Analysis of Beam-Column-Gusset Components in 5-Story Value-Added Frame

Abstract eng:
This paper describes finite element analysis of subassemblies composed of beams, columns, and gusset plates in passively controlled buildings. Numerical analysis with consideration of geometrical and material nonlinearity is confirmed to have good performance for simulating degrading of frames due to local buckling of the bottom flange of a beam in cyclic response by comparison of test results. Yielding and buckling patterns of the frame members are summarized in subassemblies having various kinds of gusset connections. Stress profile around gusset connection is studied for design of gusset plate. A parametric study is also conducted to investigate sensitivity to frame stiffness by variation of gusset connections. Modeling techniques by using linear element for gusset connections is investigated for dynamic response analysis, referring a proposed equivalent strut model. Finally, a practical design procedure of thickness of gusset plate based on equivalent strut action is proposed for gusset plate subjected combined damper forces and frame forces.

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