Design Charts for Reinforced Concrete Bridges
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Date
2015-07
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Addis Ababa University
Abstract
Design of bridge structure is a complex engineering problem, which includes design of bridge
systems, selection of design manuals and standards. During design process of bridges, an
internationally accepted manuals and standards has to be exercised. In line with this, deck design
of reinforced concrete slab bridges and longitudinal girders of T- and Box- girder bridges may be
computed by either the traditional or empirical design method set in Bridge Design Manuals. To
simplify the design problem of slab and girder bridges, a spreadsheet is used in the country as a
design tool. A further work on this problem is important to minimize the effort and time required
for the design of reinforced concrete bridges.
In this study, design charts for reinforced concrete bridges have been developed following
standard specifications, technical requirements and ERA Bridge Design Manual. These charts
enable bridge engineers to reduce the time effort during design and to optimize concrete bridges.
By using these charts, one can design different alternatives for a particular bridge problem.
Moreover, such kind of attempt could be helpful to examine the correlation between sectional
parameters for cost analysis.
Finally, the use of design charts for practical application has been verified by different examples
and the result showed that smaller variation in the design output was obtained as compared with
an empirical design approach.
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Structural Engineering