（西安建筑科技大学土木工程学院， 西安 710055）

［摘要］为了研究方钢管混凝土框架内置十字加劲薄钢板剪力墙的抗震性能，分别对1/3缩尺比的单跨两层方钢管混凝土框架内置十字加劲薄钢板剪力墙和方钢管混凝土框架内置非加劲薄钢板剪力墙进行了低周反复荷载试验，得到了方钢管混凝土框架内置薄钢板剪力墙的荷载-位移滞回曲线、骨架曲线、特征荷载和位移及抗震性能指标等，分析了结构的破坏特征、延性、耗能能力、承载能力及刚度退化等性能。结果表明：方钢管混凝土框架内置薄钢板剪力墙具有较高的承载能力、抗侧刚度、良好的延性及耗能性能；十字加劲肋的设置降低了薄钢板墙的高厚比，有效抑制了薄钢板墙的面外变形，改善了薄钢板墙的受力性能，提高了其强度和刚度。

［关键词］方钢管混凝土框架； 薄钢板剪力墙； 十字加劲肋； 低周反复荷载试验； 抗震性能

中图分类号：TU391文献标识码：A文章编号：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

*国家自然科学基金项目资助（51108369,51678474），陕西省科技新星项目资助（2013KJXX-54），住房与城乡建设部科学技术项目（2014-K2-007）。

作者简介：王先铁，博士，教授，Email:wangxiantie@163.com。