5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


STRUCTURAL BEHAVIOUR OF BLIND-BOLTED T-STUB TO OCTAGONAL TUBE CONNECTIONS USING NORMAL AND HIGH-STRENGTH STEELS

 

Fei Xu1 * and Tak-Ming Chan1

1 Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong

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DOI:10.18057/ICASS2018.P.152

ABSTRACT:

Structural behaviour of blind-bolted T-stub to octagonal tube connections is evaluated in this study experimentally and numerically. Two T-stub connections with different width-to-thickness ratios were tested under axial tensile loading. The finite element (FE) models were developed and validated against the test results. Based on the established FE models, the parametric studies were performed to further investigate the effects of the width-to-thickness ratio, material property and boundary condition on the failure mode, deformation and strength of the connections. In the test, the locally-enlarged tube hole and fracture of split-washers following with the pull out of the bolts were observed. The ultimate state of two test specimens was governed by the ultimate deformation limit, i.e. 3% of the width. Based on the parametric study, the with-to-thickness ratio could significantly affect the tube-wall deformation thus caused some effects on the failure mode and ultimate strength of the connection. Meanwhile the length of the octagonal tube had influence on the global bending deformation of the tube-wall. Furthermore, in the case of high-strength steel tube, the connection capacities were significantly improved for these failed at tube-wall yielding following with the split washer failure.

Keywords:

Blind-bolted connection; Octagonal tube; Width-to-thickness ratio; High strength steel

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IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM