摘要
目前关于路面结构层模量对路面结构力学响应影响的研究一般是利用弹性层状理论进行分析。从三维数值分析的角度 ,分别从路表弯沉、面层和基层内的压应力及拉应力等方面说明了结构层模量及基层条件对路面结构力学响应的影响。分析认为路面各结构层模量的提高能减小路面表面弯沉 ,较高的基层模量会增大面层内的压应力 ,较高的底基层模量能减小基层底面的拉应力。
At present, influence of layer modulus on structural responses of asphalt pavements is analyzed using general Burmister theory. However, pavement responses under axle loading is three dimensional (3D) in nature. Using 3-D numerical simulation, this paper reports the impact of pavement structural module on pavement surface deflection, compressive stress and tensile stress at the bottom of surface and base respectively. The results indicate that the higher layer modulus are, the lower surface deflectiones, the higher base's module can result in great vertical compressive stress at asphalt layer, and the higher subgrade's module can result in lower tensile stress at the bottom of base. The analysis results have great value to design and construction of asphalt pavements.4 tabs,9 figs,12 refs.
出处
《交通运输工程学报》
EI
CSCD
2003年第1期35-39,共5页
Journal of Traffic and Transportation Engineering
基金
教育部优秀青年教师资助计划项目 ( 190 0
EYTP of MOE
China
