The effective length factor of columns in steel framed buildings with end restraint effects

Adel Slimani; Toufik Belaid; Messaoud Saidani; Fatiha Ammari; Redouane Adman

doi:10.1016/j.istruc.2023.105521

The effective length factor of columns in steel framed buildings with end restraint effects

Adel Slimani, Toufik Belaid, Messaoud Saidani, Fatiha Ammari, Redouane Adman

Clean Growth and Future Mobility Management and Support

University of Science and Technology Houari Boumediene

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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Abstract

The present article presents a practical method to determine the effective length factor of multi-storey frames based on a rigorous analytical approach applied to a basic model judiciously parameterized in terms of geometry and load arrangement. The adopted novel model considers the different interactions and effects of varying the boundary conditions at the ends of the columns and beams that are connected to the column under consideration. Subsequently, parametric studies are presented to evaluate the influence of the boundary conditions at the ends of the columns located above and below the column under consideration on the effective length factor value K. It is worth specifying that these variations are considered for the braced and unbraced frame cases. A comparative study revealed substantial differences between the values of the effective length factors thus obtained and those calculated using the method recommended by Eurocode 3 and CCM97. The proposed charts and relating to the effective length factor value K associated with the double cross model adopted by Eurocode 3 and CCM97, are of practical significance as they are very useful in the conception and design of such frames.

Original language	English
Article number	105521
Number of pages	15
Journal	Structures
Volume	58
Early online date	8 Nov 2023
DOIs	https://doi.org/10.1016/j.istruc.2023.105521
Publication status	Published - 1 Dec 2023

Bibliographical note

© 2023, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it.

Keywords

Effective length factor
Eurocode 3
Buckling of multi-storey frames
Double cross model

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10.1016/j.istruc.2023.105521

Saidani2023AAMAccepted author manuscript, 2.52 MBLicence: CC BY-NC-ND

Cite this

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abstract = "The present article presents a practical method to determine the effective length factor of multi-storey frames based on a rigorous analytical approach applied to a basic model judiciously parameterized in terms of geometry and load arrangement. The adopted novel model considers the different interactions and effects of varying the boundary conditions at the ends of the columns and beams that are connected to the column under consideration. Subsequently, parametric studies are presented to evaluate the influence of the boundary conditions at the ends of the columns located above and below the column under consideration on the effective length factor value K. It is worth specifying that these variations are considered for the braced and unbraced frame cases. A comparative study revealed substantial differences between the values of the effective length factors thus obtained and those calculated using the method recommended by Eurocode 3 and CCM97. The proposed charts and relating to the effective length factor value K associated with the double cross model adopted by Eurocode 3 and CCM97, are of practical significance as they are very useful in the conception and design of such frames.",

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The effective length factor of columns in steel framed buildings with end restraint effects

Abstract

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Keywords

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