Mechanical Response Analysis of Low-Temperature Modified Asphalt Pavement Based on Finite Element Simulation Models

An asphalt pavement model was established using ABAQUS finite element simulation software. Based on the dynamic modulus of low-temperature modified asphalt mixtures, mechanical response analyses were performed on pavement models with different surface course materials. The influence patterns of low-temperature modified asphalt mixture surface courses on the tensile strain at the bottom of the asphalt layer, surface vertical displacement, and tensile stress at the bottom of the base course were investigated. The optimal combination was determined to be an upper surface course of AC-13 USP-SBS asphalt mixture and a lower surface course of AC-20 SBS asphalt mixture.