Experimental study on seismic behavior of interval concrete-filled steel tube composite shear wall

被引：0
|
作者：
Zhang Z. [1 ]
Chen M. [2 ]
Gong S. [1 ]
Cheng P. [1 ]
Liu C. [1 ]
机构：
[1] Department of Civil Engineering, Zhejiang University, Hangzhou
[2] Shanghai Open Steel Structure Co., Ltd., Shanghai
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2020年 / 41卷 / 11期
关键词：
Axial compression ratio; Composite shear wall; Concrete-filled steel tube; Quasi-static test; Seismic behavior;
D O I：
10.14006/j.jzjgxb.2019.0356
中图分类号：
学科分类号：
摘要：
Interval concrete-filled steel tube composite shear wall is a new type of anti-lateral force component, which is convenient in construction and flexible in layout. It has good economic benefits and engineering application value. In order to study the influence of axial compression ratio on the seismic performances of this new type of lateral resistance member. The horizontal low-cycle reversed loading test was carried out on three full scale four-tube interval concrete-filled steel tube composite shear wall specimens with different axial compression ratios. The failure characteristics and failure process of the composite shear walls were observed. The seismic performance indexes of composite shear walls such as hysteretic curve, skeleton curve, load-carrying capacity and stiffness degradation, ductility and energy dissipation capacity were obtained. The results show that the failure modes of composite shear walls are crushing of concrete inside the steel tubes, buckling of steel tube wall in the compression zone, and tearing in the connection area between batten plates and steel tubes. The stiffness and load-carrying capacity of composite shear wall are obviously enhanced with the axial compression ratio increased, but the ductility is reduced. Compared with the specimen with the axial compression ratio of 0, the bearing capacity of the specimen with the axial compression ratio of 0. 4 is increased by 25%, and the ductility is reduced by 19%. The ductility coefficients of the specimens are between 2.401-3.479. The ultimate drift angle is between 1/40-1/34. The equivalent viscous damping coefficients reach 0.15. The overall seismic performance is good. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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页码：51 / 60
页数：9
相关论文
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