岩土力学2017，Vol.38Issue(2)：507-516,10.DOI:10.16285/j.rsm.2017.02.026
高拱坝基础不对称性及其加固效果研究
Research on asymmetry of high arch dam foundation and its improvement effect
摘要
Abstract
The geological and topographical asymmetries of high arch dam foundations are essential problems which threaten the arch dam safety.Based on Baihetan arch dam engineering,a geomechanical model test is conducted to particularly evaluate the characteristics of the high arch dam with an asymmetrical foundation,from the respects of states of stress and deformation of the dam and its failure modes.Three-dimensional numerical simulations are built on both original and improved design schemes,based on which elastic-plastic finite element analysis is conducted.A comparison is then made between two sets of results in terms of dam deformation,stress distribution in dam abutment,local and global stabilities of the structure.The actual effect and reinforcement mechanism of the design optimization and reinforcement measures,adjusted to those existed asymmetries of dam foundations,are evaluated by combining with experimental results.It is shown that the optimization of dam shape and foundation reinforcement act synergistically to improve the dam deformation,state of stress and transmission of force in dam abutment area,and global stability of the dam-foundation system.The research of Baihetan arch dam asymmetry problem is significant to deepen the comprehension of optimization design and engineering reinforcement especially for high arch dams.关键词
不对称性/高拱坝/地质力学模型试验/有限元法/加固Key words
asymmetry/high arch dam/geomechanical model test/finite element method/reinforcement分类
建筑与水利引用本文复制引用
宋子亨,刘耀儒,杨强,徐建荣,何明杰,张伟狄..高拱坝基础不对称性及其加固效果研究[J].岩土力学,2017,38(2):507-516,10.基金项目
国家自然科学基金面上项目(No.51479097,No.51279086) （No.51479097,No.51279086）
水沙科学与水利水电工程国家重点试验室科研项目资助(No.2016-KY-2).This work was supported by the General Program of National Natural Science Foundation of China(51479097,51279086) and the Research Project of State Key Laboratory of Hydroscience and Hydraulic Engineering (2016-KY-2). （No.2016-KY-2）
