one of the main signs of modern transportation. The interchange is an important part of the expressway essential. With the continuous growth of population, economy, and the rapid development of transportation industry, the city road traffic in the rapidly expanding, in the regional economic center or cross parts of the city, become the throat of road traffic. Therefore, the development of road traffic is able to adapt to and meet the speed of city modernization, has become the most important part of the modernization of the city. Single plane intersection road has been unable to meet the growing traffic demand, therefore, stereo cross road, become a modern city is an important measure to solve the transportation problem. Keywords: intersection; highway transportation; Guilin; 中图分类号：U412.35+2.1 文献标识码：A 文章编号： 立体交叉概述 立体交叉主要由跨线构造物、正线、匝道、出口与入口、变速车道、辅助车道、匝道端部、绿化地带、集散地带等组成。 1.1 分类及基本形式 立体交叉根据交通功能及有无匝道分为两大类，即分离式立体交叉和互通式立体交叉。互通式交叉分为不完全互通、完全互通和环形...