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The extended N2 method considering higher mode effects in both plan and elevation
ID Kreslin, Maja (Author), ID Fajfar, Peter (Author)

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Abstract
The extended N2 method has been developed, which takes into account higher mode effects both in plan and in elevation. The extension is based on the assumption that the structure remains in the elastic range when vibrating in higher modes. The seismic demand in terms of displacements and storey drift can be obtained by combining the results of basic pushover analysis and those of standard elastic modal analysis. In the paper, the proposed procedure was summarized and applied to a test example which represents an actual 8-storey reinforced concrete building. The results obtained by the extended N2 method were compared with the results of nonlinear response history analysis and basic N2 analysis without the consideration of higher modes. The extended N2 method was able to provide fair, conservative estimates of response in the case of the test example. In comparison to the basic N2 method, the predictionof seismic demand was greatly improved in the upper part of the building and at the flexible edges.

Language:English
Keywords:earthquake engineering, structural engineering, N2 method, higher mode effect, nonlinear static analysis, nonlinear dynamic analysis, pushover analysis
Work type:Article (dk_c)
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2012
Publication status in journal:Published
Article version:Publisher's version of article
Submitted for review:13.12.2010
Article acceptance date:02.07.2011
Publication date:30.09.2011
Number of pages:Str. 695-715
Numbering:Letn. 10, št. 2
UDC:624.042.7
ISSN on article:1570-761X
DOI:10.1007/s10518-011-9319-6 This link opens in a new window
COBISS.SI-ID:5591649 This link opens in a new window
Publication date in RUL:10.11.2021
Views:126
Downloads:0
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Record is a part of a journal

Title:Bulletin of earthquake engineering
Publisher:Springer
ISSN:1570-761X
COBISS.SI-ID:897639 This link opens in a new window

Secondary language

Language:Slovenian
Keywords:IKPIR 50let, potresno inženirstvo, gradbene konstrukcije, metoda N2, učinek višjega načina, nelinearna statična analiza, nelinearna dinamična analiza, potisna analiza

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