- 摘 要
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（中機(jī)國際工程設(shè)計研究院有限責(zé)任公司， 長沙 410007）
［摘要］長沙CBD某超高層結(jié)構(gòu)高度249-65m。根據(jù)塔樓使用人數(shù)，結(jié)構(gòu)按標(biāo)準(zhǔn)設(shè)防類進(jìn)行抗震設(shè)計；對比風(fēng)洞試驗數(shù)據(jù)和規(guī)范值，采用規(guī)范數(shù)值進(jìn)行設(shè)計。塔樓采用框架-核心筒+伸臂桁架+柱間支撐結(jié)構(gòu)體系，結(jié)構(gòu)底部框架柱內(nèi)設(shè)型鋼以增強(qiáng)結(jié)構(gòu)剛度，使核心筒剪力墻免于受拉。通過多方案優(yōu)化，結(jié)構(gòu)周期、剪重比、剛重比等指標(biāo)均控制在合理范圍。采用YJK，ETABS軟件對結(jié)構(gòu)進(jìn)行了多遇地震彈性分析、設(shè)防地震分析和罕遇地震動力彈塑性分析，驗證了結(jié)構(gòu)的耗能性能，且結(jié)構(gòu)達(dá)到了抗震性能目標(biāo)。各項結(jié)構(gòu)分析指標(biāo)滿足規(guī)范及超限審查要點要求，結(jié)構(gòu)安全可靠、經(jīng)濟(jì)合理。
［關(guān)鍵詞］超高層建筑； 框架-核心筒結(jié)構(gòu)； 伸臂桁架； 柱間支撐； 動力彈塑性分析
中圖分類號：TU972文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)23-0049-06
Structural design of a super high-rise building in Changsha CBD
Zhang Jianhua, Tan Guangyu, Zhang Fengliang, Hu Dengxian, Li Deng, Zhou Qinghan, Zou Chao， Peng Yasong
(China Machinery International Engineering Disign & Research Institute Co.， Ltd.， Changsha 410007， China)
Abstract:A super high-rise project in Changsha CBD has a structural height of 249-65m. According to the number of tower users, the structure was designed for earthquake resistance according to the standard fortification category. The wind tunnel test data with standard value were compared, the standard value was adopted to design. The tower adopts a frame-corewall structure+ outrigger truss + inter-column support system, and the frame column at the bottom of the structure was provided with section steel to enhance the structural rigidity and prevent the shear wall from being pulled. Through comparison of multiple schemes, the structural period, shear-weight ratio and rigid-to-weight ratio were all controlled within a reasonable range. YJK and ETABS software were used to analyze the structure under frequent earthquakes, fortification earthquakes and rare earthquakes. The energy dissipation performance of the structure was verified and the seismic performance target was achieved. All structural analysis indexes meet the requirements of the specification, and the structure is safe, reliable and economical.
Keywords:super high-rise building; frame\|corewall structure; outrigger truss; inter-column support; dynamic elasto-plastic analysis
作者簡介：張建華，學(xué)士，教授級高級工程師，一級注冊結(jié)構(gòu)工程師，Email:371643439@qq.com。
