军用机场沥青混凝土道面结构设计指标确定

Research on Structure Design Criteria of Asphalt Concrete Pavement for Military Airport

根据机场荷载和交通量特点,基于对沥青道面损坏形式和原因的分析,提出进行设计控制的指标;针对军用机场沥青道面的典型荷载和典型结构对指标进行大量计算分析,指出对沥青道面的性能要求主要是强度而不是变形,结构设计以半刚性基层、底基层的拉应力为主要设计指标,面层拉应力和剪应力作为一定条件下的验算指标。

According to the characteristics of the airport loading and traffic volume, the design control criteria based on the analysis of the cause of asphalt pavement damage is put forward, then, a large amount of calculation and analysis under the typical structure and loading is done. It is pointed out that the quality requirements for the asphalt pavement mainly refers to bearing strength instead of deflection. For the structure design, the cleavage stress of the semi-rigid base and that of the sub-base course are taken as the main design criteria. And it demands verifying the cleavage stress of the surface course under the low temperature. To some heavy horizontal loading areas, it also demands verifying the shear stress of the surface course.