摘要
北京银泰中心工程塔楼A为63层的超高层钢结构,结构总高度249.5m。工程采用框架筒中筒结构体系,并以伸臂桁架在三个设备层形成了加强层提高结构的抗侧刚度。工程在风荷载和地震反应谱的选取上做了较为充分的论证,设计中通过选择延性较好的钢材、加强第二道抗震防线、提高结构在罕遇地震作用下的抗震性能及采取强节点弱构件的构造措施,使得结构抗震性能有了较为可靠的保障。Pushover分析结果也表明结构具有充足的抗震能力。
Steel building of Beijing Yintai Center is a super-high structure which has 63 floors with 249.5m total structural height. The tube-tube structure system is adopted ancl outtriggers are set in the three mechanical floors for strengthening floors. In selecting the wincl loacl ancl seis-response spectra, there clo much argumentation. The structural aseismatic capacity is ensured by selecting better ductile steel, reinforcing the second aseismatic line of defence, increasing aseismatic capacity under seldom-occurred earthquake ancl using strong nocle ancl weak member conformation. The Pushover analysis indicates that the building has goocl aseismatic capacity.
出处
《建筑结构》
CSCD
北大核心
2007年第11期1-4,共4页
Building Structure
关键词
伸臂桁架
静力弹塑性分析
流体阻尼器
能力谱
需求谱
屈强比
outtrigger
nonlinear static analysis
liquid dampers
energy spectrum
demand spectrum
ratio of yield to strength
