This paper uses the finite element method,analyzes the influence on the performance of the bridge structure mechanics of asphalt concrete pavement pavement.The results show that the maximum transverse tensile strain and tensile stress were higher than the maximum longitudinal strain and tensile stress is much larger,and the surface in asphalt concrete;the maximum longitudinal tensile stress than the maximum transverse tensile the stress was small;the lower tensile stress than pavement pavement layer tensile stress small,transverse to the maximum tensile stress than the longitudinal tensile stress is significantly larger;in the traffic loads and loads of the pavement shear stress has little effect.The maximum transverse shear stress between layers is much larger than the maximum shear stress in the layer and the maximum shear stress between the layers.The supporting effect of the diaphragm becomes more and more obvious as the load keeps close to the diaphragm,which provides a reference for the development of the standardization of the design of the bridge deck pavement.%采用有限元法,分析了沥青混凝土铺装层对桥面结构力学性能影响,结果表明,铺装层最大横向拉应变和拉应力均比最大纵向应变及拉应力大很多,且在沥青混凝土上表面出现;纵向最大拉应力要比横向最大拉应力明显小;铺装下层拉应力要比铺装上层拉应力小,横桥向最大拉应力比纵桥向最大拉应力要明显大;在行车荷载作用下,荷位对铺装各层剪应力影响较小.层间最大横向剪应力要比层内的最大剪应力、层间纵向最大剪应力大很多,横隔板支撑作用随着荷位不断向横隔板靠近越来越明显,这为桥面铺装设计规范化的发展积累提供了参考.
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