基于性能的沥青路面全寿命设计方法——重交通沥青路设计方法之二

Performance-based Whole-life Design Method for Asphalt Pavement——Design Method for Heavy-duty Road(Part 2)

鉴于传统的路面结构设计不能很好地控制路面损坏状况 ,故对先前建立的路面结构行为方程进行了验证 ,分析了不同沥青材料对路面长期使用性能的影响 ,建立了旧路面的结构状况对罩面路面结构的影响关系 ,在此基础上对路面结构的全寿命使用性能进行了分析 .根据所建立的全寿命路面结构行为方程 ,提出了一套基于路面使用性能的新的路面设计方法 ,并试图根据路面在整个分析期内的使用性能来设计路面的结构组合 ,给出最优的、唯一的路面结构厚度组合 .为了保证按上述方法设计的路面结构具有期望的寿命 。

The authors here validate the equation of pavement structural behavior which was founded before,analyze the influence of different asphalt materials on the pavement long-term performance,develop the effect relation of old pavement condition in the overlaid pavement structure and then give a analysis of whole life performance of pavement structure.According to the whole life pavement structural behavior equation,the authors put forward a new structural design method based on pavement performance,try to design pavement structural combination based on pavement performance within the whole analysis period and give the optimum and unique design combination of pavement structure.In order to guarantee the expected life of pavement structure which was designed using the above method,this paper gives the principle advice of choosing pavement materials.