Abstract
The steel-plate reinforced concrete shear wall with rectangular concrete filled steel tube (CFST) columns is a new kind of composite shear wall. In order to ascertain its seismic behavior and failure mechanism, four 1/5 scale specimens with the same shear span ratio 1.5, different thickness of the steel-plate and different axial force ratio, were tested under horizontal cyclic loading. The thickness of steel-plate in the walls is 2mm, 4mm, 4mm and 6mm, respectively. Based on the experiment, the load-bearing capacity, hysteretic characteristics, ductility, stiffness degradation, energy dissipation capacity and failure mode of the specimens were contrastively analyzed. And the effect of the ratio of height to sectional thickness of steel-plate and the value changes of axial force ratio on seismic behavior of the new shear wall was also analyzed. The result shows that the steel-plate reinforced concrete shear wall with rectangular CFST columns has good seismic performance and important engineering value.
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