CFRP加固钢筋混凝土柱复合受扭性能试验研究及损伤分析

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发布时间：2020-01-06 00:00:00

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CFRP加固钢筋混凝土柱复合受扭性能试验研究及损伤分析

Experimental Study and Damage Analysis of CFRP-Reinforced Concrete Columns Under Combined Torsion

2023年第5期

CFRP加固；钢筋混凝土柱；复合受扭；扭矩-扭率（T-θ）曲线；延性；损伤演变

CFRP reinforcement; Reinforced concrete column; Composite torsion; T-θ curve; Ductility; Damage evolution

2023年第5期

10.19761/j.1000-4637.2023.05.045.05

2021年江苏省研究生实践创新计划项目（SJCX21_1421）。

朱印辛，邵永健，谢强

苏州科技大学土木工程学院，江苏苏州 215011

朱印辛，邵永健，谢强

朱印辛,邵永健,谢强.CFRP加固钢筋混凝土柱复合受扭性能试验研究及损伤分析[J].混凝土与水泥制品,2023(5):45-49.

ZHU Y X,SHAO Y J,XIE Q.Experimental Study and Damage Analysis of CFRP-Reinforced Concrete Columns Under Combined Torsion[J].China Concrete and Cement Product,2023(5):45-49.

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摘要：为研究CFRP加固钢筋混凝土柱的复合受扭性能，设计了4个CFRP加固钢筋混凝土柱（CCZ柱）试件，开展了压弯剪复合受力状态下的单调受扭试验，研究了配筋率和CFRP加固方式对试件破坏形态、延性系数、扭矩-扭率（T-θ）曲线的影响，并进行了损伤演变分析。结果表明：当CFRP发生断裂后，试件将发生破坏；环贴+纵贴CFRP加固试件的受扭性能和延性较好，且配筋率对试件的受扭性能和延性影响较小；纵筋配筋率会影响试件的损伤形态，纵筋配筋率越大，试件损伤程度越小。 Abstract: In order to study the composite torsional performance of CFRP reinforced concrete columns, four CFRP reinforced concrete columns (CCZ columns) were designed with reinforcement ratio and CFRP reinforcement method as parameters. The monotone torsional tests were carried out under the combined stress state of flexural, shear and torsion. The failure forms, ductility coefficient and torque-torsion curve characteristics were studied, and the damage evolution was analyzed. The results show that the CCZ column is damaged after the carbon fiber cloth around it breaks. The torsional properties and ductility of the specimens reinforced with circumferential and longitudinal CFRP are improved, and the reinforcement ratio has little effect on the torsional properties and ductility. The ratio of longitudinal reinforcement has a great influence on the damage of specimen. The larger the ratio of longitudinal reinforcement, the smaller the damage degree of composite torsion of specimen.

英文名 : Experimental Study and Damage Analysis of CFRP-Reinforced Concrete Columns Under Combined Torsion

刊期 : 2023年第5期

关键词 : CFRP加固；钢筋混凝土柱；复合受扭；扭矩-扭率（T-θ）曲线；延性；损伤演变

Key words : CFRP reinforcement; Reinforced concrete column; Composite torsion; T-θ curve; Ductility; Damage evolution

刊期 : 2023年第5期

DOI : 10.19761/j.1000-4637.2023.05.045.05

文章编号 :

基金项目 : 2021年江苏省研究生实践创新计划项目（SJCX21_1421）。

作者 : 朱印辛，邵永健，谢强

单位 : 苏州科技大学土木工程学院，江苏苏州 215011

朱印辛，邵永健，谢强

朱印辛,邵永健,谢强.CFRP加固钢筋混凝土柱复合受扭性能试验研究及损伤分析[J].混凝土与水泥制品,2023(5):45-49.

ZHU Y X,SHAO Y J,XIE Q.Experimental Study and Damage Analysis of CFRP-Reinforced Concrete Columns Under Combined Torsion[J].China Concrete and Cement Product,2023(5):45-49.

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引用本文

Abstract: In order to study the composite torsional performance of CFRP reinforced concrete columns, four CFRP reinforced concrete columns (CCZ columns) were designed with reinforcement ratio and CFRP reinforcement method as parameters. The monotone torsional tests were carried out under the combined stress state of flexural, shear and torsion. The failure forms, ductility coefficient and torque-torsion curve characteristics were studied, and the damage evolution was analyzed. The results show that the CCZ column is damaged after the carbon fiber cloth around it breaks. The torsional properties and ductility of the specimens reinforced with circumferential and longitudinal CFRP are improved, and the reinforcement ratio has little effect on the torsional properties and ductility. The ratio of longitudinal reinforcement has a great influence on the damage of specimen. The larger the ratio of longitudinal reinforcement, the smaller the damage degree of composite torsion of specimen.

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CFRP加固钢筋混凝土柱复合受扭性能试验研究及损伤分析

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