【摘要】 通过两根简支梁的试验,研究了碳纤维布加固钢筋混凝土梁的受弯性能.试验结果表明,经碳纤维布加固后的钢筋混凝土梁的开裂载荷、极限载荷和刚度均有不同程度的提高,裂缝宽度明显减小.另外,针对试验中加固梁破坏时碳纤维强度并未完全发挥这一现象,提出在实际加固应用中应考虑适当的碳纤维强度利用系数.更多还原

【Abstract】 Flexural behaviors of two simplysupported reinforced concrete beams strengthened with carbon fiber sheet(CFS) are tested.Meanwhile the behaviors of the strengthened beam and CFS strips are analyzed individually.The results of the tests show that the crack load、the ultimate load and the rigidity of reinforced concrete beam strengthened with CFS increase while the crack width decreases visibly.Moreover a cofficient is put forward to consider the reduction of the strength of CFS based on the phenomenon appeared in tests,that the CFS has not yet taken its advantage to the full when the strengthened beam destroys.The proposed coefficient should be considered in practical application.更多还原