The total UK consumption of constructional steel in 2021 rose by 16.9% to 803,000 tonnes. Progressive collapse, catastrophic event with devastating consequences for human life, economic stability, and societal well-being, has been highlighted in several incidents, including the partial collapse of the Champlain Towers in 2021. The rotational capacity of steel connections is crucial for ensuring the resilience of steel structures against progressive collapse. However, for most steel connections, their rotational capacity remains analytically undetermined, which may lead to the inaccurate estimation of the resistance of structures to progressive collapse.Our project aims to enhance the quantification of the role of connections in the progressive collapse resistance of steel structures through a combination of analytical and numerical investigations. Analytical models will be developed to characterize the moment-rotation curves of various steel connections, taking into account their rotation capacity, material type, and configuration. These curves will then be incorporated into finite element simulations to conduct reliability analyses and assess the resilience of steel frames under different connection scenarios. Additionally, these simulations will explore the influence of connection failure modes on load redistribution.The outcomes of this research are expected to significantly enhance the understanding of the role of connections in the progressive collapse of steel structures. The research will provide comprehensive guidelines for designing connections to optimize progressive collapse resistance. The project will also improve design standards and building codes for progressive collapse prevention in steelstructures.
Project Summary
The proposed research aims to enhance the understanding and quantification of the role of steel connections in progressive collapse resistance of steel structures. The project will employ a combination of analytical and numerical methods to characterize connection behavior, conduct reliability analyses, and assess the influence of connection failure modes on load redistribution.
Key Strengths
Potential Areas for Improvement
Additional Considerations
Overall Assessment
The proposed research is timely, relevant, and has the potential to make a significant contribution to the field of structural engineering. By addressing the critical issue of progressive collapse in steel structures, the project can help improve safety and resilience in the built environment. However, to maximize its impact, the researchers should consider the suggested areas for improvement and collaborate with relevant stakeholders.