沥青混合料蠕变柔量转换为松弛模量的研究  

Research on the relaxation modulus converted to creep compliance of asphalt mixture

作　　者：黄文柯 张丽娟[1] 张肖宁[1] 邵申申 

机构地区：[1]华南理工大学土木与交通学院,广东广州510640

出　　处：《交通科学与工程》2015年第3期7-12,共6页Journal of Transport Science and Engineering

基　　金：国家自然科学基金项目(51038004)

摘　　要：利用不同荷载水平下AC-13C沥青混合料单轴压缩蠕变试验的拟合结果,根据推导的蠕变柔量与松弛模量之间的转换关系,运用配置法和最小二乘法,得到了松弛模量Prony级数表达式的有关参数。计算结果表明:基于实现容易和操作方便的蠕变试验,避免了误差较大的松弛试验。通过粘弹性参数之间的相互转换关系,得到了沥青混合料松弛模量曲线,并比较了2种方法计算的松弛模量曲线相似度。为沥青混合料粘弹特性的进一步分析提供了有效方法。The result of AC-13C asphalt mixture uniaxial creep test was used to calculate the relevant parameters of the creep compliance Prony series expression based on the deduced relationship ＇between relaxation modulus and creep compliance using collocation method and the least square method.These results suggest that creep compliance is obtained based on the easy implement and the easy operation of uniaxial creep test which can avoid large-error relaxation test and the asphalt mixture relaxation modulus curves can be obtained through the conversion relationship between viscoelastic parameters.The relaxation modulus curves have very high degree of similarity based on the two methods.This provides an effective method for further analysis of asphalt mixture viscoelastic properties.

关 键 词：Prony级数 松弛模量 蠕变柔量 转换 

分 类 号：U414.1[交通运输工程—道路与铁道工程]