中外公路2025，Vol.45Issue(2)：55-64,10.DOI:10.14048/j.issn.1671-2579.2025.02.006
高模量沥青混合料与应变计协调变形研究
Coordinated Deformation of High-Modulus Asphalt Mixtures with Strain Gauges
摘要
Abstract
In order to improve the deformation coordination between the built-in strain sensors and asphalt mixtures,high-modulus fine aggregate asphalt mixture AC-5 and conventional asphalt surface mixture AC-13 were used as the base materials,and specimens were molded with built-in resistive strain sensors.Uniaxial compression,uniaxial tension,and four-point bending step-by-step loading tests were carried out in conjunction with digital image correlation(DIC).A finite element model verified by hypothesis testing was established to analyze the influence of high-modulus transition materials on deformation coordination under different working conditions such as burial depth of strain gauge,load size,and load type.The results show that under various types of loads,compared with that of the AC-13 asphalt mixture,the measured strain data of the sensors in the AC-5 high-modulus asphalt mixture is closer to the measured data of DIC,and the measurement error is smaller and more stable.The specimens will have different measurement deviations when subjected to compression and tension,and the high-modulus asphalt mixture has some improvement in the deviation.In terms of the three influencing factors including burial depth of strain gage,load size,load size,and load type,the AC-5 high-modulus asphalt mixture has different degrees of improvement on the coordinated deformation performance of the strain gage compared with the AC-13 asphalt mixture.关键词
道路工程/应变计/高模量沥青混合料/协调变形/有限元分析Key words
road engineering/strain gauge/high-modulus asphalt mixture/coordinated deformation/finite element analysis分类
交通工程引用本文复制引用
刘朝晖,郭志豪,黄优,李文博..高模量沥青混合料与应变计协调变形研究[J].中外公路,2025,45(2):55-64,10.基金项目
国家自然科学基金资助项目(编号:52278437) （编号:52278437）
湖南省自然科学基金资助项目(编号:2022JJ40479) （编号:2022JJ40479）
湖南省交通运输厅科技创新计划项目(编号:202236) （编号:202236）
长沙理工大学道路灾变防治及交通安全教育部工程研究中心开放基金资助项目(编号:kfj210401) （编号:kfj210401）
