Maximum bending moments of beams in steel frames subjected to strong grand motions

This paper presents the results of analytical studies in order to evaluate flexural strength demand for beam-to-column connections in earthquake-resistant design. The authors have developed a computer program based on the one-dimensional finite element method in which a generalized constitutive relationship considering isotropic hardening and kinematic hardening is incorporated. Numerical analysis of steel wide-flange beams is carried out under various loading sequences similar to seismic response. The results are summarized as a method to predict the maximum bending moments of beams, taking into account the maximum story drift angles.