纤维沥青混合料劈裂试验数值模拟研究

Numerical Simulation of Splitting Test on Fiber Asphalt Mixture

以含纤维沥青混合料劈裂抗拉性能为研究对象,采用数值模拟的方法分析了纤维沥青混凝土试件劈裂过程中的应力情况和裂纹发生与扩展过程,讨论了纤维对沥青混合料劈裂抗拉性能的影响。数值模拟结果表明纤维在劈裂实验过程中对裂纹扩展的阻滞作用,并在细观上描述纤维对沥青混凝土抗拉性能的增强机理。

In this paper,splitting tensile properties of fiber asphalt mixture were studied to analysis the stress situation and the crack growth process of splitting test by using numerical simulation method.The splitting tensile strength of fiber asphalt mixture was discussed.The result of numerical simulation was that fiber could retard crack propagation in the splitting test and described the mechanism that asphalt concrete tensile performance were reinforced within fiber.