Study Of Diagnosis Method And System For Health Condition Of Highway Tunnel

With the large-scale construction of highway tunntl in China, the problem ofhighway tunnel disease is quite serious. However, since maintenance technique forhighway tunnel in China is fall behind, the assessment of health condition forhighway tunnel is still qualitative and there is a lack of quantitative diagnosis methodand system. So a set of quantitative diagnosis method and system for health conditionof highway tunnel by which quantitative diagnosis for health condition of highwaytunnel and scientific management for highway tunnel are realized is carried out in thisdissertation. Throughout the whole dissertation, there are main research achievementsas follows:(1) Based on the rules of studying out the diagnosis index of diagnosis indexsystem, main structural breakage forms of highway tunnel are detailedly analyzedand diagnosis indexes in diagnosis index system for health condition of highwaytunnel are studied out. Then diagnosis index system for health condition of highwaytunnel is founded according to the idea of AHP.(2) Accoring to analyzing existing division menthods of tunnel health grade andtunnel health grades, the fourth-class division method is adopted for division ofhighway tunnel health grade. And highway tunnel health grade is founded based onfourth-class judging grade of special examination for highway tunnel in our couctry.(3) The qualitative and quantitative judging criteria for lining crack, waterleakage, lining deterioration, cavity hehind lining, lining deformation, lining moving,lining settlement, lining scaling and lining spalling are gived.(4) Characteristic of weight of diagnosis index of diagnosis index system forhealth condition of highway tunnel is analyzed. Multiplication scale method is usedto put forward index weight of index layer. Accoring to the index weight of indexlayer and samples data, fuzzy theory and artificial neural network is used to putforward index weight of rule layer.(5) Several important problems of the method of fuzzy comprehensive assessment such as determination of membership function, selecetion of fuzzyoperator, and vector analysis of fuzzy comprehensive assessment result are analyzdand the model of fuzzy comprehensive assessment for health condition of highwaytunnel is founded to realize the quantitative comprehensive assessment of healthcondition of highway tunnel. And the assessment model is introduced through anexample and a case.(6) The development target, development software, function, main characteristi-cs and work flow of diagnosis system for health condition of highway tunnel areintroduced, and the development process of highway tunnel disease database isdetailed introduced. Finally, through the application of the system to a case, thevalidity of diagnosis method for health condition of highway tunnel and thepracticability of diagnosis system for health condition of highway tunnel are verified.