Seismic behavior of energy dissipation shear wall with CFST column elements

Hao Su, Lihua Zhu, Yaohong Wang, Lei Feng, Zeyu Gao, Yuchen Guo, Longfei Meng and Hanquan Yuan

Abstract

To develop high-efficiency lateral force resistance components for high-rise buildings, a novel energy dissipation shear wall with concrete-filled steel tubular (CFST) column elements was proposed. An energy dissipation shear wall specimen with CFST column elements (GZSW) and an ordinary reinforced concrete shear wall (SW) were constructed, and experimented by low-cycle reversed loading. The mechanical characteristics of these two specimens, including the bearing capacity, ductility, energy dissipation, and stiffness degradation process, were analyzed. The finite-element model of the GZSW was established by ABAQUS. Based on this finite-element model, the effect of the placement of steel-plate energy dissipation connectors on the seismic performance of the shear wall was analyzed, and optimization was performed. The experiment results prove that, the GZSW exhibited a superior seismic performance in terms of bearing capacity, ductility, energy dissipation, and stiffness degradation, in comparison with the SW. The results calculated by the ABAQUS finite-elements model of GZSW corresponded well with the results of experiment, and it proved the rationality of the established finite-elements model. In addition, the optimal placement of the steel-plate energy dissipation connectors was obtained by ABAQUS.

Key Words

CFST column elements; finite-element; rubber energy dissipation belts; seismic performance; shear wall; steel-plate energy dissipation connectors

Address

Hao Su:School of Civil Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, China Lihua Zhu:1) School of Civil Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, China 2) Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education (Xi'an University of Architecture and Technology), No.13, Yanta Road, Xi'an, Shaanxi, China Yaohong Wang:School of Civil Engineering, Inner Mongolia University of Technology, No.49, Aimin Street, Hohhot, Inner Mongolia, China Lei Feng:Inner Mongolia Power (GROUP) Co., Ldt, Hohhot, Inner Mongolia, China Zeyu Gao:Dongtai Municipal Education Bureau, Dongtai, Jiangsu, China Yuchen Guo:6School of Highway, Chang'an University, Xi'an, Shaanxi, China Longfei Meng:School of Civil Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, China Hanquan Yuan:School of Civil Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Xi'an, Shaanxi, China

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