A Review On Wind Tunnel Analysis and Backstay Effect in High-Rise Buildings with Podium

  • Unique Paper ID: 205213
  • Volume: 13
  • Issue: 1
  • PageNo: 5776-5782
  • Abstract:
  • Designing tall buildings demands a careful balance of lateral load management, particularly when dealing with the structural impact of podiums and wind sensitivity. This paper reviews current performance-oriented design approaches, focusing heavily on podium-induced backstay effects and the role of wind tunnel analysis. Incorporating a podium fundamentally changes lateral load paths. Overturning forces are pushed outward into floor diaphragms alongside perimeter walls, which often causes shear reversal and unexpected shifts in base shear demand. Meanwhile, the slender upper sections of these towers face serious dynamic wind challenges, where vortex shedding and across-wind forces frequently threaten occupant comfort limits. While Indian standards like IS 875 (Part 3), IS 1893, and IS 16700 provide a starting point, they do not fully capture the behavior of highly irregular geometries or the complex load transfers at the tower-podium junction. Recent literature relying on ETABS modeling, CFD simulations, and physical wind tunnel tests shows how heavily diaphragm rigidity, podium stiffness, and aerodynamic shaping dictate a building's overall response. By outlining exactly where current code provisions fall short, this review argues for a much more integrated design framework-one that firmly connects seismic backstay evaluation with advanced wind engineering to ensure overall structural resilience

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{205213,
        author = {Shreyasha Sudam Patil and Prof. Rahul Patil},
        title = {A Review On Wind Tunnel Analysis and Backstay Effect in High-Rise Buildings with Podium},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {13},
        number = {1},
        pages = {5776-5782},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=205213},
        abstract = {Designing tall buildings demands a careful balance of lateral load management, particularly when dealing with the structural impact of podiums and wind sensitivity. This paper reviews current performance-oriented design approaches, focusing heavily on podium-induced backstay effects and the role of wind tunnel analysis. Incorporating a podium fundamentally changes lateral load paths. Overturning forces are pushed outward into floor diaphragms alongside perimeter walls, which often causes shear reversal and unexpected shifts in base shear demand. Meanwhile, the slender upper sections of these towers face serious dynamic wind challenges, where vortex shedding and across-wind forces frequently threaten occupant comfort limits. While Indian standards like IS 875 (Part 3), IS 1893, and IS 16700 provide a starting point, they do not fully capture the behavior of highly irregular geometries or the complex load transfers at the tower-podium junction. Recent literature relying on ETABS modeling, CFD simulations, and physical wind tunnel tests shows how heavily diaphragm rigidity, podium stiffness, and aerodynamic shaping dictate a building's overall response. By outlining exactly where current code provisions fall short, this review argues for a much more integrated design framework-one that firmly connects seismic backstay evaluation with advanced wind engineering to ensure overall structural resilience},
        keywords = {Tall buildings Podium structures Backstay effect Wind tunnel testing CFD ETABS IS 875 IS 1893 IS 16700},
        month = {June},
        }

Cite This Article

Patil, S. S., & Patil, P. R. (2026). A Review On Wind Tunnel Analysis and Backstay Effect in High-Rise Buildings with Podium. International Journal of Innovative Research in Technology (IJIRT), 13(1), 5776–5782.

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