Abstract
In the present study, seismic performance of High-strength Concrete Encased Steel columns with Rectangular - spiral Stirrups (HCESRS) is investigated. The composite specimen was tested under reverse cyclic loading and numerically simulated by the finite element method. Using ABAQUS software, numerical analysis of the specimen was performed, including hysteresis curve, skeleton curve, stress comparison and energy dissipation. Experimental results were compared with the numerical simulation to verify the accuracy of the numerical analysis. The influence of parameter changes such as shear span ratio, axial compression, steel content of I-shape and steel yield strength of HCESRS column were investigated. It was found that as the shear span ratio increases, the ultimate bearing capacity of the member decreases and the deformation capacity increases. Due to the brittle failure characteristics of high strength concrete, the limit value of axial compression ratio of HCESRS column was systematically studied, and effect of axial compression ratio on the ductility for HCESRS column has been investigated. This numerical analysis reliably evaluated and analyzed the seismic response of the HCESRS column.
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