Full-scale fire experiments on load-bearing cold-formed steel walls lined with different panels

Chen, Wei; Ye, Jihong; Bai, Yu; Zhao, Xiao Ling

doi:10.1016/j.jcsr.2012.07.031

Cited by 79 publications

(25 citation statements)

References 13 publications

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“…Cracking and spalling of gypsum board usually occur when it is exposed to fire because of its brittleness, which has been confirmed by test results in this study and related studies [5,9,10].…”

Section: Elements and Boundary Conditionssupporting

confidence: 84%

“…Alfawakhiri et al [2] summarized experimental and numerical studies on the fire performance of load-bearing light gauge steel frame (LSF) walls. Gerlich et al [3], Kodur and Sultan [4] and Chen et al [5] tested load-bearing light gauge steel frame walls exposed to fire. Feng et al [6] studied the thermal performance of LSF walls subjected to fire both experimentally and numerically.…”

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confidence: 99%

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Fire performance of non-load-bearing light-gauge slotted steel stud walls

Liu

Wang

et al. 2017

Journal of Constructional Steel Research

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link:http://openaccess.city.ac.uk/17768/ Link to published version: http://dx.Abstract Experimental and numerical studies on the performance of light-gauge slotted steel stud walls subjected to fire are presented in this paper. Four full-scale light-gauge slotted steel stud walls were tested under the ISO-834 standard fire loading. Temperatures at the location of exposed surface, unexposed surface, and cross section of steel studs were measured. Spalling of the heated gypsum board during testing was investigated. The major factors affecting the behavior of this type of wall, including the height of the web, layers of gypsum boards and use of mortar on unexposed surface, were studied.Based on the test results, a three-dimensional FE model of the light-gauge slotted steel stud wall was developed using ABAQUS to analyze its fire performance. The model was validated against experiments in this study and other related test data. The FE model was employed to conduct further parametric studies. Parameters include the spalling time of heated gypsum boards, the height of the web, rows of slots, and layers of gypsum boards. The effects of these key factors on the temperatures of the exposed surface, unexposed surface and studs are discussed.

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Section: Elements and Boundary Conditionssupporting

confidence: 84%

mentioning

confidence: 99%

Fire performance of non-load-bearing light-gauge slotted steel stud walls

Liu

Wang

et al. 2017

Journal of Constructional Steel Research

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“…The Foschi exponential model [10] can also be used to describe the load-displacement characteristic of the connection at room temperature, but it becomes inconvenient at elevated temperatures due to its irregular change in parameters. Based on the above prediction formulas for FmT, KeT, ΔmT and ΔuT, a simplified load-displacement model with the post-peak branch was developed for the screw connection at both ambient and elevated temperatures, as shown in Equation (13). The pre-peak branch of the load-displacement model was obtained by modifying the Ramberg-Osgood model [26].…”

Section: Load-displacement Model Of the Screw Connectionsmentioning

confidence: 99%

“…In mid-rise buildings, double layers of gypsum sheathing are necessary on both sides of load-bearing CFS walls to satisfy the fire resistance rating of at least 60 min [12][13][14]. The lateral resistance performance of CFS walls with double-layer gypsum sheathing on both sides has been shown to be different from that of walls with single-layer sheathing [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…According to the previous full-scale experiments [13], the loaded CFS wall assembly lined with double layers of gypsum plasterboard on both sides was subjected to the ISO834 fire exposure of 71 min, and the flexural deflection of steel studs increased rapidly towards the fire side at the final two minutes of fire exposure. Post-fire inspection showed that the fire-side gypsum plasterboard had good deformation compatibility with the CFS frame, and only few cracks were observed in the field of fire-side gypsum plasterboard.…”

Section: Introductionmentioning

confidence: 99%

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Design of Cold-Formed Steel Screw Connections with Gypsum Sheathing at Ambient and Elevated Temperatures

Chen

2016

Applied Sciences

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Load-bearing cold-formed steel (CFS) walls sheathed with double layers of gypsum plasterboard on both sides have demonstrated good fire resistance and attracted increasing interest for use in mid-rise CFS structures. As the main connection method, screw connections between CFS and gypsum sheathing play an important role in both the structural design and fire resistance of this wall system. However, studies on the mechanical behavior of screw connections with double-layer gypsum sheathing are still limited. In this study, 200 monotonic tests of screw connections with single-or double-layer gypsum sheathing at both ambient and elevated temperatures were conducted. The failure of screw connections with double-layer gypsum sheathing in shear was different from that of single-layer gypsum sheathing connections at ambient temperature, and it could be described as the breaking of the loaded sheathing edge combined with significant screw tilting and the loaded sheathing edge flexing fracture. However, the screw tilting and flexing fracture of the loaded sheathing edge gradually disappear at elevated temperatures. In addition, the influence of the loaded edge distance, double-layer sheathing and elevated temperatures is discussed in detail with clear conclusions. A unified design formula for the shear strength of screw connections with gypsum sheathing is proposed for ambient and elevated temperatures with adequate accuracy. A simplified load-displacement model with the post-peak branch is developed to evaluate the load-displacement response of screw connections with gypsum sheathing at ambient and elevated temperatures.

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Fire Protection Practices for FRP Components

2013

High Temperature Performance of Polymer Composites

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Full-scale fire experiments on load-bearing cold-formed steel walls lined with different panels

Cited by 79 publications

References 13 publications

Fire performance of non-load-bearing light-gauge slotted steel stud walls

Fire performance of non-load-bearing light-gauge slotted steel stud walls

Design of Cold-Formed Steel Screw Connections with Gypsum Sheathing at Ambient and Elevated Temperatures

Fire Protection Practices for FRP Components

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