Development of revised stiffener spacing requirements for seismic links in eccentrically braced frames
Abstract
The current dissertation re-examines the transverse stiffener spacing requirements of short and intermediate length seismic steel links in eccentrically braced frames (EBFs). Trans-verse web stiffeners enhance the rotation capacity and the link's ability to dissipate energy due to seismic excitation.The current seismic design standards require the use of transverse stiffeners for EBF links of short and intermediate length. The maximum permitted distances in order to achieve the desired seismic performance targets are established in current seismic provisions. These design procedures for EBFs have been based on semi-analytical and experimental studies on isolated links that were carried out in the '80s.In the current study revised stiffener spacing requirements for short and intermediate length links in EBFs in order to attain the maximum permitted inelastic rotation capacities per EN1998-1 are proposed. At first, an experimental dataset was assembled and presented. This dataset was com ...
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