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山区高速公路选线是一个既包含定性指标又包含定量指标的多目标综合评价问题,它是公路总体设计的关键.根据公路选线的基本原则,结合山区的地形地质条件,分析建立了山区高速公路方案比选的评价指标体系,提出了将层次分析法(AHP)和灰色关联度分析法(GRAP)有机结合,运用在山区高速公路路线方案比选中.利用层次分析法(AHP)确定各指标体系的相对权重,再根据灰色关联度分析法(GRAP)建立其相对应的指标待检向量和指标特征矩阵,计算求得关联度,根据关联度的大小确定最优的路线方案.并以山西省某山区高速公路为例对该方法进行了验证,实践证明该方法用在山区高速公路选线中是切实可行的.
The highway route selection in mountainous area is a multi-objective comprehensive evaluation problem that includes both qualitative and quantitative indicators, which is the key to the overall highway design.According to the basic principles of highway alignment and the topographic and geological conditions in mountainous areas, (AHP) and Gray Correlation Degree Analysis (GRAP), it is proposed to use it in the comparison and selection of the route of mountain highway.Using Analytical Hierarchy Process (AHP) to determine the index The relative weight of the system, and then establish the corresponding index vector and index characteristic matrix according to Gray Relation Analysis (GRAP), calculate the correlation degree, and determine the optimal route scheme according to the degree of relevance. This method is validated by the example of a mountain highway in the province. Practice shows that it is feasible to use this method in highway route selection in mountainous area.