Research On Information System Of The Integrative Management Of Expressway Construction And Maintenance

The integration of expressway construction and maintenance (IMCM) is a brand new management concept in expressway construction and maintenance, which is of vital importance to the realization of expressway resources'optimum effect, the systematization, scientization and modernization of highway managing decisions. The treatise, first, based upon sound analysis of problems existing in current highway construction and maintenance such as Information Island, intuitive decision making and the separation of construction and maintenance, puts forward the concept of integration. It also probes in depth the overall plan of IMCM, the theory of information distribution; IMCM revolved decision-making model and the evaluation and prediction of pavement performance. Finally, it presents the overall plan and recipe for integration system, which provides theoretical and technical approach to the elimination of Information Island, the enhanced rate of data use and improved decision-making level in construction and maintenance.In researching into the overall plan of integration, the author, taking into account the real situation of our country's expressway, advances and defines the concept of IMCM and elaborates on its target, guiding principles, studying content as well as its comprehensive evaluating methods.In researching into the distribution of information resources, the author, after summing up the construction and maintenance models of our country, extracts the integrated managing mode,puts forward the integrated hierarchical information model following the theory of information granularity, sets up and illustrates with real cases the integrated information processing methods on the basis of information fusion technique.In researching into the decision-making model, the author goes deep into life-period cost analyzing model of expressway construction projects, life-period environmental evaluation model and life-period structure reliability model of expressway pavement. In so doing, the author puts forward the overall evaluation model on the foundation of set pair theory and attributes set mathematics theory. In the process of evaluation, the variable-weight method is applied to the indexes, the definitive model of variable weight function is put forward, and the feasibility of the overall evaluation model is experimented.In researching into the evaluation and prediction of pavement performance, the author comes up with and practices the grey and matter element comprehensive predicting models for the utility of expressway road surface by means of analyzing affecting factors to expressway pavement performance along with the application of existing predicting models and the current situation of our country's expressway maintenance.Based on the above exploration, the treatise presents the overall design to the information managing system of IMCM, defines its boundaries, divides and materializes its subsystem, and puts it into construction practice. Both theoretical research and project application indicate that the method proposed in this article can eventually provide scientific and constructive guidance to expressway construction and maintenance strategy.