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Novel shearhead reinforcement for slab-column connections subject to eccentric load and fire

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Traditional means of reinforcing concrete flat slab-column connections against punching shear, such as increasing slab thickness, or provision of shear links, all have drawbacks. This paper proposes a novel type of punching shear reinforcement in the form of a shearhead to enhance connection strength and ductility. The structural behaviour of the connection is explored experimentally by testing nine specimens under various loading conditions including eccentric loads that produce combined axial and bending effects. Specimens with and without shearheads are compared. This is followed by a detailed numerical investigation using finite element analysis to obtain more in-depth insights into the connection behaviour when shearheads are present. The performance of the proposed system is also investigated under fire conditions for the first time. It is found that the proposed shearheads improve the performance of slab-column connections in all conditions and particularly under concentric loading and in fire conditions.
Rocznik
Strony
503--524
Opis fizyczny
Bibliogr. 42 poz., rys., tab., wykr.
Twórcy
  • School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
  • Al-Nahrain University, Baghdad, Iraq
  • The School of Engineering, The University of Warwick, Coventry, CV4 7AL, UK
  • School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
autor
  • International Paint Ltd, Stoneygate Lane, Felling, Gateshead, Tyne and Wear, NE10 0JY, UK
  • School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK
Bibliografia
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  • [4] D.A. Gasparini, M. Asce, Contributions of C. A. P. Turner to Development of Reinforced Concrete Flat Slabs 1905–1909, J. Struct. Eng. 128 (2002) 1243–1252.
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  • [9] M. Ghoreishi, A. Bagchi, M.A. Sultan, Review of the punching shear behavior of concrete flat slabs in ambient and elevated temperature, Struct. Fire Eng. 4 (2013) 259–280.
  • [10] S. Hamada, Q. Yang, M. Mao, Evaluation of punching shear strength of reinforced concrete slabs based on database, J. Adv. Concr. Technol. 6 (2008) 205–214.
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  • [17] C.L. Moreno, A.M. Sarmento, Punching Shear in Eccenrically Loaded Flat Slabs, in: Challenges Civ. Constr., Torres Marques et al. (Eds), Porto, 2008.
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  • [38] R.B. Gayed, A. Ghali, F. Asce, Unbalanced moment resistance in slab-column joints: analytical assessment, J. Struc. Eng. 134 (2008) 859–864.
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  • [40] H.K.M. Smith, Punching Shear of Flat Reinforced-Concrete Slabs under Fire Conditions, The University of Edinburgh, 2016.
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-a12cab18-f1e5-4e43-b3b6-3df736d889a4
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