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Seismic damage estimation of in-plane regular steel moment resisting and x-braced frames

Kamaris, GS and Vallianatou, YM and Beskos, DE (2012) Seismic damage estimation of in-plane regular steel moment resisting and x-braced frames. Bulletin of Earthquake Engineering, 10 (6). pp. 1745-1766. ISSN 1570-761X

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Abstract

Simple empirical expressions to estimate maximum seismic damage on the basis of five well known damage indices for planar regular moment resisting and x-braced steel frames are presented. They are based on the results of extensive parametric studies concerning the inelastic response of a large number of these frames to a large number of ground motions. Thousands of nonlinear dynamic analyses are performed by scaling the seismic records to different intensities in order to drive the structures to different levels of inelastic deformation and finally to collapse. The statistical analysis of the created response databank indicates that the number of stories, period of vibration, stiffness ratio, capacity factor (for moment resisting frames), brace slenderness ratio and column stiffness (for x-braced frames) and characteristics of the ground motion, such as characteristic period and spectral acceleration, strongly influence damage. Nonlinear regression analysis is employed in order to derive simple formulae, which reflect the influence of the aforementioned parameters and offer a direct estimation of the damage indices used in this study. More specifically, given the characteristics of the structure and the ground motion, one can calculate the maximum damage observed in column bases and beams (for moment resisting frames) or in braces (for x-braced frames). Finally, two examples serve to illustrate the use of the proposed expressions and demonstrate their accuracy and efficiency. © 2012 Springer Science+Business Media Dordrecht.

Item Type: Article
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s10518-012-9387-2
Uncontrolled Keywords: 0403 Geology, 0905 Civil Engineering
Subjects: Q Science > QE Geology
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Civil Engineering
Publisher: Springer
Date Deposited: 13 Jun 2016 08:48
Last Modified: 16 Nov 2016 09:46
DOI or Identification number: 10.1007/s10518-012-9387-2
URI: http://researchonline.ljmu.ac.uk/id/eprint/3766

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