[1]王文炜,叶见曙,赵国藩.玻璃纤维布加固的钢筋混凝土梁端部锚固试验研究[J].东南大学学报(自然科学版),2004,34(5):656-660.[doi:10.3969/j.issn.1001-0505.2004.05.021]
 Wang Wenwei,Ye Jianshu,Zhao Guofan.Experimental study on anchorage schemes of RC beams strengthened with GFRP sheets[J].Journal of Southeast University (Natural Science Edition),2004,34(5):656-660.[doi:10.3969/j.issn.1001-0505.2004.05.021]
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玻璃纤维布加固的钢筋混凝土梁端部锚固试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第5期
页码:
656-660
栏目:
土木工程
出版日期:
2004-09-20

文章信息/Info

Title:
Experimental study on anchorage schemes of RC beams strengthened with GFRP sheets
作者:
王文炜1 叶见曙1 赵国藩2
1 东南大学交通学院, 南京 210096; 2 大连理工大学土木工程系, 大连 116024
Author(s):
Wang Wenwei1 Ye Jianshu1 Zhao Guofan2
1 College of Transportation, Southeast University, Nanjing 210096, China
2 Department of Civil Engineering, Dalian University of Technology, Dalian 116024, China
关键词:
玻璃纤维布 加固 钢筋混凝土梁 梁端锚固 试验研究
Keywords:
GFRP strengthening RC beams anchorage schemes experimental study
分类号:
TU337.9
DOI:
10.3969/j.issn.1001-0505.2004.05.021
摘要:
进行了6根玻璃纤维布(GFRP)加固的钢筋混凝土梁梁端锚固试验和3根对比梁的试验研究.试验中变化的参数为混凝土强度等级、配筋率、加固量、剪跨比.针对不同的加固层数采用了端部U型箍、剪跨区内U型箍、剪跨区内U型全包3种梁端锚固形式.分析了梁端锚固形式对玻璃纤维布加固的钢筋混凝土梁破坏形态及极限荷载的影响.试验结果表明,经玻璃纤维布加固的钢筋混凝土梁抗弯承载力提高较多,加固效果明显,梁端有无锚固条对加固梁的极限荷载及破坏形态有显著影响.对于剪跨比小的加固梁,梁端锚固条不仅可以防止发生剥离破坏,而且还改善了梁的延性.
Abstract:
Six reinforced concrete(RC)beams strengthened with GFRP(glass fiber reinforced polymer)sheets and three control beams were tested to evaluate the validity of anchorage system at the end of GFRP sheets. Four parameters are considered in this experimental program: the concrete strength, the tension steel ratio, the number of GFRP sheets, and the shear span ratio. Different anchorage schemes are conducted according to the number of GFRP sheets. The effect of anchorage schemes on the failure modes and ultimate load capacity of the RC beams strengthened with GFRP sheets are discussed. The results indicate that the flexural strength of the repaired beams is increased and the effect of anchorage schemes on the ultimate load capacity of the RC beams strengthened with GFRP sheets is obvious. Anchorage schemes can not only prevent the GFRP sheets from debonding but also improve the ductile behavior of strengthened beams with low shear span ratio.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 王文炜(1971—),男,博士,讲师,wang_wenwei@sina.com.
更新日期/Last Update: 2004-09-20