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应用ABAQUS有限元分析软件整体建模研究了不同厚度铺装层的力学响应变化规律。结果表明:水平荷载对层底剪应力水平影响较大,较厚的铺装层能在一定程度上降低层底剪应力水平。车辆超载、铺装层模量的变化、温度荷载对各不同厚度铺装层力学响应的影响效果接近。较薄的铺装层应提高粘结层的抗剪性能,较厚的铺装层应提高铺装层材料的抗拉强度。桥梁内部最大主应力与最大Mises应力均随着铺装层厚度的增加而呈线性增长,薄层铺装能够在一定程度上改善桥梁受力状况。在实际决策过程中,需要综合考虑力学响应指标与材料实际性能,以达到经济性与功能性双重目的。
The ABAQUS finite element analysis software was used to model the mechanical response of pavement with different thickness. The results show that the horizontal load has a great influence on the shear stress at the bottom of the bed, and the thicker pavement can reduce the shear stress at the bottom of the bed to a certain extent. Vehicle overloading, changes in the modulus of pavement, temperature load on the impact of different thickness of the pavement mechanical response close. The thinner pavement should improve the shear resistance of the adhesive layer. The thicker pavement should improve the tensile strength of pavement materials. The maximum principal stress and the maximum Mises stress in the bridge all increase linearly with the increase of the thickness of the pavement. The pavement of the pavement can improve the stress condition of the bridge to a certain extent. In the actual decision-making process, we need to consider the mechanical response indicators and the actual performance of materials in order to achieve the dual purpose of economy and function.