混凝土重力坝变形混合模型研究与应用  

Hybrid Model Research and Application of Concrete Gravity Dam Deformation

作　　者：曾贝佳[1] 郑园媛[1] 潘望[1] 李艳玲[1,2] 

机构地区：[1]四川大学水利水电学院,成都610065 [2]四川大学水力学与山区河流开发保护国家重点实验室,成都610065

出　　处：《南水北调与水利科技》2014年第B02期62-65,共4页South-to-North Water Transfers and Water Science & Technology

摘　　要：依托官地大坝的典型坝段，采用三维有限元模拟了水压力作用下的大坝变形特性，探讨了不同水荷载作用下的坝体变形规律，构建了基于水压分量确定性模型、温度分量及时效分量统计模型的大坝变形混合模型。研究表明，混合模型较传统的统计回归模型能更好地反映大坝的物理力学工作性态，便于分离各因子对变形的影响程度，具有拟合精度高、外延功能强、建模的时域限制较小等特点，在大坝安全监测资料分析中具有广阔的应用前景。Based on the typical section of Guandi Dam, this paper used three dimensional finite element method to simulate the dam deformation characteristics under the water pressure, discussed the deformation regularity of the dam under the different water load, constructed the hybrid model of gravity dam based on the deterministic model of the water pressure component, the statistical models of the temperature component and the limitation component. The research shows that the hybrid model can reflect the physical and mechanical state of the dam better than traditional statistical model, separate the influence of various factors on the deformation easily, has the characteristics of high fitting precision and strong extension function and small time domain limit of modeling, has broad application prospects in dam safety monitoring data analysis.

关 键 词：有限元 变形特性 水压分量 温度分量 时效分量 确定性模型 混合模型 

分 类 号：TV698.1[水利工程—水利水电工程]