基层模量对重载交通沥青路面受力特性的影响分析

Analysis on Influence of Base Modulus on Mechanical Property of Heavy Traffic Asphalt Pavement

基层模量是沥青路面设计的重要参数,它的取值将直接影响到沥青路面的受力计算结果与使用寿命。在应用BISAR3.0程序系统计算不同轴载情况下基层模量变化对沥青路面受力与变形特性的基础上,统计得到了基层模量对重载交通沥青路面使用寿命的影响模型。结果表明,基层模量对重载交通沥青路面的使用寿命具有显著的影响,在设计中需要根据工程实际,选用合理的基层模量参数。

Base modulus is an important parameter in design of asphlat pavement.It will directly influence the mechanical calculation result and service life of asphalt pavement.On the basis to calculate the variation of base modulus on the mechanical and deformation properties of asphlat pavement under the different axle loads by the applicaiton of BISAR3.0 program,the statistical model of the influence of base modulus on the service life of heavy traffic asphalt pavement is presented.The result shows that the servise life of heavy traffic asphaltpavement is influnced sign ificantly by base modulus.It is required to select the reasobale base modulus parameters in the design accoridng to the enginering practices.