Structure Health Risk Perception And Diagnosis Of Operated Subway

With the large-scale of urbanization and the expansion of urban rail transit network,the subway has become one of the most convenient way to travel.However,with the combined action of internal factors and external environment,kinds of problems appeared during the process of metro operation,which has attracted the attention of people and scholars.Large-scale construction and operation of subway started relatively later in China,for the lack of related research system and the ability to carry out structural health risk perception and diagnosis of operated subway on the basis of kinds of intelligent data mining methods is relatively weak.So it is of great significance to explore the mechanism between the damage and kinds of influencing factors of the subway,and study the structural health risk perception and diagnosis of operation subway on the basis of kinds of intelligent data mining methods.With the theory and study of kinds of scholars,the structure damage mechanism of operation subway has been analyzed,and an evaluation index system covering 20 internal indicators and five dimensions,which are the local disease,the structural durability,the permeable water,the external environment and the other,has been put forward.The continuous indicators are divided into five discrete intervals with the improved cloud model.Seven redundant indicators have been reduced with genetic algorithm on the basis of rough set and the software of Rosetta,to realize the structural health knowledge discovery of operation subway under uncertain conditions.The theory of multi-dimension cloud model and Copula function have been combined to establish the multidimensional cloud-Copula model and calculate joint membership degree to realize the structural health risk perception of operation subway under the condition of interdependence.At last,the joint membership degree has been transformed into the basic reliability distribution,and the traditional D-S evidence theory has been improved to carry out two-level multi-source information fusion,to get the structural health risk assessment of operation subway with the action of multi-sensor.Monte Carlo simulation has been used to get the sensitivity factors,which can provide basis for later decisions and enhance the effectiveness of management.