摘要
北京新机场航站楼核心区一层为437 m×565 m超大型单块混凝土板,由1152个隔震支座支撑。混凝土板由宽度4 m^4.5 m的结构后浇带分为11个区进行施工。为减小结构后浇带封闭施工对隔震支座水平位移的影响,基于航站楼温度场的分布模型及不同区域温度随时间的变化规律,研究了不同后浇带封闭顺序及施工进度下结构温度变形的变化规律。研究结果表明:在相同温度场分布下,后浇带封闭顺序对隔震支座最大水平位移影响很小;后浇带的施工进度对隔震支座位移的影响明显,存在最优施工进度,采用10天一个施工步的施工速度,隔震支座的位移最小。
The first floor of Beijing New Airport Terminal Building is a 437 m×565 m super large concrete slab supported by 1152 isolated bearings,which was divided into 11 sections by structural post-casting belts with a width of 4 m^4.5 m.In order to reduce the influence of the construction of the post-casting belts closure on the horizontal displacement of the isolation bearings,the variations of structural deformation under various sequences and schedules of closure construction were investigated based on the distribution model of the temperature field and the variation of the temperature in different regions.The results show that:the closure sequence of the postcasting belts has little effect on the maximum horizontal displacement of isolation bearings under the same temperature field;the construction schedule of the post-casting belt has obvious influence on horizontal displacement of isolation bearings;and when the cycle of construction step is 10 days,the displacement of the isolation bearings is the minimum.
作者
潘旦光
付相球
谭晋鹏
鲍占博
段先军
雷素素
PAN Dan-guang;FU Xiang-qiu;TAN Jin-peng;BAO Zhan-bo;DUAN Xian-jun;LEI Su-su(Department of Civil Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Urban Construction Group Co.,Ltd.Beijing 100088,China)
出处
《工程力学》
EI
CSCD
北大核心
2020年第S01期145-150,共6页
Engineering Mechanics
基金
土木工程防灾国家重点实验室开放基金项目(SLDRCE15-01)。
关键词
结构工程
后浇带
隔震支座
封闭顺序
施工进度
温度场
structural engineering
post-casting belts
isolation bearings
closing sequence
construction schedule
temperature field
