Volume 13, Number 4 and A (Transaction A: Civil Engineering December 2015)                   IJCE 2015, 13(4 and A): 455-467 | Back to browse issues page
Abstract:   (2388 Views)

To study seismic performance of concrete-encased composite columns with T-shaped steel cross-section, twelve half-scale columns were tested under quasi-stastic cyclic loading. The result indicates that concrete-encased composite columns with T-shaped steel section possess good seismic performance. The failure modes include bending failure, shear-bond failure, shear compression failure and shear-composition failure. Unsymmetrical phenomenon of positive and negative hysteresis loop was shown evidently. Span ratio has a great influence on failure mode. The ductility performance decreases with increasing of axial compression level. As stirrup ratio increases, ductility and bearing capacity of columns are improved greatly, and energy dissipation capacity after yielding is enhanced. Cross tie can enhance ultimate bearing capacity, and lower strength attenuation and stiffness degradation on the later loading stage

Full-Text [PDF 1029 kb]   (1482 Downloads)    
Type of Study: Research Paper | Subject: Structure- Concrete