泡沫沥青再生基层路面结构力学分析

Mechanical Analysis of Pavement Structure with Foamed Asphalt Recycled Base

采用计算软件对泡沫沥青再生基层路面进行结构力学分析。分析结果表明:沥青面层整体受压明显,易出现车辙,需要沥青面层高温稳定性良好。泡沫沥青再生基层顶面受压应力大,需要有良好的压实度、强度和抗疲劳性能。与其它结构层相比,路基的回弹模量对路面弯沉的影响最大,是主要控制指标。

Mechanical analysis of pavement structure with foamed asphalt recycled base was investigated. Results in- dicated that the asphalt surface layer needs good stability at high temperature due to the rutting risk induced by com- pression stress. The foamed asphalt recycled base is subjected to high vertical stress, This requires the base should have good compaction degree, strength and fatigue resistance. Compared with other structural layers, resilient modulus of the sub-grade had the largest effect on the pavement deflection,which could be used as a primary control index.