根据水泥混凝土路面脱空形态及受力特性,建立水泥板存在脱空状态下的沥青加铺结构有限元模型,分析了脱空范围变化、单板脱空与双板脱空、传荷能力变化时沥青加铺层的受力变化情况。结果表明:脱空对加铺层受力影响非常明显,脱空范围的增加、脱空形式由单板变为双板以及传荷能力的衰弱都会对加铺层造成不利的影响。 According to the void form and force characteristics of cement concrete pavement, a finite element model of asphalt overlay with void state of cement slab was established. The change of void range, the void of veneer and the emptying of double slab were analyzed. When the asphalt overlay force changes. The results show that the void has an obvious influence on the stress of the overlay. The increase of the void area, the change of the void form from the single board to the double board and the weakening of the charge transfer capacity will all adversely affect the overlay.