基于Weibull分布的水稳碎石基层损伤本构模型研究OA北大核心CSTPCD

In order to investigate the mechanical properties of cement stabilized aggregates semi-rigid base layer,the damage constitutive model of cement stabilized aggregates semi-rigid base layer under uniaxial compression load was constructed by theoretical analysis and experimental method,and the damage constitutive model was verified with the support of 7 d unconfined compression test,and the expansion process of cumulative damage of cement stabilized aggregates of different ages and cement stabilized aggregates doped with red mud and rubber powder was analyzed.The results show that the damage factor η of the damage constitutive model increases with the addition of red mud rubber powder and the increase of age,and the values of the distribution parameters m and F0 decrease,which can effectively inhibit the damage extension,and the theoretical curves of the constitutive model and the test curves fit well,which can provide theoretical references for the subsequent calculations of the related calculations of the cement stabilized aggregate.