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http://dx.doi.org/10.5000/EESK.2003.7.1.001

Strength Characteristics of Square Concrete Column Confined by Carbon Composite Tube  

홍원기 (경희대 토목건축공학부)
김희철 (경희대 토목건축공학부)
윤석한 (경희대 건축공학과)
박순섭 (경희대 건축공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.1, 2003 , pp. 1-7 More about this Journal
Abstract
The carbon composite tube can play an important role in replacing or complementing longitudinal and transverse reinforcing steels by providing ductility and strength for conventional columns. In this study, both the experimental and analytical investigations of axial behavior of large-scale square concrete columns confined by carbon composite tube are presented. The specimens are filament-wound carbon composite with 90$^{\circ}$+30$^{\circ}$, 90$^{\circ}$+45$^{\circ}$ winding angle respect to longitudinal axis of tube. The instrumented large-scale concrete-filled composite tubes(CFCT) are subjected to monotonic axial loads exerted by 10,000kN UTM. The influence of winding angle, thickness of tube on stress-strain relationships of the confined columns is identified and discussed. Proposed equations to predict both the strength and ductility of confined columns by carbon composite tube demonstrate good correlation with test data obtained from large-scale specimens.
Keywords
carbon composite tube; confinement effect; winding angle; strength; ductility;
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