Structural Connections of Steel Building Frames under Extreme Loading

Abstract

Resistance to progressive collapse under extreme loading is a measure of the structural robustness, and relies primarily on resistance of key elements, continuity between elements and ductility of elements and their connections. In case some hazards occur simultaneously or consecutively in a very short period of time, e.g. fire after explosion or impact, the capacity of the members and connections can be exceeded and this can initiate the progressive collapse of the structure. The paper presents the results of a research program that focused on the ultimate capacity of connection macro-components under large deformation demands and different loading rates. The specimens were extracted from extended end plate bolted beam-to-column connections with different strength and stiffness ratios to the beams.

Enhancing Structural Resilience: Exploring the Novel Sleeve Method for Steel T-Stub Connections

“…The behavior of the T-stub model is influenced by various phenomena and factors. T-stubs play a crucial role in these end-plate connections and have a notable impact on the way these connections fail and their flexural performance [4]. Therefore, it is possible to simplify extended end-plate connections by modeling them as T-stubs.…”