土木与环境工程学报（中英文）2026，Vol.48Issue(1)：164-173,10.DOI:10.11835/j.issn.2096-6717.2023.141
纤维编织网复合嵌入式预应力碳纤维筋加固RC梁的抗弯性能
Flexural performance of RC beams reinforced with textile reinforced concrete composite embedded prestressed CFRP bars
摘要
Abstract
The present study investigates the flexural performance of reinforced concrete beams reinforced with TRC composite embedded prestressed CFRP bars.To this end,a four-point flexural load test was carried out on one ordinary reinforced concrete beam and five beams reinfored with TRC composite embedded prestressed CFRP bars.The effects of slot size and diameter of CFRP bars on the flexural performance of the composite reinforced beams,including bearing capacity,failure mode and crack distribution,were analyzed.The test results show that the load increase of the composite reinforced beam is more obvious in each stage than that of the unreinforced beam.The ultimate load of the reinforced beam increases slightly with an increase of slot size and greatly with the increase of CFRP bar diameter.The flexural stiffness of the composite reinforced beam is obviously higher than that of the unreinforced beam.The increase of slot size and diameter of CFRP bars is not proportional to the increase of beam stiffness.The number of cracks in composite reinforced beams is obviously more than that of ordinary reinforced concrete beams,and the cracks show a fine and dense distribution characteristic,and it increases with the increase of slot size,but the diameter of CFRP bars has little effect.The ductility of the unreinforced beam is obviously higher than that of the reinforced beam on it.The ductility of the composite reinforced beam decreases with the increase of the diameter of the CFRP bar,and the increase of the slot size has no obvious effect on the ductility of the beam.Based on the calculation model of the cracking load of a single reinforced concrete beam proposed in the literature,a formula for calculating the cracking load of a composite reinforced concrete beam is proposed.The discrepancy between the calculated value and the test value is less than 6.5%,which indicates that the formula has adequate applicability.关键词
钢筋混凝土梁/抗弯性能/纤维编织网增强混凝土/碳纤维增强聚合物筋/复合加固Key words
reinforced concrete beam/flexural performance/textile reinforced concrete/CFRP bar/composite reinforcement分类
建筑与水利引用本文复制引用
罗资清,骆俊晖,宁杰钧,尹世平,刘子瑞..纤维编织网复合嵌入式预应力碳纤维筋加固RC梁的抗弯性能[J].土木与环境工程学报（中英文）,2026,48(1):164-173,10.基金项目
2021年度广西交通运输行业重点科技项目 （）
广西科技基地和人才专项(桂科AD23026026) 2021 Guangxi Transportation Industry Key Science and Technology Project （桂科AD23026026）
Guangxi Science and Technology Base and Talent Project(Guike AD23026026) （Guike AD23026026）
