水利水电科技进展2012，Vol.32Issue(6)：27-30,59,5.DOI:10.3880/j.issn.1006-7647.2012.06.007
基于子模型法的面板堆石坝三维应力变形分析
3D stress-deformation analysis of CFRDs based on sub-model method
摘要
Abstract
Based on the 3D nonlinear finite element method, a sub-model is established for the refined simulation of characteristics of concrete face slab by considering the stage construction of a high CFRD. The interface element with certain thickness is employed to simulate the contact surface between dam body and face slab, and the relevant linkage element is set to simulate the interaction between joints of face slab. The stress-deformation behaviors of the CFRD during the construction and impoundment periods are analyzed. They are compared with the calculated results or the observed data of the CFRDs with the similar height. It is found that during the construction and impoundment periods, the maximum settlement is about 1 % of the dam body, and it occurs in the secondary rockiill area. The stress in the face slab is almost compressive one, and the tensile stress mainly concentrates on the connecting part between the face slab and the surrounding mountain. For the peripheral joints, the maximum shear deformation of slippage, the maximum tensile deformation and the maximum shear deformation of settlement are all not larger than 30 mm. The proposed sub-model method may greatly improve the precision for calculating the stress and deformation of the face slab and preferably satisfy the design requirements of projects.关键词
面板堆石坝/应力变形/子模型法/邓肯E-B模型Key words
CFRD/stress deformation/sub-model method/Duncan E-B model分类
建筑与水利引用本文复制引用
朱敏,邓华锋,许晓亮..基于子模型法的面板堆石坝三维应力变形分析[J].水利水电科技进展,2012,32(6):27-30,59,5.基金项目
湖北省教育厅自然科学研究项目(Q20091301) （Q20091301）
宜昌市科学技术研究与开发项目(A2011-302-6) （A2011-302-6）
三峡大学研究生科研创新基金(2011cx021) （2011cx021）
