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基于等效光幕亮度理论的隧道入口段亮度计算方法

Keywords: 隧道工程,隧道照明,等效光幕亮度,数值积分,入口段亮度,适应亮度

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Abstract:

为了获得更加合理的隧道入口段亮度设计值,首先分析了隧道入口段亮度的确定方法,指出了Adrian和Augdal提出的等效光幕亮度计算方法中,都因为忽略了某些计算项而造成得到的极坐标圆环边界视角存在一定的误差;为解决该问题,提出采用数值积分的方法确定各圆环边界的对应视角,并给出了计算得到的各圆环边界视角值和由此得到的等效光幕亮度计算式;以重庆某隧道为例,采用基于数值积分的等效光幕亮度计算式和该隧道洞外景物亮度计算得到了该隧道的入口段亮度。

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