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国内外学者对碳纤维约束混凝土柱的抗震性能进行了较多研究,但对碳纤维约束高强混凝土圆柱的抗震性能研究相对较少,尤其对损伤后的碳纤维约束高强混凝土圆柱的抗震性能研究更少。对3根碳纤维约束高强混凝土圆柱先进行伪静力试验模拟损伤,加载到纵筋受拉屈服后卸载,再次进行伪静力试验,与3根未损伤碳纤维约束高强混凝土圆柱的抗震性能进行对比,通过对损伤与未损伤模型柱的滞回曲线、骨架曲线、水平承载力、极限位移角等参数的分析比较,考察碳纤维约束高强混凝土柱的剩余抗震性能。
Scholars at home and abroad have done a lot of research on the seismic behavior of carbon fiber reinforced concrete columns. However, the research on the seismic behavior of high strength concrete columns with carbon fiber constraints is relatively rare, especially for the columns with high carbon fiber confined. Three columns of carbon fiber confined high-strength concrete columns were subjected to pseudo-static test to simulate the damage. After being loaded and loaded on the longitudinal reinforcement, the column was unloaded after yielding and yielding again. The pseudo-static test was conducted again and the seismic performance was compared with that of three unrestricted carbon fiber confined high strength concrete columns. Through analysis and comparison of hysteresis curve, skeleton curve, horizontal bearing capacity and ultimate displacement angle of damaged and unimproved model columns, the residual seismic performance of high-strength concrete columns confined by carbon fibers is investigated.