摘要
采用全过程仿真粘弹性空间有限单元法,对9种温控因素进行了敏感分析,得出温控因素变化对浇筑块强约束区中心最高温度、最大基础温差和最大拉应力的影响.在敏感分析的基础上,采用回归分析和拉格郎日插值方法在温控因素多维空间建立了凝聚方程,利用凝聚方程可计算任意施工条件下的最大基础温差和最大拉应力.
By using emulation visco-elasticity three-dimension finite element method,the sensitivity analysis of nine temperature control factors have been made in this paper and obtained that the top-temperature,the highest foundation temperature difference and the largest tension stress in the strongly constrained region of the concrete block were influenced by the change of temperature control factors.Based on the sensitivity analysis,using regression analysis and Lagrange interpolation method,the condensation equation in the multiple dimension space of temperature control factors is derived.By using the condensation equation,the highest foundation temperature difference and the largest tension stress in any construction condition can be calculated.
出处
《水利水电技术》
CSCD
北大核心
2001年第11期14-19,共6页
Water Resources and Hydropower Engineering
基金
国家"九五"科技攻关项目
关键词
混凝土坝
温度控制
敏感分析
凝聚方程
全过程仿真
粘弹性
空间
有限单元法
浇筑
温控因素
多维空间
concrete dam
temperature control
sensitivity analysis
condensation equation
whole course emulation
visco-elasticity
three dimension finite element method
