大连理工大学学报2025，Vol.65Issue(4)：407-414,8.DOI:10.7511/dllgxb202504011
BFGCC加固锈蚀RC梁抗弯刚度试验研究
Experimental research on bending stiffness of corroded RC beams strengthened with BFGCC
摘要
Abstract
Through the bending behavior experiment of corroded reinforced concrete(RC)beams strengthened with basalt fiber reinforced polymer(BFRP)grid-reinforced engineered cementitious composite(ECC)(BFGCC),the effects of different reinforcement ratios,longitudinal reinforcement corrosion ratios and BFRP grid reinforcement amounts on the bending stiffness and mid-span deflection of corroded RC beams strengthened with BFGCC are studied.The results show that the use of BFGCC can effectively improve the crack distribution pattern,enhance the bending stiffness and reduce the mid-span deflection of corroded RC beams.The influence on bending stiffness is mainly concentrated in the post cracking stage of concrete,especially after the longitudinal reinforcement yielding,the degree of improvement in bending stiffness is significant,and the promotion in magnitude increases with the increase of BFRP grid reinforcement amounts.Based on theoretical analysis,a calculation formula for the bending stiffness of corroded RC beams strengthened with BFGCC is established,and the formula is verified by the mid-span deflection during normal use stage.The calculated values are in good agreement with the experimental values,providing a reference for the calculation of bending stiffness of corroded RC beams strengthened with BFGCC.关键词
锈蚀钢筋混凝土(RC)梁/玄武岩纤维增强复合材料(BFRP)/工程水泥基复合材料(ECC)/BFRP网格增强ECC(BFGCC)/受弯性能/抗弯刚度Key words
corroded reinforced concrete(RC)beam/basalt fiber reinforced polymer(BFRP)/engineered cementitious composite(ECC)/BFRP grid-reinforced ECC(BFGCC)/bending behavior/bending stiffness分类
建筑与水利引用本文复制引用
李杉,安俊澎,卢亦焱,郑傲寒..BFGCC加固锈蚀RC梁抗弯刚度试验研究[J].大连理工大学学报,2025,65(4):407-414,8.基金项目
国家自然科学基金资助项目(52078391). （52078391）
