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<p>This study presents an integrated framework for evaluating and optimizing the structural performance of a G + 12 reinforced concrete (RC) residential building under seismic and non-seismic loading conditions. Using STAAD.pro for finite element modeling and analysis, the building is assessed for displacement, axial force, shear force, bending moment, and plate stress. Seismic loads are modeled using the Response Spectrum Method as per IS 1893 (Part 1): 2016, while static loads follow IS 875 (Parts 1 &amp; 2): 1987. To statistically validate the differences in structural responses, paired t-tests are conducted, confirming significantly higher demands under seismic loading (<i>p</i> &lt; 0.000 across all parameters). A multi-objective optimization model using the NSGA-III algorithm is implemented, simultaneously minimizing material cost, top-floor displacement, axial force, base shear, inter-story drift, and CO₂ emissions. Twelve Pareto-optimal solutions are generated using realistic design variables (e.g., reinforcement ratio, material grades, and member dimensions), with the Weighted Sum Method identifying a balanced design alternative. The study highlights the trade-offs between structural safety, economic efficiency, and environmental impact. It provides practical guidance for the design of resilient and sustainable high-rise RC structures in seismic zones, especially within the context of Indian design standards and construction practices.</p>

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Integrated seismic performance assessment and multi-objective optimization of RC high-rise buildings using STAAD.pro and NSGA-III

  • 期刊论文

  • 发表日期：

    2025年11月11日

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  • Snehaballav Sahoo,
  • Sarvesh Vyas

摘要

This study presents an integrated framework for evaluating and optimizing the structural performance of a G + 12 reinforced concrete (RC) residential building under seismic and non-seismic loading conditions. Using STAAD.pro for finite element modeling and analysis, the building is assessed for displacement, axial force, shear force, bending moment, and plate stress. Seismic loads are modeled using the Response Spectrum Method as per IS 1893 (Part 1): 2016, while static loads follow IS 875 (Parts 1 & 2): 1987. To statistically validate the differences in structural responses, paired t-tests are conducted, confirming significantly higher demands under seismic loading (p < 0.000 across all parameters). A multi-objective optimization model using the NSGA-III algorithm is implemented, simultaneously minimizing material cost, top-floor displacement, axial force, base shear, inter-story drift, and CO₂ emissions. Twelve Pareto-optimal solutions are generated using realistic design variables (e.g., reinforcement ratio, material grades, and member dimensions), with the Weighted Sum Method identifying a balanced design alternative. The study highlights the trade-offs between structural safety, economic efficiency, and environmental impact. It provides practical guidance for the design of resilient and sustainable high-rise RC structures in seismic zones, especially within the context of Indian design standards and construction practices.