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本文像据粘弹性材料强度理论,提出了一种确定沥青面层低温缩裂率的能量判据,并提出了实现这一能量判据的沥青面层一维温度应力场的有限元计算方法。经试验路资料验证,这一判据和计算方法具有较好的实用性。应用这一判据不仅可以分析面层材料对于开裂率的影响,也可以用来分析结构因素的影响。
Based on the theory of viscoelastic material strength, this paper presents an energy criterion for determining the low temperature shrinkage of asphalt pavement and proposes a finite element method for calculating the one-dimensional temperature stress field of asphalt pavement to realize this energy criterion. The test road data validation, the criteria and calculation methods have good practicality. The application of this criterion can not only analyze the influence of surfacing materials on the cracking rate, but also analyze the influence of structural factors.