湖南大学学报（自然科学版）2024，Vol.51Issue(3)：149-160,12.DOI:10.16339/j.cnki.hdxbzkb.2024037
纤维织物-高延性混凝土加固钢筋混凝土板抗弯性能试验研究
Experimental Study on Flexural Behaviors of Reinforced Concrete Slabs Strengthened with Textile-reinforced Highly Ductile Concrete
摘要
Abstract
To investigate the flexural behaviors of RC slabs strengthened with textile-reinforced highly ductile concrete(TR-HDC),the four-point bending test was carried out on one reference slab,one slab strengthened with highly ductile concrete(HDC),one slab strengthened with textile reinforced mortar(TRM)and three slabs strengthened with TR-HDC.The effects of adding with or without PVA fibers and the mumber of layers of textile on the failure modes,load-deflection curves,flexural capacity,ductility factor,and strain analysis were studied.The test results showed that for the RC slabs strengthened with textile-reinforced highly ductile concrete,the cracking width and space of strengthened slabs were reduced apparently,which showed the characteristic of thin and dense.The flexural capacity of RC slabs strengthened with TR-HDC was greatly improved.The maximum increases in the cracking,yield and peak loads were 104%,89%and 127%,respectively.The rupture of the textile in the TR-HDC strengthening layer reduced the ductility of the slabs.Therefore,the textile rupture should be avoided as much as possible in the practical project.Based on the plane section assumption,the formulas for calculating the flexural capacity and deflection of RC slabs strengthened with TR-HDC were proposed.The calculated results were in good agreement with the test results.It can provide the theoretical basis for practical application.关键词
混凝土板/抗弯测试/加固/纤维织物/高延性混凝土Key words
concrete slabs/bending tests/strengthening/textiles/highly ductile concrete分类
建筑与水利引用本文复制引用
宋诗飞,邓明科,李培鹏,张敏..纤维织物-高延性混凝土加固钢筋混凝土板抗弯性能试验研究[J].湖南大学学报（自然科学版）,2024,51(3):149-160,12.基金项目
国家自然科学基金资助项目(51878545),National Natural Science Foundation of China(51878545) （51878545）
