摘要
级配碎石材料具有显著的非线性特点,因此级配碎石弹性模量取值需考虑路面结构参数的影响.本文采用正交方法对影响柔性路面级配碎石基层应力状态的路面结构参数进行了分析,认为沥青面层厚度和土基模量是影响级配碎石基层弹性模量的主要因素.通过多元非线性回归分析,建立路面参数与级配碎石弹性模量的关系,提出了级配碎石基层弹性模量计算公式,较目前的经验取值方法更合理.
Resilient modulus of unbound granular materials is influenced strongly by stress level.So pavement structure parameters must be taken into account in modulus determination.In this paper,the pavement structure parameters which influence the stress level and modulus of granular base were analyzed with orthogonal method.The results show that the module of subgrade and the thickness of asphalt face layer have important influence on modulus of granular base.Moreover,a modulus determination method of granular base according to structure parameters was developed by multiple regression,which is more rationally than experiential method.
出处
《重庆交通大学学报（自然科学版）》
CAS
2006年第5期45-48,共4页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
级配碎石
非线性
弹性模量
正交方法
多元回归
granular materials
nonlinear
resilient moduli
orthogonal method
multiple regression
