A risk-based framework for enhancing the robustness of framed building structures through segmentation

[EN] Ensuring suitable robustness and resilience in building construction is a major priority for contemporary society. The study of past structural collapses resulting in disastrous consequences has revealed shortcomings in current robustness regulations. Particularly in cases of large initial damage, the widespread practice of ensuring extensive continuity may prove counterproductive, contributing to the propagation of failures rather than limiting their extent. This research presents the principles of an innovative design approach aimed at arresting the propagation of structural collapse through the segmentation of buildings. A performance-based framework is here proposed to guide designers in preventive structural planning for improved resilience. A cost-benefit analysis, a key tool to quantify the benefit of this philosophy , is introduced in order to support design decisions in accordance with required performance objectives.