Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/34087
Title: Effective bending stiffness of steel-concrete composite columns with multiple encased steel profiles
Authors: Chrzanowski, M.
Odenbreit, C.
Obiala, R.
Bogdan, T.
DEGEE, Herve 
Issue Date: 2021
Publisher: ELSEVIER SCI LTD
Source: JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, 181 , (Art N° 106607)
Abstract: For the structural analysis of steel-concrete composite columns, Eurocode 4 allows only cross-sections with one implemented steel profile and double symmetry. However, there are worldwide more and more examples of composite columns with more than one embedded steel profiles, like for example in the International Financial Center of Hong Kong and the Ping Anh Finance Center in Shenzhen. The common practice of analysis of such columns is to use the simple Euler-Bernoulli beam theory to describe the global behaviour. But recently, performed tests reveal that the resulting deformations exceed largely the deformations predicted by the aforementioned analytical model. The presented contribution shows a modified approach to analyse the stiffness of composite columns with multiple encased steel profiles. Based on the performed laboratory tests and numerical simulations with the finite element code Abaqus (R), a new method to determine the effective stiffness is proposed. It combines a modified Timoshenko beam theory with embedded Vierendeel truss model & ndash; the VTBM model. This modified method leads to a reduced value of the effective stiffness, more realistic deformations at Ultimate Limit State and thus to a more realistic assessment of the Euler's critical buckling load. (c) 2021 Elsevier Ltd. All rights reserved.
Notes: Chrzanowski, M (corresponding author), ArcelorMittal, ArcelorMittal Steligence, Warsaw, Poland.
maciej.chrzanowski@arcelormittal.com
Other: Chrzanowski, M (corresponding author), ArcelorMittal, ArcelorMittal Steligence, Warsaw, Poland. maciej.chrzanowski@arcelormittal.com
Keywords: High-rise buildings;Steel-concrete composite columns;Fully embedded composite columns with multiple encased steel profiles;Shear transfer;Effective stiffness;Buckling load
Document URI: http://hdl.handle.net/1942/34087
ISSN: 0143-974X
e-ISSN: 1873-5983
DOI: 10.1016/j.jcsr.2021.106607
ISI #: WOS:000643635500006
Rights: © 2021 Elsevier Ltd. All rights reserved.
Category: A1
Type: Journal Contribution
Validations: ecoom 2022
Appears in Collections:Research publications

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