双曲拱坝不同封拱温度下的等效应力法分析  

Equivalent stress analysis of hyperbolic arch dams at different grouting temperatures

作　　者：师孟悦 辛宝龙 张帅 SHI Mengyue;XIN Baolong;ZHANG Shuai(Shaanxi Dongzhuang Water Conservancy Project Construction Co.,Ltd.,Xi’an 710011,China;Sinohydro Corporation Engineering Bureau 15 Co.,Ltd.,Xi’an 710086,China)

机构地区：[1]陕西省东庄水利枢纽工程建设有限责任公司,陕西西安710011 [2]中国水电建设集团十五工程局有限公司,陕西西安710086

出　　处：《水利建设与管理》2024年第5期37-44,共8页Water Conservancy Construction and Management

基　　金：陕西水利科技项目(2018slkj-1)。

摘　　要：拱坝内部应力对安全性影响较大,坝体内部过大的温度应力易引起较大的安全隐患。本文以陕西省东庄水利枢纽工程混凝土双曲拱坝为研究对象,考虑不同工况下的坝体温度应力变化,使用有限元等效应力法分析封拱温度对坝体最大主应力和位移的影响,通过拱冠梁截面应力对比有限元法和有限元等效应力法的差别,进而得到最佳的双曲拱坝封拱温度场,确定合理的封拱方案,可为碾压混凝土高拱坝封拱温度场的设计提供参考。The internal stresses within arch dams have a significant impact on safety,and excessive temperature-induced stresses within the dam can pose substantial safety risks.This paper focuses on the concrete hyperbolic arch dam of the Dongzhuang Water Conservancy Project in Shaanxi Province.It considers variations in dam temperature-induced stresses under different conditions and employs the finite element equivalent stress method to analyze the influence of grouting temperatures on the maximum principal stress and displacement of the dam.The study also examines the differences between the finite element method and the finite element equivalent stress method through stress at the arch crown section.This research aims to determine the optimal temperature distribution for grouting in hyperbolic arch dams,establish a reasonable grouting scheme,and provide valuable insights for the design of temperature fields during arch closure for rollercompacted concrete high arch dams.

关 键 词：双曲拱坝 封拱温度 有限元分析 等效应力法 

分 类 号：TV315[水利工程—水工结构工程]