论文部分内容阅读
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 study the method of measuring and calculating the international flatness index of cement concrete pavement with grooves, the pavement with different power spectral density was simulated. According to the measurement methods of precision level and laser point light source, the international roughness index of each grade pavement is given. The research shows that the international flatness index obtained by distance measurement using laser point light source is larger than that obtained by the precision level measurement. This phenomenon is more pronounced in high-grade pavements. Through the comparison of different length laser line light source measurement method, it is recommended to use the length of 20mm laser flatness measurement instrument.