BEHAVIOUR OF CONNECTIONS OF SEISMIC RESISTANT STEEL FRAMES

摘要

The RECOS Copernicus project sponsored by the European Commission is basically dealing with the influence of joints on the seismic response of steel moment resisting frames. It has been the largest European project in this field. Many experimental tests, theoretical activities and numerical studies have been performed. The obtained results are very helpful for design, research and codification, because they give an answer to many important questions recently risen from the last earthquakes. A similar activity has been contemporary carried out in USA by the SAC Steel project, in order to analyse the unexpected damage in steel structures during the Northridge earthquake. The out-put of both these two projects will be presented during the next STESSA 2000 Conference (Montreal, August 21st - 24th) and the main results will be compared in a special session. New possible developments in this field will be stated on the basis of round-table discussion among international experts. In addition, this topic will be of strong interest in next years within the activity of revision of the national seismic codes. In particular, EUROCODE 8 will take important advantages during is on-going conversion phase from the output of RECOS project.