Glass Fiber-Reinforced Polymer-Reinforced Circular Columns under Simulated Seismic Loads
Glass Fiber-Reinforced Polymer-Reinforced Circular Columns under Simulated Seismic Loads
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DOI：
10.14359/51687227
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发表时间：
2015-01-01
影响因子：
1.8
通讯作者：
Sheikh, Shamim
中科院分区：
文献类型：
--
作者：
Tavassoli, Arjang;Liu, James;Sheikh, Shamim
本文介绍了9根纵向和横向玻璃纤维增强聚合物（GFRP）钢筋加固大型圆形混凝土柱的试验结果。这些试件在横向循环准静态载荷下进行了试验，同时承受了恒定的轴向载荷。根据测得的弯矩-曲率和剪力-挠度关系的滞回曲线，使用一系列与延性、耗能能力和抗弯强度相关的参数来评估每根柱的抗震性能。结果表明，采用GFRP筋和螺旋筋加固的混凝土柱具有稳定的峰后响应和较高的变形能力。结果表明，GFRP筋作为一种较新的材料，具有优良的耐腐蚀性能和较高的强重比，可以成功地用作延性混凝土柱的内配筋。
This paper presents the experimental results of nine large-scale circular concrete columns reinforced with longitudinal and transverse glass fiber-reinforced polymer (GFRP) bars. These specimens were tested under lateral cyclic quasi-static loading while simultaneously subjected to constant axial load. Based on the measured hysteretic loops of moment-versus-curvature and shear-versus-tip deflection relationships, a series of parameters related to ductility, energy dissipation capacity, and flexural strength are used to evaluate the seismic behavior of each column. The results showed that concrete columns reinforced with GFRP bars and spirals can behave in a manner that has stable post-peak response and achieve high levels of deformability. The results indicate that, as a relatively new material with excellent corrosion resistance and high strength-weight ratio, GFRP bars can be successfully used as internal reinforcement in ductile concrete columns.