摘要
针对典型半刚性基层沥青路面,采用有限元方法,选取不同轴数与轮组车辆荷载,分析了土基回弹模量对半刚性基层沥青路面极限轴载的影响.结果显示:路面极限轴载由底基层材料抗拉强度控制.路面极限轴载随土基回弹模量的增加而近似线性地增加,对于单轴双轮组的标准轴型,土基回弹模量由20MPa增加到40 MPa与60 MPa时,路面极限轴载分别增加约19%和29%.此外,车辆的轴数与轮组对土基回弹模量与路面极限轴载的关系有一定影响.
Finite element method was used to analyze influences of subgrade resilient modulus on the ultimate axle load of semi-rigid base asphalt pavement under vehicle loads of various axle number and wheel group.Results of the analysis indicate that the ultimate axle load is controlled by the tensile strength of subbase material.The ultimate axle load increases nearly linearly with increasing the ultimate axle load.For standard axle type of single axle and double wheel,the ultimate axle load increases by 19% and 29% when the subgrade resilient modulus increases from 20 MPa to 40 MPa and 60 MPa,respectively.In addition,the axle number and wheel group has some influence on the relationship between the subgrade resilient modulus and the ultimate axle load.
出处
《湘潭大学自然科学学报》
CAS
北大核心
2015年第3期21-26,共6页
Natural Science Journal of Xiangtan University
基金
湖南省交通运输厅2011年度科技进步与创新计划项目(201110)
关键词
沥青路面
半刚性基层
极限轴载
土基回弹模量
轴数与轮组
asphalt pavement
semi-rigid base
ultimate axle load
subgrade resilient modulus
axle number and wheel group
