PSI - Issue 63

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ScienceDirect

Procedia Structural Integrity 63 (2024) 1–6

22nd International Conference on Modelling in Mechanics 2024 Verification of Stress State in the Lower Part of the Steel Bridge Detail Ji ř í Brožovský a , Martin Krejsa a, *, Petr Lehner a a VSB-Technical University of Ostrava, Faculty of Civil Engineering, Department of Structural Mechanics, Ludvika Podeste 1875/17, 708 00 Ostrava – Poruba, Czech Republic

Abstract This contribution studies a stress state in a detail of the tension flange of the stringer at the point of connection of the cross member in the steel part of the steel-concrete bridge. The uFEM software was used for the numerical calculation of the analysed structural element using the finite element method. The model combines two phases, one focusing on the global analysis of the structure and the other focusing on the critical detail of the structure. Obtained results are used as basis for decision on use of simplified analytical approach for investigation of fatigue behavior of the studied detail of the load-bearing system of the analyzed highway steel-concrete bridge. © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of 22nd International Conference on Modelling in Mechanics 2024 organizers

Keywords: Steel-concrete structure; stress; fatigue; numerical model; FEM analysis

1. Introduction Steel and composite (concrete-steel) bridge structures always include details which are prone to fatigue failure, e.g. [1], [2]. Many of engineering approaches use analytical formulae to study failure behavior. The main limitation of analytical approach is that in necessarily requires idealization or simplification of studied problem. In real engineering

* Corresponding author. Tel.: (+420) 596 991 303. E-mail address: martin.krejsa@vsb.cz

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of 22nd International Conference on Modelling in Mechanics 2024 organizers 10.1016/j.prostr.2024.09.001