Alternative replacement option for medium-span bridge with the Hybrid Decked Bulb Tee
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Bibliographic Details
| Author(s): |
Pablo Agüero Barrantes
(LanammeUCR, San Pedro, Costa Rica)
Alexandra Hain (University of Connecticut, Storrs, CT, USA) |
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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): | 235-241 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/sanjose.2024.0235 | ||||
| Abstract: |
Increasing the service life of bridges has become a critical requirement in modern times. To address this need, new materials and technologies are essential, for example Ultra High-Performance Concrete (UHPC). This paper introduces the Hybrid Decked Bulb Tee (HDBT) beam, an advancement in prefabricated construction that employs a combination of prestressed UHPC and non-prestressed High-Performance Concrete (HPC). By implementing a staged construction process, the HDBT beam effectively reduces beam-end cracking commonly observed in traditional prestress construction methods. To justify the structural reliability of the HDBT, this paper presents an analytical investigation based on state-of-the-art research. The results demonstrate that the HDBT beam is a feasible option for bridge rehabilitation projects, offering enhanced performance and extended service life. |
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| Keywords: |
bridge durability beams finite element FE pre-tensioning UHPC ultra-high performance concrete (UHPC) structure replacement
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