摘要
针对当前未考虑道路结构层参数、车辆动荷载、行车速度对沥青路面路基工作区深度的影响现状,文中借助有限元软件,分析了38种道路结构层参数、5种车辆动荷载和2种行车速度对沥青路面路基工作区深度的影响。结果表明铺面结构层模量对路基工作区深度的影响较小,而铺面结构层厚度对路基工作区深度的影响较大,特别是基层厚度对路基工作区深度的影响尤为显著;土基模量对路基工作区深度影响显著,但随着土基模量的增加,路基工作区深度增加;车辆动荷载对路基工作区深度的影响呈线性正相关,且车辆动载每增加50kN,路基工作区深度增加约1m;行车速度对路基工作区深度的影响呈正相关,且行车速度每增加10m/s,路基工作区深度增加约0.4~1.4m。
Because the influence of structure layer parameters,vehicle dynamic load and speed on asphalt pavement sub-grade workspace depth is not considered,this paper analyzes the influence factors of asphalt pavement sub-grade work area depth with the finite element software,including 38 kinds of road structure layer parameters,5 kinds of vehicle dynamic load and 2 kinds of driving speed.The results are as follows:modulus of pavement has less effect on the sub-grade work area depth,but thickness of pavement has more effect on the sub-grade work area depth,particularly thickness of the grass-roots level.Modulus of soil base has great effect on the sub-grade work area depth,and the sub-grade work area depth increases with the increase of modulus of soil base.The vehicle dynamic load has a linear positive correlation with the sub-grade work area depth,and when the vehicle dynamic load increases 50KN,the sub-grade work area depth increases about 1 m.The vehicle speed has a linear positive correlation with the sub-grade work area depth,and when the vehicle speed increases 10m/s,the sub-grade work area depth increases about 0.4-1.4 m.
作者
刘小兰
陈郝
李自林
LIU Xiao-lan;CHEN Hao;LI Zi-lin(Civil Engineering College, Tianjin Chengjian University,300384, Tianjin, China;BCEG NO.6 Construction Engineering CO., LTD., 100143, Beijing, China;Hebei Key Laboratory of Geotechnical Engineering Safety and Deformation Control (Hebei University of Water Resources and Electric Engineering), 061001, Cangzhou, Hebei, China)
出处
《河北水利电力学院学报》
2021年第3期7-12,共6页
Journal of Hebei University Of Water Resources And Electric Engineering
基金
国家自然科学基金项目(51178456)。
关键词
沥青路面
结构层参数
车辆动荷载
行车速度
路基工作区深度
asphalt pavement
structural layer parameters
vehicle dynamic load
speed
subgrade workspace depth
