摘要
本文利用解耦K-G模型能适应不同应力路径的特点,提出一种堆石料现场侧限压缩试验(=132cm)解耦K-G模型参数的分析方法。该方法能求得解耦K-G模型的4个主要参数,突破了侧限压缩试验只能用于求取压缩模量Ea一个参数的局限。从而解决了用室内三轴试验(=30cm)参数存在的“缩尺效应”等影响,并对三板溪面板堆石坝进行了三维有限元分析。
In the light of special property of uncoupled K-G analysis method for uncoupled K-G model parameters in site model which is suitable to different stress paths, an confined compression test （Ф=132cm） of rock-fill materials is suggested in this paper. This method can provide four main parameters of uncoupled K-G model in FEM. It breaks througth this test limit that can only give one parameter of confined compression modulus E0. Thus the “scale effect” influence existed in indoor tri-axial test （Ф = 30cm） can be overcome by this method. These results computed by 3D-FEM for Sanbanxi CFRD are presented in this paper.
出处
《水力发电学报》
EI
CSCD
北大核心
2006年第6期26-33,共8页
Journal of Hydroelectric Engineering
关键词
水工结构
材料参数
现场侧限压缩试验
堆石料
缩尺效应
解耦K-G模型
侧压力系数
hydraulic structure
material parameter
site confined compression test
rock-fill materials
scaleeffect
uncoupled K-G model
lateral pressure coefficient
