Abstract
Dual-steel structural systems represent an innovation in seismic design in Europe. This type of structures, in which mild carbon steel (MCS) is used in dissipative members while high strength steel (HSS) is used in non-dissipative ‘elastic’ members, can be reliable and cost efficient. Because actual seismic design rules do not cover this specific configuration, a research project started with the aim to investigate and evaluate the seismic performance of dual-steel building frames. The paper makes a short description of the research project and presents the experimental program to be performed. For the beam-to-column joints that will be tested, a number of numerical simulations have been realized with the aim to anticipate their behavior and to find answers to problems for which decisions were taken in the design process. Finally, the results from the numerical analysis are presented.
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