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Experimental study on seismic performance of strengthening masonry wall using hybrid fiber-reinforced reactive powder concrete
Earthquake Spectra ( IF 5 ) Pub Date : 2021-03-07 , DOI: 10.1177/8755293020988012
Xin Wang 1, 2 , Qun Xie 3 , Zhenli Wu 4 , Fanyang Bu 5 , Fei Wang 6
Affiliation  

An experimental study was conducted to investigate the seismic performance of masonry walls strengthened using hybrid fiber-reinforced reactive powder concrete (HyFRRPC) as a coating. The proposed reinforcement technique was employed to improve the overall strength and structural integrity of the confined masonry wall. In order to guarantee the composite action between the masonry substrate and the coating material, material tests were conducted to achieve an optimal mixture for the HyFRRPC. Then, six full-scaled confined masonry specimens strengthened by HyFRRPCs with varied strengthening configurations were tested under in-plane quasi-static horizontal loading. The test and analysis results indicated that the proposed HyFRRPC-strengthening technique can effectively improve the lateral carrying capacity, displacement ductility, and energy dissipation capacity of masonry walls, and provide an optimal reinforcement. Finally, a simplified analytical model was also proposed for practical application.



中文翻译:

混杂纤维增强活性粉末混凝土加固砌体墙抗震性能的试验研究

进行了一项实验研究,以研究使用混合纤维增强活性粉末混凝土(HyFRRPC)作为涂层加固的砌体墙的抗震性能。所提出的加固技术被用来改善承重砌体墙的整体强度和结构完整性。为了保证砖石基材和涂料之间的复合作用,进行了材料测试,以获得HyFRRPC的最佳混合物。然后,在平面准静态水平荷载下,测试了六种由HyFRRPC加固并具有不同加固构造的全尺寸密闭砌体标本。测试和分析结果表明,所提出的HyFRRPC强化技术可以有效提高侧向承载能力,位移延性,和砌体墙的消能能力,并提供最佳的加固效果。最后,还提出了一种简化的分析模型以供实际应用。

更新日期:2021-03-08
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