交变荷载作用下CFRP布加固RC梁耐久性能试验研究

头部文案

发布时间：2020-01-06 00:00:00

全国建材科技期刊
全国中文核心期刊
中国科技论文统计源期刊
万方数据-数字化期刊群入网期刊
中国学术期刊（光盘版）全文收录期刊

华东地区优秀科技期刊
江苏省期刊方阵“双效期刊”
中国期刊网全文收录期刊
中国科技期刊数据库全文收录期刊



交变荷载作用下CFRP布加固RC梁耐久性能试验研究

Experimental Study on Durability of RC Beams Strengthened with CFRP Sheets Under Alternating Loads

2021年第10期

碳纤维增强复合材料；钢筋混凝土梁；交变荷载；破坏形式；极限应变；抗裂性能

CFRP; RC beam; Alternating load; Failure mode; Ultimate strain; Crack resistance

2021年第10期

10.19761/j.1000-4637.2021.10.057.05

国家自然科学基金项目（11702033）；中央高校基本科研业务费专项资金项目（300102129110）。

王吉文1，杜晓明2，袁振圣3

1.中国市政工程中南设计研究总院有限公司，湖北武汉 430010；2.中建五局第三建设有限公司，湖南长沙 410004；3.长安大学理学院，陕西西安 710064

王吉文1，杜晓明2，袁振圣3

王吉文,杜晓明,袁振圣.交变荷载作用下CFRP布加固RC梁耐久性能试验研究[J].混凝土与水泥制品,2021(10):57-61.

WANG J W,DU X M,YUAN Z S.Experimental Study on Durability of RC Beams Strengthened with CFRP Sheets Under Alternating Loads[J].China Concrete and Cement Products,2021(10):57-61.

浏览量:

1000

摘要：为了探究CFRP布加固钢筋混凝土梁（RC梁）在交变荷载作用下的耐久性，对8根CFRP布加固RC梁进行了恒载和交变荷载作用下的15 d、30 d老化试验，并通过三点弯曲试验得到了试验梁在不同荷载作用下的破坏模式、极限荷载、极限应变、弯曲性能、裂缝数量以及裂缝宽度。结果表明：经交变荷载作用15 d、30 d后，CFRP布加固RC梁的力学性能下降显著，试验梁的极限荷载、剥离荷载与极限应变均呈下降趋势；与相同龄期下的恒载（24 kN）相比，交变荷载作用15 d、30 d后，试验梁的极限应变平均降低了11.44%、15.23%；交变载荷作用下CFRP布加固RC梁的抗裂性能与弯曲性能减弱程度比恒载作用更显著。 Abstract: In order to explore the durability of reinforced concrete(RC) beams strengthened with CFRP sheets under alternating loads, eight CFRP cloth-reinforced RC beams were subjected to 15 d and 30 d aging tests under dead and alternating loads, and the failure mode, ultimate strain, bending properties, crack number and crack width of test beams under different loads were obtained through the three-point bending tests. The results show that after 15 d and 30 d of alternating loads, the mechanical properties of RC beams strengthened with CFRP sheets decrease significantly, and the ultimate load, peeling failure load and ultimate strain of the test beams decrease. Compared with the dead load(24 kN) under the same age, the ultimate strain of the test beam is reduced by 11.44% and 15.23% on average after the alternating loads is applied for 15 d and 30 d. The crack resistance and bending properties of the test beams under alternating loads is weaker than that under dead loads.

英文名 : Experimental Study on Durability of RC Beams Strengthened with CFRP Sheets Under Alternating Loads

刊期 : 2021年第10期

关键词 : 碳纤维增强复合材料；钢筋混凝土梁；交变荷载；破坏形式；极限应变；抗裂性能

Key words : CFRP; RC beam; Alternating load; Failure mode; Ultimate strain; Crack resistance

刊期 : 2021年第10期

DOI : 10.19761/j.1000-4637.2021.10.057.05

文章编号 :

基金项目 : 国家自然科学基金项目（11702033）；中央高校基本科研业务费专项资金项目（300102129110）。

作者 : 王吉文1，杜晓明2，袁振圣3

单位 : 1.中国市政工程中南设计研究总院有限公司，湖北武汉 430010；2.中建五局第三建设有限公司，湖南长沙 410004；3.长安大学理学院，陕西西安 710064

王吉文1，杜晓明2，袁振圣3

王吉文,杜晓明,袁振圣.交变荷载作用下CFRP布加固RC梁耐久性能试验研究[J].混凝土与水泥制品,2021(10):57-61.

WANG J W,DU X M,YUAN Z S.Experimental Study on Durability of RC Beams Strengthened with CFRP Sheets Under Alternating Loads[J].China Concrete and Cement Products,2021(10):57-61.





摘要

参数

结论

参考文献

引用本文

Abstract: In order to explore the durability of reinforced concrete(RC) beams strengthened with CFRP sheets under alternating loads, eight CFRP cloth-reinforced RC beams were subjected to 15 d and 30 d aging tests under dead and alternating loads, and the failure mode, ultimate strain, bending properties, crack number and crack width of test beams under different loads were obtained through the three-point bending tests. The results show that after 15 d and 30 d of alternating loads, the mechanical properties of RC beams strengthened with CFRP sheets decrease significantly, and the ultimate load, peeling failure load and ultimate strain of the test beams decrease. Compared with the dead load(24 kN) under the same age, the ultimate strain of the test beam is reduced by 11.44% and 15.23% on average after the alternating loads is applied for 15 d and 30 d. The crack resistance and bending properties of the test beams under alternating loads is weaker than that under dead loads.

扫二维码用手机看

上一个

超轻泡沫混凝土结构断层成因及抑制措施研究

下一个

BFRP增强水泥砂浆薄板力学性能试验研究

头部文案

交变荷载作用下CFRP布加固RC梁耐久性能试验研究

相关文件