改扩建工程风吹雪路段护栏改造方案探讨

Discussion on Renovation Plan of Guardrail in Snowdrift Section for Reconstruction and Extension Project

为了充分利用既有道路,保证横断面中几何设计参数符合现行标准规范要求,内蒙古地区的部分一级改高速项目建设中,中央分隔带宽度必须调整到1.5m以内,这对选择护栏的形式提出了很高的要求。文章针对整体式混凝土护栏并配套设计雪天安全保障、开发新型中央分隔带新型SSm级护栏两种方案进行比选论证,研究成果对类似项目的选择有一定的参考。

In order to make full use of the existing roads and ensure that the geometric design parameters in the cross section meet the requirements of the current standard specifications, the width of the central separation belt must be adjusted to less than 1.5m during the part of construction of First-grade highway converted to expressway in Inner Mongolia, which puts forward high re- quirements for the form of the choice of gnardrails.In this paper, the comparison and demonstration of two schemes for the design of the integral concrete gnardrail matchingwith design for snow safety protection and the development of a new SSm grade gnardrail are carried out. The research results have some reference to the selection of similar projects.