Shear strengthening of un-reinforced concrete masonry walls with fabric-reinforced-cementitious-matrix
Shear strengthening of un-reinforced concrete masonry walls with fabric-reinforced-cementitious-matrix
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DOI：
10.1016/j.conbuildmat.2014.04.116
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发表时间：
2014-08-29
影响因子：
7.4
通讯作者：
Nanni, Antonio
中科院分区：
文献类型：
--
作者：
Babaeidarabad, Saman;Arboleda, Diana;Nanni, Antonio
本文研究了织物增强胶凝基质（FRCM）体系外加固的非钢筋混凝土砌体墙的面内性能。试验方案包括测试9个两侧用两种不同的frp加固方案（一种和四种加固织物）加固的非钢筋混凝土砌体墙。采用ACI 549-13的解析模型对加固后墙体的抗剪承载力进行了预测。本文还讨论了ACI 549-13提出的方法中设计限制的影响。最后，从其他研究项目中使用纤维增强聚合物（FRP）复合材料的实验数据表明，当归一化抗剪能力与校准配筋率相关时，两种覆盖层加固技术匹配良好。(C) 2014 Elsevier Ltd.版权所有。
In this paper, the in-plane behavior of un-reinforced concrete masonry walls externally strengthened with a fabric-reinforced cementitious matrix (FRCM) system is investigated. The experimental program consists of testing nine un-reinforced concrete masonry walls strengthened on both sides with two different FRCM schemes (one and four reinforcement fabrics). The analytical model as per ACI 549-13 is used to predict the shear capacity of the strengthened walls. The effects of design limitations in the approach proposed by ACI 549-13 are also discussed. Finally, experimental data from other research programs using fiber-reinforced polymer (FRP) composites are presented to demonstrate that when normalized shear capacity is related to a calibrated reinforcement ratio, the two overlay strengthening technologies match well. (C) 2014 Elsevier Ltd. All rights reserved.