Behavior of concrete columns confined by carbon composite tubes

被引:50
作者
Hong, WK [1 ]
Kim, HC [1 ]
机构
[1] Kyung Hee Univ, Coll Architecture & Civil Engn, Kyonggi Do 449701, South Korea
关键词
carbon composites; glass fibers; strength; filament winding;
D O I
10.1139/L03-078
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
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 experimental and analytical investigations of axial behavior of large-scale circular and square concrete columns confined by carbon composite tubes are presented. The specimens are filament-wound carbon composite with 90degrees + 90degrees, 90 +/- 60degrees, 90degrees +/- 45, and 90 30 winding angles with respect to a longitudinal axis of a tube. The instrumented large-scale concrete-filled composite tubes are subjected to monotonic axial loads exerted by a 10 000 kN universal testing machine (UTM). The influence of transverse dilation, winding angle, thickness of a tube, as well as shape of the column section on stress-strain relationships of the confined columns is identified and discussed. Proposed equations to predict both strength and ductility of confined columns by carbon composite tubes demonstrate good correlation with test data obtained from large-scale specimens.
引用
收藏
页码:178 / 188
页数:11
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