徐志堅1，楊超杰1，吳繼中2，樊欽鑫1，金來建1，付錦龍1，謝軍1
（1 中國航空規(guī)劃設(shè)計研究總院有限公司， 北京 100086；
2 中航資本控股股份有限公司， 北京 100022）
［摘要］中航資本大廈塔樓地上43層，建筑高度220m，采用帶加強層的框架-核心筒混合結(jié)構(gòu)體系。利用MIDAS Building對中航資本塔樓進(jìn)行8度罕遇地震作用下的動力彈塑性時程分析，并與大震彈性時程分析進(jìn)行對比，研究結(jié)構(gòu)在罕遇地震作用下的破壞機理、塑性發(fā)展特點。分析結(jié)果表明：在結(jié)構(gòu)進(jìn)入彈塑性階段后，結(jié)構(gòu)剛度降低，周期變長，與彈性分析相比地震反應(yīng)減小；結(jié)構(gòu)最大層間位移角滿足1/100的限值要求，連梁出現(xiàn)較大范圍的損傷，主要受力剪力墻塑性損傷較小，環(huán)臂桁架腹桿未出現(xiàn)屈服，結(jié)構(gòu)滿足“大震不倒”的設(shè)防要求。
［關(guān)鍵詞］超高層建筑； 混合結(jié)構(gòu)； 罕遇地震； 彈塑性時程分析
中圖分類號：TU318.2，TU973.1+4，O344.3文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)01-0038-06
Dynamic elasto-plastic analysis of AVIC Capital Tower
Xu Zhijian1, Yang Chaojie1, Wu Jizhong2, Fan Qinxin1, Jin Laijian1, Fu Jinlong1, Xie Jun1
(1 China Aviation Planning and Design Institute Co.， Ltd.， Beijing 100086， China；
2 AVIC Capital， Beijing 100022， China)
Abstract:AVIC Capital Tower has an architectural height of 220m with total 43 stories aboveground, and the frame-corewall mixed structural system with strengthened stories was adopted. The dynamic elasto-plastic time-history analysis under the excitation of 8 degree rare earthquake was performed on the building by MIDAS Building. The analysis was compared with the elastic time-history analysis under the rare earthquake, and failure mechanisms and plastic zone development characteristics of the structure under the rare earthquake were researched. The analysis results show that after the structure enters into the elasto-plastic stage, the structural stiffness decreases, the period is longer, and the seismic response is decreased compared with that in the elastic analysis. The maximum story drift ratio is less than 1/100, which fulfills the limitation requirement. Extensively damage is found in the coupling beams. Main shear walls suffer little plastic damage. The web member of belt truss does not yield. The structure can meet the fortification requirement of “not collapse under the rare earthquake”.
Keywords:super high-rise building； mixed structure； rare earthquake； elasto-plastic time-history analysis
作者簡介：徐志堅，碩士，工程師，Email：xuzhijianyd@126.com。
