预压型钢混凝土柱抗震性能有限元分析

Finite element analysis on seismic resistance of precompressed steel-reinforced-concrete columns

以型钢混凝土柱为基础上,设计预压型钢混凝土柱;采用ANSYS有限元分析软件,对9个试件按照预压比、强度等级、轴压比、剪跨比、配箍率分别进行低周反复荷载试验,得到不同条件下的预压型钢混凝土柱破坏形态及滞回曲线.研究结果表明,预压型钢混凝土柱有良好的抗震性能,但抗震性能随着轴压比增大和混凝土强度的提高而降低.

Based on a steel concrete column,a new column form named steel concrete column of precompression chamber was presented. The engineering~ significance and recent researches of the steel concrete column of precompression chamber were introduced. The article applies the ANSYS finite element analysis software, through the low-week-repeated-load experiment of 9 steel concrete columns of precompression chamber for different concrete intensity ranks,different steel pre-compressed ratios and different axis presses ratios, and obtains the pre-compressed ratio destruction shape and hysteresis curve under above different situations. It was concluded that the steel concrete column could improve its aseismic performance,but the performance will be reduced when improve its concrete intensity and part axis press ratio.