Curved concrete bridges with small radii and large longitudinal slopes are important parts of viaduct ramp, on which the asphalt pavement plays an important role in resisting and dispersing traffic loads. Due to the complexity of curved concrete bridge structures with small radii and large longitudinal slopes, the asphalt pavement is subjected to complex mechanical action under loading. This study investigated the mechanical response of the asphalt pavement on a concrete deck under complex load conditions through a three-dimensional finite element model.

The effects of different curvature radii, inside and outside wheel groups, driving speeds and temperature fields on the mechanical response of asphalt pavement were analyzed. The results show that in the process of driving on curved bridge deck, the inside and outside wheels of a vehicle produce different normal forces and longitudinal shear forces due to the influence of centrifugal force and radial force moment. With the decrease of the curvature radius and the increase of the driving speed, nonuniform loads are produced on the bridge deck pavement, which would eventually contribute to nonuniform damages. Under different temperature fields, the bridge deck pavement can undergo different failure modes. Besides, temperature fields have the greatest impact on the damage of bridge deck pavement, followed by driving speeds and curvature radii.

半径小，纵向坡度大的弯曲混凝土桥梁是高架桥坡道的重要组成部分，沥青路面在抵抗和分散交通负荷方面起着重要作用。由于具有小半径和大纵向坡度的弯曲混凝土桥梁结构的复杂性，沥青路面在荷载作用下会经受复杂的机械作用。本研究通过三维有限元模型研究了复杂荷载条件下混凝土面板沥青路面的力学响应。

分析了曲率半径，内外轮组，驱动速度和温度场对沥青路面力学响应的影响。结果表明，在弯桥桥面上行驶过程中，由于离心力和径向力矩的作用，车辆的内，外轮产生不同的法向力和纵向剪切力。随着曲率半径的减小和行驶速度的增加，桥面路面上会产生不均匀的载荷，最终将导致不均匀的破坏。在不同的温度场下，桥面铺装会经历不同的破坏模式。此外，温度场对桥面铺装的破坏影响最大，其次是行驶速度和曲率半径。