基于应变计监测数据和有限元的高拱坝应力性态对比分析  

Comparative Analysis of Stress Behavior in High Arch Dams Based on Strain Gauge Monitoring Data and Finite Element

作　　者：陈锴 陈波[3] CHEN Kai;CHEN Bo(Large Dam Safety Supervision Center,National Energy Administration,Hangzhou 311122,China;Huadong Engineering Corporation Limited,Hangzhou 311122,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]国家能源局大坝安全监察中心,浙江杭州311122 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [3]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2025年第4期168-171,119,共5页Water Resources and Power

摘　　要：拱坝蓄水前后的坝体应力性态是影响结构安全的重要指标,通过在某拱坝坝体布设应变计组获取应力监测数据,对坝体混凝土自生体积变形和大坝应力状态进行计算,同时结合基于有限元程序ANSYS建立的精细化三维有限元模型,采用实测数据计算与三维线弹性有限元进行多尺度对比分析,重点研究了工程蓄水前后的应力变化。结果表明,某拱坝应力状态正常,在设计计算允许范围内,大坝在蓄水前后工作性态良好,应力计算结果与有限元仿真基本吻合,为拱坝全生命周期坝体应力性态评价提供了参考。The stress behavior of arch dam before and after impounding is an important index affecting the structure safety.The spontaneous volume deformation of concrete and the stress state of dam were calculated by installing strain gauge group in the dam body to obtain the stress monitoring data.A refined three-dimensional finite element model was developed using ANSYS.The measured data and three-dimensional linear elastic finite element were used for multi-scale comparative analysis.The stress variation before and after water storage was studied.The results demonstrate that the stress state of the arch dam is normal and within the allowable range of design calculation;The dam works well before and after impoundment;The stress calculation are in good agreement with the finite element simulation.It provides a reference for evaluating the stress behavior of arch dam body during its whole life cycle.

关 键 词：蓄水期应力 安全监测 有限元 应力应变 

分 类 号：TV642.42[水利工程—水利水电工程]