外贴纤维布加固钢筋混凝土梁锚固长度的确定

敬登虎; 曹双寅

doi:10.13204/j.gyjz200412025

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外贴纤维布加固钢筋混凝土梁锚固长度的确定

doi: 10.13204/j.gyjz200412025

1.
东南大学,南京,210096

详细信息

作者简介:
敬登虎,男,1978年2月出生,博士研究生

中图分类号: TU746
计量
- 文章访问数: 88
- HTML全文浏览量: 8
- PDF下载量: 104
- 被引次数: 0
出版历程
- 收稿日期: 2003-09-20
- 刊出日期: 2004-12-20

DEFINITION OF ANCHORAGE LENGTH OF RC BEAMS STRENGTHENED WITH FIBER SHEETS

1.
Southeast University Nanjing 210096

摘要

摘要: 采用拱体桁架模型,对通过外贴纤维布加固钢筋混凝土梁的端部锚固问题进行了理论分析。分析中考虑了斜裂缝对加固效果的影响,建立了拱体桁架简化计算模型。分析了加固部位的确定、纤维布的理论断点,通过理论分析,得到所需的纤维布端部粘结力H,从而确定锚固长度lf。
- 拱体桁架 /
- 纤维布 /
- 混凝土梁 /
- 锚固长度
Abstract: A theoretical analysis of end anchorage of RC beams strengthened with fiber shee ts is carried out using a model of arch truss, in which the effect of inclined cracks on the strengthening effectiveness is taken into account, and a simplifie d calculation model of the arch truss is also established.The analysis of determ ining strengthening position and the theoretical breaking point of fiber sheets is also conducted. The necessary bonding force at the end of fiber sheets, H is obtained through the theoretical analysis, thus defining the anchorage length l f.
- arch truss /
- fiber sheets /
- concrete beam /
- anchorage length

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参考文献(5)

[2] 王滋军,刘伟庆,等.碳纤维布加固钢筋混凝土梁锚固方式试验研究.工业建筑,2003,33(2):16～18

欧阳煜,钱在兹.粘贴片材加固混凝土梁的粘结剪应力分析.工程力学,2000(6):92～96

[3] Guidelines for the Selection,Design and Installation of Fiber Reinforced Polymer(FRP) Systems for Externally Strengthening Concrete Structures.Reported by ACI,Committee 440,1999

[4] Bonacci J F,Maalej M.Behavioral Trends of RC Beams Strengthened with Externally Bonded FRP.Journal of Composites for Construction,ASCE,2001(2):102～113

[5] 杨勇新,岳清端,等.碳纤维布与混凝土的粘结强度指标.工业建筑,2003,33(2):5～8

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