摘要
提出确定性模型温度分量的合理表达式 ,即基于数理统计和温度场理论 ,首先建立求解坝体运行初期温度场的计算模型 ,再由温度场计算温度应力分量 ,进而建立改进的应力确定性模型 .分析表明 ,改进后的应力确定性模型比常规模型拟合精度高 。
The fitting precision of the deterministic model is theoretically the best.But it may produce opposite result,if treated improperly.Based on mathematical statistics and the method for setting up temperature field,a computation model of the temperature field in initial stages is established first,the component of temperature stress is calculated,and all improved deterministic model is established.Analysis shows that the precision of the improved deterministic model is better than that of the conventional model and is easy to forecast.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
2000年第5期54-58,共5页
Journal of Hohai University(Natural Sciences)
关键词
确定性模型
温度场
温度应力分量
拟合精度
deterministic model
temperature field
temperature component of stress
precision
statistical analysis
