Abstract

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Title:: Experiment on Seismic Performance of Steel Reinforced Concrete Shear Wall with Different Distributed Reinforcement Spacing

Author(s):: WANG Yu-zhuo; GAO Ying; WANG Hui-min; FU Chuan-guo; School of Civil Engineering, Shandong Jianzhu University

Keywords:: steel reinforced concrete shear wall; distributed reinforcement spacing; seismic behavior; low frequency cyclic loading

Abstract:: In order to study the impact law of distributed reinforcement spacing on the seismic behavior of steel reinforced concrete shear wall, four rectangular section steel reinforced concrete shear wall specimens (one of them was a common shear wall specimen without profile steel for comparison, the remaining three were test shear wall specimens with X-shaped steel concealed bracing) were designed for experimental study under low frequency cyclic loading. The results show that the bearing capacities of specimens decrease as the distributed reinforcement spacing increases, when the distributed reinforcement spacing is 100，150 and 200 mm,compared with the contrast specimen, the corresponding bearing capacity improves by 66.8%, 45.9% and 41%, respectively. When the distributed reinforcement spacing increases, the ductility of steel reinforced concrete shear wall specimens decreases linearly. Compared with the contrast specimen, when the distributed reinforcement spacing is 100，150 and 200 mm, the corresponding ductility improves by 27.8%，29.2% and 11.3%, respectively. When the distributed reinforcement spacing is smaller, the cracks appear more and denser, the range of plastic hinge is wider, the earthquake energy dissipation capacity is higher and the seismic performance is better.