基于沥青路面使用性能指标的罩面层使用寿命预测研究

为预测沥青路面罩面层的使用寿命，依托河北宣大高速罩面后沥青路面使用性能多年实测数据，应用SPSS拟合所取S型模型中的参数，确定各指标预测方程，并对各指标进行回归分析和误差分析。预测结果表明:路面损坏状况指数PCI、路面车辙深度指数RDI和路面抗滑性能指数SRI均在约第5年时衰减到临界值，说明罩面层达到使用寿命，需要再一次进行罩面处理。

Study on Prediction of the Service Life of Cover Layer Based on Asphalt Pavement Performance Index

In order to predict the service life of cover layer of asphalt pavement, based on the actual measured data for the performance of asphalt pavement of Hebei Xuanda Expressway after overlay project, applying SPSS to fit the parameters of S model, the prediction equation of each index is determined and the regression analysis and error analysis are carried out. Through prediction:The pavement damage index PCI, pavement rutting depth index RDI and pavement anti-slide performance index SRI were reduced to the critical value in about the fifth year. It shows that the cover layer reaches the service life and needs to be treated again.