摘要
为研究集料水平向分布状态对沥青混合料劈裂试验的影响,基于沥青混合料集料均匀性指标,通过在混合料水平截面不同方向上加载,采用有限元法数值模拟集料水平向分布状态对沥青混合料劈裂试验中最大应力值(平面主应力和水平拉应力)的影响,并加以试验验证。研究结果表明:集料水平向分布状态对沥青混合料劈裂试验中平均最大应力值影响不大,其间相关性不明显,但与最大应力值变异性间相关性却很显著。
The projective of this research is to investigate the effect of horizontal aggregate distribution in asphalt mixtures on splitting test. Based on the aggregate homogeneity index and through loading in different directions of the horizontal cross-section of asphalt mixtures, the effect of horizontal aggregate distribution on the maximum stresses （in-plane principal stress and tensile stress） of the splitting test was numerically simulated using Finite Element Method （FEM） and verified by real test. Results show that the effect of horizontal aggregate distribution on the maximum stresses of the splitting test is insignificant and there is no obvious correlation between them. However, the correlation between the horizontal aggregate distribution and the variation of the maximum stresses is significant.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2013年第4期891-896,共6页
Journal of Jilin University:Engineering and Technology Edition
基金
浙江省自然科学基金项目(Y1080276)
同济大学道路与交通工程教育部重点实验室开放基金项目(201101)
关键词
道路工程
沥青混合料
集料水平向分布状态
劈裂试验
数值模拟
集料均匀性指标
有限元法
road engineering
asphalt mixture
horizontal aggregate distribution
splitting test
numerical simulation
aggregate homogeneity index
finite element method（FEM）
