考虑屈曲的钢筋滞回性能试验研究

Experimental Study on Hysteretic Behaviors of Rebar Considering Buckling

对不同长细比的钢筋进行反复荷载试验研究,考察不同长细比的钢筋在荷载幅值逐渐增大加载的性能变化规律。并采用ABAQUS有限元软件建立考虑屈曲影响的钢筋滞回模型与试验对比。结果表明:钢筋在拉压循环荷载作用下,长细比、塑性变形对其抗震性能产生影响,采用ABAQUS有限元软件建立考虑屈曲影响的钢筋滞回模型,为今后研究提供重要依据。

In this study, the repeated load test of rebar with different length-to-fine ratios was carried out, and the performance change law of rebar with different length-to-fine ratios gradually increasing in load amplitude was investigated. In this study, ABAQUS finite element software was used to establish a rebar hysteresis model considering the effect of buckling and compare it with the test. The results show that the length to slenderness ratio and plastic deformation of reinforcing bars under cyclic loading in tension and compression have an effect on their seismic performance, and the use of ABAQUS finite element software to establish a hysteresis model considering the effect of buckling provides an important basis for future research.