论文部分内容阅读
为了研究纤维编织网增强混凝土(TRC)加固钢筋混凝土(RC)柱的抗震性能,设计了5个RC柱,对其进行低周往复加载试验,其中1个为对比柱,另外4个采用TRC加固,主要分析了加固层数对抗震性能的影响。研究表明:TRC加固能够有效限制混凝土裂缝的发展,提高柱的开裂荷载和峰值荷载;在1~3层加固范围内,加固柱的延性得到较大改善,耗能能力随着加固层数的增多而增强,但继续增加加固层数,延性提高幅度有限;TRC加固柱的刚度退化曲线较长,具有较好的抗震变形能力,但加固层数对刚度退化速率并无明显影响;加载后期,加固柱的耗能曲线斜率明显增大,TRC的约束作用充分发挥。
In order to study the seismic behavior of reinforced concrete (RC) columns strengthened with fiber braided wire reinforced concrete (TRC), five RC columns were designed and tested for low-cycle reciprocating loading. One was a control column and the other four were reinforced with TRC , Mainly analyzes the influence of reinforcement layer on seismic performance. The results show that the strengthening of TRC can effectively limit the development of concrete cracks and increase the cracking load and peak load of the columns. The ductility of reinforced columns is greatly improved in the reinforcement range of 1 to 3 layers, and the energy dissipation capacity increases with the number of reinforcement layers But the reinforcement layer continued to increase with a limited increase in ductility. The stiffness degradation curve of the TRC reinforced column was longer and had better anti-seismic deformation capacity, but the reinforcement layer number had no obvious effect on the stiffness degradation rate. In the later stage of loading, The slope of the energy dissipation curve of the column is obviously increased, and the constraint of TRC is fully exerted.