What type of study is this?

This is a Experimental Study study.

Resistance of Steel Frames With Rigid and Hinged Joints to Progressive Collapse

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Experimental tests reveal how steel frame behavior under dynamic loading varies between hinged and rigid joints, indicating resilience differences.

The frame with hinged nodes demonstrates lower load-bearing capacity at connections compared to rigid nodes, and a predictable failure mechanism.
Experimental results show that tie rods significantly enhance frame stability against progressive collapse under dynamic loading.
Longitudinal deformations and vibrational characteristics were measured over time to assess frame behavior during emergencies.
Satisfactory agreement with experimental data confirms effective modeling of emergency situations for designing safer structures.

Alekseytsev et al. (2025) studied this question.

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Experimental tests reveal how steel frame behavior under dynamic loading varies between hinged and rigid joints, indicating resilience differences.