Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full-scale fire resistance tests of steel and plasterboard sheathed web-stiffened stud walls
Abstract Light gauge steel-framed (LSF) walls, commonly made with lipped channel studs and gypsum plasterboard sheathing, are increasingly being used in low to mid-rise buildings. Improvements have been made with respect to fire, wind/seismic and energy performance of LSF walls with the use of improved stud sections, wall configurations, different sheathing members, and insulation materials. Although the provision of sheet steel as sheathing has been found to improve the in-plane shear capacity of LSF walls, its effects on the fire performance of load bearing walls remain unknown. Three full-scale ISO 834 standard fire tests were conducted in this study to investigate the fire performance of axially loaded gypsum plasterboard and steel sheathed LSF walls made with web-stiffened studs. The results revealed that compared to the commonly used lipped channel stud, the web-stiffened stud is capable of withstanding a 57% greater axial compression load, yet yield the same fire resistance level (FRL), when sheathed only with two layers of gypsum plasterboard. Under the selected load ratio, the addition of steel sheathing caused only marginal improvements in the stud temperature development, resulting in minor improvements to the FRL of load bearing walls. However, the axial load bearing capacity improvement caused by the inclusion of steel sheathing allowed the web-stiffened stud to withstand a 10% greater axial compression load compared to the plasterboard only wall.
Highlights Investigated the effect of steel and plasterboard sheathing on the fire performance of web-stiffened stud walls. Web-stiffened studs were able to retain their higher load bearing capacity even in fire. Steel sheathing did not alter the stud temperature development significantly. Steel sheathing improved the fire resistance marginally due to the opening-up of sheathing joints. Steel sheathing allowed web-stiffened studs to withstand greater axial loads in fire than lipped channels.
Full-scale fire resistance tests of steel and plasterboard sheathed web-stiffened stud walls
Abstract Light gauge steel-framed (LSF) walls, commonly made with lipped channel studs and gypsum plasterboard sheathing, are increasingly being used in low to mid-rise buildings. Improvements have been made with respect to fire, wind/seismic and energy performance of LSF walls with the use of improved stud sections, wall configurations, different sheathing members, and insulation materials. Although the provision of sheet steel as sheathing has been found to improve the in-plane shear capacity of LSF walls, its effects on the fire performance of load bearing walls remain unknown. Three full-scale ISO 834 standard fire tests were conducted in this study to investigate the fire performance of axially loaded gypsum plasterboard and steel sheathed LSF walls made with web-stiffened studs. The results revealed that compared to the commonly used lipped channel stud, the web-stiffened stud is capable of withstanding a 57% greater axial compression load, yet yield the same fire resistance level (FRL), when sheathed only with two layers of gypsum plasterboard. Under the selected load ratio, the addition of steel sheathing caused only marginal improvements in the stud temperature development, resulting in minor improvements to the FRL of load bearing walls. However, the axial load bearing capacity improvement caused by the inclusion of steel sheathing allowed the web-stiffened stud to withstand a 10% greater axial compression load compared to the plasterboard only wall.
Highlights Investigated the effect of steel and plasterboard sheathing on the fire performance of web-stiffened stud walls. Web-stiffened studs were able to retain their higher load bearing capacity even in fire. Steel sheathing did not alter the stud temperature development significantly. Steel sheathing improved the fire resistance marginally due to the opening-up of sheathing joints. Steel sheathing allowed web-stiffened studs to withstand greater axial loads in fire than lipped channels.
Full-scale fire resistance tests of steel and plasterboard sheathed web-stiffened stud walls
Dias, Yomal (Autor:in) / Mahendran, Mahen (Autor:in) / Poologanathan, Keerthan (Autor:in)
Thin-Walled Structures ; 137 ; 81-93
19.12.2018
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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