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为进行开级配沥青碎石细观力学分析,研究了开级配沥青碎石随机凸多边形集料模型生成方法。为使模型更加逼真,生成过程更加高效,考虑孔隙的模拟,用面积控制集料颗粒的投放,利用蒙特卡罗方法生成二维随机圆形集料模型,引入一系列预判条件改进延凸公式和基块体的生成方法,改进侵入和相交判断方法,并给出2块体相交判断方法,通过延凸,生成二维随机凸多边形集料模型,并通过过程控制使模型的生成符合实际沥青碎石试件的制备过程。模型生成实例表明,本模型生成方法效率较高,较符合真实沥青碎石试件;基于本模型的数值单轴试验结果较符合实际,证明本模型是有效的。
In order to carry out mesomechanical analysis of open graded asphalt pavement, a method of generating random convex polygons aggregate model with open graded asphalt pavement was studied. In order to make the model more realistic, the generation process is more efficient. Considering the simulation of the pores, the area is used to control the delivery of aggregate particles. A two-dimensional random circular aggregate model is generated by Monte Carlo method. A series of preconditions are introduced to improve the convex- And base block generation method to improve the intrusion and intersection judgment method, and gives two pieces of intersection judgment method, through the convex, generated two-dimensional random convex polygon aggregate model, and through the process control so that the model is generated in line with the actual asphalt Preparation of gravel specimens. The example of model generation shows that the model generation method is more efficient and more in line with the real asphalt pavement specimen. The numerical uniaxial test results based on this model are more realistic, which proves that this model is effective.