Simplified displacement demand prediction of tall asymmetric buildings subjected to long-distance earthquakes

Abstract

Large-magnitude long-distance earthquakes generated from Sumatra have significant potential engineering implications in Singapore and the Malaysian Peninsula due to accentuation by resonance in both the soil and buildings, and importantly, dynamic torsional amplification of elastic response of tall buildings. This paper introduces a simple asse ssment procedure which accounts for these amplification mechanisms particularly the effects on dynamic torsional coupling. In the proposed method, which is demonstrated with a typical 16-storey wall-frame building, the eccentricity and stiffness parameters of the equivalent single-storey building model were determined by calibrating its centre of rota..