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Optimization based cost comparison between reinforced concrete and steel beams

机译：钢筋混凝土和钢梁之间的优化成本比较

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This paper presents the optimization based cost comparison between reinforced concrete and doubly-symmetrical welded steel I beams. The task of the research was to define the spans at which each of two different considered structures would show its advantages. The optimization/comparison was performed for simply supported beams for spans between 5 and 30 meters and for a uniformly distributed variable imposed load of 5 kN/m. The structural optimization was performed by the nonlinear programming (NLP) approach. The cost objective function was defined for the optimization and subjected to structural analysis constraints. The structures were designed in accordance with Eurocodes for both the ultimate and serviceability limit states. Beside the optimal self-manufacturing costs, the results also include the optimal masses for the different considered structures.
机译：本文介绍了钢筋混凝土和双对称焊接钢I光束之间的优化成本比较。该研究的任务是定义两个不同考虑的结构中的每一个都会显示其优势的跨度。为简单地支撑的光束执行优化/比较，用于5至30米之间的跨越，并且用于均匀分布的可变变量施加5 kN / m。通过非线性编程（NLP）方法执行结构优化。为优化并进行结构分析限制，定义了成本目标函数。该结构根据欧洲景点设计，以实现最终和可维护性限制状态。除了最佳的自制造成本，结果还包括不同考虑的结构的最佳质量。

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