超长混凝土框架结构释放温度应力研究与实践  

Reduction of Temperature Stress of Concrete Frame with Large Longitudinal Length Using Sliding Support

作　　者：潘福婷[1] 李进[2] 李翠红[3] 吴京[1] 

机构地区：[1]东南大学RC/PC结构教育部重点实验室,江苏南京210096 [2]南京市房产管理局,江苏南京210010 [3]绍兴文理学院土木工程系,浙江绍兴312000

出　　处：《绍兴文理学院学报》2008年第7期51-54,共4页Journal of Shaoxing University

基　　金：南京市建委科研资助项目(2002-17)

摘　　要：超长混凝土框架结构在温度作用下引起的楼盖应力可以分为平均温度应力和弯曲温度应力两种.对于平均温度应力,可以采用对楼盖施加预应力的方式来解决,但是这种措施对弯曲温度应力的作用有限.结合弯曲温度应力的成因和分布特点,提出了在顶层边柱设置滑动支座的处理措施,并结合工程实例,探讨了这一措施的效果和构造.There are two kinds of temperature stress in the slab of the concrete frame with large longitudinal length, one is average temperature stress, the other is bending temperature stress. For the average temperature stress, we can reduce it by putting prestress on plate floor, but this measure has little influence on the bending temperature stress. Considering the reasons of the bending temperature stress and the characteristic distributed for it, in this paper, a measure is promoted by setting sliding support at the side column on the top floor of frame. Combining the project instance, this paper discusses its application effect and and structure.

关 键 词：超长混凝土结构 温度应力 滑动支座 

分 类 号：TU375.4[建筑科学—结构工程]