混凝土坝温控三维仿真敏感分析及其凝聚方程  

SENSITIVITY ANALYSIS OF TEMPERATURE CONTROL OF CONCRETE DAM AND ITS CONDENSATION EQUATION

作　　者：侯朝胜[1] 赵代深[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2001年第5期605-610,共6页Journal of Tianjin University：Science and Technology

基　　金：国家重点科技攻关资助项目 (96- 2 2 1 - 0 5- 0 5- 0 1 )

摘　　要：采用全过程仿真粘弹性空间有限单元法 ,对混凝土坝典型浇筑块进行了温控敏感分析 ,得出温控因素 (浇筑温度、间歇天数、开浇日期、浇筑层厚度 )对浇筑块强约束区最大拉应力的影响 .在此基础上采用回归分析和拉格朗日插值方法得出多维数值空间最大拉应力凝聚方程 ,可用于推算不同施工方案的浇筑块强约束区的最大拉应力 .Based on the sensitivity analysis of temperature control for typical pour blocks of a concrete dam,and the all process simulation of visco elastic 3 DFEM,the relationship between the maximum tensile stress of concrete blocks in a constraint region and the factors of temperature control (temperature of construction,time interval,start date and height of every layer)was obtained.Depending on the above mentioned relationship,the condensation equation of the maximum tensile stress in a multi dimensional numerical space was got by methods of regression analysis and Lagrange interpolation.The maximum tensile stress of concrete blocks in a constraint region can be calculated by the condensation equation in every construction scheme.

关 键 词：全过程仿真 三维有限元 混凝土坝 温度控制 敏感分析 凝聚方程 最大拉应力 

分 类 号：TV642[水利工程—水利水电工程]