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基于未确知测度理论,建立高等级公路安全性等级评价和排序模型.首先,以影响高等级公路安全性的主要因素来确立评价指标体系和评价标准;然后,根据实测数据建立各影响因素的未确知测度函数,并利用信息熵理论计算各影响因素的指标权重,依照置信度识别准则判定等级;最后,得出高等级公路安全性评价结果.评价方法能解决高等级公路安全性评价中诸多因素不确定性问题,还可以按安全程度排序.将该方法应用于新疆4条高等级公路的安全性评价并与传统的模糊综合评价法比较,结果表明,该方法科学合理,意义明确,可以在实际工程中推广应用.
Based on the theory of unascertained measure, the evaluation and ranking model of high-grade highway safety level is established.Firstly, the evaluation index system and evaluation criteria are established based on the main factors that affect the safety of high-grade highway. Then, based on the measured data, And the index weight of each factor is calculated according to the theory of information entropy, and the level of judgment is determined according to the confidence level. Finally, the safety evaluation result of high-grade highway is obtained. The evaluation method can solve the problem of high-grade highway safety evaluation Many uncertainties can also be sorted according to the degree of safety.This method is applied to the safety evaluation of four high-grade highways in Xinjiang and compared with the traditional fuzzy comprehensive evaluation method, the results show that the method is scientific and rational, the meaning is clear, Can be popularized and applied in practical projects.