Techno Press
Techno Press

Structural Engineering and Mechanics
  Volume 24, Number 4, November10 2006 , pages 463-478
DOI: https://doi.org/10.12989/sem.2006.24.4.463
 


Feasibility study for blind-bolted connections to concrete-filled circular steel tubular columns
H. M. Goldsworthy and A. P. Gardner

 
Abstract
    The design of structural frameworks for buildings is constantly evolving and is dependent on regional issues such as loading and constructability. One of the most promising recent developments for low to medium rise construction in terms of efficiency of construction, robustness and aesthetic appearance utilises concrete-filled steel tubular sections as the columns in a moment-resisting frame. These are coupled to rigid or semi-rigid connections to composite steel-concrete beams. This paper includes the results of a pilot experimental programme leading towards the development of economical, reliable connections that are easily constructed for this type of frame. The connections must provide the requisite strength, stiffness and ductility to suit gravity loading conditions as well as gravity combined with the governing lateral wind or earthquake loading. The aim is to develop connections that are stiffer, less expensive and easier to construct than those in current use. A proposed fabricated T-stub connection is to be used to connect the beam flanges and the column. These T-stubs are connected to the column using
 
Key Words
    concrete-filled steel tubes; blind bolts with extensions; moment-resisting composite connection.
 
Address
Department of Civil and Environmental Engineering, University of Melbourne, Parkville, 3010, Australia
 

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