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Influence of seat angles on the behaviour of cold-formed steel concrete composite joints

This paper presents an experimental study on cold-formed steel (CFS) concrete composite joints, with and without seat angles, to investigate their structural behaviour and determine the influence of seat angle on this kind of connection. These CFS-concrete composite joints were made up of a cold-for...

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Main Authors:	Firdaus, M., Saggaff, A., Md. Tahir, M., Aghlara, R., Sulaiman, A., Aminuddin, K., Ngian, S. P., Ali Salih, M. N.
Format:	Article
Published:	Elsevier Ltd. 2020
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/93997/ http://www.dx.doi.org/10.1016/j.jcsr.2020.106246
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id	my.utm.93997
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spelling	my.utm.939972022-02-28T13:16:51Z http://eprints.utm.my/id/eprint/93997/ Influence of seat angles on the behaviour of cold-formed steel concrete composite joints Firdaus, M. Saggaff, A. Md. Tahir, M. Aghlara, R. Sulaiman, A. Aminuddin, K. Ngian, S. P. Ali Salih, M. N. TA Engineering (General). Civil engineering (General) This paper presents an experimental study on cold-formed steel (CFS) concrete composite joints, with and without seat angles, to investigate their structural behaviour and determine the influence of seat angle on this kind of connection. These CFS-concrete composite joints were made up of a cold-formed steel (CFS) connection consisting of two lipped CFS C-channels (bolted back-to-back as a beam and column with a trough plate or gusset plate), a composite slab (comprising a reinforced concrete slab with profiled CFS deck, and bolted shear connectors). In the literature review, the CFS-concrete composite beams and composite slabs were found to have been investigated experimentally and analytically in several studies but little attention has been paid to CFS-concrete composite joints. This is the reason for the current investigation on these kinds of composite joints. Six full-scale specimens of composite joints, three bare joints and three seat-angle joints, were evaluated experimentally by isolated joint tests, in which a one-point load was monotonically applied to the beams. The responses of the specimens were recorded by measuring instruments: i.e. five LVDTs, two inclinometers, and five strain gauges. The results obtained were used to provide moment-rotation relationships of the connections, which were necessary for quantifying the key characteristics of the connections. The three linear moment-rotation responses of the tested composite joints showed that adding the seat angles to the CFS-concrete composite joints increases both their moment resistance and rotational stiffness (by 8% and 21%, respectively), and reduces the rotation capacity (by 17%), on average. Furthermore, it was observed that the behaviour of these types of joints tends to transform from partial strength to full strength by adding a seat angle. Elsevier Ltd. 2020-10 Article PeerReviewed Firdaus, M. and Saggaff, A. and Md. Tahir, M. and Aghlara, R. and Sulaiman, A. and Aminuddin, K. and Ngian, S. P. and Ali Salih, M. N. (2020) Influence of seat angles on the behaviour of cold-formed steel concrete composite joints. Journal of Constructional Steel Research, 173 . ISSN 0143-974X http://www.dx.doi.org/10.1016/j.jcsr.2020.106246 DOI: 10.1016/j.jcsr.2020.106246
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Firdaus, M. Saggaff, A. Md. Tahir, M. Aghlara, R. Sulaiman, A. Aminuddin, K. Ngian, S. P. Ali Salih, M. N. Influence of seat angles on the behaviour of cold-formed steel concrete composite joints
description	This paper presents an experimental study on cold-formed steel (CFS) concrete composite joints, with and without seat angles, to investigate their structural behaviour and determine the influence of seat angle on this kind of connection. These CFS-concrete composite joints were made up of a cold-formed steel (CFS) connection consisting of two lipped CFS C-channels (bolted back-to-back as a beam and column with a trough plate or gusset plate), a composite slab (comprising a reinforced concrete slab with profiled CFS deck, and bolted shear connectors). In the literature review, the CFS-concrete composite beams and composite slabs were found to have been investigated experimentally and analytically in several studies but little attention has been paid to CFS-concrete composite joints. This is the reason for the current investigation on these kinds of composite joints. Six full-scale specimens of composite joints, three bare joints and three seat-angle joints, were evaluated experimentally by isolated joint tests, in which a one-point load was monotonically applied to the beams. The responses of the specimens were recorded by measuring instruments: i.e. five LVDTs, two inclinometers, and five strain gauges. The results obtained were used to provide moment-rotation relationships of the connections, which were necessary for quantifying the key characteristics of the connections. The three linear moment-rotation responses of the tested composite joints showed that adding the seat angles to the CFS-concrete composite joints increases both their moment resistance and rotational stiffness (by 8% and 21%, respectively), and reduces the rotation capacity (by 17%), on average. Furthermore, it was observed that the behaviour of these types of joints tends to transform from partial strength to full strength by adding a seat angle.
format	Article
author	Firdaus, M. Saggaff, A. Md. Tahir, M. Aghlara, R. Sulaiman, A. Aminuddin, K. Ngian, S. P. Ali Salih, M. N.
author_facet	Firdaus, M. Saggaff, A. Md. Tahir, M. Aghlara, R. Sulaiman, A. Aminuddin, K. Ngian, S. P. Ali Salih, M. N.
author_sort	Firdaus, M.
title	Influence of seat angles on the behaviour of cold-formed steel concrete composite joints
title_short	Influence of seat angles on the behaviour of cold-formed steel concrete composite joints
title_full	Influence of seat angles on the behaviour of cold-formed steel concrete composite joints
title_fullStr	Influence of seat angles on the behaviour of cold-formed steel concrete composite joints
title_full_unstemmed	Influence of seat angles on the behaviour of cold-formed steel concrete composite joints
title_sort	influence of seat angles on the behaviour of cold-formed steel concrete composite joints
publisher	Elsevier Ltd.
publishDate	2020
url	http://eprints.utm.my/id/eprint/93997/ http://www.dx.doi.org/10.1016/j.jcsr.2020.106246
_version_	1726791465576693760
score	13.211869

Influence of seat angles on the behaviour of cold-formed steel concrete composite joints

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