沥青混合料单轴压缩试验的细观分析  

Microscopic Analysis for Uniaxial Compression Test of Asphalt Mixtures

作　　者：李明[1] 彭伟[1] 王彦伟[1] 

机构地区：[1]山东科技大学山东省土木工程防灾减灾重点实验室,山东青岛266590

出　　处：《山东交通学院学报》2016年第1期64-69,共6页Journal of Shandong Jiaotong University

基　　金：山东省自然科学基金项目(ZR2011EEQ027)

摘　　要：运用基于离散元法的二维颗粒流程序PFC2D模拟沥青混合料单轴压缩试验,选择连续密级配AC-13作为研究对象,得到模拟试验与实际室内试验试件的应力-应变曲线,二者的结果较吻合。输出模型图、颗粒间接触力图、颗粒位移图,从细观角度分析沥青混合料的性质,分析结果更加准确、合理,克服了单纯从宏观角度分析沥青混合料性质的片面性。In this paper, the uniaxial compression test of asphalt mixture is simulated by the two-dimensional granular flow program PFC2D based on the discrete element method. The continuous dense gradation AC-13 is selected as the research object. The stress-strain curves are obtained through the simulation test and the practical test. The two test results are almost identical. contact force diagram, microscopic angle. Th displacement diagram of particles, Through the output modeling diagram, intergranular the properties of asphalt mixture are analyzed from the e analytical results are more accurate and reasonable and the one-sidedness of analyzing asphalt mixture properties only from the macroscopic angle is tackled.

关 键 词：离散元法 沥青混合料 单轴压缩试验 细观分析 

分 类 号：U414[交通运输工程—道路与铁道工程]