1.Department of Civil Engineering, Nanjing Institute of Technology, 211167, Nanjing, China; 2. Department of Architecture and
Civil Engineering, Jinken College of Technology, 211156, Nanjing, China
Abstract：
The finite-element model uses fiber elements to simulate the performance of beam-column interface, and the model assigns the compression length of the beam end to model the gap opening mechanism. The different ratios of Lcr/hb were discussed to determine the influence of the analysis results, so it was suggested that the rational compression length were 0.25~0.4. The mild steel bars were simulated by separating nonlinear truss element, and by adjusting the parameters to simulate the real strength and stiffness of the bars. The beam-column panel zone shear deformation was considered to calculate the total deformation, the relationship between the shearing stiffness and joint moment was deduced. The cyclic curves of three exterior specimens were simulated, and by comparison of the modeling results and measured results, the validity of the precise modeling method was proved. At last, the cyclic curves of interior subassemblage was predicted, and cyclic curves show that the interior subassemblage has better energy-dissipation capacity.
