摘要
对5个混凝土简支梁试件进行了4种不同的加固试验。试验记录了混凝土梁的挠度、裂缝开展情况以及混凝土和钢筋的应变等。试验结果表明,加固后混凝土梁的承载力得到显著提高;混凝土梁的裂缝开展略晚,并且裂缝发展比较缓慢,裂缝宽度和间距都比较小;混凝土梁的刚度有一定的提高,尤其是钢筋屈服以后;但混凝土梁的延性有一定程度的降低。本试验可为实际工程应用提供参考。
In order to know the behaviors of RC beams strengthened with CFRP,design and complete the experimental researches on the flexural behaviors of five RC beams strengthened with CFRP.Based on the experiment results,the behaviors of RC beams,the cracking state and the failure modes,and the influence of the steel reinforcement ratio and concrete strength are analyzed.The experimental result indicates that these RC beams strengthened bear and stiff get notably raising the crack of RC beams strengthened develops slightly and late,and the cracks' width and space are smaller.The stiffness of the RC beams increased especially after the steel's yielding.While the ductility of RC beams reduced.It can be reference for actual engineering.
出处
《建筑结构》
CSCD
北大核心
2007年第S1期355-358,共4页
Building Structure
