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Sustainable Design of Circular Reinforced Concrete Column Sections via Multi-Objective Optimization

Author

Listed:
  • Primož Jelušič

    (Faculty of Civil Engineering, Transportation Engineering and Architecture, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia)

  • Tomaž Žula

    (Faculty of Civil Engineering, Transportation Engineering and Architecture, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia)

Abstract

An optimization model for reinforced concrete circular columns based on the Eurocodes is presented. With the developed optimization model, which takes into account the exact distribution of the steel reinforcement, which is not the case when designing with conventional column design charts, an optimal design for the reinforced concrete cross section is determined. The optimization model uses discrete variables, which makes the results more suitable for actual construction practice and fully exploits the structural capacity of the structure. A parametric study of the applied axial load and bending moment was performed for material cost and CO 2 emissions. The results based on a single objective function show that the optimal design of the reinforced concrete column cross section obtained for the material cost objective function contains a larger cross-sectional area of concrete and a smaller area of steel compared with the optimization results when CO 2 emissions are determined as the objective function. However, the optimal solution in the case where the material cost was assigned as the objective function has much more reserve in axial load capacity than in the optimal design where CO 2 was chosen as the objective function. In addition, the multi-objective optimization was performed to find a set of solutions that provide the best trade-offs between the material cost and CO 2 emission objectives.

Suggested Citation

  • Primož Jelušič & Tomaž Žula, 2023. "Sustainable Design of Circular Reinforced Concrete Column Sections via Multi-Objective Optimization," Sustainability, MDPI, vol. 15(15), pages 1-19, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:15:p:11689-:d:1205387
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    References listed on IDEAS

    as
    1. Jelušič, Primož & Žlender, Bojan, 2020. "Determining optimal designs for conventional and geothermal energy piles," Renewable Energy, Elsevier, vol. 147(P2), pages 2633-2642.
    2. Liming Di & Zhuogang Sun & Fuxiang Zhi & Tao Wan & Qixin Yang, 2023. "Assessment of an Optimal Design Method for a High-Energy Ultrasonic Igniter Based on Multi-Objective Robustness Optimization," Sustainability, MDPI, vol. 15(3), pages 1-19, January.
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