These examples of bridge design calculations are based on BS 5400 and the Design Manual for Roads and Bridges.
The design calculations are in .pdf format and are downloaded to you in a zip folder.
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Examples have been prepared to illustrate the design principles for a reinforced concrete bridge deck on
reinforced concrete abutments and pier to suit a hypothetical set of conditions. Users of these examples should verify for
themselves the appropriateness of any parts of the examples which they use for their own bridge designs and their own
particular conditions, and should check for themselves the correctness of any calculations that they copy. David Childs
has prepared these documents to assist designers, but he takes no responsibility for how the examples are used.
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Design calculations for a hypothetical two span reinforced concrete bridge deck to illustrate the requirements of BS 5400 Part 2 loading and Part 4 for design of concrete bridges. A grillage analysis is undertaken; input load cases and output results are included. The example also demonstrates how spreadsheets can be used effectively to reduce the design time taken with the repetative calculations.
Design calculations for reinforced concrete abutments, wing walls and pier of a hypothetical two span bridge deck to illustrate the requirements of BS 5400 Part 2 loading and Part 4 for design of concrete bridges. Loading from the superstructure has been taken from the Reinforced Concrete Bridge Deck Example. The example also demonstrates how spreadsheets can be used effectively to reduce the design time taken with the repetative calculations.
Two grillage analysis were carried out to check the significance of increasing the flexural steel requirements for designing for zero torsional restraint in grillage members to BS 5400 Clause 18.104.22.168.