非均布接触压力对沥青路面损坏的影响分析

Influence of the Non-uniform contact pressure on the asphalt pavement distress

本文针对轮胎与路面间接触压力具有很明显的非均布性,根据轮胎胎面花纹的类型,提出荷载简化模型,并利用有限元计算分析不同荷载作用下的沥青路面结构应力。结果表明,轮胎与路面接触面的局部区域内,不同荷载模式的影响相当大,这对进一步解释路面面层的破坏现象提供有益的参考。

The interfacial pressure between tire and pavement exhibits a highly non-- uniform distribution over the contact area. On the basis of abundant literature, simplified load models were put forward according to the tire tread patterns. The pavement re- sponse under the simplified load models was obtained through finite--element method. The results show that the influence of differ- ent load models is remarkable near the contact area. These results may be a possible explanation of near--surface pavement distress evolution in asphalt pavement.