Deckslab Continuity for Composite Bridges
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Deckslab Continuity for Composite Bridges

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The Structural Engineer
Citation

The Structural Engineer, Volume 76, Issue 23, 1998

Date published

N/A

Citation

The Structural Engineer, Volume 76, Issue 23, 1998

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Standard: £10 + VAT
Members/Subscribers: Free

Precast beams acting compositely with in situ concrete deckslabs are a popular form of bridge construction. In the last 40 years, the use of this form has been extended to constructing multispan bridges on a span-by-span basis with movement joints at each support. Such joints have not performed satisfactorily because the penetration of road salts through them causes corrosion damage in these constricted areas of the bridge. Several methods of eliminating such joints have been evolved during the last 30 years; these are briefly described here. The deckslab continuity method, evolved by the author; is then presented. Its concept, design and applications are described with a view to engineers extracting maximum advantage from this powequl, yet simple, method of achieving continuity in multispan bridges. It is also shown that this method generally results in large economies as compared with the other methods and some savings even as compared with the undesirable 'jointed' span-by-span construction.

A. Kumar

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PDF
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The Institution of Structural Engineers

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Issue 23/24

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