岩土力学Issue(1)：35-40,6.
紫坪铺面板坝堆石料颗粒破碎试验研究
Experimental study of particle breakage of Zipingpu rockfill material
摘要
Abstract
A series of large-scale consolidated drained triaxial tests were conducted to research particle breakage of Zipingpu rockfill material under monotonic and cyclic loading for different initial void ratios. The results show that there exists a hyperbolic relation between the input plastic work and particle breakage, regardless of the initial void ratio or confining pressure under both monotonic and cyclic loading. The dilatancy factor at peak decreases with the increasing of particle breakage and there exists a nearly linear relation between particle breakage at peak and the dilatancy factor at peak on semilog coordinate, irrespective of initial void ratio. Test results in this study also indicate that there exists an approximate linear relation between peak principal stress ratio and the dilatancy factor at peak, regardless of the initial void ratio. This study results can provide useful references for state-dependent elastic-plastic constitutive model considering particle breakage and finite element analysis of Zipingpu concrete face dam during Wenchuan earthquake;and help to further understand the particle breakage of rockfill materials.关键词
堆石料/颗粒破碎/三轴试验Key words
rockfill material/particle breakage/triaxial test分类
建筑与水利引用本文复制引用
孔宪京,刘京茂,邹德高,付猛..紫坪铺面板坝堆石料颗粒破碎试验研究[J].岩土力学,2014,(1):35-40,6.基金项目
地震行业科研专项经费项目(No.201208013)；国家自然科学基金(No.51279025，No.51379028)；新世纪优秀人才支持计划资助(No. NCET-12-0083)。 （No.201208013）
