Advanced Steel Construction

Vol. 4, No. 1, pp. 13-25 (2008)


CONCEPTIONS OF EQUIVALENT IMPERFECTIONS IN ANALYSIS OF STEEL FRAMES

 

A. Machowski 1 and I. Tylek 2,*

1 Assoc. Prof. D. Sc. Ph. D., Faculty of Civil Engineering,

Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow, Poland

2 M. Sc., Faculty of Civil Engineering,

Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow, Poland

* (Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

 

Received: 17 October 2006; Revised: 2 May 2007; Accepted: 22 June 2007

DOI:10.18057/IJASC.2008.4.1.2

 

ABSTRACT:

Bases of four different conceptions of the equivalent initial tilt utilized in elastic and post-elastic analyses of steel frames are under consideration. It turns out that conception and value of equivalent initial tilt depend on method of analysis and limit state conception. Reduction of initial tilt depending on number of columns per story is motivated if statistically based stationary gaussian random noise model of initial column tilt and bar-disk mechanical model of skeletal structure are applied.

 

Keywords:Steel frames, equivalent imperfection

 

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