混凝土厚墙结构温度自约束应力的计算  

Study of the thermal self-restraining stress of structure of concrete thick wall

作　　者：乔润德[1] 王超[1] 王春[1] 黄曦[1] 

机构地区：[1]合肥工业大学土木建筑工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2001年第3期358-361,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：混凝土厚墙结构是大体积混凝土结构的一种 ,此类结构要考虑水泥的水化热作用。采用有限差分法计算出水化热最大内外温差 ,混凝土收缩用等效温差的方法进行考虑。用等效荷载法解出温度自约束应力 ,以此验算混凝土结构表面是否开裂 ,从而指导施工。Concrete thick wall is a sort of bulk concrete structure,and designing of this kind of structure must take into account the hydration reaction. The finite difference method is adopted to calculate the maximum difference of temperature between the inside and outside of the wall, and the contracting of concrete is considered by means of equivalent difference of temperature. The thermal self restraining stress is calculated by the method of equivalent load in order to check whether the surface of the concrete structure will crack or not, then proper suggestions may be made on the construction.

关 键 词：厚墙结构 温度应力 有限差分法 水化热反应 热传导 混凝土 

分 类 号：TU528.35[建筑科学—建筑技术科学]