Concrete-filled tubular (CFT) columns have been widely adopted in building
structures owing to their superior structural performance, such as enhanced load
bearing capacity, compared to hollow tubes. Circular, square and rectangular
hollow sections are most commonly used in the past few decades. Elliptical
hollow section (EHS) available recently is regarded as a new cross-section for
the CFT columns due to its attractive appearance, optional orientation either on
major axis or minor axis and improved structural efficiency.
The state of the research in terms of elliptical columns, tubular joints between
EHSs and connections with CFT columns, etc., are reviewed in this thesis,
showing a lack of investigations on EHSs, especially on beam to elliptical column
connections which are essential in framed structures.
The structural behaviour of elliptical column to I-beam connections under bending
is studied in this thesis to fill the research gap. Overall ten specimens with various
joint assemblies were tested to failure to highlight the benefits of adopting
concrete infill and stiffeners in the columns.
A three-dimensional finite element model developed by using ABAQUS software
is presented and verified against obtained experimental results, which shows
acceptable accuracy and reliability in predicting failure modes of the connections
and their moment capacities. Parametric studies were performed to access the
main parameters that affecting the bending behaviour of the connections. A
simple hand calculation method in terms of ultimate moment capacity is proposed
according to experiments conducted for connections with concrete-filled columns.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/16022 |
| Date | January 2017 |
| Creators | Yang, Jie |
| Contributors | Lam, Dennis, Dai, Xianghe, Sheehan, Therese |
| Publisher | University of Bradford, Faculty of Engineering and Informatics |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Thesis, doctoral, PhD |
| Rights | <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. |
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