ABSTRACT

Abstract In this paper the influence of the beam-to-column connections on the elastic and inelastic behaviour of steel frames is investigated by means of a simplified model. Both the case of full strength connections and the case of partial strength connections are considered and the differences in the resulting behaviour of the model are evidenced. Finally, the results obtained from the analysis of the simplified model are compared with the ones, derived by means of numerical simulations, of some actual frames. Keywords: Connections, Global Ductility, Local Ductility, Second order effects

1 Introduction

The response of steel frames subjected to seismic action is strongly affected by the moment-rotation behaviour of their beam-to-column joints, i.e. the one resulting from the interaction between the connection and the panel zone.