Lateral Resistance Reduction to Cold-Formed Steel-Framed Shear Walls under Various Fire Scenarios

Hoehler, Matthew S.; Andres, Blanca; Bundy, Matthew F.

doi:10.1061/(asce)st.1943-541x.0002610

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…Even the Mild Fire affected the postfire load bearing capacities of the walls by reducing contributions from the gypsum board on the lateral load‐bearing capacity. For further discussion of the influence of the fires on the load‐bearing capacities of the walls, the reader is referred to the NIST report and related publication . Velocities and pressure profiles inside the cavity of the walls can be found in the NIST report…”

Section: Resultsmentioning

confidence: 99%

“…For the strap walls, during the Mild Fire and Standards Fire, all temperatures on the unexposed side of the wall remained less than 139°C above the initial wall temperature ( Figure 16C load-bearing capacities of the walls, the reader is referred to the NIST report 16 and related publication. 17 Velocities and pressure profiles inside the cavity of the walls can be found in the NIST report. 16…”

Section: Thermal Response Of the Wallsmentioning

confidence: 99%

“…This paper focuses on the fire response of gypsum-sheet steel composite panel sheathed walls, oriented strand board (OSB) sheathed walls, and steel strap-braced walls; the structural response of the walls is reported separately. 17 Most the experiments were conducted using natural gas-fuelled fires of varying severity. Two of the fire loads represented characteristics of actual fires of mild and severe intensity, and the third fire load approximated a standard fire test.…”

Section: Introductionmentioning

confidence: 99%

“…In the second phase, 22 wall specimens were subjected sequentially to various combinations of cyclic shear deformation and fire load. This paper focuses on the fire response of gypsum‐sheet steel composite panel sheathed walls, oriented strand board (OSB) sheathed walls, and steel strap‐braced walls; the structural response of the walls is reported separately . Most the experiments were conducted using natural gas‐fuelled fires of varying severity.…”

Section: Introductionmentioning

confidence: 99%

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Fire resistance of cold‐formed steel framed shear walls under various fire scenarios

2019

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Summary This paper presents results of large‐scale experiments with varying levels of fire severity on lateral force‐resisting systems commonly used in cold‐formed steel framed buildings. Gypsum‐sheet steel composite panel sheathed walls, oriented strand board sheathed walls, and steel strap‐braced walls are examined. Postflashover fire conditions of two different intensities as well as 1 hour of fire exposure similar to that in a standard furnace qualification test are studied. Additionally, a full‐scale furnished kitchen fire experiment is conducted for comparison. The results highlight differences in the thermal response and subsequent performance of the walls as well as differing sensitives of the walls to pre‐damage, eg, that might occur during an earthquake. The results are part of a larger effort to provide fragilities for these wall systems in response to realistic fires for performance‐based design.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal Response Of the Wallsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fire resistance of cold‐formed steel framed shear walls under various fire scenarios

2019

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“…Andres et al 20 and Hoehler et al 21 investigated the effect of the fire severity on the behavior of lateral force-resisting systems commonly use in the construction of LSF walls, such as structural sheathing and steel strap bracing. When subjected to a standard fire condition similar to that of ASTM E119, 11 mild fire and severe fire conditions, the thermal response of the single-stud LSF specimens varied according with the lateral force-resisting system employed.…”

Section: Single-stud Lsf Wallsmentioning

confidence: 99%

Fire performance of non‐load‐bearing double‐stud light steel frame walls: Experimental tests, numerical simulation, and simplified method

et al. 2021

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SummaryDouble‐stud light steel frame (LSF) walls provide an enhanced insulation performance when exposed to fire conditions. However, the behavior of different configurations of such assemblies under fire is not well understood. Thus, this study aimed to assess the fire resistance of non‐load‐bearing double‐stud LSF walls subjected to ISO834 standard fire. The walls were lined with one or two type F gypsum plasterboards on each side, using cavity uninsulated or insulated with ceramic fiber. The experimental tests revealed that a wider cavity slows the heat transfer through the cross‐section, delaying the temperature rise on the unexposed surfaces. The use of ceramic fiber insulation substantially increases the fire resistance of the wall and when the cavity is partially filled with this material, if the blanket is placed towards the exposed side, enhanced insulation fire resistance is achieved. Based on the finite element method, a numerical validation was conducted using a special hybrid approach that used experimental temperature values inside the cavities or insulation blankets. This approximation was essential to improve the numerical results. Also, the employment of an air layer, located at specific regions of the models, helped to improve the numerical results, introducing an extra thermal resistance. A new simplified approach was proposed based on the improved design model available in the literature, and the results obtained are consistent with the experimental results. The predicted insulation fire resistance of the numerical and simplified methods agreed well with the experimental results and useful information is supplied to support further numerical and experimental studies.

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Post-fire Seismic Performance of Low-Yielding-Steel Plate Shear Wall Systems

Benvidi,

Mohammadi Dehcheshmeh,

Safari

et al. 2023

Int J Civ Eng

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Lateral Resistance Reduction to Cold-Formed Steel-Framed Shear Walls under Various Fire Scenarios

Cited by 6 publications

References 11 publications

Fire resistance of cold‐formed steel framed shear walls under various fire scenarios

Fire resistance of cold‐formed steel framed shear walls under various fire scenarios

Fire performance of non‐load‐bearing double‐stud light steel frame walls: Experimental tests, numerical simulation, and simplified method

Post-fire Seismic Performance of Low-Yielding-Steel Plate Shear Wall Systems

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