应变硬化水泥基复合材料增强钢筋混凝土构件受弯性能试验研究

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发布时间：2020-01-06 00:00:00

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应变硬化水泥基复合材料增强钢筋混凝土构件受弯性能试验研究

Experimental study on bending performance of strain hardening cementitious composite material strengthening reinforced concrete components

2024年第11期

应变硬化水泥基复合材料；钢筋混凝土构件；受弯性能；破坏形态；承载能力

Strain hardening cementitious composite material; Reinforced concrete component; Bending performance; Failure mode; Bearing capacity

2024年第11期

10.19761/j.1000-4637.2024.11.065.05

江苏省自然科学基金资助项目（BK20211281）；广东电网有限责任公司基建技术创新专题项目。

侯昌明1，张朔1，陈晓1，杨智峰1，张永兴2，*

1.广东电网有限责任公司佛山供电局，广东佛山 528010；2.南京林业大学土木工程学院，江苏南京 210037

侯昌明1，张朔1，陈晓1，杨智峰1，张永兴2，*

侯昌明,张朔,陈晓,等.应变硬化水泥基复合材料增强钢筋混凝土构件受弯性能试验研究[J].混凝土与水泥制品,2024(11):65-69.

HOU C M,ZHANG S,CHEN X,et al.Experimental study on bending performance of strain hardening cementitious composite material strengthening reinforced concrete components[J].China Concrete and Cement Products,2024(11):65-69.

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摘要：设计了1组钢筋混凝土梁构件（RC）和3组应变硬化水泥基复合材料增强钢筋混凝土梁构件（U-10、U-30、U-50），研究了应变硬化水泥基复合材料层厚度（0、10、30、50 mm）对构件受弯性能的影响。结果表明：与RC构件相比，U-10、U-30和U-50构件的承载能力分别提高了16.5%、34.8%和61.0%；在加载过程中，纵向钢筋先屈服，然后应变硬化水泥基复合材料增强层开始承担荷载，且增强层表面出现众多细小裂缝，此后，部分细小裂缝局部化，增强层韧性逐渐丧失，承载能力下降，并最终保持与钢筋混凝土基梁一致。 Abstract: One set of reinforced concrete beam components(RC) and three sets of strain hardened cementitious composite material strengthening reinforced concrete beam components(U-10, U-30, U-50) were designed, and the effects of strain hardened cementitious composite material layer thickness(0, 10, 30, 50 mm) on the bending performance of components were investigated. The results show that compared with RC components, the bearing capacity of U-10, U-30, and U-50 components are increased by 16.5%, 34.8%, and 61.0%, respectively. During the loading process, the longitudinal steel bars yield first, and then the strain hardened cementitious composite reinforcement layer begins to bear the load, and numerous small cracks appear on the surface of the reinforcement layer. Afterwards, some of the small cracks localize, and the toughness of the reinforcement layer gradually decreases, resulting in a decrease in bearing capacity and ultimately maintaining consistency with the reinforced concrete foundation beam.

英文名 : Experimental study on bending performance of strain hardening cementitious composite material strengthening reinforced concrete components

刊期 : 2024年第11期

关键词 : 应变硬化水泥基复合材料；钢筋混凝土构件；受弯性能；破坏形态；承载能力

Key words : Strain hardening cementitious composite material; Reinforced concrete component; Bending performance; Failure mode; Bearing capacity

刊期 : 2024年第11期

DOI : 10.19761/j.1000-4637.2024.11.065.05

文章编号 :

基金项目 : 江苏省自然科学基金资助项目（BK20211281）；广东电网有限责任公司基建技术创新专题项目。

作者 : 侯昌明1，张朔1，陈晓1，杨智峰1，张永兴2，*

单位 : 1.广东电网有限责任公司佛山供电局，广东佛山 528010；2.南京林业大学土木工程学院，江苏南京 210037

侯昌明1，张朔1，陈晓1，杨智峰1，张永兴2，*

侯昌明,张朔,陈晓,等.应变硬化水泥基复合材料增强钢筋混凝土构件受弯性能试验研究[J].混凝土与水泥制品,2024(11):65-69.

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摘要

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结论

参考文献

引用本文

Abstract: One set of reinforced concrete beam components(RC) and three sets of strain hardened cementitious composite material strengthening reinforced concrete beam components(U-10, U-30, U-50) were designed, and the effects of strain hardened cementitious composite material layer thickness(0, 10, 30, 50 mm) on the bending performance of components were investigated. The results show that compared with RC components, the bearing capacity of U-10, U-30, and U-50 components are increased by 16.5%, 34.8%, and 61.0%, respectively. During the loading process, the longitudinal steel bars yield first, and then the strain hardened cementitious composite reinforcement layer begins to bear the load, and numerous small cracks appear on the surface of the reinforcement layer. Afterwards, some of the small cracks localize, and the toughness of the reinforcement layer gradually decreases, resulting in a decrease in bearing capacity and ultimately maintaining consistency with the reinforced concrete foundation beam.

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应变硬化水泥基复合材料增强钢筋混凝土构件受弯性能试验研究

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