摘要
根据隧道洞外亮度L2 0 (S)的定义和环境简图计算隧道洞外亮度的原理 ,结合京珠高速公路粤境北段和南段隧道群的工程实际 ,在国内首次提出了采用照度———亮度仪测试隧道洞口环境反光物的亮度 ,按照环境简图计算公式进行数据处理的一种洞外亮度测试的方法。同时 ,通过大量的测试和数据分析 ,为工程设计提供了具体的指导意见和基础数据。
According to determinations of tunnel ambient exterior luminance L 20 (S) and principles of calculating the tunnel ambient exterior by environmental sketch method,combining the practice of tunnel groups on Beijing-Zhuhai Expressway in the north and south of Guangdong Province, this paper first puts forward a method of testing the luminance of environmental reflecting objects at tunnel portal by using a brightness-luminance meter and a method of testing the ambient exterior luminance by data processing according to computing equations of environmental sketches. It presents the detailed guiding suggestions and basic data for engineering designs through lots of tests and data analyses.
出处
《公路交通技术》
2004年第5期117-121,共5页
Technology of Highway and Transport
