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（中南建筑設(shè)計院股份有限公司， 武漢 430071）
［摘要］湖北省科技館采用巨型鋼框架-支撐結(jié)構(gòu)體系，存在尺寸突變、扭轉(zhuǎn)不規(guī)則、樓板不連續(xù)等不規(guī)則項，屬于超限結(jié)構(gòu)。為改善結(jié)構(gòu)抗震性能，采取混合減震措施，在結(jié)構(gòu)內(nèi)布置屈曲約束支撐和防屈曲耗能鋼板墻2種消能減震器。采用ABAQUS軟件對結(jié)構(gòu)進行施工模擬分析及動力彈塑性時程分析，研究罕遇地震作用下屈曲約束支撐和防屈曲耗能鋼板墻混合減震效果，并給出定量評估，包括結(jié)構(gòu)位移響應(yīng)、構(gòu)件損傷、能量耗散分布等。分析結(jié)果表明：2種消能減震器布置于結(jié)構(gòu)薄弱位置，在提供結(jié)構(gòu)剛度的同時，罕遇地震作用下作為結(jié)構(gòu)第一道抗震防線，防屈曲耗能鋼板墻產(chǎn)生良好的屈服塑性變形，屈曲約束支撐滯回耗能顯著，有效保護了主體結(jié)構(gòu)。
［關(guān)鍵詞］湖北省科技館；巨型結(jié)構(gòu)；混合減震；屈曲約束支撐；防屈曲耗能鋼板墻；動力彈塑性分析
中圖分類號：TU318+.2文獻標(biāo)識碼：A文章編號：1002-848X(2021)03-0090-08
Dynamic elasto-plastic time history analysis on hybrid damping mega structure of Hubei Science and Technology Museum
ZHANG Shen, MENG Zhongyong, CHENG Ming, LI Ting, XU Min, XIONG Sen, CHEN Yuankun
(Centralsouth Architectural Design Institute Co. Ltd., Wuhan 430071, China)
Abstract:Hubei Science and Technology Museum adopts mega steel frame-braced structure system, which has irregular items such as size mutation, torsion irregularity and floor discontinuity, which belongs to ultra limit structure. In order to improve the seismic performance of the structure, hybrid damping measures were adopted, two kinds of energy dissipating dampers, buckling-restrained braces and bucking-restrained steel walls were arranged in the structure. The construction simulation analysis and dynamic elastic-plastic time history analysis were carried out by ABAQUS software, the hybrid seismic reduction effect of buckling-restrained braces and bucking-restrained steel walls under rare earthquakes was studied, the quantitative evaluation was given, including structural displacement response, component damage and energy dissipation distribution, etc. Results show that two kinds of energy dissipation dampers were arranged in the weak position of the structure, while providing the structural stiffness, they acted as the first seismic defense line of the structure under rare earthquakes. The buckling-restrained steel walls produced good yield plastic deformation, and the hysteretic energy dissipation of buckling-restrained braces was significant, which effectively protected the main structure.
Keywords:Hubei Science and Technology Museum;mega structure;hybrid damping;buckling-restrained brace;buckling-restrained steel wall;dynamic elastic-plastic analysis
*住房與城鄉(xiāng)建設(shè)部建設(shè)科技計劃項目（2017-K5-014）。
作者簡介：張慎，博士，教授級高級工程師，Email:zhangshen202@163.com；通信作者：孟仲永，碩士，工程師，Email:451530485@qq.com。
