The effect of load-induced thermal strain on flat slab behaviour at elevated temperatures

Rwayda Kh S. Al Hamd; Martin Gillie; Holly Warren; Giacomo Torelli; Tim Stratford; Yong Wang

doi:10.1016/j.firesaf.2018.02.004

The effect of load-induced thermal strain on flat slab behaviour at elevated temperatures

Rwayda Kh S. Al Hamd^*
, Martin Gillie
, Holly Warren
, Giacomo Torelli
, Tim Stratford
, Yong Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Several recent sets of experimental results on the punching shear behaviour of flat slabs in fire have produced apparently anomalous deflections results, where the slab deflections on heating are in the opposite direction to that expected if arising from free thermal expansion. Using numerical analysis, this paper shows that the results are explained by load-induced thermal strains (LITS). Using two independent modelling approaches, the profound effect of LITS on deflection behaviour is demonstrated. The findings have implications for the design of flat-slab structures to resist fire because ignoring LITS may result in non-conservative design predictions.

Original language	English
Pages (from-to)	12-18
Number of pages	7
Journal	Fire Safety Journal
Volume	97
Early online date	2 Mar 2018
DOIs	https://doi.org/10.1016/j.firesaf.2018.02.004
Publication status	Published - 30 Apr 2018
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure
SDG 11 Sustainable Cities and Communities
SDG 13 Climate Action

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10.1016/j.firesaf.2018.02.004

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title = "The effect of load-induced thermal strain on flat slab behaviour at elevated temperatures",

abstract = "Several recent sets of experimental results on the punching shear behaviour of flat slabs in fire have produced apparently anomalous deflections results, where the slab deflections on heating are in the opposite direction to that expected if arising from free thermal expansion. Using numerical analysis, this paper shows that the results are explained by load-induced thermal strains (LITS). Using two independent modelling approaches, the profound effect of LITS on deflection behaviour is demonstrated. The findings have implications for the design of flat-slab structures to resist fire because ignoring LITS may result in non-conservative design predictions.",

author = "\{Al Hamd\}, \{Rwayda Kh S.\} and Martin Gillie and Holly Warren and Giacomo Torelli and Tim Stratford and Yong Wang",

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T1 - The effect of load-induced thermal strain on flat slab behaviour at elevated temperatures

AU - Al Hamd, Rwayda Kh S.

AU - Gillie, Martin

AU - Warren, Holly

AU - Torelli, Giacomo

AU - Stratford, Tim

AU - Wang, Yong

PY - 2018/4/30

Y1 - 2018/4/30

N2 - Several recent sets of experimental results on the punching shear behaviour of flat slabs in fire have produced apparently anomalous deflections results, where the slab deflections on heating are in the opposite direction to that expected if arising from free thermal expansion. Using numerical analysis, this paper shows that the results are explained by load-induced thermal strains (LITS). Using two independent modelling approaches, the profound effect of LITS on deflection behaviour is demonstrated. The findings have implications for the design of flat-slab structures to resist fire because ignoring LITS may result in non-conservative design predictions.

AB - Several recent sets of experimental results on the punching shear behaviour of flat slabs in fire have produced apparently anomalous deflections results, where the slab deflections on heating are in the opposite direction to that expected if arising from free thermal expansion. Using numerical analysis, this paper shows that the results are explained by load-induced thermal strains (LITS). Using two independent modelling approaches, the profound effect of LITS on deflection behaviour is demonstrated. The findings have implications for the design of flat-slab structures to resist fire because ignoring LITS may result in non-conservative design predictions.

U2 - 10.1016/j.firesaf.2018.02.004

DO - 10.1016/j.firesaf.2018.02.004

M3 - Article

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SN - 0379-7112

VL - 97

SP - 12

EP - 18

JO - Fire Safety Journal

JF - Fire Safety Journal

ER -

The effect of load-induced thermal strain on flat slab behaviour at elevated temperatures

Abstract

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