Lateral torsional buckling of plate girder composite bridges – general method
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Bibliographic Details
| Author(s): |
Stoyan Ivanov
(University of Architecture, Civil Engineering and Geodesy & Schimetta Consult Engineering Ltd., Sofia, Bulgaria)
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021 | ||||
| Published in: | IABSE Congress Ghent 2021 | ||||
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| Page(s): | 675-681 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/ghent.2021.0675 | ||||
| Abstract: |
According to Eurocode 4-2, lateral torsional buckling check should be performed for any steel flange in compression that is not laterally restrained. In common steel-concrete composite bridges, with slab on top of the main girders and no additional horizontal bracing, this applies for the bottom flanges over internal supports of a continuous beams. The check is also relevant for the bottom flanges at the abutments of integral composite bridges. Eurocode 4-2 gives recommendations for the use of three verification methods for LT buckling: Inverted U-frame method, General method, and Simplified method. In this paper the three methods are discussed. Their restrictions for practical application are commented. Application of the General and Simplified methods over a single span integral composite bridge is illustrated. Comparison of the results between the General method and the Simplified method is presented. |
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| Keywords: |
general method simplified method steel-concrete composite bridges LT buckling
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| Copyright: | © 2021 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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