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杜步岭段是清连一级公路地形最复杂、平纵面指标最差的路段,由于长距离连续的急弯陡坡,道路交通环境十分复杂险峻,经常发生特大交通事故,实施升级改造时急需解决其道路交通安全和通行能力的问题。全面介绍了路线总体方案研究、新建下行线在不良地质路段工程方案的选择、既有桥隧构造物的利用,路线方案与互通立交、辅道方案的有机结合,以及基于安全性评价的技术指标运用等方面的创新思路。
Due to the long and steep sharp steep slopes, the road traffic environment is very complicated and dangerous, and frequent road traffic accidents often occur. Due to the urgent need to solve the problems in the course of upgrading, Traffic safety and accessibility issues. This paper introduces the research of the general scheme of the route and the choice of the construction project of the new downstream in the bad geologic section. It not only combines the utilization of the bridge and tunnel structures, the combination of the route scheme and the interchange, the secondary road scheme, and the technical indicators based on the safety evaluation Use and other aspects of innovative ideas.