超长混凝土结构温度应力分析及裂缝控制措施分析  

Analysis of Temperature Stress and Crack Control Measures of Super-long Concrete Structure

作　　者：何沙沙 He Shasha(Fujian Ludu Construction Co.Ltd.,Fuzhou,Fujian 350001)

机构地区：[1]福建陆度建设有限公司,福建福州350001

出　　处：《江西建材》2024年第12期333-336,共4页

摘　　要：温度变化及收缩是造成超长混凝土开裂的主要原因。文中结合实际工程项目,利用有限元软件分析降温温差及后浇带封闭时间对超长混凝土结构的影响,并介绍了其他控制温度裂缝的有效措施。结果表明,降温温差越大,地下室顶板的温度应力越大;在降温温差的影响下结构长方向更易出现温度裂缝;设置后浇带是控制超长混凝土结构温度及收缩裂缝的有效措施。Temperature change and shrinkage are the main causes of cracking of super-long concrete.The influence of temperature difference and closing time of post-cast belt on super long concrete structure is analyzed by using finite element software,and other effective measures to control temperature cracks are introduced.The results show that the greater the temperature difference,the greater the temperature stress of basement roof;Temperature cracks are more likely to appear in the long direction of the structure under the influence of temperature difference.It is an effective measure to control the temperature and crack shrinkage of super long concrete structures to set up the post pouring belt.

关 键 词：超长混凝土结构 温度效应 裂缝控制措施 

分 类 号：TU74[建筑科学—建筑技术科学]