Proposal of a system of spectrum intensity scales for the scaling of natural accelerograms accounting for hysteretic behaviour and local site conditions. A new system and its application on displacement-based design

Martinez-Rueda, J.E. (2006) Proposal of a system of spectrum intensity scales for the scaling of natural accelerograms accounting for hysteretic behaviour and local site conditions. A new system and its application on displacement-based design In: First European conference on earthquake engineering and seismology, 3-8 September 2006, Geneva, Switzerland.

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Abstract

The evolution of attenuation equations is an interesting aspect of the development of Engineering Seismology that has taken a long and fruitful road. Recently (2005), a robust attenuation model for Europe has been proposed by Ambraseys, Douglas, Sarma and Smith (ADSS). The ADSS model estimates the attenuation of spectral acceleration as a function of moment magnitude, source-to-site distance, faulting mechanism and local site conditions. On the other hand, past studies have shown that a good correlation exists between spectrum intensity (SI) and ductility demand. This indicates that SI can be used as an objective measure of instrumental intensity as efficient earthquake-resistant structures are expected to behave inelastically under the design earthquake. This article introduces a semiempirical model to estimate Housner Spectrum Intensity (SIH) in Europe. The proposed model is based on a parametric study on the variation of pseudovelocity spectra derived from a large family of acceleration spectra predicted by the ADSS model. Accordingly, the proposed model estimates the attenuation of SIH as a function of the same parameters of the ADSS model. Comparisons between observed and estimated SIH values are critically analyzed and the potential application of the proposed model for direct accelerogram scaling and vulnerability analysis is highlighted.

Item Type: Contribution to conference proceedings in the public domain ( Full Paper)
Additional Information: Proceedings published in CD format
Subjects: H000 Engineering > H200 Civil Engineering > H210 Structural Engineering
H000 Engineering > H200 Civil Engineering
Faculties: Faculty of Science and Engineering > School of Environment and Technology > Ground water and structural engineering
Faculty of Science and Engineering > School of Environment and Technology
Depositing User: editor environment
Date Deposited: 11 Mar 2010
Last Modified: 16 Feb 2011 15:53
URI: http://eprints.brighton.ac.uk/id/eprint/1419

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