Effect of second order analysis on the drift reliability of steel buildings

Baji, H., Ronagh, H. R., Shayanfar, M. A. and Barkhordari, M. A. (2012) Effect of second order analysis on the drift reliability of steel buildings. Advances in Structural Engineering, 15 11: 1989-1999. doi:10.1260/1369-4332.15.11.1989

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Author Baji, H.
Ronagh, H. R.
Shayanfar, M. A.
Barkhordari, M. A.
Title Effect of second order analysis on the drift reliability of steel buildings
Journal name Advances in Structural Engineering   Check publisher's open access policy
ISSN 1369-4332
Publication date 2012-11
Sub-type Article (original research)
DOI 10.1260/1369-4332.15.11.1989
Volume 15
Issue 11
Start page 1989
End page 1999
Total pages 11
Place of publication Brentwood, Essex, United Kingdom
Publisher Multi-Science Publishing
Collection year 2013
Language eng
Formatted abstract
Serviceability limit state is an important limit state in the reliability analysis of building structures. One of the serviceability limit states to consider in the design is the lateral displacement or drift check. Due to the uncertainties in the cross-sectional dimensions and the mechanical properties of materials, the lateral drift of structures is a random variable. Second order effects also amplify the lateral displacements and are a function of gravity loads and lateral displacements. In this study, the drift reliability of steel frames and the effects of second order analysis are investigated using geometric nonlinear analysis and Monte Carlo Simulation technique. Results show that for the drift limit state that does not include P-Δ effect, reliability indices do not depend on return period of the load cmbination, the wind to gravity load ratio or the drift limits. On the other hands, for the limit state in which P-Δ effect is incorporated, in low wind to gravity range, the reliability indices are sensitive, and could change dramatically. The limit state that does not have the P-Δ effect is the lower bound of load combination with 50 year return period, but is the upper bound for the other load combination with 20 year return period. Furthermore, the value of drift limit affects the reliability indices for the limit states that include P-Δ effect.
Keyword Safety
Reliability index
Monte Carlo Simulation
Story drift
Wind Loading
Load combinations
Design codes
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2013 Collection
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Created: Sun, 06 Jan 2013, 00:32:50 EST by System User on behalf of School of Civil Engineering