摘要
在建立混凝土拱坝位移监控模型时,温度位移分量的确定一直是建模的重点和难点。本文提出以气温和水温确定大坝温度边界采用有限元数值分析方法分别确定混凝土拱坝位移的水压分量和温度分量,并在此基础上建立了混凝土拱坝位移的一维多测点确定性模型,所建立起来的位移确定性模型有较好的精度和外延性,可以实现对水压、温度及时效等位移分量的分离。最后,以清江隔河岩重力拱坝为例,建立了一维多测点确定性位移监控模型,并与实际观测数据进行了对比,结果表明效果较好。
The determination of temperature component is a key but difficult point in establishing the model of monitoring displacements of concrete arch dam. In this paper, the FEM is applied to determine the water pressure component and temperature component of displacement in concrete arch dam by using the atmospheric temperature and reservoir water temperature as the temperature boundary condition. On this basis, a one-dimensional multiple points deterministic displacement monitoring model for concrete arch dam is established. The model is successfully used to the establishment of the monitoring system for Geheyan Gravity Arch Dam.
出处
《水利学报》
EI
CSCD
北大核心
2011年第8期981-985,994,共6页
Journal of Hydraulic Engineering
基金
水利部公益性行业科研专项经费项目(200901058)
长江科学院中央级公益性科研院所基本科研业务费项目(YWF0723/AQ03)
关键词
混凝土拱坝
位移
多测点
确定性模型
温度分量
concrete arch dam
displacement
multiple monitoring points
deterministic model
temperature variable
