Strengthening double curved arch bridges by using extrados section augmentation method

Kang, Juntao, Wang, Xuefeng, Yang, Jian and Du, Yingang (2013) Strengthening double curved arch bridges by using extrados section augmentation method. Construction and Building Materials, 41. pp. 165-174. ISSN 1879-0526

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Double curved arch bridges have played an important role in the history of bridge construction in China. The strengthening or retrofitting of this type of bridge has attracted a great deal of research attention in the Chinese bridge engineering community. In this paper, a novel strengthening method, i.e. the extrados section augmentation strengthening method (ESASM), has been reported. Firstly, the rationale behind this new method and the changes in internal forces after strengthening have been studied in details. A numerical optimization analysis was then performed to derive a strengthening design solution based on these results. Secondly, a trial use of this novel strengthening method in a double curved arch bridge has been reported. A numerical simulation was carried out to analyze the internal forces in the bridge both before and after it was strengthened. Results show that internal forces have been favourably redistributed after the bridge has been strengthened by using ESASM. Lastly, the adopted construction method and the strengthening effect for that project were described.

Item Type: Journal Article
Keywords: Double curved arch bridge, Extrados section augmentation method, Structural optimization, Low expansion concrete, Strengthening, Retrofitting
Faculty: ARCHIVED Faculty of Science & Technology (until September 2018)
Depositing User: Repository Admin
Date Deposited: 05 Nov 2013 14:31
Last Modified: 12 Nov 2021 14:53

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