水力发电学报2025，Vol.44Issue(10)：39-47,9.DOI:10.11660/slfdxb.20251004
三轴压缩条件下水工沥青混凝土力学性能研究
Experimental study on mechanical properties of hydraulic asphalt concrete under triaxial compression
摘要
Abstract
The mechanical properties of hydraulic asphalt concrete(HAC)are crucial to the safety and stability of asphalt core dams.Currently,the failure mechanisms of HAC under different confining pressures haves not yet been fully understood,and the relationship between confining pressure and its deformation behavior lacks comprehensive research.And,there exists certain controversy about the determination of its anti-seepage failure point.This paper examines the effect of confining pressure on the failure mode,deformation,and compressive strength of HAC through experimental tests.The results indicate the failure mode of specimens is affected significantly by confining pressure.With an increase in confining pressure,both the peak axial strain and peak lateral strain of HAC increase,during which the former increased by 4.12 times at most,while the peak volume strain tends to be stable;The increase in compressive strength with confining pressure can be described by a power function.We suggest that the peak strength point be taken as the anti-seepage failure point of HAC,and we formulate a corresponding failure criterion.This work clarifies the relationship of the axial strain at the water-inlet point versus the axial strain at the peak-stress point,and laid a theoretical basis for determining the seepage prevention failure point.关键词
水工沥青混凝土/围压/破坏模式/抗压强度/三轴压缩试验Key words
hydraulic asphalt concrete(HAC)/confining pressure/failure mode/compressive strength/triaxial compression test分类
建筑与水利引用本文复制引用
王琴,刘云贺,陈亮亮,王瑜豪,张天宇..三轴压缩条件下水工沥青混凝土力学性能研究[J].水力发电学报,2025,44(10):39-47,9.基金项目
国家自然科学基金重点项目(52039008) （52039008）
陕西省教育厅自然科学专项基金(24JK0571) （24JK0571）
