CFRP加固钢筋混凝土梁的抗弯力学性能试验研究

Experimental study on mechanical performance of RC beam strengthened with CFRP

对采用碳纤维增强复合材料(CFRP)加固的钢筋混凝土梁和未加固的钢筋混凝土梁进行了三点式弯曲加载试验,研究CFRP加固技术对钢筋混凝土梁的抗拉、抗压承载力以及抗弯性能等各方面的影响.试验表明,CFRP加固后能够有效延长梁的裂缝出现的时间,并能抑制裂缝的扩展,CFRP加固后的钢筋混凝土梁的极限承载力、抗拉和抗压能力以及抗弯性能均有较大提升,同时通过有限元软件对CFRP加固后的钢筋混凝土梁的力学性能进行分析,模拟结果与实验结果相一致.

By performing three-point mode bending load tests on carbon fiber reinforced polymer(CFRP)reinforced concrete beams and simple reinforced concrete beams,the research on the influences of CFRP on the stretching,compression,bending resistance,as well as loading capacity was carried out.The experimental results showed that the CFRP reinforced concrete beams can effectively postpone the appearance and restrain the extension of cracks.Meanwhile,the mechanical properties mentioned above were greatly enhanced.Meanwhile,the mechanical properties of reinforced concrete beams strengthened with CFRP are analyzed by finite element software.The simulation results are consistent with the experimental results.