摘要
利用三维有限元计算工具,考虑沥青路面结构层不同的模量和厚度组合,结合实测的竖向轮胎-路面接地压力并考虑水平轮载,分析沥青路面结构层的车辙贡献率.分析结果表明:沥青路面结构层各层的车辙贡献率不同,并受模量和厚度组合情况的影响,尤其是模量的影响更为显著;横向力的大小对中面层剪应变车辙贡献率的影响较小,对每一层压应变车辙贡献率的影响也较小,但对上、下面层的剪应变车辙贡献率影响较明显;轻型货车对车辙的贡献十分突出,不容忽视.
A three dimensional finite element program incorporating measured vertical tire-pavement contact pressure（TPCP）was utilized for computing the rutting contribution rate（RCR）in asphalt concrete（AC）layers with the different combination of layer thickness and modulus of AC.Analysis of the results indicate that the RCR is different for each AC layer and changes with the thickness and modulus of each AC layer,and the modulus play a more important role for the RCR.The RCR caused by shear strain of middle AC layer and caused by pressure strain of all AC layers have little change with the magnitude of lateral TPCP,however,the RCR caused by shear strain of top layer and bottom layer dramatically varies with the magnitude of lateral TPCP.The rutting rooted in the light truck can not be neglected because of the high value of shear strain and the pressure strain in surface layer.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第3期102-106,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51278389)
关键词
沥青路面
厚度
模量
实测轮载接地压力
三维有限元
车辙贡献率
asphalt pavements
thickness
modulus
measured tire-pavement contact pressure
three dimensional finite element
rutting contribution rate
