Practical Advanced Analysis Of Space Steel Frames Using Fiber Hinge Method

摘要

This paper presents a new nonlinear fiber hinge beam-column element for modeling space steel frames. To simulate the inelastic action according to the concentrated inelastic approximation, it is supposed that the beam-column element is composed from two exterior fiber hinge segments and an interior elastic segment. The stability functions obtained from the exact stability solution of a beam-column subjected to axial force and end bending moments are used to represent the second-order effect. The obtained results are demonstrated to be accurate by comparing them with the exact solution, proposed equation for design, and those from ABAQUS and plastic-zone analyses. The proposed numerical procedure proves to be a reliable and effective tool for daily use in engineering design of large-scale steel space frames.