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Failure Assessment of Steel-Concrete Composite Column Under Blast Loading

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Composite column as a key structural member can be subjected to a blast load as a result of an accident or a terrorist threat. In this paper, a method for assessing the blast resistance of a composite concrete-filled column is proposed. Moreover, different methods of enhancing composite member resistance to explosions are investigated. The blast situation is modeled in the FEM software using the CONWEP tool. This empirical formulation is relatively cheap from the computational point of view, as well as precise enough, hence it was chosen for this work purposes. Material models are based on well known elasto-plastic with linear hardening concepts. Important phenomenons are also taken into account, such as: contact formulation between the column components, strain rate dependence, damage initiation and evolution. Simulations are conducted for the most common type of explosion – surface blast. Its main feature is the effect of reflection of the ground surface and hence, amplification of the blast wave after the charge ignition. Results are presented in terms of minimum TNT mass equivalent required for a column member failure.
Rocznik
Strony
61--84
Opis fizyczny
Bibliogr. 28 poz., rys., tab., wykr.
Twórcy
autor
  • Poznan University of Technology Institute of Structural Engineering Piotrowo 5, 60-965 Poznań, Poland
autor
  • Poznan University of Technology Institute of Structural Engineering Piotrowo 5, 60-965 Poznań, Poland
Bibliografia
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  • 3. Chock J.M.K., Kapania R.K., Review of two methods for calculating explosive air blast, Shock and Vibration Digest, 33, 91–102, 2001.
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  • 9. Gajewski T., Garbowski T., Mixed experimental/numerical methods applied for concrete parameters estimation, Proceedings of XX International Conference on Computer Methods in Mechanics CMM2013, Recent Advances in Computational Mechanics, T. Łodygowski, J. Rakowski, P. Litewka [Eds.], 293–302, CRC Press, 2014.
  • 10. Garbowski T., Maier G., Novati G., Diagnosis of concrete dams by flat-jack tests and inverse analyses based on proper orthogonal decomposition, Journal of Mechanics of Materials and Structures, 6, 1–4, 181–202, 2011.
  • 11. Georgin J.F., Reynouard J.M., Modeling of structures subjected to impact: Concrete behaviour under high strain rate, Cement and Concrete Composites, 25, 131–143, 2003.
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  • 24. Rodriguez-Nikl T., Lee C.-S., Hegemier G.A., Seible F., Experimental performance of concrete columns with composite jackets under blast loading, Journal of Structural Engineering, 138, 1, 81–89, 2012.
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  • 28. The MathWorks, Inc., Matlab R2011a Documentation, 2011.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-3e4d3eb2-92e4-4888-a6ef-20c0f2566e55
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