泡沫沥青冷再生路面结构剪应力响应分析

Shearing Stress in Cold Recycling Mixture of Foamed Asphalt Pavement

采用ANSYS有限元对泡沫沥青再生路面结构剪应力响应进行了分析,分析结果表明:基层模量是影响泡沫沥青再生基层路面面层和基层内最大剪应力的重要因素之一.面层剪应力随着基层模量增加而降低,相反,基层剪应力则提高,基层内最大剪应力在基层模量达到2 500MPa时几乎等同于面层内的最大剪应力.通过研究,论证了研究泡沫沥青冷再生混合料抗剪性能的必要性.

The shearing stress in pavement recycled with foamed asphalt was analyzed by ANSYS finite element software, which concludes that the modulus of base course is one of the key factors which influence the maximum shearing stress in surface course and base course of the pavement recycled with foamed asphalt. The greater the modulus of base course is, the lower the shearing stress in surface course is, and the higher the shearing stress in base course is. When the modulus of base course reaches 2 500 Mpa, the maximum shearing stress in base course is almost equivalent to that in surface course. Thus it＇ s necessary to consider the shearing strength of cold recycling mixtures of foamed asphalt.