自密实轻骨料混凝土框架柱抗震性能试验研究

An Experimental Study on Seismic Behavior of Self-compacting Lightweight Aggregate Concrete Frame Columns

通过三个自密实轻骨料混凝土框架柱低周往复试验研究,分析不同轴压比对框架柱抗震性能的影响,并与一个普通混凝土框架柱对比分析.试验结果表明:随着轴压比的增加,自密实轻骨料混凝土框架柱的延性逐渐减低,耗散系数逐渐减小;相同轴压比下,普通混凝土框架柱的滞回环更加饱满,耗能能力和延性好于自密实轻骨料混凝土构件.

On the basis of experimental results on three self-compacting lightweight aggregate concrete frame columns under low cyclic load, the seismic performance of frame columns in the case of different axi- al compression ratios is analized and compared with one ordinary frame column. The results indicate that with axial compression increasing, the dissipation coefficient and ductility decrease. Under the same eondi-tion of axial compression ratio, hysteresis loop of ordinary concrete frame column is fuller. In contrast to ordinary concrete frame column, the ductility and dissipation factor of self-compacting lightweight aggre- gate concrete frame columns is lower.