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（昆明新正東陽建筑工程設(shè)計(jì)有限公司， 昆明 650225）
［摘要］俊發(fā)城一期10號地塊超高層辦公樓結(jié)構(gòu)高度195-1m，為高度和高寬比均超限的乙類建筑，結(jié)構(gòu)采用雙重抗側(cè)力鋼框架-中心支撐（部分屈曲約束支撐）結(jié)構(gòu)體系?；诳拐鹦阅艿脑O(shè)計(jì)方法，采用YJK，ETABS軟件對結(jié)構(gòu)進(jìn)行了小震作用下的彈性分析，采用SAP2000軟件對結(jié)構(gòu)進(jìn)行了中震及大震作用下的彈塑性分析。結(jié)果表明，小震下屈曲約束支撐（BRB）均未屈服，軸力設(shè)計(jì)值滿足設(shè)計(jì)承載力的要求，中震、大震下BRB均能先于主體結(jié)構(gòu)屈服，且在大震下BRB耗能效果明顯，結(jié)構(gòu)的最大層間位移角小于規(guī)范限值。在構(gòu)件設(shè)計(jì)與驗(yàn)算方面，介紹了BRB與支撐框架處鋼梁抗剪連接件的設(shè)計(jì)方法與驗(yàn)算結(jié)果。
［關(guān)鍵詞］超高層建筑； 鋼結(jié)構(gòu)； 減震設(shè)計(jì)； 屈曲約束支撐； 抗震性能設(shè)計(jì)； 彈塑性分析
中圖分類號：TU973-3文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)05-0088-05
Energy dissipation design and analysis on a super high-rise steel structure in Kunming
Dong Tingshun, Yang Chao, Zhang Zhanshu
(Xinzhengdongyang Architectural & Engineering Design（Kunming）Co., Ltd., Kunming 650225， China)
Abstract:With structural height of 195-1m, the super high-rise office tower building of No.10 Plot of Junfa City belongs to the second-class building, height and height-to-width ratio of which exceeds the requirements of codes. The structural system of the tower adopts the dual lateral resistance steel frame-concentrically braced structure with partial buckling-restrained braces (BRBs). Based on the performance-based seismic design method in the aspect of structure calculation, YJK and ETABS programs were used to carry out elastic analysis under frequent earthquake, and SAP2000 program was used to carry out elastic-plastic analysis under fortification and rare earthquakes. Analysis results show that BRBs are not yielding and the axial force meets the requirements of design bearing capacity under frequent earthquake. Under fortification and rare earthquakes, the main structural members are not yield until the BRBs yield. The effect of BRBs on energy dissipation is obvious under rare earthquake, and the maximum structural interlayer displacement angle is less than the standard requirement. In the aspect of component design and checking, the design method and checking results of BRBs and the shear connector of the steel beams for the braced frames were introduced.
Keywords:super high-rise building; steel structure; energy dissipation design; buckling-restrained brace; performance-based seismic design; elastic-plastic analysis
作者簡介：董廷順，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email: 584681741@qq.com。
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