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<p>Reinforced concrete buildings constructed using High-Performance Concrete (HPC) and Eco-Friendly High-Performance Concrete (EHPC) were examined in this study to determine their nonlinear seismic performance, aiming to address a critical research gap related to the global behavior of these advanced materials under seismic loading. While HPC and EHPC are known for their superior mechanical properties and sustainability benefits, their performance has rarely been examined in the context of full-scale structural systems subjected to nonlinear static analysis. To this end, two three-story building models one regular and one irregular in plan were analyzed using the N2 method implemented in ETABS, each with three material configurations: conventional concrete, HPC, and EHPC. The analysis focused on key seismic performance indicators including lateral stiffness, base shear capacity, roof displacement, absorbed energy, and inter-story drift. The results demonstrate that both HPC and EHPC significantly enhance seismic behavior compared to conventional RC, with EHPC achieving the most notable improvements, including a 51% increase in stiffness, a 15% rise in base shear capacity, and a 23% reduction in both displacement and inter-story drift. Although both materials showed a slight reduction in energy absorption 8% for HPC and 12% for EHPC this was offset by improved deformation control and reduced seismic demand. Overall, the findings confirm the effectiveness of HPC and EHPC in enhancing the resilience of RC buildings while supporting more sustainable and performance-based seismic design strategies.</p>

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Nonlinear seismic assessment of high-performance reinforced concrete buildings

  • 期刊论文

  • 发表日期：

    2025年8月13日

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  • Salah Guettala,
  • Salim Guettala,
  • Akram Khelaifia

摘要

Reinforced concrete buildings constructed using High-Performance Concrete (HPC) and Eco-Friendly High-Performance Concrete (EHPC) were examined in this study to determine their nonlinear seismic performance, aiming to address a critical research gap related to the global behavior of these advanced materials under seismic loading. While HPC and EHPC are known for their superior mechanical properties and sustainability benefits, their performance has rarely been examined in the context of full-scale structural systems subjected to nonlinear static analysis. To this end, two three-story building models one regular and one irregular in plan were analyzed using the N2 method implemented in ETABS, each with three material configurations: conventional concrete, HPC, and EHPC. The analysis focused on key seismic performance indicators including lateral stiffness, base shear capacity, roof displacement, absorbed energy, and inter-story drift. The results demonstrate that both HPC and EHPC significantly enhance seismic behavior compared to conventional RC, with EHPC achieving the most notable improvements, including a 51% increase in stiffness, a 15% rise in base shear capacity, and a 23% reduction in both displacement and inter-story drift. Although both materials showed a slight reduction in energy absorption 8% for HPC and 12% for EHPC this was offset by improved deformation control and reduced seismic demand. Overall, the findings confirm the effectiveness of HPC and EHPC in enhancing the resilience of RC buildings while supporting more sustainable and performance-based seismic design strategies.