<p>This study examines the seismic load effects on symmetrical and asymmetrical structures using STAAD.Pro, following the guidelines of IS 1893 (Part 1): 2016. The research compares the seismic performance of four different G + 7 structural configurations: two symmetrical (rectangular and cross plus) and two asymmetrical (T-shaped and U-shaped) buildings, all situated in seismic Zone 4 on soft soil. The analysis focuses on key parameters such as storey drift, displacement, base shear, and internal forces. Results indicate that symmetrical structures exhibit superior seismic performance, with lower storey drift, displacement, and base shear values compared to asymmetrical structures. Specifically, the rectangular symmetric model showed the least plate stress and the lowest storey displacement, demonstrating its resilience to seismic forces. Conversely, the U-shaped and T-shaped asymmetrical structures experienced higher stress and displacement, highlighting their vulnerability. Additionally, the study assessed the material efficiency of each configuration, revealing that symmetrical structures not only perform better but also require less concrete and steel, making them more cost-effective. Hypothesis testing also revealed that these differences are statistically significant, with symmetrical models, particularly the rectangular configuration, demonstrating enhanced seismic resilience. These findings emphasize the importance of symmetry in seismic design and offer practical insights for engineers and designers to optimize building configurations for enhanced earthquake resistance.</p>

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Comparative seismic analysis of symmetrical and asymmetrical G + 7 structures using STAAD.Pro: insights into performance and material efficiency

  • Esar Ahmad,
  • Lizina Khatua,
  • Krushna Chandra Sethi,
  • Miguel Villagómez-Galindo,
  • Abhishek Upadhyay,
  • Kuldeep Pathak

摘要

This study examines the seismic load effects on symmetrical and asymmetrical structures using STAAD.Pro, following the guidelines of IS 1893 (Part 1): 2016. The research compares the seismic performance of four different G + 7 structural configurations: two symmetrical (rectangular and cross plus) and two asymmetrical (T-shaped and U-shaped) buildings, all situated in seismic Zone 4 on soft soil. The analysis focuses on key parameters such as storey drift, displacement, base shear, and internal forces. Results indicate that symmetrical structures exhibit superior seismic performance, with lower storey drift, displacement, and base shear values compared to asymmetrical structures. Specifically, the rectangular symmetric model showed the least plate stress and the lowest storey displacement, demonstrating its resilience to seismic forces. Conversely, the U-shaped and T-shaped asymmetrical structures experienced higher stress and displacement, highlighting their vulnerability. Additionally, the study assessed the material efficiency of each configuration, revealing that symmetrical structures not only perform better but also require less concrete and steel, making them more cost-effective. Hypothesis testing also revealed that these differences are statistically significant, with symmetrical models, particularly the rectangular configuration, demonstrating enhanced seismic resilience. These findings emphasize the importance of symmetry in seismic design and offer practical insights for engineers and designers to optimize building configurations for enhanced earthquake resistance.