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Cyclic behaviour of external diaphragm joint to CHS column with built-in replaceable links
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Khador, Majd and Chan, Tak-Ming (2016) Cyclic behaviour of external diaphragm joint to CHS column with built-in replaceable links. Steel Construction - Design and Research, 9 (4). pp. 331-338. doi:10.1002/stco.201610040 ISSN 1867-0520.
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Official URL: https://doi.org/10.1002/stco.201610040
Abstract
A series of full-scale laboratory experiments was conducted to investigate the cyclic behaviour of an external diaphragm joint between a steel I-beam and a circular hollow section column. The joint incorporated two diaphragm plates (DPs) welded to the column external wall and bolted to the flanges of the beam using tapered cover plates (TCPs). The joint was designed to limit yielding and plastic hinging to the TCPs whilst the other joint components remained elastic. This is for the joint to qualify for the use in structures classified in the Damage Control Structural Performance range according to FEMA-356. Two parameters related to the TCPs were investigated in this paper; steel grade and bolt preloading force. The use of higher steel grades was found to impose undesirable higher strain demands in the beam and DPs and dissipate less energy than the joints with the lower grade. A controlled reduction in the bolts preloading force allowed connection slippage to occur beyond the serviceability limit, created an additional energy dissipation fuse and allowed rotation of the plastic hinge region to exceed 25mrad required for medium ductility class structures.
Item Type: | Journal Article | ||||||
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Alternative Title: | |||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
Journal or Publication Title: | Steel Construction - Design and Research | ||||||
Publisher: | Wilhelm Ernst und Sohn | ||||||
ISSN: | 1867-0520 | ||||||
Official Date: | 11 November 2016 | ||||||
Dates: |
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Volume: | 9 | ||||||
Number: | 4 | ||||||
Page Range: | pp. 331-338 | ||||||
DOI: | 10.1002/stco.201610040 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Related URLs: |
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