郑州银基冰雪酒店大跨高位桁架转换超限结构抗震设计  

Seismic design on out-of-code structure with large-span and high-position transfer truss of Zhengzhou ENJOY Snow Hotel

作　　者：张龑华 张根俞[3] 张恺 朱炳寅 ZHANG Yanhua;ZHANG Genyu;ZHANG Kai;ZHU Bingyin(Beijing Institute of Architectural Design,Beijing 100045,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China;Beijing Country Garden Fenghuang Real Estate Development Co.,Ltd.,Beijing 100071,China;China Architecture Design&Research Group,Beijing 100044,China)

机构地区：[1]北京市建筑设计研究院有限公司,北京100045 [2]清华大学土木工程系,北京100084 [3]北京碧桂园凤凰置业发展有限公司,北京100071 [4]中国建筑设计研究院有限公司,北京100044

出　　处：《建筑结构》2022年第2期79-86,109,共9页Building Structure

摘　　要：郑州银基冰雪酒店为7度抗震设防的标准设防类建筑,是具有6类不规则项的大跨高位转换超限结构。酒店大堂上方为最大跨度11m+20m+11m的三跨连续转换结构,上托7层标准客房共计10根框架柱。通过对梁式转换、斜柱转换和桁架转换的方案比选,选择了钢桁架以实现结构转换。通过不同形式的反应谱和时程分析考察了结构基本的变形和承载能力,同时补充了转换层型钢混凝土梁轴向应力分析、重力荷载下不考虑上部和下部结构共同工作的转换结构承载力分析、转换桁架防连续倒塌分析、中部转换区域独立模型抗震分析、差异沉降对转换桁架的影响分析和转换层楼板抗震分析等多项专项分析,保证了转换结构的安全。Zhengzhou ENJOY Snow Hotel is a standard fortification category structure with 7 degree seismic fortification. It is a large-span, high-position transfer structure with 6 irregular out-of-code items. A three-span and continuous-transfer structure is located in the top of the hall with the largest span of 11 m+20 m+11 m, which supports 10 frame columns of 7-storey standard guest rooms. Steel truss was selected as the transfer structure in the competition with transfer beam and transfer inclined column. Various forms of response spectrum analysis and time-history analysis were carried out to evaluate the basical deformability and load bearing capacity of the structure. At the same time, multiple special analysis including the axial stress analysis of the transfer steel-reinforced concrete beam, bearing capacity analysis of transfer structure without coincident work effects between upper and lower structure work together under gravity load, progressive collapse resistance assessment of transfer truss, seismic analysis of independent model of transfer structure in the middle zone, influence of differential settlement on transfer truss and seismic analysis of slab on transfer floor were conducted, which ensure the security of the transfer structure.

关 键 词：转换桁架 高位转换 抗震性能化设计 防连续倒塌 差异沉降分析 

分 类 号：TU318[建筑科学—结构工程]