Influence of Seat Angles on The Behaviour of Cold-formed Steel Concrete Composite Joints

Firdaus, Muhammad and Saggaff, Anis and Tahir, Mahmood Md. and Aghlara, Reza and Sulaiman, Arizu and Aminuddin, K. M. and Ngian, Shek Poi and Salih, Musab Nimir Ali (2020) Influence of Seat Angles on The Behaviour of Cold-formed Steel Concrete Composite Joints. Journal of Constructional Steel Research, 173 (106246).

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Abstract

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.

Item Type:	Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials > TA479.S7.O4 Stainless steel. Metal-cutting. Steel alloys
Divisions:	03-Faculty of Engineering > 22101-Civil Engineering (S2)
Depositing User:	Prof Anis Saggaff
Date Deposited:	12 Oct 2020 09:07
Last Modified:	12 Oct 2020 09:07
URI:	http://repository.unsri.ac.id/id/eprint/36640

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