Impact of stiffness irregularity on the wind response of multi-storey vertical irregular structures

  • Unique Paper ID: 184353
  • PageNo: 1096-1100
  • Abstract:
  • This study examines the wind response of a 35-story vertically irregular building with varying floor heights at selected levels to simulate stiffness discontinuities. Using ETABS 2022, analysis is performed in accordance with IS 16700:2017 and relevant wind codes. Results indicate that irregularities at lower and mid-levels (ground and 17th floors) significantly increase displacement and shear, making the structure more vulnerable, while irregularities at higher levels (24th and 34th floors) show comparatively lesser impact. Wind analysis further highlights changes in lateral resistance and torsional effects at irregular stories. The study concludes that vertical stiffness irregularities must be carefully managed, recommending retrofitting and optimized member dimensions at critical floors to enhance structural safety.

Copyright & License

Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{184353,
        author = {Khan Ismail Farid Maryam and Dr.N.G.Gore},
        title = {Impact of stiffness irregularity on the wind response of multi-storey vertical irregular structures},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {12},
        number = {4},
        pages = {1096-1100},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=184353},
        abstract = {This study examines the wind response of a 35-story vertically irregular building with varying floor heights at selected levels to simulate stiffness discontinuities. Using ETABS 2022, analysis is performed in accordance with IS 16700:2017 and relevant wind codes. Results indicate that irregularities at lower and mid-levels (ground and 17th floors) significantly increase displacement and shear, making the structure more vulnerable, while irregularities at higher levels (24th and 34th floors) show comparatively lesser impact. Wind analysis further highlights changes in lateral resistance and torsional effects at irregular stories. The study concludes that vertical stiffness irregularities must be carefully managed, recommending retrofitting and optimized member dimensions at critical floors to enhance structural safety.},
        keywords = {Irregular building, wind, ETABS, Response Spectrum},
        month = {September},
        }

Cite This Article

Maryam, K. I. F., & Dr.N.G.Gore, (2025). Impact of stiffness irregularity on the wind response of multi-storey vertical irregular structures. International Journal of Innovative Research in Technology (IJIRT), 12(4), 1096–1100.

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