Finite Element Analysis of The Seismic Behaviors for Steel Fiber Reinforced Concrete Frame Joints

摘要

By finite element analysis the 3 steel fiber reinforced high-strength concrete frame exterior joints under the low cycle loading, it discussed the influence of the axial compressive ratio on the seismic capacity of the frame exterior joint. The result shows that, with the increase of axial compressive ratio, it enhances the restriction role to the joint core area concrete, improves the energy dissipation capacity and increases the joint ductility. It proves the rationality of the unit type, material stress-strain relations and failure criteria used in the finite element analysis model. Therefore, it provides a reference for practical usage.