基于ABAQUS对沥青混合料力学特性的数值模拟  

NUMERICAL SIMULATION OF MECHANICAL PROPERTIES OF ASPHALT MIXTURE BASED ON ABAQUS

作　　者：李若木 张博然 Li Ruo-mu;Zhang Bo-ran

机构地区：[1]阜新市产业转型振兴服务中心,辽宁阜新123000 [2]辽宁卓铸工程咨询有限公司,辽宁阜新123000

出　　处：《建筑技术开发》2025年第4期113-116,共4页Building Technology Development

摘　　要：为研究沥青混合料长期变形机制,分析沥青材料在反复荷载作用下的受力变形特性,通过数字图像识别技术(CT),获取不同级配下沥青混合料剖面二值图像,建立数值模拟二维模型。基于ABAQUS平台的数值模拟技术,获得不同级配沥青混合料细观尺度下的应力应变场。结果表明:宏观设计法中所存在的缺陷导致了沥青混合料性能差异;应力场中的不均匀分布主要体现在粗骨料中,应变场的不均匀分布主要体现在砂浆中,位移场的不均匀性呈现横向带状分布,和应力应变场相似,细观参数影响着位移场的分布。研究结果可为工程实际提供可靠的理论支撑。In this paper,based on the mechanical and deformation characteristics of asphalt material under repeated loads,digital image recognition technology(CT)was used to obtain binary images of asphalt mixture profiles at different levels,and a two-dimensional numerical simulation model was established.The stress-strain fields of asphalt mixtures of different grades were obtained at mesoscale based on ABAQUS numerical simulation technology.The results show that the defects in the macroscopic design method lead to the performance difference of asphalt mixture.The uneven distribution of the stress field is mainly reflected in the coarse aggregate,and the uneven distribution of the strain field is mainly reflected in the mortar.The uneven distribution of the displacement field presents a transverse zonal distribution,similar to the stress-strain field,and the meso-parameters affect the distribution of the displacement field.The research results can provide reliable theoretical support for engineering practice.

关 键 词：沥青混合料 CT图像 单轴蠕变试验 ABAQUS数值模拟 

分 类 号：TU997[建筑科学—市政工程]