北方季冻区货车专用公路沥青路面设计指标  

Research on Design Index of the Special Truck Asphalt Pavement in North Seasonal Frozen Area

作　　者：张敏江[1] 焦守增 刘洪涛[1] 

机构地区：[1]沈阳建筑大学交通工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2016年第2期279-287,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51178278);辽宁省交通厅科技攻关项目(201404)

摘　　要：目的研究我国北方季冻区货车专用公路沥青路面设计指标,弥补现行沥青路面设计规范中设计指标单一的问题.方法对比分析国内外重载交通沥青路面设计指标,以弹性层状体系理论为基础,利用BISAR软件对试验路结构方案进行定量计算并分析其结果的合理性.结果完善了现行沥青路面设计规范中仅以路表弯沉、结构层层底拉应力作为路面结构组合设计的设计指标,提出了适合北方季冻区货车专用公路沥青路面设计的多指标设计体系:路表弯沉、无机结合料层疲劳、沥青混合料低温缩裂和永久变形四个设计指标.结论理论分析和试验路路面使用性能检测证明,所提的设计指标符合我国北方季冻区货车专用公路沥青路面设计实际.This paper is proposed to study design index of the special truck asphalt pavement in the north seasonal frozen area,to make up for the problem of simple design index in the present specification. The authors contrast and analyze the design index of heavy traffic asphalt pavement at home and abroad,based on the elastic layered system theory,using BISAR software test road structure scheme for quantitative calculation and analysis of the rationality of the results. The final is put forward to surfacing deflection,the fatigue life of inorganic binder layer,lowtemperature shrinkage crack and permanent deformation of four design indicators. Theoretical analysis and experimental road pavement performance test showthat the proposed design indexes conform to design requirements of the special truck asphalt pavement in the north seasonal frozen area.

关 键 词：重载交通 路表弯沉 永久变形 低温缩裂 

分 类 号：TU391[建筑科学—结构工程] U391[交通运输工程]