岩土工程学报2016，Vol.38Issue(8)：1399-1406,8.DOI:10.11779/CJGE201608006
堆石料动力残余应变模型研究
Residual deformation model for rock-fill materials
摘要
Abstract
Large scale triaxial shear tests on rock-fill materialsare performed to study the residual deformation behaviors of rock-fill materials byusingthe large-scale triaxial apparatus. The characteristics of residual deformation of cushion material, excavated material and main rock-fill with two different densities are the focuses of this study. Based on enough test results, it isrevealed that the generated shear strain after the application of the first cycle of loading is the main part of the residual shear strain,and its development relates to the accumulation rate of the residual shear strain as the loading cycle increases. In the set test vibration times, the convergence trend does not appear. In contrast, the rock-fill materials have asymptotic volumetric behaviors under cyclic loading. On the basis of test data,a residual deformation model with eight parameters is proposed, which can well reflect the development of the residual strain. And the parameters can be calibrated by dynamic triaxial tests.关键词
堆石料/循环荷载/残余剪应变/残余体应变Key words
rock-fill material/cyclic loading/residual shear strain/residual volumetric strain分类
建筑与水利引用本文复制引用
王庭博,傅中志,陈生水,韩华强..堆石料动力残余应变模型研究[J].岩土工程学报,2016,38(8):1399-1406,8.基金项目
国家自然科学基金项目（51539006，51379130）；水利公益性行业科研专项经费项目（201501035）；中央级公益性科研院所基本科研业务费专项资金项目 （）
