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PARAMETRIC STUDY ON DAMAGES AND STRENGTH BEHAVIOUR OF POST-TENSIONED GIRDERS IN DECHATIWONG BRIDGES



Author(s): Nat Hanwiboonwat(1), Tidarut Jirawattanasomkul (1), Songpol Charuvisit (1), Nattamet Wuttiwannasak (1), Nuttapong Kongwang (1), Chinapat Banluelap (1), Tawan Norsakul (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 615-620
Total Pages: 6
Language : English


Abstract: The Dechatiwong bridges located on Nakhon Sawan province, Thailand, are in the part of national highways as well as Asian Highways, connecting between Bangkok and the northern part of the country. To date, horizontal cracks have been observed at the ledge’s corner of the end girders in these bridges. This research, therefore, aims to indicate causes of such cracks and investigate their behaviour using 2D non-linear finite element method by ATENA program. The vehicle loads and load patterns were evaluated based on AASHTO LRFD-2012 standards. The analysed Post-tensioned concrete (PC) girder is 11.75 m long with a cantilever fixed-end support. The analysis is focused on influences of prestressing sequences and losses in prestress which are varied from 0-50%. From the analytical results, severe cracks at the end of girders are caused by the losses in prestress.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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