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（1 煙臺新思創(chuàng)土木工程技術(shù)有限公司， 煙臺 264005； 2 煙臺大學(xué)土木工程學(xué)院， 煙臺 264005）
［摘要］通過對3片不同軸壓比作用下的普通鋼管束混凝土組合剪力墻和3片底部加強(qiáng)鋼管束混凝土組合剪力墻的擬靜力試驗(yàn)，研究了其在低周往復(fù)荷載作用下的受力性能與破壞模式，分析了承載力、延性、剛度、耗能等性能指標(biāo)，探討了軸壓比、底部加強(qiáng)區(qū)高度等因素對其抗震性能的影響。試驗(yàn)結(jié)果表明：其他條件保持不變情況下，剪跨比λ=1-5，軸壓比在0-1～0-3范圍內(nèi)時(shí)，隨軸壓比增大，剪力墻延性變差，水平承載能力顯著提高；采用底部加強(qiáng)的方式，可以顯著提高鋼管束混凝土剪力墻的水平承載能力和耗能性能；在軸壓比n=0-2時(shí)，隨底部加強(qiáng)區(qū)高度增加，其耗能性能顯著提高。
［關(guān)鍵詞］組合剪力墻； 鋼管束； 軸壓比； 底部加強(qiáng)
中圖分類號：TU398-2文獻(xiàn)標(biāo)識碼：A文章編號：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
通訊作者：周新剛，博士，教授，Email:ytuzhou@126.com。
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