Improved hazard model for performance-based earthquake engineering (2007)
Type of ContentConference Contributions - Published
PublisherUniversity of Canterbury. Civil and Natural Resources Engineering
AuthorsBradley, B.A., Dhakal, R.P., Mander, J.B., MacRae, G.A.show all
An improved ground motion seismic hazard model for use in performance based earthquake engineering is presented. The model is an improved approximation of the so-called 'power law' model, which is linear in log-log space. The mathematics of the model and uncertainty incorporation is briefly discussed. Various means of fitting the approximation to 'exact' hazard curves developed by seismologists are discussed, including the limitations of the model. Based on 'exact' hazard data for major centers in New Zealand, the parameters for the proposed model are calibrated. To illustrate the significance of the proposed model, a simplified performance-based assessment is conducted on a typical bridge pier. The new hazard model is compared to the current power law relationship to illustrate its effects on the loss estimation assessment. The propagation of seismic hazard uncertainty to drift hazard is also considered.
CitationBradley, B.A., Dhakal, R.P., Mander, J.B., MacRae, G.A. (2007) Improved Hazard Model for Performance-Based Earthquake Engineering. Palmerston North, New Zealand: New Zealand Society of Earthquake Engineering 2007 Conference (NZSEE 2007), 30 Mar–1 Apr 2007. Proceedings of the 2007 Annual NZSEE Technical Conference, Paper 03.
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