纤维增强塑料
结构工程
材料科学
平方(代数)
复合材料
章节(排版)
压缩(物理)
胶凝的
压力(语言学)
钢筋混凝土
工程类
计算机科学
数学
水泥
几何学
语言学
哲学
操作系统
作者
Jun‐Jie Zeng,Qi-Jin Liang,Weiquan Cai,JinJing Liao,Jie‐Kai Zhou,Jiong-Yi Zhu,Lihai Zhang
标识
DOI:10.1016/j.engstruct.2023.115666
摘要
In this paper, a novel column strengthening technique incorporating section curvilinearization (SC) using ultra-high performance engineered cementitious composites (UHP-ECC) and fiber-reinforced polymer (FRP) confinement is proposed and validated. Eleven large-scaled FRP-confined square reinforced concrete (RC) columns with SC using UHP-ECC as the additive material were prepared and tested. The main parameters investigated in this paper included the FRP thickness, the rise-to-span ratio, and the strength of the additive concrete. Test results show that the SC technique with FRP jacketing and UHP-ECC as the additive material enhances the load-bearing capacity of the RC columns by 52% with a 17% section increment. By assessing the existing design-oriented stress–strain models of confined concrete in curvilinearized square columns (CSCs) using the test results obtained in this study, it reveals that the current models could underestimate the ultimate strength of the confined concrete in CSCs with a two-layer FRP wrap, and therefore further research on the improvement on the stress–strain model of confined concrete in CSCs becomes necessary.
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