基于模糊语言算子的工程项目施工可靠性评价研究

Study on evaluation of construction reliability for engineering project based on fuzzy language operator

系统可靠性理论与方法是近年来管理科学与系统工程领域的研究热点,引入施工可靠性指标有助于工程项目管理水平的定量评价.结合可靠性概念和工程项目管理的目标体系,提出了工程项目施工可靠性的内涵,基于模糊数学理论对施工可靠性评价标准进行了研究.通过模糊语气算子之间的运算关系获得各模糊子集的隶属函数,根据最大隶属度原则将可靠性取值空间[0,1]分成七个互不包容的评价区间,有助于对工程项目施工状况做出更科学合理的评价,也为工程项目施工可靠性理论与方法研究做了有益的尝试.

System reliability theory is becoming a focus of international management science and system engineering research, and construction reliability is useful for quantitative evaluation. According to reliability and objective system of engineering project, the connotation of construction reliability is defined. Based on fuzzy mathematics theory and language operator, value space of construction reliability is divided into seven fuzzy subsets and correspondingly, seven membership function and fuzzy evaluation intervals are acquired with the operation of language operator, which provides the basis of corresponding method and parameter for the evaluation of engineering project construction reliability. This method is proved to be efficient and accurate by an example and it＇s a useful try on theory and method research of engineering project system reliability.