摘要
在不同的环境温度下,沥青路面车辆轴载换算指数是不同的,而非现行沥青路面设计规范中采用的定值4.35。在总结国内外研究成果的基础上,从沥青混合料的粘弹性力学性质入手,利用沥青劲度模量确定沥青混合料劲度模量,选用材料动模量,利用Bisar软件计算出半刚性基层沥青路面在不同温度下的荷载反应,分析拟合出半刚性基层沥青路面关于温度的轴载换算公式。考虑温度对轴载换算的影响,使轴载换算更加准确。
Vehicle equivalent single-axle load factor is different with environmental temperature changed for asphalt pavement, rather than used in the existing asphalt pavement design specifications as the determined value of 4.35. In summing up research fruits at home and abroad, this paper started with the mechanical properties of viscoelastic of asphalt mixture, made use of asphalt stiffness modulus to determine asphalt mixture stiffness modulus, used dynamic modulus materials, used software Bisar to calculate load response in semi-rigid asphalt pavement at different temperatures, analyzed and deduced the equivalent single-axle load factor in different temperatures. Using this formula for axle load conversion can be more accurate and it has value to practical guidance.
出处
《公路工程》
2009年第2期76-79,共4页
Highway Engineering
关键词
沥青路面
沥青混合料劲度模量
动模量
温度
轴载换算
asphalt pavement
asphalt mixture stiffness modulus
dynamic modulus
temperature
equivalent axle load conversion
作者简介
徐发琼（1984-），女，四川绵竹人，硕士研究生，主要从事路面结构分析与设计。
