沥青路面路表温度与横向力系数的相关关系研究

Research on the Correlativity between Pavement Surface Temperature and Lateral Force Coefficient of Asphalt Pavement

路面横向力系数测试系统采集的原始数据按照规范要求,需根据路表温度进行修正,但实际应用过程中,同一路段在不同路表温度下采集的原始数据经温度修正后存在较大偏差。文章基于SMA沥青玛蹄脂混合料路面结构设计,开展相关试验,研究路面横向力系数与路表温度的关系,确定了新的横向力系数温度修正系数,认为路表温度与路面横向力系数具有较强的相关性。根据试验结果,提出修正后的横向力系数温度修正公式,可在对比分析历年数据、制定养护决策时参考使用。

The data processing of the lateral force coefficient of pavement requires correcting the original data based on the pavement surface temperature.However,in practical application,there is a significant deviation in the corrected original data collected for the same section under different pavement surface temperatures.The relevant experiments are carried out based on the structural design of SMA asphalt mixture pavement,so as to determine the new lateral force coefficient and temperature correction coefficient.It is believed that there is a strong correlation between the pavement surface temperature and lateral force coefficient of pavement.Based on the experimental results,the temperature correction formula for the lateral force coefficient after correction is put forward,which can be used as the reference for comparing and analyzing the historical data and making the maintenance decision.