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Fire Resistance of Hybrid Floor Based on Small-Scale Furnace Tests and Energy-Based Time Equivalent Approach

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Abstract

A novel hybrid floor, which was a prefabricated composite system infilled using polymers with hollow cores between its top and bottom steel plates, was previously developed for application in steel structures. In addition, the structural performance of the steel floor, including its bending capacity, floor vibration, and dynamic characteristics, were investigated. However, as the fire resistance performance of the hybrid floor had not been investigated, it was installed in actual buildings using insulating materials, which caused problems, such as a dirty workplace and additional work that prolonged the construction period. In this study, small-scale furnace tests, whose specimens have fewer variables in comparison with those of full-scale tests, were conducted instead of full-scale furnace tests to analyze the effects of various variables on the fire resistance performance of the hybrid floor. In fact, the heating curves obtained via the small-scale furnace tests were not similar those suggested by Korean Standards (KS). The energy-based time equivalent approach was applied to calibrate the results. Thus, the fire resistance ratings were estimated based on small-scale furnace tests via the energy-based time equivalent approach with respect to polymer thickness and aspect ratio, which were expressed using the lengths and widths of the specimens.

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Acknowledgements

This research was financially supported by the National Research Foundation of Korea (NRF-2017R1A2B3006531 and NRF-2018R1A4A1026027) and by grants (20AUDP-B100343-06 and 20AUDP-B121747-05) from the Architecture & Urban Development Research Program funded by the Ministry of Land, Infrastructure, and Transport of the Korean government. The authors are grateful to the authorities for their supports.

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Authors and Affiliations

  1. School of Civil, Environmental, and Architectural Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea

    Min Jae Park, Jaehoon Bae & Young K. Ju

  2. Technical Research Center, TechSquare Co., Ltd, 25 Banpo-daero, Seocho-gu, Seoul, 06710, Republic of Korea

    Jaeho Ryu

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  1. Min Jae Park
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  2. Jaehoon Bae
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Correspondence to Young K. Ju.

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Park, M., Bae, J., Ryu, J. et al. Fire Resistance of Hybrid Floor Based on Small-Scale Furnace Tests and Energy-Based Time Equivalent Approach. Int J Steel Struct 20, 1811–1821 (2020). https://doi.org/10.1007/s13296-020-00353-1

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  • DOI: https://doi.org/10.1007/s13296-020-00353-1

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