半刚性基层与柔性基层对超载的力学响应对比分析

根据弹性层状体系理论,以BISAR 3.0软件为计算工具,分别计算出半刚性基层和柔性基层沥青路面在0.7MPa、0.84MPa、1.0MPa的轴载作用下的力学响应,分析出不同荷载作用下的半刚性基层和柔性基层的路表弯沉、面层和基层的受力状况,对半刚性基层和柔性基层的疲劳性能进行总结。通过分析认为：在特定的超载水平下,半刚性基层更能适应交通荷载的超载情况。

Comparative Analysis on Mechanical Response of Semi-Rigid and Flexible Base to Overload

According to elastic layered system theory,this paper respectively calculates the action of mechanical load response of semi-rigid and flexible asphalt pavement under 0.7MPa,0.84MPa,1.0MPa axis load by using BISAR 3.0 software for computing tools,the semi-rigid and flexible base of the road surface deflection,the surface layer and the grass-roots force status under different loads are analyzed.Finally,the fatigue performance of the semi-rigid and flexible base are summarized.This paper argues through the results that semi-rigid base adapts to the traffic overloading more better in specific overload level.