按预测轴载谱分析沥青路面的疲劳损伤  

Study on Asphalt Pavement Fatigue-Damage with Forecasting Axial Load Spectrum

作　　者：马林 葛折圣[2] 胡晓倩[2] 黄明波[2] 

机构地区：[1]广东省公路建设有限公司,广州510600 [2]华南理工大学,广州510641

出　　处：《科学技术与工程》2011年第19期4506-4508,共3页Science Technology and Engineering

摘　　要：现行《公路沥青路面设计规范》(JTG D50—2006)轴载等效换算方法难以反映超载、重载交通对路面结构的影响。结构层参数取值未考虑结构层在疲劳过程中的材料损伤,是重载交通沥青路面出现早期破坏的原因之一。采用预测轴载谱和Miner法则,计算分析了路面结构的疲劳损伤累积过程,并考虑不同使用阶段路面基层模量衰减对路面结构损伤进程的影响。结果表明,半刚性基层厚沥青面层路面结构的疲劳损伤累积进程明显优于目前国内较典型的半刚性基层沥青路面结构。研究结果为重载交通沥青路面结构设计指明了方向。In Specifications for Design of Highway Asphalt Pavement（JTG D50—2006）,the method of Equivalent Axle Loads could not reflect the influence on pavement structure by overload and heavy-load transportation.And the parameter of structural layers was no considering the material damage in the process of fatigue.It is one of the reasons why asphalt pavement is damaged early.The fatigue-damage accumulation in pavement structure was analyzed by using the forecasting axle load spectrum and Miner law.And the parameter of structural layers attenuated while the material damage in the process of fatigue.The results show that the fatigue damage accumulation process of semi-rigid base total thickness asphalt pavement structure is significantly better than the current domestic typical semi-rigid bituminous pavement structure.So this research results can help the development of structure design of heave-load asphalt pavement.

关 键 词：路面工程 沥青路面 疲劳损伤 轴载谱 

分 类 号：U416.01[交通运输工程—道路与铁道工程]