The viaduct comprises a series of six portal frames, the first five of which being 3-span portals
The viaduct comprises a series of six portal frames, the first five of which being 3-span portals (33 m. + 48 m. + 33 m.), with the deck fixed-jointed to the two center piers; the sixth portal is anomalous as it has only two spans, each 33 m. long, with the deck restrained to the single center pier. Between one portal and the next one there is a joining pier that supports the ends of the side spans of any two contiguous portals. The 3,50 m. high deck is a box cross-section girder with two ribs. The piers of 37 m. maximum height are either of rectangular, hollow, cross section, or of double-blade type.
Construction of the viaduct was realized using the span by span method with mobile centering.
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| Project |
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Viaduct Beni Brahim for the Constantine-Skikda Railway
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| Location |
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Algeria
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Main client
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THE MINISTRY OF TRANSPORTATION (Algeria) |
| Contractor |
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Joint-Venture COGEFAR S.P.A. - ITALSTRADE S.P.A. (Italy) |
| Designer |
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SETEC Travaux Publics (France)
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| Period |
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1982 - 1984 |