【摘要】 采用15根模型钢梁的试验研究,结果表明:利用不同长度,不同厚度补片加固后的梁静强度的变化是不一样的;全长补片短补片长度加固效果好,随补片厚度的增加其静强度也有所增加,与未加固对比梁相比较最大静承载力提高55%;梁加固前后的刚度变化不太明显;加固后梁的延性有所降低.更多还原

【Abstract】 Fifteen pre-cracked steel beams are tested through three point bending experiment.The difference between the repaired steel beams with carbon fiber polymer sheets and control beams is studied in details.The experiments shows improvement of pre-cracked steel beams strengthened with CFRPs have an average raise more than 37% in strength,maximums is 55%.Whereas the flexural stiffness is no more than control beam’s.更多还原