Study On Practical Bridges Strenghtening Technologies On County And Township Roads In Three Gorges Reservoir

Bridge is a very important part of transportation, a significant chain to connect the road net. With the development of our national economy and highway transportation, rapid increase of traffic amount, bridges have entered into the maintenance periods. The deterioration and maintenance bridges have become major concerns. It is of great significance that to develop practical reinforcement and treatment technology for the old dangerous bridges which had existed security risks.In this paper, a large number of stone arch bridges are studied on the roads of county and township in Three Gorges Reservoir. First of all, explained the common diseases of the stone arch bridge from the main arch, Spandrel Construction and pier and abutment, on the basis of that analyzed the characteristics of the disease and the formation reasons as well as its harmful. Such provided a basis for choosing rational reinforcement technology and construction methods .Secondly, introduced the reinforcement treatment technologies commonly used at the lower part of the structure and the upper part of the structure based on the disease of the stone arch bridge. Detailed information of the reinforcement mechanism, applicable conditions and the advantages and disadvantages on each kind of reinforcement technology had been done. And proposed the idea of optimization of scheme and comprehensive treatments. The third, intensity indices and rigidity indices of the reinforced bridge, which will play an instructive role in the technology and benefit of analysis and design of reinforced, construction process analysis of reinforced and the entire process of bridge optimization for the stone arch bridge. Finally, through the analysis of technical and economic indicators of treatment on the typical Stone arch bridge, combined with the most active areas of expert system at artificial intelligence research fields in the current, a stone arch bridge treatment expert system with expert analysis and decision-making functions had been set up. This had offered great convincement for the management workers of bridge.The research of the thesis, artificial intelligence expert system was creatively applied to bridge reinforcement technology. through the establishment of reinforcement and treatment expert system of stone arch bridge to replace the preliminary analysis and the decision-making to the danger old bridge of bridge experts. This will play a positive role in promoting the bridge management to develop towards intellectualization.