Experimental Research on Concrete Confined by Width and Spacing of Straps of GFRP sheets

摘要

The technology of GFRP has received significant attentions in civil engineering due to their unique properties, such as high strength-toweight radio, good resistance to corrosion and fatigue, convenient to construction and no additional dimension. Study the properties of GFRP confining concrete column through eight groups of columns subjected to axial loading, the effect of width of straps and spacing of straps of GFRP sheets confining concrete column is analyesed. The results are the axial impressive strength and ductility of concrete prism wrapped by GFRP sheets or GFRP straps have all increased to a certain degree, the process of destruction of concrete prism wrapped by GFRP become slower than common concrete prism.