复合材料科学与工程Issue(3)：1-9,9.DOI:10.19936/j.cnki.2096-8000.20260328.001
PVC-CFRP管钢筋混凝土梁弯矩-曲率关系分析
Analysis of moment-curvature relations on PVC-CFRP tube confined reinforced concrete beams
摘要
Abstract
In this study,20 PVC-CFRP reinforced concrete beams are subjected to stress tests.The effects of specimen size,hoop reinforcement ratio,width and number of layers of CFRP strips,bonding method of CFRP strips,layers of CFRP sheets and shear span ratio on the damage mode and moment-curvature relationship curves of the specimens were analysed.The results indicate that,the failure of the specimen was governed by the yielding of the stirrups and bottom longitudinal reinforcement,and the CFRP strips were subsequently ruptured in tension.In the elastic stage,with the improvement of reinforcement ratio,CFRP strip width and number of layers,and longitu-dinal CFRP sheet layer,the slope of the ultimate bearing capacity and moment-curvature relationship curves of the specimens increased,and the curvature development of the specimens slowed down obviously.As the shear-to-span ratio increases,the ultimate bearing capacity of the specimens decreases and the change of the moment-curvature curve is not obvious.In addition,under the same fiber ratio condition,the effect of CFRP strip bonding method on the specimens’bearing capacity and bending moment-curvature curves is not significant.Furthermore,on the basis of the tests,considering the influence of various factors on the moment-curvature relationship of the specimens,the adjustment factor of the bending stiffness of the specimens is introduced,and the calculation model of the moment-curvature relationship of the specimens is established.关键词
PVC-CFRP管混凝土/梁/破坏形态/承载力/弯矩-曲率关系Key words
PVC-CFRP confined concrete/beam/failure mode/bearing capacity/moment-curvature rela-tionship分类
通用工业技术引用本文复制引用
徐国士,樊宇杰,高擎,于峰,姚晓光..PVC-CFRP管钢筋混凝土梁弯矩-曲率关系分析[J].复合材料科学与工程,2026,(3):1-9,9.基金项目
国家自然科学基金项目(52078001) （52078001）
安徽省重大科技专项项目(202203a07020005) （202203a07020005）
安徽省高校优秀科研创新团队计划项目(2023ah010017) （2023ah010017）
安徽省高校协同创新计划(GXXT-2022-074) （GXXT-2022-074）
马鞍山市科技计划项目(2022KN-18) （2022KN-18）
安徽省住房城乡建设科学技术计划(2022-YF114) （2022-YF114）
