高延性聚酯纤维加固RC柱抗震性能试验研究

Experimental Study on Seismic Performance of RC Column Reinforced with High Ductility Polyester Fiber

通过6根高延性聚酯纤维加固RC柱水平荷载低周反复试验,分析不同混凝土强度、不同加固层数试件的破坏形态、荷载-位移滞回曲线、延性、耗能、刚度退化等。研究结果表明:采用高延性聚酯纤维加固后的试件裂缝发展缓慢,其承载能力、耗能能力、延性均有不同程度地提高,能有效改善约束效果。

By the horizontal load cyclic loading test of six RC column reinforced with high ductility polyester fiber,the different concrete strength,reinforcement layers of different failure modes of specimens,load-displacement hysteretic curve,ductility,energy dissipation and stiffness degradation are analyzed. The results show that： the crack developments of the specimen after reinforced with high ductility polyester fiber are very slow,the carrying capacity,energy dissipation,and ductility improve in varying degrees,so it can effectively improve the constraint effect.