关键词: 桥梁工程, 桥面铺装, 箱梁, 层间接触, 黏弹性, 有限元分析

Abstract: In order to analyze the stress of viscoelastic pavement under the condition of interlayer contact, the finite element analysis model was established by taking the simply supported box girder bridge as an example. And the mechanical response of pavement under different asphalt layer thickness, different bond layer thickness and different contact cohesive force was analyzed under horizontal impact load. The results show that under the condition of interlayer contact, the maximum value of lateral stress of pavement layer appears at the edge of load area, and the minimum value appears at the center of load area. Increasing the thickness of asphalt layer will increase the longitudinal tensile stress of asphalt layer, but it can improve the appearance of unstable ruts. Increasing the thickness of the bond layer will reduce the longitudinal and transverse tensile stress of the pavement layer, but it has little effect on other stresses and deformation of the pavement layer. The change of contact cohesion between asphalt layer and bonder layer has little influence on the stress. When the cohesion is greater than 0.01MPa, the stress of each layer remains unchanged.

Key words: bridge engineering, deck pavement, box girder, interlayer contact, viscoelastic, finite element analysis