Case Study on Retrofit of Steel Plate Shear Walls Using Low Yield Point Steel Infill Plates
Amir Reza Khoeilar, Tadeh Zirakian*, David Boyajian, Sami Maalouf, and Nazaret Dermendjian
Department of Civil Engineering and Construction Management, California State University, Northridge, CA, USA
- *Corresponding Author:
- Tadeh Zirakian
Department of Civil Engineering
and Construction Management
California State University, Northridge, CA, USA
E-mail: [email protected]
Received Date: November 28, 2015; Accepted Date: December 18, 2015; Published Date: December 28, 2015
Citation: Khoeilar AR, Zirakian T, Boyajian D, Maalouf S, Dermendjian N (2015) Case Study on Retrofit of Steel Plate Shear Walls Using Low Yield Point Steel Infill Plates. J Steel Struct Constr 2:106. doi:10.4172/2472-0437.1000106
Copyright: © 2015 Khoeilar AR, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Steel plate shear walls (SPSWs) have been frequently used in seismic design and retrofit of buildings over the past three decades or so. Employment of infill plates made of low yield point (LYP) steel with considerably low yield stress and high elongation capacity is believed to provide the possibility in order to improve the structural and seismic characteristics of such lateral force-resisting systems. Among the various benefits is the early yielding of LYP steel infill plates, which can result in greater energy absorption capacity and limitation of the plastic deformation demand to the surrounding frame structure. On this basis, a case study is performed using numerical simulations and reported in this paper on the seismic retrofit of SPSWs using LYP steel infill plates of double thickness. It is shown that the retrofit of a steel shear wall using a LYP steel infill plate of double thickness can result in desirable plate-frame yielding sequence and interaction. Moreover, this retrofit strategy can improve the initial stiffness, buckling stability, and energy dissipation capacity of the existing SPSW system.