Design Method Of The Awning In Highway Tunnel Entrance Based On Driver’s Viewpoint Illumination

The number of highway tunnels in China has increased year by year,but the tunnel section has always been the multiple highway traffic accidents section.In recent years,a lot of vicious tunnel accidents have aroused widespread concern from all walks of life.It is very important to analyze the causes of tunnel accidents and to take effective engineering measures to reduce the traffic accidents.In this paper,a large number of tunnel traffic accident data are analyzed,and the "black hole effect" is thought as one of the main reason for the high accident rate at the entrance section of the tunnel.The mutation of the driver’s viewpoint illumination is the root cause of the "black hole effect".According to the visual perception characteristics of the driver,designed a pilot scheme for the visual perception of the tunnel entrance driver,Taking the 17 tunnels of the mazhao highway in yunnan province as an object,The visual perception and viewpoint illumination data of a large number of drivers are measured by experiments,using the method of constructing the classification model,put forward driver’s visual perception of light and shade classifying index in tunnel entrance section.Analysis of a variety of tunnel entrance lighting scheme,choose awning as the effective engineering measures to reduce the mutation of driver’s viewpoint illumination.Construction of tunnel and sunshade model,simulation of driver’s viewpoint illumination,use conform to “Well adapted” level corresponding parameter change in driver’s visual perception of light and shade classifying index in tunnel entrance section as requirement,determined Alubo tunnel awning light environment design scheme,put foewarded the scheme include structural design,and analysis of structural security based on Midas.Investigated driver’s viewpoint illumination change in operating Alubo tunnel awning,contrasted and made sure that awning has obviously effect of reducing "black hole effect".Use T test and wilcoxon test analysis of the difference between the simulated data and the measured data,make sure there is no significant difference between simulated data and measured data,and Ecotect Analysis has high simulation reliability.