大体积混凝土湿热耦合研究  

Research on Coupled Heat and Moisture Transfer of Mass Concrete

作　　者：高鹏[1] 李鹏辉[2] 鲍克蒙[3] 

机构地区：[1]新疆额尔齐斯河流域开发工程建设管理局,新疆830000 [2]清华大学水沙科学与水利水电工程国家重点实验室,北京100084 [3]清华大学水利水电工程系,北京100084

出　　处：《三峡大学学报（自然科学版）》2012年第4期29-33,共5页Journal of China Three Gorges University：Natural Sciences

摘　　要：从传热传湿的机理出发,结合水工混凝土特点,建立了以温度和含水量为基本变量,含内热源和内湿源的大坝混凝土湿热耦合传导模型,实现了基于交替变量的伽辽金(Galerkin)法的混凝土湿热传导耦合模型的有限元求解.该方法可用于大坝混凝土湿热耦合传导过程的仿真计算与分析,为混凝土坝采用保温保湿的方式来防止混凝土裂缝提供科学依据.In this study, a theory of coupled heat and moisture transfer which use temperature and water con-tent as the basic variables is introduced to moisture concrete structures. Meanwhile, both heat source and moisture sources are taken into account in the theory to meet with the mass concrete. A new way named alter-native variable Galerkin method is presented to solve coupled heat and moisture problem. This model could be applied to the simulation analysis of concrete dam so that adaptable engineering measure could be taken to pre-vent concrete cracksing.

关 键 词：湿热耦合 混凝土坝 仿真分析 

分 类 号：TV43[水利工程—水工结构工程]