矩形大断面沉管隧道照明环境分析研究

Analysis and Research on Lighting Environment of Rectangular Large Section Immersed Tunnel

为研究矩形大断面沉管隧道灯具损坏对隧道照明环境的影响,采用数值模拟方法分析了灯具失效情况下隧道照明环境的变化。结果表明:1)隧道灯具单灯失效与双灯失效对照明环境的影响较小,各参数指标虽有起伏,但都符合规范要求,对安全行驶的影响可忽略;2)三灯失效及四灯失效时,灯具单侧连续失效的照明质量远低于单侧不连续与双侧失效的状况,其中三灯单侧与四灯单侧连续失效的总均匀度值均低于规范要求的最小值,不能满足行驶安全的需要。

In order to research the influence of lighting damage on the lighting environment of the rectangular large-section immersed tube tunnel,the numerical simulation method was adopted to analyze the change of the lighting environment of the tunnel under the failure of lighting.The results show that:1)the single lamp failure and double lamp failure of tunnel lamps have little impact on the lighting environment.Although there are fluctuations in each parameter index,they all meet the requirements of the code,and the impact on safe driving can be ignored.2)In the case of three-light failure and four-light failure,the lighting quality of continuous failure on one side of the lamp is far lower than that of single-side discontinuous failure and two-side failure,and the total uniformity of continuous failure on three side and four-light is lower than the minimum value required by the code,which cannot meet the needs of driving safety.