On the effect of steel columns cross sectional properties on the behaviours when subjected to blast loading

Bahadori-Jahromi, Ali (2012) On the effect of steel columns cross sectional properties on the behaviours when subjected to blast loading. Structural Engineering and Mechanics: An International Journal, 44 (4). pp. 449-463.

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Abstract. For buildings subjected to blast loading, structural failure can be categorized into local failure
(direct blast effects) and progressive collapse (consequential effects). In direct blast effects, the intensive
blast pressures create localized failure of structural elements such as exterior columns and walls. Columns,
and their behaviour, play a key role in these situations. Therefore investigating the behaviour of columns
under blast loading is very important to estimate the strength, safety and reliability of the whole structure.
When a building is subjected to blast loading, it experiences huge loading pressures and undergoes great
displacement and plastic behaviour. In order to study the behaviour of an element under blast loading, in
addition to elastic properties of materials, plastic and elastic-plastic properties of materials and sections are
needed. In this paper, using analytical studies and nonlinear time-history analysis by Ansys software, the
effects of shape of column sections and boundary conditions, on behaviour and local failure of steel
columns under blast load are studied. This study identifies the importance of elastic-plastic properties of
sections and proposes criteria for choosing the best section and boundary conditions for columns to resist
blast loading.

Keywords: steel column; blast load; local failure; nonlinear analysis; section shape

Item Type: Article
Subjects: Construction and engineering > Civil and structural engineering
Date Deposited: 25 May 2016 21:34
Last Modified: 07 Feb 2017 12:57
URI: http://repository.uwl.ac.uk/id/eprint/2133

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