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(1 東南大學(xué)混凝土及預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點(diǎn)實(shí)驗(yàn)室， 南京 211189；2 武漢開來建筑設(shè)計(jì)股份有限公司， 武漢 430061)
［摘要］采用有限元分析軟件MSC.MARC對一復(fù)雜高層建筑建立了三維結(jié)構(gòu)抗震彈塑性數(shù)值分析模型。該建筑由頂部棚架將下部雙塔樓相連，形成高位連體結(jié)構(gòu)。對于頂部棚架與下部雙塔樓之間的連接，分別考慮設(shè)置鉸支座的強(qiáng)連接和設(shè)置摩擦擺支座的弱連接兩種不同方案?；诙鄺l地震波，考慮不同地震輸入工況，對兩種不同連接方案下的結(jié)構(gòu)模型進(jìn)行了罕遇烈度三向地震作用下的彈塑性時(shí)程分析，考察了結(jié)構(gòu)層間位移角、基底總剪力、棚架-塔樓連接支座反力等宏觀結(jié)果，并校核了結(jié)構(gòu)各構(gòu)件的微觀損傷破壞狀態(tài)，評價(jià)其抗震性能水準(zhǔn)。最后，通過比較高位連體連接部位的受力性能，體現(xiàn)了弱連接方案優(yōu)勢，且經(jīng)過計(jì)算分析，摩擦擺支座最大支座反力和滑移量可以滿足工程設(shè)計(jì)要求。
［關(guān)鍵詞］摩擦擺；高位連體結(jié)構(gòu)；彈塑性時(shí)程分析；抗震性能評價(jià)；框架-剪力墻結(jié)構(gòu)
中圖分類號：TU375 文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2021)24-0109-08
Numerical analysis research on seismic performance of high-position connected structure with friction pendulum
MIAO Zhiwei1, MA Dongliang1, ZHANG Zhiqiang1, LI Xinfang2
(1MOE Key Laboratory of Concrete and Prestressed Concrete Structures, Southeast University, Nanjing 211189， China;2 Wuhan Kailai Architectural Design Co., Ltd., Wuhan 430061， China)
Abstract: A three-dimensional elastic-plastic numerical seismic analysis model of a complex high-rise building was established by using the finite element analysis software MSC.MARC. The lower twin towers are connected by a top scaffolding to form a high-position connected structure. For the connection between the top scaffolding and the lower twin towers, two different schemes were considered: strong connection with hinge supports and weak connection with friction pendulum supports. Based on multiple seismic waves, different seismic input working conditions were considered, the elastic-plastic time-history analysis of the structural models were carried out on two different connection schemes under the three-dimensional rare earthquakes. The macro-results such as inter-story displacement angle, aggregate base shear and support reaction force of scaffold-tower connection were investigated. The microscopic damage and failure states of the structural components were checked and the seismic performance level was evaluated. Finally, the advantages of weak connection scheme were highlighted by comparing the mechanical performance of the high-position connected parts. Through calculation and analysis, the maximum support reaction force and slip amount of the friction pendulum support could meet the requirements of engineering design.
Keywords:friction pendulum； high-position connected structure； elastic-plastic time-history analysis； seismic performance evaluation； frame-shear wall structure
*國家自然科學(xué)基金項(xiàng)目（51008078）。
作者簡介：繆志偉，博士，副教授，碩士生導(dǎo)師，Email: zhiweiseu@sina.com。
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