Study On The Safety Evaluation System And Method Of Urban Traffic Tunnel

Urban traffic tunnel is a new-fashioned urban road traffic mode, it has many advantages such as impropriated little land, doesn't destructed the ground sight, need not to steer clear of the buildings on the city ground, cut down the traffic distance. Urban traffic tunnel made a solid traffic mode of urban road traffic, it eliminated the mutual influence between vehicle flow and person flow at the cross of the city, decreased the disturbing of the vehicles on the ground, made the traffic passed the section of the road quickly, reduce the road impropriated time.Many urban traffic located at the trunk road where the city's prosperous zone was and so many people, vehicles passed there every day, assured the running safety of the traffic tunnel was very important to the steady developing of the society and economy of the city. An urban traffic tunnel safety evaluation system must be set up in order to make a synthetical evaluation of the running safety and improve the running safety quality of the traffic tunnel.From a systemic thinking, consult with the principles of setting up a commonly evaluation system, the principles of setting up the urban traffic tunnel safety evaluation system was confirmed at first, then, through the analysis of the characteristic and the structure of the urban traffic tunnel safety system, chosen the indexes by a conjoint way of integrated the qualitative and quantitative, at last, made the indexes quantifiable and assured the proportion of every index by AHP. After this, the urban traffic tunnel safety evaluation was set up.After assured the quantitative indexes, fuzzy math way was chosen to set up a two-grade fuzzy synthetical evaluation model of urban traffic tunnel safety system to evaluate the running safety of a traffic tunnel. At last, the practically value of the study of the founded evaluation system and the evaluation model were proved by the example of Chengdu Hong Xing Road traffic tunnel.