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（1 四川大學(xué)建筑與環(huán)境學(xué)院土木系， 成都 610065； 2 崇州壁寶節(jié)能墻體材料有限公司， 成都 611230）

［摘要］墻板與框架梁柱連接方式多種多樣，通過(guò)對(duì)2榀采用不同連接方式的框架-墻板結(jié)構(gòu)縮尺模型進(jìn)行水平推覆試驗(yàn)，觀察其受力變形破壞全過(guò)程，研究不同連接方式對(duì)結(jié)構(gòu)抗震性能的影響。研究表明，在柱頂水平位移逐漸增大的過(guò)程中，兩種不同連接方式填充墻的斜撐作用機(jī)制均隨著墻板的錯(cuò)動(dòng)、開(kāi)裂、破壞或平面外偏轉(zhuǎn)而發(fā)生變化，相應(yīng)地，框架梁柱的內(nèi)力分布發(fā)生動(dòng)態(tài)變化，但是兩者也呈現(xiàn)出明顯的差異。采用圖集給出的卡件連接方式時(shí)，加載前期墻板與梁柱之間可發(fā)生相對(duì)位移，該階段墻板對(duì)結(jié)構(gòu)整體剛度貢獻(xiàn)相對(duì)較小，但L形卡件的設(shè)置能夠?qū)w平面外的位移起到約束作用，直到結(jié)構(gòu)整體失效，墻體始終參與抵抗水平荷載直至出現(xiàn)對(duì)角斜拉裂縫；采用企業(yè)現(xiàn)行安裝工藝進(jìn)行連接時(shí)，拉結(jié)鋼筋的設(shè)置使得輕質(zhì)墻板與主體框架從受力之始即具有較好的整體性，加載前期對(duì)結(jié)構(gòu)的抗側(cè)剛度和抗側(cè)承載力具有較大貢獻(xiàn)，但后期因墻板發(fā)生平面外偏轉(zhuǎn)而退出工作。

［關(guān)鍵詞］墻板； 填充墻； 連接方式； 鋼筋混凝土框架； 抗震性能

中圖分類號(hào)：TU375-4文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)08-0016-06

Effect of connection modes of wallboard and frame beam-column on structural seismic behavior

Sun Jian1， Li Bixiong1， Meng Chunyang1, Zhao Zufang1, Mo Site2, He Sifen2

(1 Department of Civil Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China; 2 Chongzhou Bibao Energy-saving Wall Materials Co., Ltd., Chengdu 611230, China)

Abstract:Wallboard and frame beam-column connections are diverse. The pushover test was conducted on 2 pieces of scaling models of frame-wallboard structures with different connection modes to observe the whole process of mechanical deformation and failure, and the effect of different connection modes on seismic performance of structures was studied. The results show that in the process of increasing horizontal displacement at the top of columns, the bracing mechanism of the infilled walls with two different connection modes changes with the dislocation, cracking, failure or out-of-plane deflection of the wallboards. Correspondingly, the internal force distribution of the frame beams and columns changes dynamically, but there are also obvious differences between the two modes. Relative displacement may occur between wallboard and beam-column in the early stage of loading when using the card component connection method given in the code. In this stage, the contribution of wallboard to the overall stiffness of the structure is relatively small, but the setting of L-shaped card component can restrict the out-of-plane displacement of the wall until the whole structure fails, and the wall always participates in resisting horizontal load until diagonal tension  cracks appear. When using the current installation technology in enterprises, the setting of tied reinforcing bars makes the light wallboard and the main frame have a better integrity from the beginning of the stress. The pre loading period contributes greatly to the lateral stiffness and the lateral bearing capacity of the structure, but later the wallboard withdraws from work because of the out-of-plane deflection of the wallboard.

Keywords:wallboard; infilled wall; connection mode; reinforced concrete frame; seismic behavior

*省學(xué)術(shù)帶頭人培養(yǎng)基金（川人［2015］100-1），國(guó)家自然科學(xué)基金資助（51678379），國(guó)家重點(diǎn)研發(fā)計(jì)劃資助（2018YFC1508802）。

通訊作者：李碧雄，博士，教授，Email: libix@126.com。