基于老路分类的山区二级公路改扩建工程路线设计探讨

摘要

山区2级公路改扩建工程路线设计时,充分利用老路是节约工程投资的有效途径,故如何利用老路是方案设计中需重点考虑的内容.针对山区老路的特性,将其划分为几种基本路段,并根据各路段的特点,结合地形地质条件、运行速度等控制因素对路线方案设计进行探讨.%In design of reconstruction and extension of secondary highway in mountainous area,it's an effective way to save project investment by making full use of old road,how to use the old road is the key consideration of solution design.This paper,according to the characteristics,classifies old road in mountainous area is into several basic road segments.According to their corresponding features and geological and topographic characteristics,as well as control factors such as driving speed,etc.,discussion were carried out on route design.