Determining the Coefficient of Behavior of Reinforced Concrete Frame Equipped with Steel Plate Shear Walls Based on FEMA P695 Analytical Method

Hamze Rouhi1, *, Majid Gholhaki1
1 Department of Civil Engineering, Semnan University, Semnan, Iran

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© 2023 Rouhiet al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Civil Engineering, Semnan University, Semnan, Iran; E-mail:



In recent decades, steel plate shear wall (SPSW) has been used as an efficient lateral strength system in steel structures. In this research, the seismic behavior of a relatively new system of reinforced concrete frame (RCF) equipped with SPSW has been investigated. Behavior coefficient, as the most important parameter of structural behavior, reduces the lateral forces of the earthquake and the structure with inelastic deformations, reduces the amount of earthquake energy, and structures are designed for less force than the amount of elastic behavior.


Four low, mid, and high-rise models with 4, 8, 12 and 24-stories under 44 far-field records and 56 near-field earthquake records have been proposed by using FEMA P695. Ductility and coefficient of behavior of a relatively new system of RCF equipped with SPSW have been calculated according to the proposed method FEMA P695. Due to the significant number and relatively wide range of earthquake records used in the analysis and the use of incremental dynamic analysis (IDA), considering the inherent uncertainty in the earthquake, the results of the analysis are more valid.


The results of the analysis showed the coefficient of behavior of the RCF equipped with SPSW in the limit state to be equal to 8.7, and in the allowable stress state as equal to 12.5.


A comparison of the calculated coefficient of behavior of RCF equipped with SPSW (8.7) with the proposed value of ASCE07-2010 (8) shows an increase of 8.75% that indicates this code to be conservative.

Keywords: Reinforced concrete frame, Steel plate shear wall, Coefficent of behavior, FEMA P695, Nonlinear incremental dynamics, IDA.