Abstract

In this paper, a new type of rectangular double-opening concrete filled sandwich steel tube (DCFSST) is developed. This new type of composite section can keep the inner steel tubes away from the cross-sectional centroid axis through the reasonable configuration. In order to assess the structural behaviour of rectangular DCFSST members, a pilot research on stub columns under axial compression was conducted. A total of 10 specimens, including 5 with double steel square hollow sections (SHSs) and 5 with double steel circular hollow sections (CHSs), were tested with the various offset rate of inner tube (

Publication Type:	Article
Additional Information:	© 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher Keywords:	DCFSST stub columns; Rectangular section; Axial compression; Tests; FE model; Simplified formulae
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction
Departments:	School of Science & Technology > Engineering

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