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Replacement of external post-tensioning in bridge structures – practical experience in cutting the highly stressed tendons

 Replacement of external post-tensioning in bridge structures – practical experience in cutting the highly stressed tendons
Auteur(s): ,
Présenté pendant IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024, publié dans , pp. 602-610
DOI: 10.2749/sanjose.2024.0602
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Replacing deteriorated external post-tensioning (PT) systems helps to extend infrastructure life, thus saving the CO2 emissions associated with the construction of replacement structures. This pape...
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Détails bibliographiques

Auteur(s): (BBR VT International, Zurich, Switzerland)
(BBR VT International, Zurich, Switzerland)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024
Publié dans:
Page(s): 602-610 Nombre total de pages (du PDF): 9
Page(s): 602-610
Nombre total de pages (du PDF): 9
DOI: 10.2749/sanjose.2024.0602
Abstrait:

Replacing deteriorated external post-tensioning (PT) systems helps to extend infrastructure life, thus saving the CO2 emissions associated with the construction of replacement structures. This paper presents experiences from two projects involving the de-tensioning of fully grouted external PT systems, providing valuable engineering insights. After difficulties were encountered on the first project while following internationally accepted guidelines for cutting a fully grouted external PT tendon, an alternative method was developed for the second project of the same kind which improved the feasibility for the conditions encountered, minimizing risks to the structure and to the personnel doing the work.