摘要
根据非洲刚果(布)国家一号公路实地实验数据,采用MEPDG软件进行建模,在实际荷载水平及路面材料性质下,分析超薄沥青路面早期病害的原因,变化各层材料弹性模量和厚度,对车辙深度和疲劳裂缝等指标对结构强度和早期损害的影响,取95%保证率下符合可靠性要求的结果.进一步分析路面结构对高交通增长率的抵抗能力强弱,提出针对降低超薄沥青路面早期损害的措施.
The ultra-thin asphalt pavement ow ns distinctive early stage disease such as early significant cracks and rutting since it has a thin surface layer compared to traditional pavement structure .The re-search establishes models to simulate National Highway 1 in Congo （Brazzaville） by MEPDG soft-ware .Considering load level and pavement material properties ,the research analyzes the reason of early disease in ultra-thin asphalt pavement .By adjusting the key factors of modulus and thickness of each layer ,the simulation arrives at the 95% reliability requirements of pavement structural strength such as top-down cracks and down-top cracks and rutting .The research also proves the performance of various pavement structure to resist high traffic growth rate ,and draw s conclusions about reasona-ble indicator trends of ultra-thin asphalt pavement .
出处
《武汉理工大学学报（交通科学与工程版）》
2014年第1期176-180,共5页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
道路工程
超薄沥青
路面结构
早期损害
裂缝
车辙
road engineering
ultra-thin asphalt
pavement structure
early stage disease
cracking
rutting
