摘要
水电站厂房体积大,结构形式复杂,温度应力问题较为突出,进行温控仿真计算有利于防止裂缝的产生;考虑水电站厂房分层分块跳仓浇筑的实际施工过程,提出了采用大型通用有限元软件Ansys创建有限元模型,应用作者开发的三维有限元温控计算程序调用Ansys文件进行计算,采用Surfer绘图软件进行图形处理的方法。对某水电站厂房3种不同方案的温度场和温度应力进行了仿真计算分析,为该水电站厂房的施工和温度控制提供了参考。方案3采用综合温控措施后,可以大大减小厂房的温度应力。
The concrete body of hydropower house is great and its structure is complex.The problem of thermal stress is obvious.Study on the temperature control simulation is useful to prevent cracks.In this article,considering the material properties of concrete and sequence construction methods of layers and blocks of hydropower house,combined the model created function of general-purpose finite element software Ansys with the three-dimensional finite element temperature control program developed by author.Surfer software is used to create maps.The temperature and stress fields of certain hydropower station powerhouse are simulated and analyzed.The computation results can provide important reference on the construction and temperature control for this hydropower station powerhouse.The comprehensive temperature control measures are used in the scheme 3 and the thermal stress of hydropower house decreases greatly.
出处
《水资源与水工程学报》
2011年第2期5-9,共5页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金资助项目(50779051)"大坝安全监控的不确定性理论与分析方法研究"
关键词
水电站厂房
温度场
温度应力
三维有限元
跳仓浇筑
hydropower house
temperature field
thermal stress
three-dimensional finite element
sequence construction method
