In structural engineering, the stability of highrise buildings during seismic activity is a major concern. Traditional outrigger systems are a structural system that joins external columns to a building’s core to provide stability, have proven effective but often present difficult design and construction issues. This project explores the potential of Virtual Outrigger Systems (VOS) as an innovative alternative. Unlike conventional outrigger systems, VOS employ outriggers without physical connections to the exterior columns, offering a more flexible and potentially cost-effective solution for enhancing building stability. The project focuses on analyzing the behaviour of a 30-storey high-rise building equipped with a VOS under seismic loads. Key performance indicators such as inter-storey drift, base bending moment, and top displacement will be assessed to evaluate the system effectiveness. Factors influencing VOS performance, and optimal location of the VOS will be systematically studied. The analysis will be guided by the design standards outlined in IS 1893 (PART1): 2016. The findings will contribute to advancing knowledge in earthquake-resistant design and provide a foundation for future research and application of VOS in high-rise construction. The findings suggest that the strategic placement of VOS on floors such as the 15th (single VOS) and 10th and 20th (dual VOS) provides the most beneficial results.

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Behavioural Analysis of Virtual Outrigger System Under Seismic Loads

  • Shehna Shaji,
  • B. S. Amal,
  • A. Gayathri,
  • T. Jayakrishna,
  • Neethu Elizabeth John

摘要

In structural engineering, the stability of highrise buildings during seismic activity is a major concern. Traditional outrigger systems are a structural system that joins external columns to a building’s core to provide stability, have proven effective but often present difficult design and construction issues. This project explores the potential of Virtual Outrigger Systems (VOS) as an innovative alternative. Unlike conventional outrigger systems, VOS employ outriggers without physical connections to the exterior columns, offering a more flexible and potentially cost-effective solution for enhancing building stability. The project focuses on analyzing the behaviour of a 30-storey high-rise building equipped with a VOS under seismic loads. Key performance indicators such as inter-storey drift, base bending moment, and top displacement will be assessed to evaluate the system effectiveness. Factors influencing VOS performance, and optimal location of the VOS will be systematically studied. The analysis will be guided by the design standards outlined in IS 1893 (PART1): 2016. The findings will contribute to advancing knowledge in earthquake-resistant design and provide a foundation for future research and application of VOS in high-rise construction. The findings suggest that the strategic placement of VOS on floors such as the 15th (single VOS) and 10th and 20th (dual VOS) provides the most beneficial results.