基于DEA分析的生命线网络节点抗灾相对可靠度评估

对于生命线工程网络系统而言,合理分析和评估其带有网络特征的节点可靠度,比只研究单体可靠度更具实际意义.基于数据包络分析法(Data Envelopment Analysis,DEA)有效性分析的思想,提出了生命线网络节点抗灾相对可靠度的概念.从生命线工程在灾害环境下着重体现出的系统性和网络性出发,考察网络中的节点所能实...

Disaster-preventing Relative Reliability Evaluation of Lifeline Network Node Based on DEA

For the lifeline engineering network systems,analysis and evaluation of node reliability with net characteristics is more realistic.Based on effective analysis of Data Envelope Analysis(DEA),the authors present a new concept named disaster preventing relative reliability for lifeline network node.It is focusing on the match degree between the resource supply and relevant spatial structural importance,which means the reliability of function relating to the structure.In the research,the authors take the actual demand and pressure in the pipeline as the input parameters of DEA,and take the structural importance as the output.The structural importance is calculated from the medi-centre evaluation.Application of the relative reliability method is done to get the evaluating results and the adjusting values to make the ineffective units change into ant effective.The adjusting values could be taken as the assist decision-making of technical optimizing and improvement of network.The relative reliability could also be taken as the complementarity of the performance estimate of the engineering network system.