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Effects of Earthquake Components on Seismic Progressive Collapse Potential of Steel Frames
The progressive collapse in building frames refers to the spread of an initial localized chain collapse in all or some parts of the structure. This phenomenon occurs following the removal of one or more load-bearing elements and eventually leads to the total or partial collapse of the structure. In previous studies, the progressive collapse has been analyzed mainly using the method proposed in building codes under gravitational loading with a defined load combination. However, the vertical component of the earthquake is less addressed in studies that have examined progressive collapse analysis during earthquake applications. This study aims to investigate the progressive collapse of steel moment-resisting frames under seismic loading. For this purpose, the effect of the seismic properties of the acceleration records such as peak ground acceleration (PGA), Arias intensity, frequency content, and a vertical component are examined, following the introduction of several acceleration groups. Next, progressive collapse analysis with side and middle column removal is simulated under various scenarios during an earthquake. The results showed a high effect of PGA and predominant period on frame responses (about 40%) and, at the same time, a slight effect of the vertical component application on frame responses.
Effects of Earthquake Components on Seismic Progressive Collapse Potential of Steel Frames
The progressive collapse in building frames refers to the spread of an initial localized chain collapse in all or some parts of the structure. This phenomenon occurs following the removal of one or more load-bearing elements and eventually leads to the total or partial collapse of the structure. In previous studies, the progressive collapse has been analyzed mainly using the method proposed in building codes under gravitational loading with a defined load combination. However, the vertical component of the earthquake is less addressed in studies that have examined progressive collapse analysis during earthquake applications. This study aims to investigate the progressive collapse of steel moment-resisting frames under seismic loading. For this purpose, the effect of the seismic properties of the acceleration records such as peak ground acceleration (PGA), Arias intensity, frequency content, and a vertical component are examined, following the introduction of several acceleration groups. Next, progressive collapse analysis with side and middle column removal is simulated under various scenarios during an earthquake. The results showed a high effect of PGA and predominant period on frame responses (about 40%) and, at the same time, a slight effect of the vertical component application on frame responses.
Effects of Earthquake Components on Seismic Progressive Collapse Potential of Steel Frames
Iran J Sci Technol Trans Civ Eng
Maghroon, Farzad (author) / Izadinia, Mohsen (author) / Solhjoei, Nosratollah (author) / Abadi, Esmaeil Izadi Zaman (author)
2022-10-01
15 pages
Article (Journal)
Electronic Resource
English
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