Health-condition Assessment Of Highway Tunnel

In recent years,with the rapid development of our economy,the traffic network has been improved,the number of traffic tunnels is increasing.Due to the problems of geology,design,construction and cost,material performance and earthquake,the operational safety of the tunnel is becoming more and more prominent.The disease of tunnel operation will directly affect the normal performance of the tunnel and even endanger the safety of the road.In the face of the increasing number of tunnels,it is important to determine the reasonable maintenance and repair of tunnel health.This paper establishes the evaluation index system for the health status of operation tunnel through the regular inspection data of 286 tunnels and the technical specifications of highway tunnel maintenance.The comprehensive weight of the evaluation index is determined by entropy weight method and analytic hierarchy process.A total of 286 tunnels were counted to check the disease data.The boundary value of each indicator is determined.The characteristics of various indicators of disease and disease were calculated.Three numerical characteristics of cloud models of various indicators are determined.The forward normal cloud generator was developed using matlab.The corresponding cloud model is constructed by using the forward normal cloud generator to form a complete evaluation system.Based on the theory of cloud model,a comprehensive evaluation model of the health state of operation tunnel was established.Introducing the use of evaluation system through field engineering examples,and analyzes the advantages and disadvantages of the new evaluation system in practical use:1.Improving the specification evaluation result when the diseases aresevere,but the degree of diseases is slight2.Constructed tunnel health cloud model,The fuzziness and randomness of tunnel classification are taken into account,Models have predictive properties.But in the case of extreme diseas,the model determines that the probability is very small,the degree of certainty is small,It will not be able to properly assess its health3.The weighted certainty of various indicators in the evaluation process of the evaluation system reflects the extent of the impact of each indicator on the health of the tunnel.4.The cloud model generates a predictive evaluation model based on three numerical characteristics of a cloud generator.The degree of certainty is a wave number.However,the overall trend size change is not very important to evaluate the results...