尺寸效应对GFRP管型钢混凝土组合柱力学性能的影响

摘要

为研究尺寸效应对GFRP管型钢混凝土组合柱力学性能的影响规律,对4根组合柱试件进行轴压试验,并验证了Ansys软件所建模型的正确性.建立5种尺寸的组合柱模型进行有限元分析.结果表明:随着试件尺寸的增大,试件的极限应力和延性都会随之降低,且降低幅度呈现非线性变化.该研究为GFRP管型钢混凝土组合柱组合柱的实际应用提供一定理论依据.%In order to study the size effect on mechanical properties of glass fiber reinforced plastic(GFRP) tube steel concrete column,the axial compression experiments on 4 GSC composite columns are carried out;and then the correctness of the model by Ansys software is verified.The finite element analyses of the composite column model with five sizes are carried out.The results show that an increase in the size of components is followed by a gradual decrease in the ultimate stress and ductility;and the decrease amplitude shows a nonlinear change.The study results provide a certain theoreticalbasis for the practical application of GFRP tube steel concrete column.