高精度断面仪在高速公路平整度检测中的应用

Application of High Precision Section Instrument in Expressway Roughness Detection

路面平整度是用于评定公路技术状况较为重要的一个指标。针对现行检测规程中四种平整度检测方法的适用性问题,通过引入高精度断面仪,依托广佛肇高速公路平整度专项检测工程,通过方差分析理论对高精度断面仪的使用状况进行了分析,表明测试速度对测试结果有一定影响,测试方向、采样间距及一定范围内的路表温度对测试结果没有显著影响。在此基础上,应用统计分析理论进一步分析,表明测试速度为3 km/h、采样间距20 m时,测试效果最优。

Pavement roughness is an important index to evaluate highway technology conditions. In view of the applicability of four kinds of roughness detection methods on the current testing procedures,in this paper,by means of high-precision section instrument,being rely on roughness detection for Guang-fo-zhao Expressway,the performance of high-precision section instrument has been evaluated by variance analysis theory. It has indicated that the test speed has a certain influence on the test result,the test direction; sampling interval distance and the temperature of the pavement surface in a certain range have no significant influence on the test results. On this basis,the statistical analysis theory has been adopted for further analyzation,which has indicated that the test results are optimal when the test speed is 3 km/h and the sampling interval distance is 20 m.