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Abstract
The paper presents selected methods of determining stability and limit load of a truss top chord in opened bridges. These methods include linear buckling and non-linear static analysis based on the finite element method and algorithms based on design code procedures. The described methods were tested on an example of a steel footbridge situated in Straszyn. The results of stability analysis are compared. The results of geometrical and material non-linear analysis are close for the perfect structure, but very large (40%) for large imperfection amplitudes. Using first global free vibration mode as in initial imperfection resulted in greater load-carrying capacity than first global buckling mode. The critical forces is nearly equal to the results from non-linear analysis. A Polish standard procedure showed some difficulties during analysis so the final condition of stability was not satisfied, while a Eurocode procedure confirmed correctness of a footbridge design.
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- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Title of issue:
- 3rd Polish Congress of Mechanics (PCM) / 21st International Conference on Computer Methods in Mechanics (CMM) strony 627 - 630
- Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Żmuda-Trzebiatowski Ł., Iwicki P., Krajewski M..: Investigation of stability and limit load of a truss overhead opened bridge, W: 3rd Polish Congress of Mechanics (PCM) / 21st International Conference on Computer Methods in Mechanics (CMM), 2016, CRC Press/Balkema - Taylor & Francis Group,.
- DOI:
- Digital Object Identifier (open in new tab) 10.1201/b20057-135
- Verified by:
- Gdańsk University of Technology
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