公路软基处理方案优选的熵权模糊物元决策法

Selection of alternatives of weak subgrade treatment using entropy-based fuzzy matter-element decision analysis method

针对目前公路软基处理方案优选决策中存在的不足,将模糊物元分析应用到公路软基处理方案优选决策中,建立基于熵权的模糊物元决策方法。该方法把各种软基处理方案作为物元的事物,用方案的各项评价指标及其相应的模糊量值构造复合模糊物元。采用熵权与决策者的主观权重相结合的方法确定评价指标的综合权重,使之既能反映决策者的主观偏好,又能反映指标的客观分布特征,使权重确定更加合理。通过计算各比较物元与标准模糊物元之间的海明贴近度来实现方案的排序与择优。最后,以苏嘉杭高速公路软基处理方案优选为例,结果说明该方法是有效、可行的。

Aiming at the shortcoming of traditional decision making methods of selection of alternatives of weak subgrade treatment, a new procedure to select alternatives of weak s e treatment using entropy- based fuzzy matter - element decision analysis method was developed based on the fuzzy matter- element theory. A compound fuzzy matter - element was founded by integrating evaluation criteria and fuzzy values of matter - elements. The synthetic evaluation criterion weight was determined by combining the entropy weight and the decision - maker＇ s subjective evaluation criterion weight. This weight determination method systematically considers the objective factors of the decision information and the subjective factors of the decision - makers, which makes the synthetic weight more rational. The optimal weak subgrade treatment technique was achieved through calculating Hamming simdilar approach degree between the fuzzy matter- element and the standard fuzzy matter - element. The case study, which is about selection of alternatives of Sujiahang Expressway weak subgrade treatment, indicates that this new procedure is effective and feasible.