The paper aims to the determination of load-bearing capacity of reinforced/prestressed concrete bridges subjected to the combination of all components of internal forces according to Eurocode standards for assessment of existing structures. Undoubtedly bridge load rating is laborious hand-iterative process, especially when it comes to reinforced and/or prestressed concrete bridges. The engineer can spend days and weeks trials and errors in the estimation of bridge load-carrying capacity. The problem lies in the determination of load-bearing capacity of cross-section subjected to the combination of normal and shear forces, bending and torsional moments. Due to the different effects of permanent and variable loads and the non-linear behavior of structural materials, the problem becomes non-linear and its solution requires the use of suitable iterative method. Optimized iterative solution was implemented into IDEA StatiCa software and the results are presented in this paper.
<p>Using BIM technology for the design process in the construction industry has become somewhat of a standard approach. For bridge design, various solutions offering geometric design functionality and data management facilities are available on the market. However, integrated solutions for seamlessly supporting the whole planning process are still a scarce commodity. The solution presented integrates architectural modeling, structural analysis, and sophisticated proof checking functionality in one package, where, based on a 4D architectural model, an analysis model is automatically derived, allowing for simulating the erection process in detail and investigating all relevant stress states. The focus of the paper is the reinforcement design of prestressed concrete sections, which is one of the most challenging tasks among the various requirements arising in the design process.</p>
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