摘要
研究了碳纤维布约束混凝土方柱的轴向抗压性能,考虑了纤维布的粘贴方式、纤维布数量以及纤维布条之间的间距对约束效果的影响。重点分析了其破坏形态、承载力和轴向压应力与应变的关系,结果表明碳纤维布约束混凝土柱可不同程度地提高其抗压承载力和变形能力;整体加固效果明显优于条带加固;随加固率的增大,峰值应力、峰值应变、极限应力和极限应变都有所提高,轴向应力应变曲线的下降段趋于平缓。
Axial compression resistance performance of concrete square-columns confined by carbon fiber reinforced polymer （CFRP） sheets under axial compression was studied, with consideration of mayor factors affecting confinement of concrete such as： affix methods, amounts of CFRP, and space between fiber strips. The study focused on analysis of failure configuration, bearing capacity, axial stress-strain curve. The results showed that axial compressive strength and deformability are improved efficiently by using CFRP to strengthen concrete columns, the confining effect of whole section reinforcement is better than fiber strips reinforcement; with increase of reinforcement rate, peak stress, peak strain, limit stress and limit strain are all improved and decline of axial stress-strain curve is more smooth.
出处
《安徽理工大学学报（自然科学版）》
CAS
2009年第1期13-16,共4页
Journal of Anhui University of Science and Technology:Natural Science
关键词
碳纤维布
约束混凝土
方柱
轴压性能
carbon fiber sheet （CFS）
confined concrete
square-column
axial compression resistance performance
