沥青路面的逆向设计及其试验研究

Reverse Design and Corresponding Experimental Investigation of Asphalt Pavement

鉴于传统路面设计及评价方法的局限性,基于逆向工程技术思想,提出沥青路面的逆向设计方法,并给出了相应的设计流程.在充分掌握原路面特征的基础上,具体介绍了材料准备、芯样扫描分析、路面重塑的整个过程,并利用独立开发的新型路面材料加速加载试验系统进行磨耗试验,测定重塑路面抗滑性能的变化.然后,引入相似理论,通过比较发现重塑路面各项指标与原路面相似度较高,从而证明了该设计方法的可行性、合理性和可靠性.路面养护处治后,抗滑性能的熵值增大,说明表面处治将使系统内部子系统功能更加趋于一致,整体结构更加稳定.

In order to overcome the limitations of traditional pavement design and evaluation methods,a reverse design method of asphalt pavement is put forward based on the concept of reverse engineering technology,and the cor-responding design process is presented.In the investigation,first,the characteristics of the initial pavement are analyzed,and the whole process,including the material preparation,the core scan and analysis as well as the pavement remolding in laboratory,is described in detail.Then,the designed pavement is tested on a new-pattern pavement material ALF（accelerated loading facility） tester to measure the surface skid resistance at different cycles.Moreover,the similarity principle is introduced to compare the remolded pavement and the original one,with high similarity being obtained,which proves the feasibility,reasonability and reliability of the design method.It is also found that the entropy of skid resistance of the pavement increases after the surface treatment,which means that the pavement maintenance tends to unify the subsystems and stabilize the function of the whole structure.