5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

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


NUMERICAL STUDY OF STRUCTURAL STEEL CONTINUOUS BEAMS WITH TUBULAR CROSS-SECTIONS

 

Xiang Yun 1* and Leroy Gardner 1

1 Department of Civil and Environmental Engineering, Imperial College London, UK

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DOI:10.18057/ICASS2018.P.086

ABSTRACT:

The structural behaviour and design of hot-rolled and cold-formed steel continuous beams with square and rectangular hollow sections are studied in this paper, with a focus on the beneficial effects of material strain hardening and moment redistribution. Finite element (FE) models were first developed and validated against existing test results, upon which parametric studies were carried out to expand the available structural performance data over a range of cross-section geometries, cross-section slendernesses, steel grades and loading conditions. The experimental results, together with the parametric numerical results, were then used to evaluate the accuracy of the design provisions of EN 1993-1-1 as well as the continuous strength method (CSM) for indeterminate structures, the latter of which is extended in scope in the present study. It was shown that the current provisions of EN 1993-1-1 for the design of continuous beams are rather conservative, while the proposed CSM yields a higher level of accuracy and consistency, due to its rational consideration of both strain hardening at the cross-sectional level and moment redistribution at the global system level.

Keywords:

Cold-formed tubular sections; Continuous beams; Continuous strength method; Hot-rolled tubular sections; Numerical modelling; Plastic design

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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