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Exploitation problems with particular road and railway composite bridges in Bulgaria

 Exploitation problems with particular road and railway composite bridges in Bulgaria
Autor(en): ,
Beitrag für IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021, veröffentlicht in , S. 660-665
DOI: 10.2749/ghent.2021.0660
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Composite steel-concrete bridges are having wide implementation in the present bridge practice due to their advantages. On the other hand, composite bridges have complex time dependent behaviour du...
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Bibliografische Angaben

Autor(en): (University of Architecture, Civil engineering and Geodesy, Sofia, Bulgaria)
(University of Architecture, Civil engineering and Geodesy, Sofia, Bulgaria)
Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021
Veröffentlicht in:
Seite(n): 660-665 Anzahl der Seiten (im PDF): 6
Seite(n): 660-665
Anzahl der Seiten (im PDF): 6
DOI: 10.2749/ghent.2021.0660
Abstrakt:

Composite steel-concrete bridges are having wide implementation in the present bridge practice due to their advantages. On the other hand, composite bridges have complex time dependent behaviour due to long term processes in concrete – creep and shrinkage. Stress strain state is a function of the sequence of their construction. In general, building an effective composite bridge needs relatively higher level of knowledge, precision and responsibility from designers, contractors, and relevant authorities. Implementation of composite bridge superstructures in Bulgaria is discussed in this paper. The influence of some problems related with design and construction of particular road and railway bridges on their behaviour during exploitation are analysed. Exploitation problems of three bridges are discussed. Conclusions for reasons leading to these problems and variants for avoiding them in future projects are analysed.

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Copyright: © 2021 International Association for Bridge and Structural Engineering (IABSE)
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