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文章基于线弹性断裂力学的有限元法,对沥青路面开裂以后的温度应力及裂缝在温度作用下的扩展规律、裂缝尖端的应力强度因子及其与路面温度分布和路面材料特性等参数之间的关系进行了数值分析。结果表明,合理设计沥青面层的厚度和优选温缩性小的路面材料是提高沥青路面抗裂性能的重要方法。
Based on the finite element method of linear elastic fracture mechanics, the temperature stress after cracking of asphalt pavement and the law of its propagation under temperature, the stress intensity factor at the tip of the crack and its relationship with parameters such as pavement temperature distribution and pavement characteristics Relationships were numerically analyzed. The results show that the rational design of the thickness of asphalt pavement and the preference of pavement materials with small temperature shrinkage are important methods to improve the crack resistance of asphalt pavement.