人民黄河2024，Vol.46Issue(3)：156-160,5.DOI:10.3969/j.issn.1000-1379.2024.03.028
东庄拱坝基础加固措施效果分析
Analysis of the Effect of Strengthening Measures for Dongzhuang Arch Dam Foundation
摘要
Abstract
The strengthening of arch dam foundation is an important engineering measure to ensure the stability of dam abutment and the safe-ty of arch dams.This paper took the reinforcement measures for the foundation of Dongzhuang arch dam as the research object,systematically simulated the discontinuity layer,mud fissures,wide joints and corresponding reinforcement measures of the dam abutment rock mass.The fi-nite element analysis was conducted on the reinforcement effect of the dam foundation using elastic-plastic constitutive law.The calculation results indicate that the foundation reinforcement measures have little effect on the maximum displacement and stress of the dam body,but to some extent,they reduce the yield zone of the dam body and the foundation surface,improving the stress on the dam body.Through overload calculation and analysis,it is found that the foundation reinforcement measures have little effect on the plastic zone of the arch dam body,but the yield zone of the foundation surface is significantly reduced after the foundation reinforcement.The foundation reinforcement measures have a relatively smaller impact on the yield zone volume of fault f5 and muddy fissure Rnj3,but a significant impact on the yield zone vol-ume of large fissure L22.In summary,the foundation reinforcement measures taken for Dongzhuang arch dam have improved the stress on the dam body and foundation,and improved the stability of the dam foundation.关键词
混凝土拱坝/基础加固/弹塑性本构/东庄拱坝Key words
arch dam/foundation reinforcement/elastic-plastic constitutive law/Dongzhuang arch dam分类
建筑与水利引用本文复制引用
杨军义,邢建营,聂章博,王惠芹..东庄拱坝基础加固措施效果分析[J].人民黄河,2024,46(3):156-160,5.基金项目
中国博士后科学基金面上项目(2022M721299) （2022M721299）
