Author: Concrete Bridge Development Group (CBDG)
1st April 2014
First published: 1st April 2014
Standard: £9 + VAT
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Concrete Bridge Development Group (CBDG)
This article examines the detailing that is particular to a concrete bridge. All details need to consider buildability, durability and maintainability, as well as safety and aesthetic issues.
This month’s article from the CBDG’s Technical Committee examines the construction methods for the six basic types of precast concrete bridge:
• Standard precast inverted T/Y, I or U beams
• Bespoke precast T, I or U beams
• Precast segmental box girders with short segments
• Whole span precast box girders
• Incrementally launched box girders
• Modular precast system with short shell segments
In this article, the various types of formwork and falsework needed to construct a concrete bridge are examined. The choice of bridge type depends not only on the general parameters of the scheme (such as typical spans, overall deck area, clearance requirements, alignment and the overall aesthetic), but also on the particular and local parameters of the site, many of which are related to construction.