摘要
昆明某连体天幕为高烈度区连接超高层塔楼及商业裙房的大跨度连体钢桁架,其中塔楼采用钢筋混凝土框架-剪力墙结构体系,商业裙房采用钢筋混凝土框架结构体系。对连体桁架与主体结构不同连接方式进行了对比,发现采用摩擦摆滑动支座进行连接可显著减小对塔楼相关构件内力的影响。对结构进行了弹性分析和非线性屈曲稳定分析,对关键节点采用性能化分析方法。同时,通过大震弹塑性分析,支座最大滑动量满足其性能要求,并针对结构薄弱环节进行加强。对关键节点进行了有限元分析,验证了节点的可靠性,计算结果均满足结构安全性要求。
A conjoined sky curtain in Kunming is a large-span conjoined steel truss connecting a super high-rise tower and a commercial podium in a high-intensity area. The tower adopts a reinforced concrete frame-shear wall structural system, and the commercial podium adopts a reinforced concrete frame structural system. The different connection methods of the connected truss and the main structure were compared, and it was found that the friction pendulum sliding bearing was used for connection, which can significantly reduce the influence on the internal force of the related components of the tower. The elastic analysis and nonlinear buckling stability analysis of the structure were carried out, and the performance analysis method was adopted for the key nodes. At the same time, through the elastoplastic analysis of large earthquakes, the maximum sliding amount of the bearing meets its performance requirements, and the weak links of the structure were strengthened. The finite element analysis of the key nodes had been carried out to verify the reliability of the nodes, and the calculation results meet the structural safety requirements.
作者
李文斌
LI Wenbin(Shenzhen Capol International&Associates Co.,Ltd.,Shenzhen 518045,China)
出处
《建筑结构》
CSCD
北大核心
2022年第3期38-42,共5页
Building Structure
关键词
大跨钢结构
连体天幕
摩擦摆
多尺度法
性能化分析方法
large-span steel structure
conjoined sky curtain
friction pendulum
multiscale method
performance analysis method
