复合材料套箍混凝土轴压柱的试验研究

為解決鋼筋或鋼管容易發生銹蝕的問題 ,進行了纖維復合材料套箍混凝土軸壓柱的試驗 .結果表明 ,玻璃纖維復合材料管的套箍作用很大 ,抗變形能力很強 ,受力性能與鋼管混凝土類似 .碳纖維復合材料箍對混凝土的套箍作用也很明顯 ,隨著碳纖維復合材料箍間距的減少 ,柱極限荷載穩步提高 .它與復合材料管混凝土柱比可節省造價 ;與螺旋筋混凝土柱比可節省模板 ,方便施工. In a moist environment, especially w hen higher co ntent o f chloride io n present, the conv entional concrete co nstrained by steel stirrups or steel tubes can be easily deterio rated due to the corro sion o f steel. In order to solv e the problem o f co rrosio n, the composite reinforced concrete is being developed. In this research, the axial-compressed co ncrete co lumn constrained by fiber composite was studied experimentally. The results indicated that the co nstraint of g lassfiber compo site tube is v ery effective. The mecha nical pro perty is similar to that of steel tubula r concrete co lumn. The constraint o f carbon-fiber composite hoop is also obvious. The ultimate lo ad of co lumn increase steadily with the spacing of carbon-fiber compo site hoo p decreases. Its cost is less than composite tubular co ncrete column. It can eliminate the fo rmw ork a nd is conv enient for co nstructio n as compared to spiral steel stirrups confined co ncrete column.