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Bow-shaped segments in precast segmental bridges
Publikationstyp
Journal Article
Date Issued
2008-06-01
Sprache
English
Author(s)
Institut
TORE-URI
Journal
Volume
30
Issue
6
Start Page
1711
End Page
1719
Citation
Engineering Structures 6 (30): 1711-1719 (2008-06-01)
Publisher DOI
Scopus ID
Publisher
Elsevier Science
Segmental bridges made of small precast elements have become a standard construction method for many highway and railway bridges in the world. Nevertheless some important aspects need further investigation. One is the unavoidable gap between two adjacent elements caused by the heat of hydration during segment production ('bowing effect'). This imperfection may significantly influence the bearing capacity of the structure and its serviceability. A thermo-mechanical finite element model has been developed and verified by full-scale test data to study the match-casting process. Thereafter, two real segmental bridges with perfect and imperfect segments have been modelled. The various analyses showed that compressive stresses and the load bearing capacity of the structure as well as its serviceability may be highly influenced by the bowing effect.
Subjects
Bowing
Finite element analysis
Match-cast method
Precast segmental bridge
DDC Class
690: Hausbau, Bauhandwerk