现代交通技术2025，Vol.22Issue(3)：21-26,6.
二次受力作用下CFRP网格加固钢筋混凝土梁的抗剪性能分析
Analysis on Shear Resistance of Reinforced Concrete Beams with CFRP Grid under Secondary Loading
钟正强 1周子凯 1刘卓泽2
作者信息
- 1. 长沙理工大学土木与环境工程学院,长沙 410114
- 2. 湖南省高速公路集团有限公司,长沙 410153
- 折叠
摘要
Abstract
In order to study the shear properties of CFRP(carbon fiber reinforced polymer)reinforced pre-damaged concrete beams,the research conducted a shear test on 8 concrete beams,and did the simulation that was based on the ANSYS software.Preload level,CFRP grid spacing and strengthening area were taken as variables to analyze their effects on fail-ure mode of reinforced beams,mid-span deflection of concrete beams,vertical grid strain of CFRP and reinforcement strain.The results show that the calculation results of simulation are consistent with the experimental data analysis results,which veri-fies the feasibility of the finite element method.The shear capacity of the reference reinforced beam is increased by 22.51％compared with that of the reference beam.With the increase of the pre-damage load,the shear capacity of CFRP grid decreases,but the material utilization rate increases,which effectively alleviates the stiffness reduction caused by the pre-damage.For specimens with different strengthening locations,the beams fully side-bonded with CFRP grids exhib-it slower deflection development,the reinforcement materials effectively improved the stiffness and ductility of the specimen.关键词
有限元分析/二次受力/抗剪承载力/CFRP网格Key words
finite element analysis/secondary loading/shear bearing capacity/CFRP grid分类
建筑与水利引用本文复制引用
钟正强,周子凯,刘卓泽..二次受力作用下CFRP网格加固钢筋混凝土梁的抗剪性能分析[J].现代交通技术,2025,22(3):21-26,6.
