5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

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


CRITICAL INITIAL GEOMETRIC IMPERFECTION AND ADVANCED BEAM COLUMN ELEMENT FOR DIRECT ANALYSIS METHOD OF TAPERED I-SECTIONS

 

Rui BAI 1, Si-Wei LIU 2* Lei ZHAO 1 and Siu-Lai CHAN 1

1 Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China

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2 School of Civil Engineering, Sun Yat-Sen University, Guangzhou, Guangdong, China

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DOI:10.18057/ICASS2018.P.167

ABSTRACT:

For highly geometrically nonlinear problems, the structural characterizes including the effects of member initial imperfections, the interactions between adjacent members and the buckling can hardly be captured with the linear analysis approach. The prevalent design methods, which are usually developed based on empirical assumptions, cannot correctly reflect the second-order effects of tapered members. Therefore, to accurately simulate the tapered members, this paper proposed an advanced analysis method for tapered I sections based on the direct analysis method. The function representing the critical initial geometric imperfection shape of tapered columns is presented, and the unfavorable effect is incorporated in the advanced tapered beam-column element formulation derived in this paper. The tapered element with an arbitrarily located internal hinge including 12 independent degrees of freedom is introduced for the state-of-the-art design method. Examples verifying the accuracy and efficiency of the proposed formulation are presented. The current research is believed to be a great contribution to the modern design of non-prismatic members.

Keywords:

Direct analysis method; Tapered members; Initial geometric imperfection; Beam-column element;

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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