Earthquake Response Estimation based on Two-Modes Pushover Analysis of Space Frames covered by Membrane Roof

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Publication year 2008
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Title Earthquake Response Estimation based on Two-Modes Pushover Analysis of Space Frames covered by Membrane Roof
Author Kunihiro TAKAHASHI,Naoya HIGUCHI,Shoji NAKAZAWA,Tatsuya YOSHINO,Shiro KATO
Summary This present paper discusses earthquake response characteristics of an arch-like space frame covered by membrane roof. The structure is supported by reinforced concrete frames of heavy mass and high rigidity. First, a series of time history analysis is performed to investigate the nonlinear response characteristics of the structure under major earthquakes considering the material nonlinearity of the reinforced concrete substructure, and second a pushover analysis of the total structure using two dominant modes is proposed and performed to clarify if the proposed pushover analysis using the two modes. Finally, the validity is confirmed because of the fact that the comparison of the results; stresses and deformations, based on the pushover analysis shows a fairly fine agreement with those based on time history analysis.