高速公路路面功率谱

Expressway pavement power spectral density

随着路面测试技术的不断完善 ,尤其是激光技术的广泛应用 ,对路面功率谱进行精确分析成为可能。对路面长期性能研究中大量路段数年实测平整度资料进行功率谱分析 ,认为路面功率谱可深刻反映路面性能 ,是研究路面性能、汽车 -路面动力学的良好指标 ,但 ISO模拟公式及分级标准不适用于高等级公路 ,因此对功率谱分级方法进行了改进 ,并提出功率谱面积分级法。

With the development of pavement testing equipment, especially with the usage of laser equipment,it is possible to analyze pavement power spectral density(PPSD) exactly.Based on the analysis of testing data of long term pavement performance, it is concluded that PPSD is a good tool to analyze the pavement performance and auto-pavement dynamic loading. The limitation of ISO standard was also discussed, and a better pavement classification method with PPSD area was promoted. 3 tabs,5 figs,4 refs.