摘要
某医院医疗综合楼为超长大开洞结构,详细分析了超长结构在温度作用和混凝土收缩作用下的楼板应力,计算过程中考虑了徐变应力松弛折减系数和混凝土刚度折减系数。分析结果表明:剪力墙的布置相比纯框架结构对楼板的约束作用更强,从而限制了温度应力的释放,而楼板多处开洞对于超长结构温度应力的释放十分有利,且随着楼层的增加楼板温度应力衰减显著。鉴于楼板大开洞,进行了中震作用下楼板应力分析,对于薄弱部位的楼板采取增加板厚、拐角圆滑处理可保证楼板可靠传递水平地震作用。
The multi-functional medical building is an overlong and large-openings structure.The slab stress of the overlong structure under the action of temperature and concrete shrinkage is analyzed in detail.The creep reduction factor and the concrete stiffness reduction factor are considered in the calculation process.The analysis results show that the arrangement of the shear wall is stronger than the pure frame structure,which limits the release of temperature stress,and the multiple openings of the slab are very favorable for the release of the temperature stress.As the floor increases,temperature stress is significantly attenuated.In view of the large openings of the slab,the stress analysis of the slab under the action of the medium earthquake is carried out.For the weak part of the slab,the increase of the thickness of the slab and the rounding of the corner can ensure the reliable transmission of horizontal earthquake by the slab.
作者
池祥
阚雪峰
谢晓东
Chi Xiang;Kan Xuefeng;Xie Xiaodong(East China Engineering Science and Technology Co.,Ltd.,Hefei 230024,China)
出处
《建筑结构》
CSCD
北大核心
2019年第S02期588-592,共5页
Building Structure
关键词
超长结构
大开洞
温度应力
中震分析
overlong structure
large-openings
temperature stress
medium earthquake analysis
作者简介
池祥,硕士,一级注册结构工程师,Email:chixiang1990.01@163.com。
