Numerical analysis of Precast Concrete Segmental Bridge decks for High-Speed Railway lines with external and internal prestressing tendons
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Bibliographic Details
| Author(s): |
Javier Cañada Pérez-Sala
(Foster and Partners, London, United Kingdom)
Ana M. Ruiz-Teran (Imperial College London, London, United Kingdom) |
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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): | 643-650 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/sanjose.2024.0643 | ||||
| Abstract: |
Precast Concrete Segmental Bridges (PCSBs) tend to incorporate bonded internal prestressing tendons and unbonded external tendons. Each type of tendons has different characteristics regarding mechanical behaviour, durability, and ease of construction. In order to study the influence of combining the two types of tendons in PCSBs for high-speed railways, Finite Element models of a benchmark case with different proportions of internal and external prestressing tendons have been analysed. Static and dynamic load models representing the actions of high-speed trains circulating over the bridge have been implemented. The results of this research allow proposing new design recommendations regarding the combination of internal bonded and external prestressing tendons in PCSB decks for High-Speed railway lines. |
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| Keywords: |
high-speed railways external post-tensioning Precast Concrete Segmental Bridges bonded post-tensioning
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