Intermediate crack-induced debonding in RC beams externally strengthened with prestressed FRP laminates
Intermediate crack-induced debonding in RC beams externally strengthened with prestressed FRP laminates
复制标题
预应力 FRP 层压板外部加固 RC 梁的中间裂纹诱发脱粘
DOI：
10.1177/0731684413492574
复制
发表时间：
2013-06
影响因子：
3.1
通讯作者：
Harries, Kent A.
中科院分区：
文献类型：
--
作者：
Wang, Wen-Wei;Dai, Jian-Guo;Harries, Kent A.
中间裂缝引起的剥离是纤维增强聚合物（FRP）加固钢筋混凝土（RC）梁受弯时的主要破坏模式。无应力FRP加固钢筋混凝土梁已得到广泛的研究。然而，对于预应力FRP加固钢筋混凝土梁的FRP脱粘问题，国内外的研究却很少。本文提出了一种考虑不同破坏模式的预应力FRP加固钢筋混凝土梁正截面承载力计算模型。重点放在中间裂纹引起的剥离或剥离FRP断裂的极限状态下预应力FRP中的有效应变。通过对51根后张法FRP加固钢筋混凝土梁的反算分析，建立了基于截面分析的预应力FRP有效应变极限承载力预测模型，并与试验结果进行了对比验证。
Intermediate crack-induced debonding is often a dominant failure mode in fiber-reinforced polymer (FRP)-strengthened reinforced concrete (RC) beams in flexure. It has been extensively studied for RC beams externally strengthened with unstressed FRP laminates. However, very little work has been done on FRP debonding for RC beams strengthened with prestressed FRP. This article presents a sectional analysis model for predicting the flexural capacity of RC beams strengthened with prestressed FRP laminates with due consideration of different failure modes. The focus is placed on the effective strain in the prestressed FRP at the ultimate states of intermediate crack-induced debonding or rupture of debonded FRP. Through back-calculation analysis of 51 RC beams strengthened with post-tensioned FRP laminates, a model for predicting the effective strain of prestressed FRP for ultimate strength prediction based upon sectional analyses was developed and validated through comparisons with test results.
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影响因子：
13.1
作者：
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通讯作者：
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影响因子：
4.6
作者：
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影响因子：
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影响因子：
6.3
作者：
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通讯作者：
Neale, Kenneth W.
DOI：
10.1201/9781439832448
发表时间：
2008-08
期刊：
--
影响因子：
--
作者：
L. Hollaway;J. Teng
通讯作者：
L. Hollaway;J. Teng