Effective bending stiffness of steel-concrete composite columns with multiple encased steel profiles. (LAJ21.B)

Analysis; Buckling load; Effective stiffness; Fully embedded composite columns with multiple encased steel profiles; High-rise buildings; Numerical analysis; Shear transfer; Skyscrapers; Steel; Steel-concrete composite columns; Tall buildings

Abstract :

[en] 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®, a new method to determine the effective stiffness is proposed. It combines a modified Timoshenko beam theory with embedded Vierendeel truss model – 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. •Columns used in high-rise buildings are often out of the scope of design codes.•Separated steel cores in a column's cross-section leads to an innovative hypothesis.•Transition from the Euler-Bernoulli beam theory towards Vierendeel truss behaviour.•Vierendeel-like beam behaviour confirmed in tests and finite element simulations.•Proposed novel analytical model allows for a more accurate stability analysis.

Disciplines :

Civil engineering

Author, co-author :

Chrzanowski, Maciej

Odenbreit, Christoph ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)

Obiala, Renata

Bogdan, Teodora

Degée, Hervé

External co-authors :

yes

Language :

English

Title :

Effective bending stiffness of steel-concrete composite columns with multiple encased steel profiles. (LAJ21.B)

Publication date :

2021

Journal title :

Journal of Constructional Steel Research

ISSN :

0143-974X

Publisher :

Elsevier Ltd

Volume :

181

Pages :

106607-

Peer reviewed :

Peer reviewed

Data Set :

10.1016/j.jcsr.2021.106607

Available on ORBilu :

since 25 January 2023

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Bibliography

Al-Kodmany, K., The logic of vertical density: tall buildings in the 21st Century City. Int. J. High-Rise Build. 1:2 (2012), 131–148.
EN 1994-1-1:2004, Eurocode 4: Design of Composite Steel and Concrete Structures – Part 1–1: General Rules and Rules for Buildings. 2004, European Standard, European Committee for Standardization, Brussels.
Odenbreit, C., High Rise Buildings in Steel – From Past to Present, Proceedings of the Journée Construction Acier 2015. 2015, Luxembourg, Luxembourg.
ANSI/AISC 360–16, Specification for Structural Steel Buildings, an American National Standard. 2016, American Institute of Steel Construction AISC, USA.
Wong Wai Man, R., Construction of Two IFC, Presentation, City University of Hong Kong, Online Photo Library. http://personal.cityu.edu.hk/bswmwong/pl.html.
Xiao, C., Deng, F., Chen, T., Zhao, Z., Experimental study on concrete-encased composite columns with separate steel sections. Steel Compos. Struct., 23(4), 2017.
Bogdan, T., Gerardy, J.-C., Davies, D.W., Popa, N., Performance and capacity of composite “mega columns” with encased hot rolled steel sections. Proceedings of the 8th European Conference on Steel and Composite Structures Eurosteel 2017, Copenhagen, Denmark, 2017.
Bogdan, T., Plumier, A., Degée, H., A proposal for the design of concrete sections reinforced by multiple encased rolled steel sections. Proceedings of the 7th European Conference on Steel and Composite Structures Eurosteel 2014, Naples, Italy, 2014.
Degée, H., Plumier, A., Bogdan, T., Popa, N., Cajot, L.-G., De Bel, J.-M., Mengeot, P., Hjiaj, M., Nguyen, Q.-H., Somja, H., Elghazouli, A., Bompa, D., Smart Composite Components - Concrete Structures Reinforced by Steel Profiles, SmartCoCo, European Commission, Research Programme of the Research Funds for Coal and Steel, TGS 8, RFSR-CT-2012-00031. 2016.
Chrzanowski, M., Odenbreit, C., Obiala, R., Bogdan, T., Braun, M., Degée, H., Development of an innovative type of shear connector dedicated to fully embedded steel-concrete composite columns – experimental and numerical investigations. Proceedings of the 12th International Conference on Advances in Steel-Concrete Composite Structures (ASCCS 2018), Valencia, Spain, 2018.
Odenbreit, C., Chrzanowski, M., Obiala, R., Bogdan, T., Degée, H., Characterisation of a new flat mechanical shear connection mean for steel-concrete composite columns. Struct. Elsevier, 2019, 10.1016/j.istruc.2019.03.001.
Chrzanowski, M., Shear Transfer in Heavy Steel-Concrete Composite Columns with Multiple Encased Steel Profiles. PhD Thesis, 2019, University of Luxembourg http://hdl.handle.net/10993/40011.
EN 1992-1-1, Eurocode 2: Design of Concrete Structures – Part 1-1: General Rules and Rules for Buildings. 2004, European Standard, European Committee for Standardization, Brussels.
EN 1993-1-5, Eurocode 3: Design of Steel Structures – Part 1-5: Plated Structural Elements, European Standard, European Committee for Standardization, Brussels. 2006.
EN 1993-1-1, Eurocode 3: Design of Steel Structures – Part 1-1: General Rules and Rules for Buildings, European Standard, European Committee for Standardization, Brussels. 2005.
ISO 6892-1:2009, Metallic materials – Tensile testing – Part 1: Method of test at room temperature, International Standard, Geneva, Switzerland, International Organization for Standardization. 2009.
ISO 6935-2:2007, Steel for the reinforcement of concrete – Part 2: Ribbed bars, International Standard, Geneva, Switzerland, International Organization for Standardization. 2007.
EN 12390–3:2001, Testing hardened concrete – Part 3: Compressive strength of test specimens, European Standard, Brussels, BE, European Committee for Standardization. 2001.
fib Model Code for Concrete Structures, International Federation for Structural Concrete (fib), Lausanne, Switzerland. 2013, 2010.
Chrzanowski, M., Odenbreit, C., Obiala, R., Bogdan, T., Shear stresses analysis at the steel-concrete interface with the usage of bond eliminating products, proceedings of the XI Congresso de Construção Metálica e Mista (XICMM), Coimbra, Portugal. 2017, 1027–1036.
Chrzanowski, M., Odenbreit, C., Obiala, R., Bogdan, T., Degee, H., Transfer of shear stresses at steel-concrete interface – experimental tests and literature review, steel construction, design and research. Ernst & Sohn, A Wiley Brand 12:1 (2019), 44–54, 10.1002/stco.201800024.
SIMULIA User Assistance, Abaqus. 2017, Dassault Systèmes Simulia Corp, Providence, RI, USA.
Dehestani, M., Mousavi, S.S., Modified steel bar model incorporating bond-slip effects for embedded element method. Construct. Build. Mater. Elsevier 81 (2015), 284–290, 10.1016/j.conbuildmat.2015.02.027.
Aykac, B., Aykac, S., Kalkan, I., Dundar, B., Can, H., Flexural Behaviour and Strength of Reinforced Concrete Beams with Multiple Transverse Openings, ACI Structural Journal, American Concrete Institute ACI, March–April 2014, Title No. 111-S23. 2014, 267–278.
ACI 318–14, Building Code Requirements for Structural Concrete, with commentary ACI 318R-14, An ACI Standard and Report, ACI Committee 318, American Concrete Institute ACI. 2014.
Mirza, S.A., Tikka, T.K., Flexural stiffness of composite columns subjected to major axis bending, Title no. 96-S03. ACI Struct. J. Am. Concr. Inst. ACI, Jan-Feb, 1999, 19–28.
Lippes, M., Zur Bemessung von Hohlprofil – Verbundstützen aus hochfesten Stählen und Betonen. PhD Thesis, November 2008, Bergische Universität Wuppertal, Germany ISBN 978–3–940795-12-0.
Chanou, M., Zum Tragverhalten von Hohlprofil-Verbundstützen mit Mehrkernquerschnitten, Heft 23. PhD Thesis, 2018, Institut für Konstruktiven Ingenieurbau, Bergische Universität Wuppertal, Germany ISBN 978–3–940795-22-9.
Ji, X., Sun, Y., Qian, J., Lu, X., Seismic behavior and modeling of steel reinforced concrete (SRC) walls, Earthquake Engineering & Structural Dynamics. Wiley 44 (2015), 955–972, 10.1002/eqe.2494.