摘要
为研究存在刻槽的情况下,水泥混凝土路面国际平整度指数的测量与计算方法,模拟了不同功率谱密度的路面。按照精密水准仪和激光点光源的测量方法,给出了各等级路面的国际平整度指数。研究情况表明,使用激光点光源的测距方法得到的国际平整度指数大于精密水准仪测得的结果。该现象在高等级路面中更为显著。通过对不同长度激光线光源的测量方法的比较,建议使用长度为20mm的激光平整度仪进行测量。
In order to know the measurement and calculation of International Roughness Index as the grooved PCC pavements,test roads with different power spectral density are simulated.The International Roughness Index as all kinds of pavements is calculated by precise level and point source laser sensor.The results shows that IRI calculated by point source laser sensor is greater than that obtained by precise level.This phenomenon is more significant in high-grade pavements.By comparing the different length of line source laser sensor,it is suggested that using 20 mm length of line source to survey International Roughness Index as the grooved PCC pavements.
出处
《公路》
北大核心
2016年第9期263-266,共4页
Highway
关键词
国际平整度指数
水泥混凝土路面
刻槽
激光传感器
线光源
International Roughness Index
cement concrete pavement
grooving
laser sensor
line source
