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New modular construction method for multi-span concrete bridges with reduced material consumption

 New modular construction method for multi-span concrete bridges with reduced material consumption
Auteur(s): , ,
Présenté pendant IABSE Congress: Engineering for Sustainable Development, New Delhi, India, 20-22 September 2023, publié dans , pp. 86-91
DOI: 10.2749/newdelhi.2023.0086
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A new construction method for post-tensioned bridges with a double-T cross-section was developed at the Institute of Structural Engineering (TU Wien). That method enables a swift production of the ...
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Détails bibliographiques

Auteur(s): (TU Wien, Institute of Structural Engineering, Vienna, Austria)
(TU Wien, Institute of Structural Engineering, Vienna, Austria)
(TU Wien, Institute of Structural Engineering, Vienna, Austria)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Engineering for Sustainable Development, New Delhi, India, 20-22 September 2023
Publié dans:
Page(s): 86-91 Nombre total de pages (du PDF): 6
Page(s): 86-91
Nombre total de pages (du PDF): 6
DOI: 10.2749/newdelhi.2023.0086
Abstrait:

A new construction method for post-tensioned bridges with a double-T cross-section was developed at the Institute of Structural Engineering (TU Wien). That method enables a swift production of the longitudinal girders and the deck slab. Precast deck slab elements stiffened by cross-beams are placed on top of the installed post-tensioned precast girders. The precast hollow box girders and the deck slab elements can be installed along the whole length of the bridge with cranes or a launch- ing gantry. The combination of precast hollow box bridge girders and precast deck slab elements allows for the fast production of post-tensioned concrete bridges with a double-T cross-section in the span range from 30 m to 60 m. This method will make the erection of one span per week possi- ble, thus achieving the same construction speed as segmental bridge construction. Compared with segmental box girder bridges, the new construction method permits a reduction of construction materials and avoids transverse joints that extend over the entire height of the finished cross-sec- tion.

Mots-clé:
durable