Integral bridge analysis and design to Eurocode 4 Case Study Analysis and design checking of steel/composite integral bridges Optimisation of steel section and slab reinforcement bar sizes Signi?cant savings in steel weight obtained over simply supported structures Spea Engineering spa used LUSAS Bridge and the Steel and Composite Deck Designer software option to investigate and optimise the design of integral bridges to the Eurocodes. For this, two main span con?gurations were chosen, characterized by having a one and three-span arrangement respectively, with maximum lengths of the main span equal to 38 and 45.5m depending on the standard width of the overpassed highway carriageway. As a result of the analyses carried out and the design checks made, time- consuming manual checks were avoi

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