Experiment And Calculation Analysis Study Of Reflective Material Auxiliary Energy-saving Lighting In Tunnels

Highway tunnel as an important transportation infrastructure has a positive role in promoting economic and social development.Nearly 10 years,road tunnels have achieved a major breakthrough in quantity and quality because of the strong demand of transportation and infrastructure with the economic development.Tunnel as a special semi-enclosed structure needs to set artificial lighting inside.The demand of tunnel lighting design is based on current "Highway Tunnel Lighting Design Rules"(JTG/T D70/2-01-2014),while the given methods can not meet the actual tunnel lighting environment,leading to the design of illumination does not meet regulatory requirements or resulting in a waste of energy.Therefore,this article from wall reflective material,outside natural light and car lights 3 aspects start,a comprehensive analysis of multi-light tunnel illumination variation,thus a more comprehensive study of the tunnel lighting system.The main contents and results are as follows:? Firstly,making an 1:1 experiment on sidewall material impact on the tunnel illumination,combined with different lighting,different lighting distance,different sidewall material,in a large number of measured data based on regression analysis,in-depth analysis wall material reflection effects on reflectance index.In addition,Through three light sources and five working conditions fitting incremental reflection coefficient apply to all types of reflection in the sidewall material,and as the optimization of existing calculation formula.Calculation for the future tunnel road illumination is more realistic to provide a reference.? Using DAILux build a three-dimensional simulation tunnel model,a combination of different times,different sky models,different sidewall material,study road illumination variation of north-south tunnel entrance,fitting the road illumination expression based on large amounts of data,provide a reference for future lighting design of tunnel inlet and outlet sections.? Tunnel experiments about light type combining three different wall materials,in-depth study on the tunnel center line lights,middle lane,curbs and side walls 0.5 meters high illumination effects variation.? Combination of the lighting experiments and three-dimensional simulation above,five aspects of the calculated parameters,lighting,lighting mode,sidewall materials and shading construction,proposeing tunnel energy-efficient lighting design chose advise under multi-light condition,provide a theoretical basis for green light and energy saving of tunnel project.