三峡大学学报（自然科学版）2018，Vol.40Issue(4)：1-5,5.DOI:10.13393/j.cnki.issn.1672-948X.2018.04.001
基于有限元法的高拱坝分区变形模量反演分析
Parameter Inversion of Regional Deformation Modulus for High Arch Dam Using FEM
摘要
Abstract
Concerning the complexity of displacement model and the time-costing problem of conventional FEM simulation for high arch dam,a novel and efficient approach is proposed for the parameter inversion of the zoning deformation moduli.Firstly the FE model including dam body and rock basement are divided into several zones according to the material distribution and geometric features;several linearly independent groups of deformation moduli are pre-selected within the possible range.Based on the monitored reservoir water level variation during the whole life or a certain time period,an associate displacement series can be obtained for each group via the finite element analysis;in replacement of the conventional water pressure component,here these displacement series are used to construct the regression model for the monitored displacement;and the regression coefficients are then calculated using optimization approach.According to their mechanical relationships with the displacement,the zoning elastic moduli can thus be calculated.The Yujianhe Arch Dam is taken as a demonstration and verification for the proposed method;and the simulated results show that the obtained water component has a good relationship with the water level;the regression coefficients are reasonable;and the calculated zoning deformation moduli are close to the designed values.关键词
高拱坝/位移统计模型/变形模量/参数反演/有限元法Key words
high arch dam/displacement statistical model/deformation modulus/parameter inversion/finite element method(FEM)分类
建筑与水利引用本文复制引用
李宗樾,程井,张枝阳,庞井龙..基于有限元法的高拱坝分区变形模量反演分析[J].三峡大学学报（自然科学版）,2018,40(4):1-5,5.基金项目
贵州省水利厅科技专项经费(KT201501) （KT201501）
国家自然科学基金(51009056) （51009056）
中央高校基本科研业务费项目(2015B15114) （2015B15114）
