SEISMIC DESIGN OF STEEL FRAMES WITH FUSEIS BEAM LINK ENERGY DISSIPATION SYSTEMS

Abstract eng:
Within the EU funded project INNOSEIS different seismic devices developed in earlier projects are worked up with the aim to provide information sheets and design guidelines for an easy practical implementation of these systems. One of these seismic protection systems is the FUSEIS beam link concept. The main idea is to use two closely spaced strong columns rigidly connected by several beams, resulting in a Vierendeel girder in upright position. Energy dissipation is originated by plastification of the connecting girders, similar as in seismically designed moment resisting frames. Forming the lateral load resisting system but not taking part intentionally in the vertical load transfer, the girders can be inspected and replaced much more easily after a strong earthquake. In this paper, first the FUSEIS beam link system is described in detail supported by results of experimental tests. Behaviour and main mechanical principles are outlined. Further on, three case studies consisting of steel office buildings of different heights are designed for seismic loads using the FUSEIS beam link solution.

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