Determination of response modification coefficient of SPSW in RC frame using plastic design method

ABSTRACT

In the last few decades, the idea of using thin steel plate shear walls (SPSW) as a resistant system against lateral loads in designing and reinforcing buildings has been of concern to researchers and designers. In this research, we studied the response modification coefficient (R), the overstrength factor (Ω₀), and the deflection amplification factor (C_d) in a reinforced concrete special moment frame (RC-SMF) with thin SPSW. We used the performance-based plastic design (PBPD) method. For this purpose, we consider frames with SPSW systems with different story numbers. Static pushover analysis is performed on these frames using the strip model in OpenSees software. OpenSees software is the Open System for Earthquake Engineering Simulation located at http://opensees.berkeley.edu. Simulation results were compared with experimental results, and acceptable matching was observed between the two. Finally, the values of response modification coefficient (R), overstrength factor (Ω₀), and deflection amplification factor (C_d) for RC-SMF with thin SPSW were calculated based on the Uang method. The ultimate limit design method proposed them as 9.37, 2.21, and 11.06.

KEYWORDS:

• Thin Steel Plate Shear Wall (SPSW)
• reinforced concrete special moment frame (RC-SMF)
• performance-based plastic design (PBPD)
• response modification coefficient (R)
• overstrength factor (${\mathrm{\Omega }}_0$)
• deflection amplification factor ($C_d$)

Disclosure statement

No potential conflict of interest was reported by the author(s).

Notes

1. Design Base Earthquake (DBE).

2. Maximum Considered Earthquake (MCE).