하이브리드 FRP로 보강된 철근콘크리트 보의 휨 거동에 관한 연구

Abstract

The construction method making use of FRP fiber has a strength in that it makes construction work easier than the existing method; however, this method shows a weakness that causes brittle failure of reinforced structures. To minimize such a weakness of FRP fiber, ongoing research is being done actively on the hybrid FRP sheet, which is manufactured by combining more than one fiber. The researcher manufactured total six test bodies by making use of hybrid FRP fiber in which carbon fiber and glass fiber were admixed, and performed tests taking reinforcement material type and reinforcement method as variables. The results from test revealed that, in case of the test bodies of which reinforcement methods were different, their compressive strength and maximum load were similar, so then reinforcement methods doesn't affect reinforcement effect. In the test bodies using different reinforcement materials, the test body using FRP sheet has the higher maximum load and displacement at the time of applying the maximum load, than the test bodies with FRP panel. Therefore, it is considered that when reinforcing the building making use of hybrid fiber, FRP sheet is more effective than FRP panel.