基于时间序列法的高速公路沥青路面横向裂缝间距发展模型研究

摘要

Transverse crack is one of the main damage types of the asphalt pavement,which has a great influence on the pavement performance.The development law of the transverse cracks of the as-phalt pavement is analyzed in this paper,and the development model of the transverse crack spacing is obtained using the time series method.The comparison between the measured values and the calculat-ed values is carried out.The research results show that the development of the transverse cracks in the asphalt pavement is relatively slow at the early stage.After a long period of time,the transverse cracks develop rapidly and the transverse crack spacing decreases rapidly to a certain degree.After that,the trend is reduced and the final spacing is about 30 meters.The model for the development of the transverse cracks based on time series method is reliable and can be used to describe the law of de-velopment of transverse crack spacing.%横向裂缝作为高速公路沥青路面的主要破损类型之一，对路面使用性能影响较大。文中分析了高速公路沥青路面横向裂缝的发展规律，采用时间序列法得到横向裂缝间距的发展模型，并进行了实测值和计算值的对比分析。结果表明，通车前期高速公路沥青路面横向裂缝的发展较平缓；通车一段时间后，横向裂缝迅速发展，横向裂缝间距快速减少；裂缝间距减少至一定程度后，又以平缓的趋势减少，最终稳定在30 m左右。基于时间序列法建立的横向裂缝发展模型是可靠的，可用于描述横向裂缝间距的发展规律。