
长沙某超高层住宅楼结构分析与设计
StructuralAnalysisandDesignof aHigh-riseResidentialBuildinginChangsha
毕朝阳,冯克,苏云鹅
(中国电子工程设计院,北京100142) BI Zhao-yang, FENGKe,SUYun-peng
(China Electronics Engineering Design Institute,Beijing100142,China)
建策与结构设计
【摘要】某超高层住宅楼结构高度193.6,结构形式采用钢筋混凝土框架一核心筒结构,属于超高层结构,该塔楼核心简的高宽比较大,且Y向框架柱数量较少,分则运用了PKPM和BTABS两种计算款件对该举楼进行了多通地囊下的反应谱分析,以保证其计算结果的可靠性,在此基础上,又进一步利用BTABS软件对该结构进行了弹性时程反应分析。针对本超高层住宅楼自身的结构特性,对其设定适宜的性能目标,完成在设防致度地震下的中震弹性和中震不屈服的计算分析,以及平遇地震下的动力弹塑性时程分析,从而实现结构的性能化设计。
[Abstract ]The structural height of the residential building is 193.6 mcters, with a reinforced concrete frame core tube structural The quantity ofthe frame column in Y direction is relatively little. In order to make the analysis results safe and reliable, responsd spectrum analysis ofthe structure under frequent earthquake were made by the analysis software PKPM and ETABS respectively On the base ofresponse spectrum analysis, one artificial seismic wave and two natural scismic waves were selected to make elastic time-history analysis on the structure using ETABS. According to the characteristics ofthe project itself, the appropriate seismic performance objectives of structure was set up.The elastic and non-yielding analysis under moderate earthquake was completed. Elastic-plastic time-historyanalysis was analyzed by usingABAQUS software under scarce earthquake. Allthe analysis to ensure the completionofperformance-baseddesign.
【关键词】超限高层;反应谱分析;弹型性分析;基于性能的抗震设计
[Keywords ]super-high-rise building response spectrum analysis; elasto-plastic analysis; performance-based seismic design
【中图分类号】TU241.8
【文献标志码]A
[DO1]10.13616/j.cnki.gcjsysj.2014.11.008 1工程概况
本塔楼为长沙某综合体项目中的子项目R3住宅楼,建筑效果如图1。塔楼地上56层,地下4层,共计60层,建筑主要屋面高度为193.6m,总建筑面积25935m㎡。其地下4层为车库及设备用房,1~7层为商业部分,9层以上为住宅部分,在8【作者简介】毕朝阳(1981~),男,河北保定人,工程师,从事结构设
计与研究,(电子信箱))bizhy@126.com。万方数据
【文章编号】1007-9467(2014)11-0051-06
层、24层、39层设置避难层,其中8层和39层兼做机电转换层。
本楼设计使用年限为50a,结构安全等级为二级,抗震设防烈度6度,设计基本地需加速度为0.05g,设计地震分组为第一组。规范中对应的多遇地震下α_=0.04g,但该项目安全性评价报告"给出的地震影响系数最大值α=0.059g,本塔楼计算时采用安全评价报告值。建筑场地类别为Ⅱ类,特征周期 T,=0.35s,阻尼比取0.05。该地区重现期50a的基本风压为
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