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 language | English |
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| Title of host publication | Structural Stability Research Council Annual Stability Conference 2019, SSRC 2019 |
| Publisher | Structural Stability Research Council (SSRC) |
| Pages | 196-213 |
| Number of pages | 18 |
| Volume | 1 |
| ISBN (Electronic) | 9781510884465 |
| Publication status | Published - 1 Jan 2019 |
| Event | Structural Stability Research Council Annual Stability Conference 2019, SSRC 2019 - St. Louis, United States Duration: 2 Apr 2019 → 5 Apr 2019 |
Conference
| Conference | Structural Stability Research Council Annual Stability Conference 2019, SSRC 2019 |
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| Country | United States |
| City | St. Louis |
| Period | 2/04/19 → 5/04/19 |