大坝防渗层新浇筑砼的水化热温度应力分析  

Temperature Stress Analysis of Hydrate Heat of Underwater-Indiscrete Concrete in Proof-leakage Layer of Dam

作　　者：黄蔚[1] 刘迎曦[2] 周承芳[2] 

机构地区：[1]温州大学建工学院,浙江温州325027 [2]大连理工大学力学系,辽宁大连116023

出　　处：《湖南大学学报（自然科学版）》2001年第5期91-95,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目 ( 597790 0 3)

摘　　要：在对大坝坝段进行温度场及温度应力的有限元分析基础上 ,采用向后差分法推导了求解瞬态温度场有限元基本方程 ,编制了计算程序进行计算 .着重对防渗层浇筑过程中因混凝土水化热产生的温度应力进行了研究 ,其中考虑了自生体积膨胀、应力徐变的影响 ,得出了对工程指导有益的结论 .Based on the result of finite element analysis of temperature field in the dam and back difference method,the basic finite element equations of temperature field are established and the computing program is compiled.It emphasizes the study of temperature stress induced by hydration heat during underwater indiscrete concrete pouring into the proof seepage layer of the dam.It also includes the influence of self volume expanding and stress varied with time.A helpful conclusion for engineering is obtained.

关 键 词：混凝土 水化热 温度应力 有限元分析 大坝 防渗层浇筑 温度场 自生体积膨胀 

分 类 号：TV331[水利工程—水工结构工程]