福建省典型倒装路面结构温度场数值模拟  

Temperature field numerical simulation of inverted pavement structure in Fujian Province

作　　者：王春明[1] 

机构地区：[1]福建交通职业技术学院,福建福州350007

出　　处：《南昌工程学院学报》2011年第4期39-44,共6页Journal of Nanchang Institute of Technology

摘　　要：采用有限差分方法编制温度场模拟程序,模拟福建省典型倒装沥青路面结构温度场的时空分布规律.研究结果表明:倒装路面结构基层温度最高值高于半刚性路面基层,且最高、最低变化幅度与基层温度梯度明显低于半刚性路面结构,因此,在半刚性基层上铺设级配碎石和沥青碎石,能较大程度改善基层顶部的温度变化幅度与基层内部温度梯度,可减小由半刚性基层温缩引起的反射裂缝.With the finite difference method,we worked out the simulation program of temperature field,which simulates the temporal and spatial distribution of the typical inversion pavement in Fujian Province.The results show that the highest temperature of the base of the inverted pavement structure is higher than that of the semi-rigid pavement.The highest and lowest variation amplitude and the temperature gradient are significantly lower than those of the semi-rigid pavement structure.Therefore,laying grading macadam and asphalt gravel above the semi-rigid base can largely improve the temperature variation amplitude of the top and the internal temperature gradient of the base,hence decreases the reflective cracking caused by temperature shrinkage of the semi-rigid base.

关 键 词：倒装路面结构 温度场 有限差分 半刚性基层 

分 类 号：U416.217[交通运输工程—道路与铁道工程]