Volume 10, Issue 4 (2010)
MCEJ 2010, 10(4): 57-69 |
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Lotfollahi-Yaghin M, Negin M. Effect of Random Initial Crookedness of Members on
Reliability of Steel Frames. MCEJ 2010; 10 (4) :57-69
URL: http://mcej.modares.ac.ir/article-16-6754-en.html
URL: http://mcej.modares.ac.ir/article-16-6754-en.html
Abstract: (7284 Views)
Abstract:
The effect of two types of common initial geometric imperfections on the reliability of steel
frames was investigated. These imperfections are the coordinates of connection nodes and
crookedness of members. Most of the finite element reliability analyses in the past
haveneglect this source of uncertainty. For this purpose, static non-linear pushover structural
analysis was used in the present work from which reliabilities were estimated based on the
FORM and Monte Carlo sampling methods. Furthermore, to investigate the importance of
uncertain parameters, reliability sensitivity analysis was performed by the use of direct
differentiation method, which was implemented in the object oriented framework of
OpenSees software. It was demonstrated that some of these geometric imperfections have
significant influence on the reliability assessment of steel frames.
Received: 2008/08/11 | Accepted: 2009/12/12 | Published: 2011/03/2
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