Axial Compression Ratio Limits of HSC Columns Confined with High-Strength Stirrups
A total of 10 high-strength concrete columns confined by high-strength complex stirrups were tested under cyclic lateral force and a higher constant axial loading. The results indicate that the hysteresis loop of this type of columns still shows plump spindle-shaped at higher axial compression ratio, with better ductility, energy dissipation capability and stronger anti-collapse ability; so setting closed high-strength stirrups is an effective measure to ensure the HSC columns good ductility and enhance its axial compression ratio limits. Additionally based on the experimental research and theoretical analysis, the limits of axial compression ratio of HSC columns at different levels of seismic are present in this paper.
K. Yang et al., "Axial Compression Ratio Limits of HSC Columns Confined with High-Strength Stirrups", Advanced Materials Research, Vols. 163-167, pp. 1024-1028, 2011