沥青混凝土路面抗车辙性能有限元分析

通过分析车辙病害发生的主要原因,确定形状改变比能为其评价指标。建立有限元模型,以面层结构内形状改变比能为研究对象,分析了高温条件下沥青面层内的抗车辙区域,并分别研究沥青面层厚度、模量、以及基层模量对沥青面层抗车辙变形能力的影响规律。结果表明:面层内主要抗车辙区域为中面层,路面结构中面层的整体模量,各层模量比,面层厚度,基层模量对面层抗车辙性能均有一定的影响。

Finite Element Analysis on Asphalt Concrete Road Pavement Anti-wheel Rutting Performance

The paper defined the shape change energy as its corresponding appraisal target by studying the main reason of wheel rutting.Then the finite element model was established,taking the shape change energy on the surface layer structure as the research object,and the anti-wheel rut region of bituminous pavement under the hot conditions was analyzed.The bituminous pavement thickness,the module, as well as the basic module to the bituminous pavement anti-wheel rut distortion ability influence rule were studied.The results indicate that,in the surface layer the main anti-wheel rut region is the center surface layer and in the pavement structure the surface layer overall module,each module ratio,surface layer thickness,the basic unit module have the certain influence to the surface layer anti-wheel rut performance.