水利学报2011，Vol.42Issue(9)：1095-1101,1109,8.
多轴应力条件下碾压混凝土层面抗剪强度试验研究
Mechanical properties of roller compacted concrete under multiaxial stress state
摘要
Abstract
Considering the true mechanical states of the concrete in roller compacted gravity and arch dam,a group of direct and multiaxial shear experiments of the roller compacted concrete（RCC） specimens were carried out with two graded-aggregates obtained from a high arch dam.The dimensions of the specimens are 150mm×150mm×150mm and these specimens are of three kinds,including the body specimens,layer-treated specimens and layer-untreated specimens.The shear strength and deformation characteristics of these three kinds of specimen under different stress states were analyzed systematically.Test results indicate that the shear strength and ultimate deformation of RCC increase under biaxial compression-shear and triaxial compression-compression-shear if the stress is not high.While under tension-shear and tension-compression-shear the shear strength and ultimate deformation of RCC decrease sharply.There are also some differences in the strength and deformation characteristics of these three types of specimens under complex stress states.By regression of the tests results,respective failure criterions for RCC under different combined loads are proposed.关键词
碾压混凝土/多轴应力/抗剪强度/变形/破坏准则Key words
roller compacted concrete/multiaxial stress state/shear strength/deformation/failure criterion分类
建筑与水利引用本文复制引用
王怀亮,宋玉普..多轴应力条件下碾压混凝土层面抗剪强度试验研究[J].水利学报,2011,42(9):1095-1101,1109,8.基金项目
国家自然科学基金资助项目 （）
中国博士后基金资助项目（20080441117 （）
200902541） （）
