Load-carrying capacity of axially loaded concrete-filled steel tubular columns made of thin tubes

• Autorzy: Abramski M.

Identyfikatory

DOI

10.1016/j.acme.2018.01.002

• Języki publikacji: EN

Abstrakty

EN

An experimental investigation was conducted on 30 CFST columns. An influence of the following factors on load-carrying capacity of the investigated columns was analyzed: the column slenderness (λ1 = 42, λ2 = 27 and λ3 = 15), the tube thickness (the reinforcement ratio was equal to 4% or 6%), the way of applying the load to CFST columns (through the concrete core or through the entire cross-section), the bond strength between a steel tube and a concrete core. The results of the experimental investigation let the author derive a practical method of determining load-bearing capacity of CFST columns. The Eurocode 4 provisions regulating composite steel and concrete structures design impose the minimum share of a steel tube in the cross-sectional area of a CFST column. This minimum share is the prerequisite for the Eurocode 4 to be applicable. It ranges from 0.5% to 6%. As the experimental research presented in the paper indicate, the CFST columns of such low reinforcement ratios can be also effective in carrying loads. The proposed method is a second order analysis based on stiffness, similarly as the calculation procedure for the ordinary reinforced concrete columns which is used in Eurocode 2. The experimental results prove the author's suggestion to be correct.

Słowa kluczowe

EN

composite column; experiment; load carrying capacity; bond strength; Eurocode

PL

kolumna kompozytowa; eksperyment; nośność

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 18, no. 3
• Strony: 902--913
• Opis fizyczny: Bibliogr. 19 poz., fot., rys., tab., wykr.

Twórcy

autor

Abramski M.

• Gdansk University of Technology, Faculty of Civil and Environmental Engineering, ul. G. Narutowicza 11/12, 80-233 Gdansk, Poland

Bibliografia

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• [3] K.M. Shrestha, B. Chen, Y. Chen, State of the art of creep of concrete filled steel tubular arches, KSCE J. Civ. Eng. (2011) 145–151. http://dx.doi.org/10.1007/s12205-011-0734-7.
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• [7] EN 1992-1-1, Eurocode 2: Design of Concrete Structures – Part 1-1: General Rules and Rules for Buildings, 2010.
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• [9] M. Abramski, W. Kurz, J. Schnell, Experimental investigations on unconventional shear connection between steel web and concrete slab in composite beams (in Polish), Inżynieria I Bud. 67 (2011) 109–112.
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• [14] B. Xu, T. Zhang, G. Song, H. Gu, Active interface debonding detection of a concrete-filled steel tube with piezoelectric technologies using wavelet packet analysis, Mech. Syst. Signal Process. 36 (2013) 7–17. , http://dx.doi.org/10.1016/j. ymssp.2011.07.029.
• [15] M. Abramski, Experimental Investigations on the Properties of the Axially Loaded CFST Columns, Ph.D. thesis, Gdansk University of Technology, 2006 (in Polish).
• [16] M. Król, W. Tur, Expanding Concrete, Arkady, Warsaw, Poland, 1999 (in Polish).
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• [18] PN-B-03264:2002, Concrete, Reinforced Concrete and Prestressed Concrete Structures. Static Calculation and Design, 2002 (in Polish).
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)