摘要
为了进一步研究CFRP(碳纤维增强复合材料)布加固GFRP(玻璃纤维增强复合材料)筋与钢筋混合配筋混凝土梁的的抗弯性能,对组合构件的极限载荷和跨中挠度进行分析。利用ABAQUS有限元软件,对比试验数据建立了GFRP筋与钢筋混合配筋混凝土梁的有限元模型。基于建立的模型分析CFRP布不同加固方式、加固层数对混合配筋混凝土梁抗弯性能的影响。研究表明,CFRP布加固GFRP筋与钢筋混合配筋混凝土梁可以显著提高原构件的承载能力和刚度;加固后试件的极限承载力和刚度随着加固层数的增加而增大,并得出最佳加固层数为2层;全包加固试件比梁底加固试件的极限承载力提高更为显著。
In order to further investigate the bending performance of CFRP(carbon fiber reinforced composite)sheets reinforced GFRP(glass fiber reinforced composite)bars with steel reinforcement mixed reinforced concrete beams,the ultimate loads and mid-span deflections of this combined member were analyzed and studied.The finite element model of GFRP and steel reinforced concrete beam was established by using ABAQUS finite element software and comparing the test data.Based on the established model,the influence of different reinforcement methods and layers of CFRP cloth on the flexural performance of the concrete beam with mixed reinforcement was analyzed.It is shown that the ultimate bearing capacity and stiffness of the reinforced specimens increase with the increase of the number of reinforcement layers,and the optimum number of reinforcement layers is two.The ultimate bearing capacity of the specimens strengthened by the whole package is more significant than that of the specimens strengthened by the beam bottom.
作者
周乐
佟宇
张美娜
ZHOU Le;TONG Yu;ZHANG Meina(School of Civil Engineering,Shenyang University,Shenyang 110044,China;Technical Innovation Center of Bridge Safety Engineering of Liaoning Province,Shenyang 110122,China;Department of Road and Bridge Engineering Liaoning Provincial College of Communications,Shenyang 110122,China)
出处
《沈阳大学学报（自然科学版）》
CAS
2022年第6期478-484,共7页
Journal of Shenyang University：Natural Science
基金
辽宁省教育厅项目(LJKZ1168)
辽宁省桥梁安全工程专业技术创新中心2021年度开放基金项目(2021-10)。
关键词
加固
纤维增强复合材料
混合配筋混凝土梁
抗弯承载力
计算公式
reinforcement
fiber-reinforced composites(FRP)
mixed reinforced concrete beam
flexural capacity
computational formula
