Introduced in this paper are several alternative ground-motion intensity measures (IMs) that are intended for use in assessing the seismic performance of a structure at a site susceptible to near-source and/or ordinary ground motions. A comparison of such IMs is facilitated by defining the “efficiency” and “sufficiency” of an IM, both of which are criteria necessary for ensuring the accuracy of the structural performance assessment. The efficiency and sufficiency of each alternative IM, which are quantified via (i) nonlinear dynamic analyses of the structure under a suite of earthquake records and (ii) linear regression analysis, are demonstrated for the drift response of three different moderate- to long-period buildings subjected to suites of ordinary and of near-source earthquake records. One of the alternative IMs in particular is found to be relatively efficient and sufficient for the range of buildings considered and for both the near-source and ordinary ground motions.
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Research Article|
May 01, 2007
Structure-Specific Scalar Intensity Measures for Near-Source and Ordinary Earthquake Ground Motions
Nicolas Luco, M.EERI;
Nicolas Luco, M.EERI
a)
Department of Civil & Environmental Engineering, Stanford University, Stanford, CA 94305 (now at U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225)
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C. Allin Cornell, M.EERI
C. Allin Cornell, M.EERI
b)
Department of Civil & Environmental Engineering, Stanford University, Stanford, CA 94305-4020
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Earthquake Spectra (2007) 23 (2): 357–392.
Article history
received:
05 May 2006
accepted:
08 Jan 2007
first online:
01 Jun 2020
Citation
Nicolas Luco, C. Allin Cornell; Structure-Specific Scalar Intensity Measures for Near-Source and Ordinary Earthquake Ground Motions. Earthquake Spectra 2007;; 23 (2): 357–392. doi: https://doi.org/10.1193/1.2723158
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