Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC
Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC
复制标题
复合加固层加固钢筋混凝土梁的弯曲性能：BFRP 网格和 ECC
DOI：
10.1016/j.conbuildmat.2016.04.038
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发表时间：
2016-07
影响因子：
7.4
通讯作者：
John C. Brigham
中科院分区：
文献类型：
--
作者：
Yu-Zhou Zheng;Wen-Wei Wang;John C. Brigham
提出了一种玄武岩纤维增强聚合物（BFRP）格栅与工程水泥基复合材料（ECC）作为复合加固层（CRL）加固钢筋混凝土梁的新技术。对5根在梁底粘贴CRL的RC梁和1根对照RC梁进行了抗弯性能试验。试验方案中选取BFRP格栅厚度（1 mm、3 mm和5 mm）和CRL粘结长度（400 mm、450 mm和500 mm）作为两个主要参数，CRL宽度和厚度分别固定为200 mm和30 mm左右。试验结果表明，加固后的梁没有明显的CRL剥离现象。最终的两种失效模式是混凝土压碎或BFRP格栅的断裂，表明所提出的技术在抑制外部粘结材料的剥离和充分利用材料强度方面是有效的。通过与试验结果的对比，验证了理论模型的正确性。
In this paper, a new strengthening technique for reinforced concrete (RC) beams is proposed by combining Basalt fiber Reinforced Polymer (BFRP) grid and Engineered Cementitious Composites (ECC) as a composite reinforcement layer (CRL). Five RC beams externally bonded with the CRL at the soffit and one control RC beam were tested to investigate their flexural behaviour. The thickness of BFRP grids (i.e. 1 mm, 3 mm and 5 mm) and the bonded length of CRL (i.e. 400 mm, 450 mm and 500 mm) were selected as two main parameters in the test program, while the width and thickness of CRL were fixed approximately at 200 mm and 30 mm, respectively. The test results showed that there is no clear CRL debonding in the strengthened beams. The two final failure modes were concrete crushing or rupture of the BFRP grids, indicating that the proposed technique is effective in suppressing the debonding of externally bonded materials and fully utilizing the material strengths. An analytical model is also presented to predict the load-deflection responses of the strengthened beams, which was validated through comparisons with the test results.
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DOI：
--
发表时间：
2011
期刊：
Journal of Building Materials
影响因子：
--
作者：
Wei Lin;Wei Sun;Zongjin Li
通讯作者：
Wei Lin;Wei Sun;Zongjin Li
预应力 FRP 层压板外部加固 RC 梁的中间裂纹诱发脱粘
影响因子：
3.1
作者：
Wang, Wen-Wei;Dai, Jian-Guo;Harries, Kent A.
通讯作者：
Harries, Kent A.
模拟车辆荷载下外粘 FRP 系统加固 RC 梁的性能评估
影响因子：
3.6
作者：
Wang, Wen-Wei;Dai, Jian-Guo;Harries, Kent A.
通讯作者：
Harries, Kent A.
影响因子：
6.3
作者：
J. Gamage;R. Al-Mahaidi;M. Wong
通讯作者：
J. Gamage;R. Al-Mahaidi;M. Wong
DOI：
10.1680/stbu.2009.162.5.335
发表时间：
2009-10
期刊：
--
影响因子：
--
作者：
J. Teng;Jian fei Chen
通讯作者：
J. Teng;Jian fei Chen