Abstract
In order to study the axial compression performance of spatial steel truss confined concrete composite columns, the finite element software ABAQUS was used to establish the spatial steel truss confined concrete composite column models. The stress and strain states of the steel truss and core concrete in the composite column are analysed. Then, the influence of parameters such as angle steel size, the spacing and arrangement of steel plate, and strength of the concrete on the axial compression mechanical performance and restraining effect of the spatial steel truss confined concrete are discussed. The research results show that the spatial steel truss can exert a good restraining effect on the core concrete. At the same time, the spacing of steel plate is the key factor that affects the restraining effect of the spatial steel truss on the core concrete.
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