地铁车站中柱抗震性能试验研究

Experimental research on seismic performance of central column in metro station

根据南宁地铁清平坡站的实际情况,采用1∶2缩尺比设计了普通钢筋混凝土柱和钢筋混凝土分体柱进行拟静力试验,研究普通钢筋混凝土柱和钢筋混凝土分体柱的破坏模式,分析各类构件的延性、刚度退化、滞回耗能等抗震性能。试验结果表明:分体长柱、短柱的延性系数分别达到3.44,4.34,其耗能系数分别达1.25,1.47;分体柱的刚度退化较为缓和,充分表明分体柱具有较好的抗震性能。

According to the actual situation of Qingpingpo Station of Nanning Metro, ordinary reinforced concrete columns and reinforced concrete split columns at a scale of 1∶2 were designed to carried out the pseudo-static test. The failure modes of ordinary reinforced concrete columns and reinforced concrete split columns were studied, and seismic performance of various components were analyzed, such as the ductility, stiffness degradation, hysteretic energy dissipation. The test results show that the ductility coefficients of the split long column and short column reach 3.44 and 4.34 respectively, and the energy dissipation coefficients reach 1.25 and 1.47 respectively;the stiffness degradation of the split column is relatively gentle, which fully shows that the split column has good seismic performance.