A method to minimize the cost of the structural design of reinforced concrete structures using Biogeography-Based Optimization, an evolutionary algorithm, is presented. SAP2000 is used as computational engine, taking into account modelling aspects such as static soil-structure interaction (SSSI). The optimization problem is formulated to properly reflect an actual design problem, limiting e.g. the size of reinforcement bars to commercially available sections. Strategies to reduce the computational cost of the optimization procedure are proposed and an extensive parameter tuning was performed. The resulting tuned optimization algorithm allows to reduce the direct cost of the construction of a particular structure project with 21% compared to a design based on traditional criteria. We also evaluate the effect on the cost of the superstructure when SSSI is takeninto account.
翻译:介绍了利用生物地理学优化这一进化算法来尽量减少强化混凝土结构的结构设计成本的方法。SAP2000被用作计算引擎,其中考虑到静态土壤结构相互作用等建模问题。优化问题的形成是为了适当反映实际设计问题,例如将加固栅条的大小限制在商业可用区块之内。提出了降低优化程序的计算成本的战略,并进行了广泛的参数调控。由此产生的调控优化算法使得建造特定结构项目的直接成本比基于传统标准的设计降低21%。我们还评估了在考虑SSSI时对超级结构成本的影响。