Drift demand on flexible structures in a distant earthquake: Case history of Singapore and Malaysia

This study presents ground motion simulations for Singapore and Malaysia for large magnitude long distance earthquakes striking from off-shore of Sumatra. Of major concerns are the hazardous deep, and soft, soil sites. Borehole records of selected soil sites have been collated and archived along with accelerograms recorded in downholes from the recent major earthquake events. Seismic demands expressed in terms of acceleration and drift demands, calculated from the recorded accelerograms, have been compared with those obtained from simulations. This important comparative study forms the basis of the development of a realistic and reliable seismic demand model for Singapore and the surrounding peninsular region. © 2009 Taylor & Francis Group, London.