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A growing preference for glass curtain walls (GCW) over traditional infill walls is evident in various multi-story commercial buildings, including hotels, offices, malls, and public structures such as hospitals and government offices. GCW, comprising glass panels supported by a framed structural system, serves as the building’s exterior. However, instances of GCW failures during seismic events pose risks to occupants. While much research has been carried out solely on GCW components, research considering its interaction with the supporting reinforced concrete (RC) structure is still unexplored. Therefore, an experimental study is carried out aimed at assessing the seismic vulnerability of GCW systems in multi-story buildings. A 2-story RC frame designed as per Indian seismic code IS 1893 (Part 1)-2016 is mounted with stick GCW as the façade system utilizing HILTI post-installed anchors. The frame is tested under ACI 374.1–05 cyclic loading protocol. The objectives of this study are to identify damage states of GCW correlated with damage in the RC portal frame. By examining the interaction between GCW and the RC structure, this study provides insights into the seismic behavior of modern architectural assemblies. Furthermore, the experimental approach offers a comprehensive framework for evaluating GCW system performance within the context of the entire structural assembly, developing understanding of their behavior under dynamic loading conditions.

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Performance of Exterior Facade on Reinforced Concrete Frame Under Cyclic Loading

  • 会议论文

  • 发表日期：

    2026年

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  • Prathamesh Kulkarni,
  • Devyani Tewatia,
  • P. C. Ashwin Kumar,
  • Shounak Mitra,
  • Manish Shrikhande,
  • Pankaj Agarwal

摘要

A growing preference for glass curtain walls (GCW) over traditional infill walls is evident in various multi-story commercial buildings, including hotels, offices, malls, and public structures such as hospitals and government offices. GCW, comprising glass panels supported by a framed structural system, serves as the building’s exterior. However, instances of GCW failures during seismic events pose risks to occupants. While much research has been carried out solely on GCW components, research considering its interaction with the supporting reinforced concrete (RC) structure is still unexplored. Therefore, an experimental study is carried out aimed at assessing the seismic vulnerability of GCW systems in multi-story buildings. A 2-story RC frame designed as per Indian seismic code IS 1893 (Part 1)-2016 is mounted with stick GCW as the façade system utilizing HILTI post-installed anchors. The frame is tested under ACI 374.1–05 cyclic loading protocol. The objectives of this study are to identify damage states of GCW correlated with damage in the RC portal frame. By examining the interaction between GCW and the RC structure, this study provides insights into the seismic behavior of modern architectural assemblies. Furthermore, the experimental approach offers a comprehensive framework for evaluating GCW system performance within the context of the entire structural assembly, developing understanding of their behavior under dynamic loading conditions.