基于DEMATEL/ISM的高速公路路段脆弱性影响因素研究

DEMATEL / ISM Based Study on Influence Factors to Road Vulnerability of Highway

DEMATEL/ISM集成模型适用于高速公路路段脆弱性影响因素分析。分析时,首先以是否直接影响多条路段为依据,将高速公路路段脆弱性影响因素分为宏观和微观2个层面,用专家打分法确定各因素对脆弱性的贡献度;然后,基于DEMATEL/ISM集成模型建立影响因素层次关系模型,把复杂的路段脆弱性影响因素关系转换为良好的层次结构。研究发现:恶劣气候和地质灾害是高速公路路段脆弱性的深层影响因素,拓扑结构是直接影响因素。

DEMATEiyiSM assembled model is used to analyze the influence factors to road vulnerability of highway. In this paper, we divide the influence factors to road vulnerability of highway into macro and micro aspects based on whether it will affect multiple roads directly, then we use expert scoring method to determine contribution of all factors to vulnerability ; Then we set up influence factors hierarchical relationship model based on DEMATEL/ISM assembled model, and convert complicated influence factors to road vulnerability to fine hierarchical structure. Study shows ： Severe climate and geologic disaster are the main influence factors to road vulnerability of highway, and the topological structure is the direct influence factors.