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雾对高速公路运营危害性评价研究

DOI: 10.3969/j.issn.1674-0696.2013.02.17, PP. 248-251

Keywords: 雾灾害,运营,高速公路网,危害性指数,foghazard,operation,expresswaynetwork,hazardousindex

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Abstract:

:?应用沪渝高速公路重庆绕城段(G5001)和渝昆高速公路(G85)重庆段上的天气、交通检测设施采集到的信息以及重庆高速公路路网的雾天管理信息,分析了雾对高速公路交通的影响,并对高速公路路网雾区路段的雾灾害严重程度进行了评价。研究表明:不同能见度下雾使G85高速公路重庆段运行车速降低7%~61%,流量损失6%~95%,G5001运行车速降低4%~29%,流量损失24%~93%。综合考虑雾的出现频率和严重程度以及路段交通水平,采用主成分分析及聚类分法建立了高速公路雾灾害严重影响程度指数计算模型,提出雾灾害指数的分级标准。对重庆高速公路网146个管理单元的雾灾害指数进行了评价和分级,确定特别关键路段19个,关键路段24个,次关键路段49个。

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