Application of geometrically exact beam finite elements in the advanced analysis of steel and steel-concrete beam-columns

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Abstract

This paper aims at showing the potential of geometrically exact beam finite elements to assess, accurately, the non-linear behavior of steel and steel-concrete composite beam-columns. First, one discusses the formulation and implementation aspects of 2D/3D geometrically exact beam finite elements, including geometric imperfections, residual stresses and material non-linear laws for both steel and concrete. Then, a set of numerical examples is provided, to demonstrate the capabilities of the proposed finite elements. Finally, the finite elements are employed to investigate: (i) the buckling behavior of concrete encased steel I-section beam-columns and (ii) the lateral-torsional buckling behavior of wide flange steel I section beams. The results obtained are then compared with the buckling loads provided by Eurocodes 3 (steel) and 4 (steel-concrete) and relevant conclusions/recommendations are drawn.

Original languageEnglish
Title of host publicationStructural Stability Research Council Annual Stability Conference 2019, SSRC 2019
PublisherStructural Stability Research Council (SSRC)
Pages196-213
Number of pages18
Volume1
ISBN (Electronic)9781510884465
Publication statusPublished - 1 Jan 2019
EventStructural Stability Research Council Annual Stability Conference 2019, SSRC 2019 - St. Louis, United States
Duration: 2 Apr 20195 Apr 2019

Conference

ConferenceStructural Stability Research Council Annual Stability Conference 2019, SSRC 2019
CountryUnited States
CitySt. Louis
Period2/04/195/04/19

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