Bridge Design Calculations

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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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Disclaimer

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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REINFORCED CONCRETE BRIDGE

 

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Two Span Reinforced Concrete Bridge Deck to BS 5400

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.
 

 

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A1.zip (718KB)
Issue 1003
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Reinforced Concrete Substructure for a Two Span Bridge Deck to BS 5400

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.
 

 

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A2.zip (600KB)
Issue 004
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Member Properties and Grillage Analysis for Two Span Reinforced Concrete Deck & Substructure to BS 5400

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 5.3.4.1.
 

 

Free
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RCGrillage950.zip (1.32MB)