（1 烟台新思创土木工程技术有限公司， 烟台  264005； 2 烟台大学土木工程学院， 烟台 264005）

［摘要］通过对3片不同轴压比作用下的普通钢管束混凝土组合剪力墙和3片底部加强钢管束混凝土组合剪力墙的拟静力试验，研究了其在低周往复荷载作用下的受力性能与破坏模式，分析了承载力、延性、刚度、耗能等性能指标，探讨了轴压比、底部加强区高度等因素对其抗震性能的影响。试验结果表明：其他条件保持不变情况下，剪跨比λ=1-5，轴压比在0-1～0-3范围内时，随轴压比增大，剪力墙延性变差，水平承载能力显著提高；采用底部加强的方式，可以显著提高钢管束混凝土剪力墙的水平承载能力和耗能性能；在轴压比n=0-2时，随底部加强区高度增加，其耗能性能显著提高。

［关键词］组合剪力墙； 钢管束； 轴压比； 底部加强

中图分类号：TU398-2文献标识码：A文章编号：1002-848X(2020)05-0109-07

Experimental study on seismic behaviour of composite shear wall with bundled steel tube and infill concrete when shear span ratio is 1-5

Zhang Peng1, Zhou Xingang2, Miao Zhihua1, Liu Kezhong2

(1 Yantai Xinsichuang Civil Engineering Technology Co., Ltd., Yantai 264005, China;2 School of Civil Engineering, Yantai University, Yantai 264005, China)

Abstract:Quasi-static test on three composite shear wall with bundled steel tube infill concrete under different axial compression and three bottom reinforced composite shear wall with bundled steel tube infill concrete were conducted. The seismic performance and failure modes were observed under low cyclic lateral loads. Bearing capacity, ductility, stiffness, energy dissipation and other indicators were analyzed, and the effects of axial compression, bottom reinforced height on seismic performance were studied. The results indicate that in the case of other conditions remain unchanged, when the shear span ratio is equal to 1-5，with the increase of the axial compression ratio，ranging from 0-1 to 0-3， the ductility of shear wall decrease and the bearing capacity significantly increases. The bearing capacity and energy dissipation of composite shear wall with bundled steel tube and infill concrete  can be improved by the bottom reinforcement method. When the axial compression ratio is equal to 0-2, the energy dissipation of the shear wall were significantly improved with the increase of bottom reinforced height.

Keywords:composite shear wall; bundled steel tube; axial compression ratio; bottom reinforcement

通讯作者：周新刚，博士，教授，Email:ytuzhou@126.com。