A frictional damping based design methodology for structures

Abstract

An improved direct displacement design procedure is proposed for frictional damping based structural systems. The system is composed of beams and columns which are connected by simple connections and bracing members equipped with frictional dampers. It is shown that under the seismic loading no material yielding occurs in the structure, no component replacement is needed and the repair operation only involves re-centering of the dampers. Using the proposed design procedure, the slippage loads of the dampers are chosen such that the target displacement is satisfied. This method is used to design several structures with different heights. Non-linear transient analysis is performed to evaluate the applicability of the proposed methodology. Results show that all the case studies satisfy the intended performance objectives.