Abstract
Studies on the constructability of cold-formed steel (CFS) members are lacking. In this context, this paper proposes an integrated panel to replace the studs and steel sheet in the steel-sheathed wall system used in light gauge steel frames. The integrated panel was developed, to not only exhibit better structural performance and constructability than the steel-sheathed wall system, but to also reflect the appropriate details for applications to on-site panel construction. Cyclic loading tests were performed to investigate the seismic performances of three integrated panel specimens and a steel-sheathed panel specimen. The integrated panel specimens exhibited greater deformation capacity, ductility and equivalent damping ratio than the steel-sheathed panel. Although the web slenderness of the integrated member was nearly 400, the nominal strength of the integrated panel was predictable on an AISI standard. However, for stud-reinforced integrated panels, the nominal strength was overestimated by 45%–60%, and a draft equation was proposed to predict the yield strength of these panels. The proposed equation accurately predicted the yield strength of the stud-reinforced integrated panel specimens. The study results can aid in the construction of light gauge steel frames that require reinforcing parts with a high web slenderness ratio.
Highlights
As light gauge steel frames are constructed for low-rise buildings with varied demand, on-site panel construction methods are more predominantly employed than factory panel construction methods
This study proposes an integrated panel to replace the studs and steel sheet in the steel-sheathed wall system for light gauge steel frames
This paper proposes an integrated panel that can replace studs and steel sheet in a steel-sheathed paper proposes an integrated that can replace studs sheet in a steel-sheathed wallThis system
Summary
There has been increasing interest in light gauge steel frames—which have robust seismic performance—as the seismic design law was recently extended, such that two or more single-family or multi-family developments are subject to earthquake-resistant design rules. This has been the case since the 2016 Gyeong-ju and. Light gauge steel frames are built with cold-formed steel (CFS) members. These members are lightweight, and bring about good seismic properties [1,2,3]. On-site panel construction has a drawback, in that material transportation and deformation are likely to occur at the time of construction, thereby decreasing the initial rigidity of CFS members [4]
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