The South Highway Tunnel Structure Performance Experts Health Diagnosis System Development

Currently under construction in the Guangxi Zhuang Autonomous Region h ighway14lines, the total mileage1485kilometers, the total investment at a roug h estimate is85.6billion yuan, including155of road tunnels in a total, and more than6billion yuan in tunnel project total investment.In the present situation, it c an clearly be seen that highway tunnel will be faced with the maintenance at pea k after about10years of operations, which leads to a difficult maintenance tasks in the future. Therefore, establishing the quantitative south highway tunnel structure performance health diagnosis model and the task of expert system is extremly impendent. Researchs on this paper includes:(1)About the South highway tunnel damages features, causes and influence, etc do thorough investigations, put forward the disease classification method and different diseases related diagnosis index, build a highway tunnel structure performance health diagnosis index system; combining tunnel disease classification method at home and abroad, the method of highway tunnel divided into five diseases level and category five division method divided highway tunnel structure health level.(2)References to China railway tunnel and foreign (Japan, the United States and Europe etc) highway tunnel maintenance standards, in our country highway tunnel management launch a research work on the basis of the appearing disease survey, set up the South highway tunnel structure performance index of health diagnosis criteria to judge.(3) The diagnosis index in the South highway tunnel structure performance health rating the weight value of the research, using product standard degree method to establish the scale weight for the bottom; taking the weight of Tunnel disease parameters and Orthogonal design method to input data, and determine its weights by BP neural network, GRNN neural network and fuzzy neural network for the interface layer.(4) Summarize the health comprehensive evaluation method, set up evaluation model of the South highway tunnel structure performance health status——level3Comprehensive Evaluation Model, and then analyze tunnel structure health status by the engineering example.(5) Develop the South highway tunnel structure performance health diagnosis expert system. Then analyze structure performance health in the South highway tunnel using this system to verify the evaluation of the feasibility of the system, and keep the future work more scientific and reasonable by a immediate feedback to the design, construction, and management.