An Investigation on the Accuracy of Pushover Analysis for Estimating the Seismic Perfarmance of Steel Plate Shear Walls Subjected to the ...

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An Investigation on the Accuracy of Pushover Analysis for Estimating the Seismic Perfarmance of Steel Plate Shear Walls Subjected to the  “TOHOKU Eearthquake”
Babak Behforooz *1* , Parham Memarzadeh1†, Farhad BehnamFar2‡
1. Department of Civil Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
2. Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran
Abstract
AISC-341 provides requirements for designing of SPSWs by means of a capacity-design
method in which boundary elements are designed for forces corresponding to the fully
yield strength of the web plate. This paper investigates the potentialities of the pushover
analysis to estimate the seismic deformation demands of steel plate shear wall (SPSW).
Reliability of the pushover analysis has been verified by conducting nonlinear dynamic
analysis on 9,6 & 3 story frames subjected to “STRONG MOTION RECORDS FROM
THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE”. The analysis
utilizes a finite element method involving both material and geometric nonlinearities. It is
shown that pushover analysis with predetermined lateral load pattern provides questionable
estimates of interstory drift, lateral displacement and base shear.
Key words: SPSW, TOHOKU EARTHQUAKE, pushover analysis, capacity-design method.

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