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（西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）

［摘要］為了研究方鋼管混凝土框架內(nèi)置十字加勁薄鋼板剪力墻的抗震性能，分別對(duì)1/3縮尺比的單跨兩層方鋼管混凝土框架內(nèi)置十字加勁薄鋼板剪力墻和方鋼管混凝土框架內(nèi)置非加勁薄鋼板剪力墻進(jìn)行了低周反復(fù)荷載試驗(yàn)，得到了方鋼管混凝土框架內(nèi)置薄鋼板剪力墻的荷載-位移滯回曲線、骨架曲線、特征荷載和位移及抗震性能指標(biāo)等，分析了結(jié)構(gòu)的破壞特征、延性、耗能能力、承載能力及剛度退化等性能。結(jié)果表明：方鋼管混凝土框架內(nèi)置薄鋼板剪力墻具有較高的承載能力、抗側(cè)剛度、良好的延性及耗能性能；十字加勁肋的設(shè)置降低了薄鋼板墻的高厚比，有效抑制了薄鋼板墻的面外變形，改善了薄鋼板墻的受力性能，提高了其強(qiáng)度和剛度。

［關(guān)鍵詞］方鋼管混凝土框架； 薄鋼板剪力墻； 十字加勁肋； 低周反復(fù)荷載試驗(yàn)； 抗震性能

中圖分類號(hào)：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)22-0084-08

Experimental study on  concrete-filled square steel tubular frame-thin steel plate shear walls with cross stiffeners under low cyclic loading

Wang Xiantie, Wang Dongshi, Ma Yousufu, Liu Lida, Jia Guiqiang

(School of Civil Engineering, Xi′an University of Architecture & Technology, Xi′an 710055， China)

Abstract:In order to study the seismic behavior of concrete-filled square steel tubular frame-thin steel plate shear walls with cross stiffeners,   the low cyclic reversed loading experiments on one-bay two-story  concrete-filled square steel tubular frame-thin steel plate shear walls with cross stiffeners specimen  and concrete-filled square steel tubular frame-unstiffened thin steel plate shear walls specimen with a reduced scale 1/3 were conducted. The load-displacement hysteretic curves, skeleton curves, the characteristic loads and displacements, and seismic behavior indexes were obtained. The failure characteristic, ductility, energy dissipation capacity, bearing capacity and stiffness degradation were analyzed. The experimental results show that the concrete-filled square steel tubular frame-thin steel plate shear walls have higher load carrying capacity, lateral stiffness, favorable ductility and energy dissipation capacity. The cross stiffeners decrease the height-to-thickness ratio of thin steel plate walls. The cross stiffeners enhance the stiffness and strength of thin steel plate walls and reduce the out-of-plane deflection. The mechanical behavior of thin steel plate  walls with cross stiffeners  is improved.

Keywords:concrete-filled square steel tubular frame; thin steel plate shear wall; cross stiffener; low cyclic reversed loading; seismic behavior

*國(guó)家自然科學(xué)基金項(xiàng)目資助（51108369,51678474），陜西省科技新星項(xiàng)目資助（2013KJXX-54），住房與城鄉(xiāng)建設(shè)部科學(xué)技術(shù)項(xiàng)目（2014-K2-007）。

作者簡(jiǎn)介：王先鐵，博士，教授，Email:wangxiantie@163.com。