Determination of earthquake loading and seismic performance in intraplate regions

Abstract

Major intraplate earthquakes are rare, however, their occurrence is often unpredictable and can result in high consequences in terms of both life‐safety and economic loss. Consequently, the issue of intraplate seismic hazard is attracting increasing attention from the world community. It is important that the overall process of modelling earthquake‐induced loads is well understood by structural engineers who are professionally responsible and accountable for the performance of the structure and for life‐safety. The modelling for seismic hazard in regions of low and moderate seismicity is difficult and challenging, owing to the paucity of earthquake data in these regions. The objective of this paper is to present an overview of the seismic hazard analysis procedure for regions of low to moderate seismicity to a wide engineering readership. The review covers topics ranging from the modelling of seismic activity, the attenuation of seismic waves and site amplification to the representation of seismic loading for design purposes. Basic concepts that are widely known within the earthquake engineering profession are introduced for the benefit of readers who do not possess specialized knowledge in this field. Further, the latest techniques that have been developed to overcome the challenges associated with the paucity of data in regions of low to moderate seismicity are described.

Regional differences in attenuation modelling for Eastern China

“…Most of the existing empirical attenuation models are based on the broad geographical sub-divisions (Sadigh et al, 1997;Abrahamson and Silva, 1997;Toro et al, 1997;Atkinson and Boore, 1997;Dahle et al, 1990;Ambraseys et al, 1996). Ground motions predicted by these models differ by some 50-100% for similar earthquake scenarios and tectonic classifications (as reviewed in Hutchinson et al (2003)). Although significance of inter-regional variability in the bedrock condition is evident, the enlisted empirical relationships would not necessarily model accurately variability in geological conditions (i.e.…”

Protocol for testing of cold-formed steel wall in regions of low-moderate seismicity

“…The demonstrated consistency between the artificially generated and the recorded accelerograms serves to support the use of GENQKE for generating artificial accelerograms. Further evidences of consistencies between the recorded and seismological data can be found in Lam et al (2001), Balendra et al (2002), Hutchinson et al (2003), Chandler and Lam (2004), Lam and Chandler (2005), Lam et al (2009) and Yagmaei-Sabegh and Lam (2010).…”

Recent Developments in the Research and Practice of Earthquake Engineering in Australia

“…In CAM, response spectrum is defined as a product of factors representing various source, path and site effects. CAM has now been developed into a generic tool for international applications (refer review by Hutchinson 2003;. CAM is essentially a tool by which information obtained from local seismological monitoring studies is utilized to construct a representative response spectrum for direct engineering applications.…”