Acknowledging the significance of particle breakage in rockfill due to its large size and angularity,this study incorporates the particle breakage energy dissipation coefficient into the stress-dilatancy relationship of the Cambridge model.Triaxial test results on sand gravel and landslide dam materials validate this modification within the theoretical framework of the generalized plastic model.Key findings include:(1)The energy consumption coefficient of particle breakage exhibits a unimodal curve,initially increasing and then decreasing with shear strain during testing.(2)The modified stress-dilatancy relationship captures the non-linear characteristics of shear-dilation curves for both rockfill types.(3)The stress-strain curves of diverse materials align well with the stress-dilatancy relationship,incorporating particle breakage and the generalized plastic model,showcasing traits of strain hardening,shear compaction,and shear dilatancy.
关键词
剪胀方程/颗粒破碎/堆石料/广义塑性模型
Key words
stress-dilatancy equation/particle breakage/rockfill materials/generalized plasticity model
维普
万方数据