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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/158864
- Behaviour of blind-bolted moment connection to a concrete-filled circular column
- Yao, H.; Goldsworthy, H. M.; Gad, E. F.
- This paper presents the results of an experimental study that investigates the strength and stiffness of a blind-bolted moment connection to a concrete-filled circular column. In this beam-to-column connection, double built-up tees are bolted to the circular hollow section and to the top and bottom flanges of a universal steel beam. In order to limit the out-of-plane deformations of the thin tube wall under tension, cogged extensions are provided to the blind bolts, hence improving the rigidity of the connection. The advantage of this type of moment connection is easy fabrication and installation compared to welded moment connections using external and internal diaphragms. The experimental setup, connection details and material properties are described briefly. The results and observations are presented and key aspects of behaviour are discussed. The detailed response of the tested connection is evaluated in terms of the moment-rotation relationship, failure mode, and displacement distributions within critical components. A simplified component model is developed to predict the initial stiffness of this blind-bolted moment connection. The joint is divided into basic elements in tension and compression zones which are simulated by individual springs with a defined force-displacement relationship. The tension zone stiffness comprises blind bolt stiffness, curved endplate stiffness, cogged extension stiffness, membrane stiffness of circular hollow section, bearing stiffness of the tube wall around the bolt hole, and stiffness of flange plate connection. The compression zone stiffness comprises stiffness of curved endplate and tube wall bearing on concrete core and stiffness of concrete in the compression zone. By assembling the characteristics of individual components, the strength and stiffness of the connection can be determined in a simple way for routine design.
- Publication type
- Conference paper
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences
- Proceedings of the 4th International Conference on Steel and Composite Structures (ICSCS'10), Sydney, New South Wales, Australia, 21-23 July 2010 / Brian Uy, Zhong Tao, Fidelis Mashiri, Xinqun Zhu, Olivia Mirza and Ee Loon Tan (eds.), pp. 731-736
- Publication year
- Research Publishing
- Publisher URL
- Copyright © 2010 ICSCS Organisers. Published by Research Publishing.