摘要
悬挂式高层建筑采用外框架和楼层梁分别施工的方法,外框架在逆向累积提升过程中,核心筒和屋顶桁架在日照效应下会影响外框架吊柱的精确定位。以上海金桥国培地块研发项目A塔为研究对象,建立有限元模型,结合上海地区夏季施工计算了日照温差,分析正面日照和45℃角日照两种工况下,累积提升过程中吊柱控制点的位移特征。结果表明,45℃角日照效应对提升框架关键点的变形影响无法满足施工要求。通过采取变形控制措施,计算表明,所有8个提升步中的最后3步结构的拼装应避免在最高温时45℃角日照时进行,其他结构可以全天候施工。
The suspension high-rise structure adopts the method of constructing the outer frame and the floor beams respectively.During the reverse cumulative lifting of the outer frame,the core tube and roof truss will affect the accurate positioning of the outer frame davit under the sunshine temperature difference effect.Taking the research and development project of tower A of Shanghai Jinqiao Guopei lots as the research object,this paper establishes a finite element model and calculates the sunshine temperature difference under the summer construction in Shanghai,and analyzes the displacement characteristics of the davit control point in the cumulative lifting process under the two working conditions of front sunshine and 45℃angle sunshine.The results show that the influence of 45℃angle sunshine effect on the deformation of key points of lifting frame cannot meet the construction requirements.By taking deformation control measures,the calculation shows that the assembly of the last three steps of all eight lifting steps should be avoided in 45℃angle sunshine and other structures can be constructed all day.
作者
寿建军
方顺生
田云雨
王锦全
Shou Jianjun;Fang Shunsheng;Tian Yunyu;Wang Jinquan(Hangzhou Shengjian Steel Structure Project Supervision Co.,Ltd.,Hangzhou 311200,China;Zhejiang Dadi Steel Structure Co.,Ltd.,Hangzhou 311200,China)
出处
《山西建筑》
2023年第6期118-121,146,共5页
Shanxi Architecture
关键词
悬挂式高层建筑
累积提升
日照效应分析
suspension high-rise structure
cumulative lifting
sunshine temperature difference effect analysis
