Seismic control of vertically and horizontally irregular steel high-rise buildings by tuned mass dampers including SSI

Abstract The architectural requirements imposed on the structural design of buildings sometimes necessitate vertical and horizontal irregularities with their possibly dangerous effects when these structures are subjected to earthquakes. One greatest challenges in engineering is a steel high-rise building (HRB) irregularities. In this research, two irregular (HRBs) were seismically analyzed as 3D models considering soil–structure interaction (SSI) tuned mass damper (TMD) systems used mitigate seismic response under different studied HRBs vertically (step-pyramid-shaped) HRB, both horizontally (L-shaped in-plan, stadium-shaped) HRB. SSI provides actual tall earthquake, mitigation schemes using TMDs suggested arrangements top plan along elevation achieve control structures. present study has shown that best efficiency effect earthquakes obtained by implementing at corners HRB also floor levels upper half-height