摘要
基于水东大坝补强加固前后的水平位移监测资料，通过时空分析和在有限元模型基础上建 立的确定性模型，分析了各个影响因子对坝体变形性态的影响，并对其水平位移陡增情况进行了物 理成因解析。结果表明，坝体变形主要是由于补强加固中灌浆水泥产生的水泥水化热引起坝体上 游部分混凝土温度升高，建议加强对坝顶水平位移的监测，以便更好地观察补强加固的效果。
According to the horizontal displacement data in the period of the rehabilitation of the Shuidong dam, the influence of various factors on the deformation behavior of the Shuidong dam is analyzed by space-time analysis and a deterministic model based on the finite element method. The cause of abrupt increase of the horizontal displacement is analyzed. The results show that the deformation is caused by the increased temperature of the upstream concrete due to the hydration heat of cement during the rehabilitation. It is suggested that horizontal displacement monitoring for the top of the dam be intensified to ensure the observation for the rehabilitation.
出处
《水电自动化与大坝监测》
2005年第6期52-55,共4页
HYDROPOWER AUTOMATION AND DAM MONITORING
基金
国家自然科学基金重点资助项目(50139030) 教育部博士学科点专项科研基金(20020294005) 。
关键词
大坝
补强加固
变形性态
确定性模型
dam
rehabilitation
deformation behavior
deterministic model
