对称配光照明下的公路隧道眩光指标研究

Research on the Glare Index of Highway Tunnel under Symmetrical Lighting

在公路隧道照明中,不当的灯具配置将会导致令人眼不适的眩光,良好的隧道照明系统设计不仅需要提供足够的路面亮度和合适的亮度均匀度,还应尽量降低灯具产生的眩光对驾驶员行车的影响程度,提高安全性和舒适性。为此,本文运用照明分析软件DIALux4.13对公路隧道照明系统的常用眩光指标——阈值增量TI进行相关数值模拟,选取两种对称配光曲线,在较高的灯具总光通量(9000 lm)一定时,探究并分析双车道(8~10 m布灯间距、灯具发光面法向角度25°)和三车道(6 m布灯间距、灯具发光面法向角度35°)下的各车道阈值增量TI。研究结果得出,所有工况均表现出较低甚至为0的阈值增量TI值,满足相关规范规定的不大于15%的要求,不会对驾驶过程中的人眼造成不舒适的眩光感受。

In road tunnel lighting,improper luminaire configuration will lead to uncomfortable glare.A good tunnel lighting system design not only needs to provide sufficient road brightness and suitable brightness uniformity,but also minimize the glare generated by the luminaires that are harmful to driving.The degree of influence of the driver’s driving improves safety and comfort.For this reason,this article uses the lighting analysis software DIALux4.13 to perform related numerical simulations on the common glare index of the highway tunnel lighting system—threshold increment TI.Two symmetrical light distribution curves are selected,and the total luminous flux(9000 lm)of the higher luminaire is one.Timing,explore and analyze the threshold increment TI of each lane under two lanes(8~10 m light-emitting surface normal angle 25°)and three lanes(6 m light-emitting surface normal angle 35°).The research results show that all working conditions show a low or even zero threshold increment TI value,which meets the requirement of no more than 15%specified in the relevant regulations,and will not cause uncomfortable glare to the human eyes during driving.