钢筋混凝土偏心受压构件受力性能模拟研究

Simulation study on mechanical behavior of reinforced concrete eccentric compression members

本文利用通用有限元软件ANSYS,针对GFRP约束钢筋混凝土构件的力学性能,结合试验,建立了三维有限元数值分析模型,得到了GFRP约束钢筋混凝土构件的极限承载力值以及其荷载-跨中挠度关系曲线,对比的有限元模型的计算数据与实验所得数据,两者间的数据吻合度高,证明本文所构建的有限元三维数值模型的合理性,能够比较精确地分析GFRP约束钢筋混凝土构件的非线性力学性能。同时发现曲线有着明显的三个工作阶段:弹性工作阶段、弹塑性工作阶段以及破坏阶段。GFRP约束钢筋混凝土构件充分利用了混凝土良好的受压性能与GFRP管的受拉性能。

The general finite element software ANSYS. According to the mechanical properties of GFRP confined reinforced concrete members, according to the test established three-dimensional finite element numerical analysis model, GFRP confined reinforced concrete members limit bearing capacity value and the load mid span deflection relationship curve, contrast to the finite element model of the calculated data with the experimental data, the data between the two coincide degree is high. It is proved that the construction of three-dimensional finite element numerical model of rationality, can accurately analyze the GFRP confined reinforced concrete nonlinear mechanical properties. At the same time that curves are three obvious Working stage： flexible working stage, elastic plastic stage and failure stage.GFRP confined reinforced concrete members take full advantage of the good compression performance of concrete and the tensile properties of GFRP pipe.