Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Díaz de Terán, José Ramón; * | Haach, Vladimir G.
Affiliations: Department of Structures, University of Sao Paulo, Sao Carlos, Brazil
Correspondence: [*] Corresponding author. José Ramón Díaz de Terán, Department of Structures, University of Sao Paulo, Sao Carlos, Brazil. Avd. Trabalhador Saocarlense n° 400, Sao Carlos, Sao Paulo, CEP: 13566-590, Brasil. E-mail: jringcamjunior@gmail.com.
Abstract: During last years a new constructive sequence of viaducts with movable scaffolding system (MSS) has been developed in Spain. This sequence is based on a self-supporting core that is formed by the bottom slab, webs and the cantilevers of the top slab so the MSS can advance to the next span and activities of the second casting phase can be performed out of crithical path. This current sequence has 2 related issues: the need of two prestressing stages per span and the need of long length splices between the self-supporting core and the second casting phase. The current paper studies if the number of prestressing stages per span can be reduced to only one. Two different solutions are proposed. Solution 1 consists in introducing 100% of the prestressing force at the self-supporting core. Solution 2 consists in introducing 50% of the prestressing force in a tendon that crosses two spans so when other 50% of the prestressing force is introduced at the self-supporting core, prestressing force reaches 100% at the previous span. As no viaducts have been constructed with Solution 1 and 2, Finite Element models have been carried out and suggest that Solutions 1 and 2 can be considered for construction.
Keywords: Bridges, movable scaffolding system, stresses, viaducts, concrete structures
DOI: 10.3233/BRS-170109
Journal: Bridge Structures, vol. 13, no. 1, pp. 43-54, 2017
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl