西南山区公路建设场地模糊分类系统研究

通过对西南山区地理、地质情况对公路建设施工难易和路基稳定性情况的研究,筛选出岩体单轴抗压强度、浅层岩溶和山地类型等6个起主要作用的因素,构成影响因素评价集.借鉴岩体分类经验,将公路建设场地分为5类,形成分类决策评语集.基于隶属函数等效性,研究出各因素在各类型中总体隶属函数的构造方法和确定隶属函数具体形式的算法.应用模糊评判原理,确定了从评价因素集到决策评语集的映射关系,构成了西南山区公路建设场地模糊分类系统.利用该系统研究了某山区公路的第3施工合同段的类型,分析结论被作为设计和施工依据之一.

Research on the Fuzzy Classification System of Mountain Highway Site in the Southwest

By investigating the effects of mountain geographical and geological situation in the Southwest on the hard or easy construction of highway construction and the stable degree of roadbed, six main acting factors, such as uniaxial compressive strength of rock mass, superficial Karst, types of sloping field and so on, were chosen to constitute the evaluation set of influencing factors. Drawing lessons from the classification of rock mass, the highway site was classified into five types, and the evaluation set of classification decision was formed. Based on the principle of equivalence, we studied the algorithm of structural method of total membership function for whole types, and confirmed the specific forms of membership function about all the factors. Using the principle of fuzzy evaluation, the mapping relation from evaluation factor set to decision-making comment set was con- formed, and the system of fuzzy classification of mountain highway site in the Southwest was constituted. Moreover, the third construction contract sector of a certain mountain highway was also studied using this system, and the analytic conclusion was used as the basis for design and construction.