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Constructing a typical steel bridge requires defining at least four stages: pier/foundation construction, girder and bracing construction, application of deck loads on non-composite girders, and deck stiffness gain. Introducing deck pouring stages will require additional stages for non-composite and composite stages. For example, if the deck is poured in three stages, six stages will be necessary (three for deck load application on girders and three for deck stiffness gain stages).
For permanent loads, such as wearing surface loads and barriers, two extra stages may be required.
Additional stages will be necessary for each transient load, such as wind loads, braking loads, live loads, and temperature loads.
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Stage
Prior Stage: The continuity of stages is maintained using the prior stage parameter, which instructs the software on which stage to analyze next. For the first stage, the prior stage will be none. If users wish to apply temporary loads like wind or live load, they can select the final permanent load stage as the prior stage for all transient loads. (screenshot for the transient load example)
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