基于统计损伤的沥青混凝土路面本构关系研究

Constitutive Relation Based on Statistical Damage for Asphalt Concrete Pavement

基于统计损伤理论,建立了沥青混凝土在三轴压力作用下的损伤本构模型.分别对不同温度,不同围压下用该模型得出的应力-应变曲线与用双曲线模型得出的应力-应变曲线进行对比,结果表明沥青混凝土材料的强度随温度的升高而降低,随围压的增大而升高,且该模型适用于沥青混凝土材料的弹性阶段.

Based on statistical damage theory,the damage constitutive model of asphalt concrete under triaxial stress is builed.the paper compares the stress-strain curves derived from the model with the stress-strain curves derived from the hyperbolic model respectively at different temperatures and different confining pressures,the results show the strength of asphalt concrete material decreases with increasing temperature and rises with increasing confining pressure,and the model is suitable for the elastic stage of asphalt concrete materials.