不同加载方式下的沥青路面剪切响应分析

Shear Response Analysis of Asphalt Pavement under Different Loading Modes

运用有限元软件ANSYS建立半刚性基层沥青混凝土路面的结构模型进行瞬态分析,得到路面结构在匀速移动均布荷载和半波正弦荷载作用下的yz向剪应力及剪应变时程曲线,揭示两种加载方式下的路面结构剪切响应规律基本相似,但波动荷载对路面受力状态和应变状态的影响更为多变、更为复杂。

The structure model of semi-rigid base asphalt concrete pavement was built herein with the finite element software ANSYS to conduct transient analysis, and then to get the yz shear stress and shear strain vs. time curve of the pavement structure under the action of uniform moving load and half-sine load. Therefore, it is disclosed that the shear response laws of the pavement structure under the two loading modes are similar essentially; however, the effect of fluctuating load on the stress and strain condition therein is more diversified and complicated.