沥青混合料三轴剪切试验的离散元模拟研究  

Discrete Element Simulation on Tri-axial Shear Test of Asphalt Mixtures

作　　者：杨军[1] 张旭[1] 朱浩然[1] 

机构地区：[1]东南大学交通学院,江苏南京210096

出　　处：《建筑材料学报》2012年第1期64-68,共5页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51078089)

摘　　要：为了更好地评价和预估沥青混合料抗车辙能力,基于离散元方法,应用PFC2D软件对沥青混合料的三轴剪切试验进行离散元数值模拟,并将模拟结果与实验室试验结果进行了对比分析.结果表明,离散元模拟结果与实验室试验结果具有较好的相关性,且规律一致,验证了模型的正确性;可基于此模型建立评价和预估沥青混合料抗车辙能力的虚拟试验方法.In order to evaluate and estimate rutting resistance of asphalt mixtures more conveniently, the softwear PFC2D was applied to simulate the tri-axial shear test of asphalt mixture based on the discrete el- ement method（DEM）, and the simulation results are compared with laboratory test results. Results show that the discrete element simulation and laboratory test have good correlation, which verifies the applica- bility of the model, while the virtual test method based on this model can be established to evaluate and predict the rutting resistance of asphalt mixtures.

关 键 词：沥青混合料 车辙 三轴剪切试验 离散元方法 

分 类 号：U414[交通运输工程—道路与铁道工程]