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<p>This study investigates the seismic performance of reinforced concrete structures under varying soil conditions and building heights, focusing on 4, 8, and 12-story buildings subjected to simulated seismic loads. The analysis reveals a significant influence of soil type on structural response, with soft soils amplifying ground motion, leading to substantial increases in lateral displacement, drift, and vertical settlement, particularly in taller structures. When constructed on soft soil, 12-story edifices exhibit 137% greater movement than 4-story structures. Lateral drifts are very responsive to soil hardness. Lateral drifts in 4-story buildings decrease by 28.5% when the soil transitions from soft to medium.Nonetheless, inter-story drift exhibit reduced sensitivity, suggesting the possibility of alternative explanations. The research advocates implementing performance-based seismic design, enhanced damping mechanisms, and incorporating site-specific geotechnical data to mitigate risks. Due to compaction and consolidation, soft to medium soil experiences a 40.3% reduction in settlement. Compact soils minimize drifts, yet stress concentrations increase soil pressures by 43.5%. The findings advocate for improved models of soil amplification, hybrid techniques to mitigate seismic impacts, and adaptive design to enhance structural resilience across various geological contexts. The findings indicate that SSI is essential in earthquake design to achieve consistent and dependable outcomes, reducing damage by 30 to 40%.</p>

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Numerical simulation of soil-structure interaction on the seismic response of reinforced concrete buildings

  • 期刊论文

  • 发表日期：

    2025年5月21日

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  • Yasser M. Kadhim,
  • Abdulkhalik J. Abdulridha

摘要

This study investigates the seismic performance of reinforced concrete structures under varying soil conditions and building heights, focusing on 4, 8, and 12-story buildings subjected to simulated seismic loads. The analysis reveals a significant influence of soil type on structural response, with soft soils amplifying ground motion, leading to substantial increases in lateral displacement, drift, and vertical settlement, particularly in taller structures. When constructed on soft soil, 12-story edifices exhibit 137% greater movement than 4-story structures. Lateral drifts are very responsive to soil hardness. Lateral drifts in 4-story buildings decrease by 28.5% when the soil transitions from soft to medium.Nonetheless, inter-story drift exhibit reduced sensitivity, suggesting the possibility of alternative explanations. The research advocates implementing performance-based seismic design, enhanced damping mechanisms, and incorporating site-specific geotechnical data to mitigate risks. Due to compaction and consolidation, soft to medium soil experiences a 40.3% reduction in settlement. Compact soils minimize drifts, yet stress concentrations increase soil pressures by 43.5%. The findings advocate for improved models of soil amplification, hybrid techniques to mitigate seismic impacts, and adaptive design to enhance structural resilience across various geological contexts. The findings indicate that SSI is essential in earthquake design to achieve consistent and dependable outcomes, reducing damage by 30 to 40%.