The Research Of Bridge Engineering Safety Monitoring And Controlling Assistant Decision-making System

Based on the thought and experience of assistant decision-making system, the application of Object Oriented Programming technology and synthetic evaluation technology in bridge safety monitoring assistant decision-making system are discussed. Combined with the status of development and research of safety monitoring assistant decision-making system, and the character of RunYang bridge, the model, model base management system, assistant decision-making and visualization of safety monitoring data of lower part structure of RunYang bridge safety monitoring assistant decision-making system are studied widely. The main contents of the paper are following:1. Combined with the development of RunYang bridge safety monitoring system, assistant decision-making system structure of "four-base, three-systems, two-form" are analyzed. General structure, function of system and some critical technology used in the system development are studied.2. The factors original types of bridge statistical model are studied. The statistic model is established. Then the useless factors are filtered by recursive regression method and the best statistic model is established.3.The methods of establishing dynamic model and integrated statistic model are brought forward, and the theory and methods of establishing gray model are studied. In the same time, the storage architecture of OOP model, the structure and the design of model base management system are discussed.4. The bridge safety assessment rules are deduced to judge whether the bridge monitoring data and information are abnormal. The methods of detecting and analyzing the abnormal data are introduced. The comprehensive safety degree of bridge is obtained by making recursive regression of surveying point safety degree using the method of analytic hierarchy process. Based on the behavior classification, the bridge local and holistic behavior are estimated, and assist decision-making are provided to the bridge management according to estimated results.5. According to RunYang bridge engineering, the OOP technology is used to designing and developing RunYang Bridge safety monitoring assist decision-making system. The system makes the setting out surveying and safety monitoring of lower part structure RunYang bridge realize intelligence data management, information analysis and assist decision-making. Bridge management with reliable base is provided and the bridge construction qualities and safety status can be judged and decided.