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(1 中建一局集團(tuán)建設(shè)發(fā)展有限公司，北京 100044；2 中設(shè)安泰（北京）工程咨詢有限公司，北京 100044；3 北京建筑大學(xué)土木與交通工程學(xué)院，北京 100044)
［摘要］針對北京CBD核心區(qū)Z13地塊超高層建筑（中國人壽）主體結(jié)構(gòu)外框架柱采用的矩形鋼管混凝土柱與混凝土梁及樓板連接問題，提出了矩形鋼管混凝土柱與梁板式樓蓋連接裝置。為研究該連接裝置的實(shí)際受力性能，進(jìn)行了兩組矩形鋼管混凝土柱與梁板式樓蓋連接裝置試驗(yàn)。在低周往復(fù)加載作用下，研究試件的滯回曲線、骨架曲線、破壞形態(tài)、耗能能力等力學(xué)性能。研究結(jié)果和工程實(shí)踐表明：考慮樓板的連接裝置試件相較于不考慮樓板的試件，承載能力及整體剛度更高，延性性能略有降低?？紤]樓板作用時(shí)，型鋼牛腿承擔(dān)剪力更小，設(shè)計(jì)時(shí)可按30%梁端荷載設(shè)計(jì)型鋼牛腿截面，達(dá)到節(jié)約鋼材的目標(biāo)。
［關(guān)鍵詞］超高層建筑； 矩形鋼管混凝土柱； 梁板式樓蓋； 連接裝置； 低周往復(fù)加載
中圖分類號：TU375-4 文獻(xiàn)標(biāo)識(shí)碼：A文章編號：1002-848X(2021)12-0098-06
Experimental study on connection device of rectangular concrete-filled steel tubular column and beam-slab floor
KONG Yatao1, XU Bin2, ZHANG Yanxia3, SUN Yu3
(1 China Construction First Group Corporation Limited，Beijing 100044， China；2 China Design Security (Beijing) Engineering Consultancy Co., Ltd.，Beijing 100044， China；3 School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture，Beijing 100044， China)
Abstract:In view of the connection problems of the rectangular concrete-filled steel tubular columns, the concrete beam and slab used in the outer frames of the main structure of the super high-rise building (China Life) in the Z13 project of CBD core area in Beijing, a connection device of rectangular concrete-filled steel tubular column and beam-slab floor was proposed. In order to study the actual mechanical performance of the connection device, two groups of the connection devices of rectangular concrete-filled steel tubular column and beam-slab floor were tested. Under low-cycle reciprocating loading, the mechanical properties of the specimens such as hysteresis curve, skeleton curve, failure morphology, and energy dissipation capacity, were analyzed. The research results and engineering practice show that the test specimen of the connection device considering floor slab has higher bearing capacity and overall rigidity as well as lower ductility than that without considering floor slab. As considering the effect of the floor slab, the profiled steel corbel bears less shear force and the section of the profiled steel corbel can be designed according to 30% of the beam end load during the design to achieve the goal of saving steel.
Keywords:super high-rise building； rectangular concrete-filled steel tubular column； beam-slab floor； connection device； low-cycle reciprocating loading
*國家自然科學(xué)基金面上項(xiàng)目（51778036），長江學(xué)者和創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃資助（IRT_7R06）。
作者簡介：孔亞陶，學(xué)士，高級工程師，Email：kongyatao@163.com；通信作者：張艷霞，博士，教授，博士生導(dǎo)師，Email: zhangyanxia@bucea.edu.cn。
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