超长混凝土结构温度场监测研究

The site test of super-length concrete structure

随着各种大型公共建筑的建设得到蓬勃发展,建筑结构的单体长度和功能要求也不断突破历史。而超长混凝土结构的大量采用,对抗裂措施提出了更新、更高的要求。为了保障抗裂措施经济有效,必须确定造成结构开裂的温度荷载的合理取值。本文结合一个具体的超长混凝土结构,从混凝土浇筑后开始,对其局部进行监测,得到了混凝土在水化阶段的温度变化规律、日照对结构不同区域温度场分布的影响规律以及结构在夏季典型日内的温度变化规律。

With the construction of large public buildings being booming,engineers have been making many historical breakthroughs in length and functions of buildings. And popularity of super-length buildings requires more effective and efficient measures to enhance the ability of crack resistance of structures. To insure the efficiency of crack control measures,it is vital to determine the reasonable value of temperature load which causes cracks of concrete. In this paper,based on data of the site test of a certain super-length concrete structure,it summarizes the influences of hydration on structure. Meanwhile,the influences of sunshine on different parts of structures are concluded.