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International Journal of Steel Structures

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19-01-2020

Experimental and Analytical Behavior of Square CFDST Column Blind Bolted to Steel Beam Connections

Authors: Jingfeng Wang, Lei Guo

Published in: International Journal of Steel Structures | Issue 2/2020

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Abstract

In recent years, steel or composite beam-column connections adopting blind fasteners have drawn increasing praise due to the rapid development of assembled steel structures. However, limited researches have paid attention to the experimental and analytical behavior of concrete filled double-skin steel tube (CFDST) column blind bolted joints. For investigating the structural performance and seismic behavior of this type of connection, cyclic tests on blind bolted joints to square CFDST columns were carried out to explore the effects of column hollow ratio and end plate type. Finite element analytical modelling of the semi-rigid joint was performed considering complex contact interactions and material models. Good agreement between the test and analytical results was observed in terms of the failure modes and the hysteretic behavior. Substantial parametric analyses were conducted on typical CFDST column connections to observe the influence of parameters including strength of steel tube, column hollow ratio and bolt pretension force. Furthermore, certain constructional measures commonly employed in engineering practice were also discussed. It was concluded that the CFDST column blind bolted to the steel beam joint has favorable seismic behavior and is feasible for application in high-intensity earthquake regions.

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Title: Experimental and Analytical Behavior of Square CFDST Column Blind Bolted to Steel Beam Connections
Authors: Jingfeng Wang
Lei Guo
Publication date: 19-01-2020
Publisher: Korean Society of Steel Construction
Published in: International Journal of Steel Structures / Issue 2/2020
Print ISSN: 1598-2351
Electronic ISSN: 2093-6311
DOI: https://doi.org/10.1007/s13296-020-00310-y

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