沥青混凝土路面车辙环道试验的数值模拟及轴载换算  

Numerical Simulation of Circular Track Test for Rut of Asphalt Concrete Pavement and Axle-Load Conversion

作　　者：刘斌锋 

机构地区：[1]陕西省商洛公路管理局,商洛市726000

出　　处：《公路》2009年第8期282-285,共4页Highway

摘　　要：应用有限元软件ABAQUS,分析了模型尺寸、单元类型、网格尺寸等对数值模拟的影响。结果表明模型尺寸越大、单元次数越高、网格越密,数值模拟的精度越高,但计算耗时也越长;采用等参8节点二次单元CPE8R、土基深度1.0 m以下为无限元、网格局部细化的模型,既能够合理地预测和分析路面车辙,又能减少计算耗时。The influence of the model size, the element type and grid size on numerical simulation is analyzed by the finite element software ABAQUS. The results show that the bigger model size, the higher- ranking element type and the finer grid size will increase the simulation precision, but the calculation will spend more time. The model, in which eight-node quadratic element CPE8R and infinite element are adopted and the mesh is fined partially, could predict and analyze the pavement rut reasonably, and spend less time.

关 键 词：车辙 环道试验 数值模拟 无限元 

分 类 号：U416.217[交通运输工程—道路与铁道工程]