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Seismic response of plane steel MRF with setbacks: estimation of inelastic deformation demands
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Karavasilis, Theodore L., Bazeos, Nikitas and Beskos, D. E. (2008) Seismic response of plane steel MRF with setbacks: estimation of inelastic deformation demands. Journal of Constructional Steel Research, Vol.64 (No.6). pp. 644-654. doi:10.1016/j.jcsr.2007.12.002 ISSN 0143-974X.
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Official URL: http://dx.doi.org/10.1016/j.jcsr.2007.12.002
Abstract
An extensive parametric study on the inelastic seismic response of plane steel moment resisting frames (MRF) with setbacks is presented. A family of 120 such frames, designed according to the European seismic and structural codes, are subjected to an ensemble of 30 ordinary (i.e. without near-fault effects) earthquake ground motions scaled to different intensities in order to drive the structures to different limit states. The statistical analysis of the created response databank indicates that the number of stories, beam-to-column strength ratio, geometrical irregularity and limit state under consideration strongly influence the heightwise distribution and amplitude of inelastic deformation demands. Nonlinear regression analysis is employed in order to derive simple formulae which reflect the aforementioned influences and offer, for a given strength reduction (or behaviour) factor, three important response quantities, i.e. the maximum roof displacement, the maximum interstorey drift ratio and the maximum rotation ductility along the height of the structure. A comparison of the proposed method with the procedures adopted in current seismic design codes reveals the accuracy and efficiency of the former.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | Journal of Constructional Steel Research | ||||
Publisher: | Elsevier Ltd. | ||||
ISSN: | 0143-974X | ||||
Official Date: | June 2008 | ||||
Dates: |
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Volume: | Vol.64 | ||||
Number: | No.6 | ||||
Number of Pages: | 11 | ||||
Page Range: | pp. 644-654 | ||||
DOI: | 10.1016/j.jcsr.2007.12.002 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | University of Patras K. Karatheodoris Research Program (Greece) |
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