An Overview of Progressive Collapse Behavior of Steel Beam-to-Column Connections

An Overview of Progressive Collapse Behavior of Steel Beam-to-Column Connections

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Local failure of one or more components due to abnormal loading can induce the progressive collapse of a building structure.In this study, by the aid of available full-scale test results on double-span systems subjected to the middle column loss scenario, an extensive parametric study was cloth nappies ackermans performed to investigate the effects of different design parameters on progressive collapse performance of beam-to-column connections, i.e., beam span-to-depth ratio, catenary mechanism, and connection robustness.The selected full-scale double-span assemblies consisted of fully rigid (welded flange-welded web, SidePlate), semi-rigid (flush end-plate, extended end-plate), and flexible connections (top and seat angle, web pantaloni bianchi neonato cleat).

The test results, including load-deformation responses, development of the catenary mechanism, and connection robustness, are presented in detail.The finding of this research further enables a comprehensive comparison between different types of steel beam-to-column connections since the effects of span-to-depth ratio and beam sections were filtered out.