混凝土筏板基础水化热研究  

Study on concrete hydration heat of raft foundation

作　　者：吴献[1] 回国臣[2] 穆春龙[3] 张黎黎[1] 杨昆[1] 郎东莹[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]沈阳有色冶金设计研究院,辽宁沈阳110003 [3]东北大学设计研究院,辽宁沈阳110013

出　　处：《混凝土》2010年第8期16-20,共5页Concrete

基　　金：国家"十一五"科技支撑计划重大项目(2008BAJ08B11-03);辽宁省教育厅科研项目计划(L2010458)

摘　　要：随着我国高层建筑的兴起,基础底板大体积混凝土结构在现代工程建设中广泛应用,其性能及施工技术已成为工程界研究关注的热点之一。从实际工程出发,分析了在混凝土浇筑和固化前期,水化热形成的复杂的温度场,从混凝土28 d龄期内水化热所形成的温度场及相关计算方法论证入手,结合工程实例,运用ANSYS有限元软件计算温度场。对高层建筑筏板基础大体积混凝土的温度场进行了热分析,仿真计算了筏板基础28 d龄期内的温度分布规律,得到了实测及用计算方法预测的温度场,为实现温致开裂趋势评估和采取科学的降温施工工艺提供了依据。With the rise of China＇s high-rise buildings,massive concrete foundation slab of the structure of the building in a wide range of modern engineering applications,its performance and construction engineering technology research has become one of the focus of attention.Starting from the actual project,an analysis of concrete pouring and curing in the early stage of formation of hydration heat of the temperature field in the complex,in this paper.The age of 28 days from the concrete during the hydration heat of the temperature field is formed and the method of calculating starting argument,combined with engineering practice,the use of ANSYS finite element software,high-rise building on the raft foundation of mass concrete temperature field of thermal analysis,the initial simulation based on a raft during the 28 days of age the temperature distribution.The temperature field is gained for realization of temperature-induced cracking trend assessment and the development of science and construction technology of concrete cooling.

关 键 词：大体积混凝土 水化热 筏板基础 温度场 

分 类 号：TU528.01[建筑科学—建筑技术科学]