Replacement of external post-tensioning in bridge structures – practical experience in cutting the highly stressed tendons
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Bibliographic Details
| Author(s): |
Xiaomeng Wang
(BBR VT International, Zurich, Switzerland)
Olivier Forget (BBR VT International, Zurich, Switzerland) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024 | ||||
| Published in: | IABSE Congress San José 2024 | ||||
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| Page(s): | 602-610 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/sanjose.2024.0602 | ||||
| Abstract: |
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. |
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| Keywords: |
post-tensioning replacement external tendon de-tensioning asset conservation
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