Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment

The authors’ companion paper presented the observations and results from two one-forth scale composite beam-slab systems tested in fire. This paper introduces the numerical assessment based on these experimental results. A non-linear finite element model is developed using ABQUS/Explicit to simulate...

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Main Authors: Nguyen, Tuan Trung, Tan, Kang Hai
Other Authors: School of Civil and Environmental Engineering
Format: Conference or Workshop Item
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96922
http://hdl.handle.net/10220/11884
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-969222019-12-06T19:36:40Z Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment Nguyen, Tuan Trung Tan, Kang Hai School of Civil and Environmental Engineering Applications of Structural Fire Engineering (2013) The authors’ companion paper presented the observations and results from two one-forth scale composite beam-slab systems tested in fire. This paper introduces the numerical assessment based on these experimental results. A non-linear finite element model is developed using ABQUS/Explicit to simulate the specimen behaviour. Material properties at elevated temperatures are assumed to vary according to EN 1994-1-2 (2005). The FE model was first validated with the test results, and then was used to examine the effect of unprotected interior beams on tensile membrane action. It is found that the numerical predictions agree well with the test results. The presence of interior beams significantly affects the magnitude as well as the distribution of stress of the slab elements, i.e. mesh reinforcement and concrete slab. The part with maximum tensile force is not necessarily at the slab centre. It may be part of the concrete slab above the edge beams. Shortcomings of the numerical model in predicting the failure modes are indicated. 2013-07-18T06:56:23Z 2019-12-06T19:36:40Z 2013-07-18T06:56:23Z 2019-12-06T19:36:40Z 2013 2013 Conference Paper Nguyen, T.-T., & Tan, K.-H. (2013). Effect of Unprotected Interior Beams on Membrane Behaviour of Composite Floor Systems in Fire. II: Numerical Assessment. Applications of Structural Fire Engineering, 19-20 April 2013. https://hdl.handle.net/10356/96922 http://hdl.handle.net/10220/11884 172474 en © 2013 European Cooperation in the field of Scientific and Technical Research Office.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description The authors’ companion paper presented the observations and results from two one-forth scale composite beam-slab systems tested in fire. This paper introduces the numerical assessment based on these experimental results. A non-linear finite element model is developed using ABQUS/Explicit to simulate the specimen behaviour. Material properties at elevated temperatures are assumed to vary according to EN 1994-1-2 (2005). The FE model was first validated with the test results, and then was used to examine the effect of unprotected interior beams on tensile membrane action. It is found that the numerical predictions agree well with the test results. The presence of interior beams significantly affects the magnitude as well as the distribution of stress of the slab elements, i.e. mesh reinforcement and concrete slab. The part with maximum tensile force is not necessarily at the slab centre. It may be part of the concrete slab above the edge beams. Shortcomings of the numerical model in predicting the failure modes are indicated.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Nguyen, Tuan Trung
Tan, Kang Hai
format Conference or Workshop Item
author Nguyen, Tuan Trung
Tan, Kang Hai
spellingShingle Nguyen, Tuan Trung
Tan, Kang Hai
Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment
author_sort Nguyen, Tuan Trung
title Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment
title_short Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment
title_full Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment
title_fullStr Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment
title_full_unstemmed Effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. II : numerical assessment
title_sort effect of unprotected interior beams on membrane behaviour of composite floor systems in fire. ii : numerical assessment
publishDate 2013
url https://hdl.handle.net/10356/96922
http://hdl.handle.net/10220/11884
_version_ 1681037781884731392