DUCTILITY AND LOAD CARRYING CAPACITY PREDICTION OF STEEL BEAM-TO-COLUMN CONNECTIONS UNDER CYCLIC REVERSAL LOADING |
| |
| Authors: | CLAUDIO BERNUZZI LUIS CALADO CARLO A. CASTIGLIONI |
| |
| Affiliation: | 1. Department of Structural Mechanics and Design Automation , University of Trento , via Mesiano 77, Trento, 38050, Italy;2. Department of Civil Engineering , Technical University of Lisbon , Avenida Rovisco Pais, Lisbon, 1096, Portugal;3. Department of Structural Engineering , Technical University of Milan , piazza Leonardo da Vinci, 32, Milan, 20133, Italy |
| |
| Abstract: | Abstract The economy and reliability of steel-framed buildings in seismic areas depend basically on the hysteretic behaviour of its individual components, such as members and joints. With reference to the latter, despite the recent semi-continuous frame approach (which appears generally very convenient for the design of low- and medium-rise steel buildings), the present state of knowledge does not allow for a complete understanding of the behaviour and the low-cycle fatigue life of beam-to-column connections under dynamic loads. This paper presents a criterion for the definition of the low-cycle fatigue strength of steel connections, and proposes two approaches for the design of steel frames in seismic zones via the assessment of the fatigue damage, which is evaluated alternatively on the basis of either the ductility or of the load carrying capacity. |
| |
| Keywords: | steel beam-to-column joints cyclic reversal loading failure criterion damage model ductility load carrying capacity |
|
|
